Class / Patent application number | Description | Number of patent applications / Date published |
324103000 | Demand, excess, maximum or minimum (e.g., separate meters for positive and negative power, peak voltmeter) | 50 |
20080272762 | Inverter - An inverter has an inverter circuit and a current detector. In the inverter circuit, upper-arm switching elements and lower-arm switching elements, which are connected to DC power supply, provide DC with pulse-width modulation (PWM) so as to output AC to a load. The current detector detects current of the load. With the structure above, the inverter calculates an average value of DC that flows between the DC power supply and the inverter circuit according to a product of an ON-period in which any one of the switching elements maintains ON and a current value detected by the current sensor. | 11-06-2008 |
20090066317 | Transformer Meter and System for Using Same - The present invention is a meter for recording voltage and current on a transformer. The device has a housing with a body portion and a lever portion, the lever portion being movable between a closed position wherein the lever portion abuts the body portion and an open position wherein the lever portion is positioned away from the body portion. The device includes a pair of current sensors each current sensor being divided into two corresponding sensor fractions with one fraction of each sensor formed on the body portion of the housing and the other corresponding fraction formed on the lever portion of the housing. The fractions of each sensors are constructed such that each of the current sensors have a central opening dimensioned to receive one of the transformer terminals when the lever portion of the housing is in its first position. The current sensors are positioned on the housing such that the meter can be mounted to the terminals of the transformer. The device also includes two voltage leads which can be attached to the transformers terminals. An instrumentation module is contained in the housing and is coupled to the current sensors and the voltage leads, the instrumentation module being adapted and configured to record voltage and current measurements from the current sensors and voltage leads. The instrumentation module includes a signal processing module for processing the voltage and current signals to provide other information such as energy and accumulated in-phase current | 03-12-2009 |
20090079416 | ELECTRICITY ENERGY MONITOR - An electric energy monitor or meter for efficient measuring and recording electrical energy usage data relating to a particular appliance or circuit. One embodiment comprises a thin-profile monitoring device through which an electrical conductor, for example the normal line cord plug of an appliance or the output wire from a circuit breaker to the load, is inserted. A display may be provided to show the accumulated energy usage. In other embodiments a device of the invention can be installed in a light switch, appliance, plug, or receptacle. Data can also be transmitted by various means to a computing device such as a personal computer or the like. The device of the invention allows for interaction with Internet-based information dissemination or gathering, meter distribution by means of incentive or promotional give-away, and control of energy usage through connection to an energy management system. | 03-26-2009 |
20100052655 | Self Contained Kilowatt-Hour meter Integral to Standard Load Center - The present invention relates generally to a load center. More particularly, the invention encompasses a self contained kilowatt-hour meter which is integral to a standard load center. The present invention is also directed to a novel printed circuit board and housing for the self contained kilowatt-hour meter. The self contained kilowatt-hour meter of this invention measures the energy usage of a facility, such as, residential unit, a house, an apartment, a condominium, and then it communicates the energy usage in a timely manner or as desired to a local requester, such as, the owner, occupant or any other entity, as well as, to another requester, such as, a remote requester, for example, an energy provider. | 03-04-2010 |
20100066349 | Method and Apparatus of Load Detection for a Planar Wireless Power System - Embodiments of the subject invention relate to a method and apparatus for determining information regarding a load in a planar wireless power transfer system by extracting system operating parameters from one or more test points in the transmitter circuit. As shown in FIG. | 03-18-2010 |
20100117625 | ENERGY USAGE MONITOR FOR A HOUSEHOLD APPLIANCE - An energy usage monitor for a household appliance, and a method of monitoring energy usage of a household appliance, are provided. The system and method include a system and an energy usage monitor that monitors energy usage information of the system of the household appliance. The system and method may include outputting energy usage information of the system of the household appliance based on the energy usage determined by the energy usage monitor. | 05-13-2010 |
20110037455 | SYSTEM FOR MEASURING ELECTRICAL POWER - The claimed subject matter discloses a system for measuring power consumption of an electrical appliance. The system comprises a sensing module for sensing physical phenomenon, located externally to the electrical appliance. The system further comprises a transmitter for transmitting information representing the physical phenomenon sensed by the sensing module and a power device. The physical phenomenon sensed by the sensing module provides indication on whether the electrical appliance is ON or OFF and whether the power consumption of the electrical appliance increased or decreased. In some cases, the indication is one or more scalars representing the sensed physical phenomena. | 02-17-2011 |
20110043188 | VOLTAGE MARGIN TEST DEVICE - A voltage margin test device tests an allowable minimum and an allowable maximum of an electronic device to obtain the voltage margin within which the electronic device can work normally. | 02-24-2011 |
20110163737 | Tire Pressure Measurement System with Reduced Current Consumption - A tire pressure measurement system (TPMS) includes a capacitor and an integrated circuit configured to receive a supply voltage. The integrated circuit includes a voltage regulator and a measurement unit. The voltage regulator is configured to be turned on and off for predetermined periods of time such that the capacitor is charged and discharged, respectively. The voltage regulator and the capacitor are connected to the measurement unit in order to selectively provide electric charge at a voltage between predetermined upper and lower limits. | 07-07-2011 |
20120068691 | di/dt Current Sensing - A circuit includes a power circuit and a current sensing circuit. The power circuit has a main current loop. The current sensing circuit is spaced apart from and electrically decoupled from the power circuit. The current sensing circuit is operable to generate a voltage proportional to an electromagnetic field generated responsive to a current change in the main current loop of the power circuit and generate a current information signal based on the voltage. The current information signal describes the current in the main current loop. | 03-22-2012 |
20120105050 | METHOD AND SYSTEM FOR VARYING SAMPLING FREQUENCY TO AVOID SOFTWARE HARMONICS WHEN SAMPLING DIGITAL POWER INDICATORS - A method and system for varying sampling frequency to avoid software harmonics when sampling digital power indicators are described herein. A power monitor may repetitively sample, at a variable sampling rate based on a variable delay time, multiple signals of an IC device to obtain energy values. The variable delay time may be based on a pseudo-random value or a predictable value. The variable delay time may indicate a number of delay cycles that may be inserted between the repetitive samples of the energy values. The variable number of delay cycles between energy value samples may produce a variable sampling rate. A variable sampling rate may avoid alignment with software harmonics which can cause an inaccurate representation of power consumption. The multiple samples obtained by repetitively sampling energy value for the portion of the IC may be summed to generate a cumulative energy value for the portion of the IC. | 05-03-2012 |
20120126784 | DEVICE FOR MEASURING CURRENT - A device for measuring current is connected to a data processing apparatus loaded with a current value comparison program for performing a quality test on a portable electronic apparatus with a battery. The portable electronic apparatus has a battery compartment for receiving the battery. The device for measuring current includes: a power supplying module for generating a low-voltage current; a dummy battery with a shape of the battery for inserting into the battery compartment, the dummy battery electrically connected to the power supplying module and the portable electronic apparatus to provide the low-voltage current generated by the power supply module to the portable electronic apparatus, forming a power supply loop to the portable electronic apparatus; and a current measuring module electrically connected to the power supply loop for measuring a current value of the power supply loop when the portable electronic apparatus is performing a specific function and transmitting the measured current value to the data processing apparatus for comparison. The present invention does not heavily rely on manual operations to measure the current of the portable electronic apparatus. | 05-24-2012 |
20120126785 | SYSTEM AND METHOD FOR CIRCUIT OVERCURRENT PROTECTION - In one aspect, the invention provides a method for overcurrent sensing including; generating an analog output signal representative of a sensed AC current, generating a digital representation of the analog output signal using a plurality of discrete samples, determining those of the plurality of discrete samples having a substantially identical magnitude and estimating an amount of overcurrent in the sensed AC current by evaluating those of the plurality of discrete samples that have the substantially identical magnitude. In some embodiments, the substantially identical magnitude is a maximum magnitude represented by the digital representation. | 05-24-2012 |
20120146623 | METHOD, SYSTEM, AND APPARATUS FOR DETECTING AN ARC EVENT USING BREAKER STATUS - A power equipment protection system includes a first circuit monitoring device configured to monitor a first circuit, a second circuit monitoring device configured to monitor a second circuit that is electrically coupled to the first circuit, and a processor communicatively coupled to the first circuit monitoring device and the second circuit monitoring device. The processor is configured to receive a signal indicative of a fault from at least one of the first circuit monitoring device and the second circuit monitoring device, determine whether the fault occurred in the first circuit or in the second circuit, and if the fault occurred in the second circuit, determine whether the fault is an arc event. | 06-14-2012 |
20120229120 | OVER-VOLTAGE TOLERANT LEVEL DETECTION CIRCUIT - This document discusses, among other things, apparatus and methods for a detection circuit. In an example, the detection circuit can include a voltage divider configured to receive a first supply voltage from an external device coupled to the detection circuit, first and second transistors configured to receive a control voltage from the voltage divider and to couple an output to ground when the control voltage exceeds a first threshold, and a bias circuit configured to bias the first transistor to set the first threshold. | 09-13-2012 |
20130027020 | METHOD FOR DETERMINING A MAXIMUM POWER POINT OF PHOTOVOLTAIC GENERATORS - A method for determining a maximum power point (MPP) of a photovoltaic generator (PV) by variation of at least one parameter of search voltage and search current, within a maximally searchable search area on a power/voltage curve is disclosed. The method includes initializing by defining a start point with a start voltage and a start current, searching for the maximum power point (MPP) in at least one search direction by repeated variation of the search voltage or search current in the search area taking account of at least two limiting conditions for limiting the search area, wherein at least one of the limiting conditions for limiting the search area are is determined with evaluation of parameters provided in an operating state already attained during the search, and ending the search if one of the at least two limiting conditions for limiting the search area is met. | 01-31-2013 |
20130076339 | Non-Intrusive Electrical Load Monitoring - A method of non-intrusive electrical load monitoring of an electrical distribution system includes monitoring a main power line of the electrical distribution system to determine a set of electrical characteristics of the electrical distribution system, receiving a set of state information for a plurality of individual loads of the electrical distribution system, and determining energy consumption characteristics for the plurality of individual loads based upon the set of electrical characteristics and the set of state information. | 03-28-2013 |
20130082682 | PEAK DETECTOR - A technique includes using a comparator to indicate whether a magnitude of a monitored signal is within predetermined boundaries and controlling a threshold of the comparator based on a history of the indication. | 04-04-2013 |
20130082683 | POWER MEASUREMENT DEVICE - Provided is a power measurement device including a detection part configured to detect a supply current and a supply voltage from a commercial alternating current power supply, a frequency control part configured to transit a fundamental frequency by the supply current and the supply voltage to an intermediate frequency, a conversion part configured to generate a digital current value and a digital voltage value of the supply current and the supply voltage having the intermediate frequency applied from the frequency control part and transit the intermediate frequency to the fundamental frequency again, and a calculation/control part configured to calculate wattage using the digital current value and the digital voltage value, which are output signals of the conversion part. | 04-04-2013 |
20130113461 | MITIGATING THE EFFECTS OF SIGNAL OVERLOAD IN ANALOG FRONT-END CIRCUITS USED IN IMAGE SENSING SYSTEMS - Output voltage of a charge-to-voltage converter used in an image sensing system is compared with one or more thresholds to determine if the output voltage exceeds predetermined threshold levels. If the output voltage exceeds one or more of the threshold levels, the input terminal of the charge-to-voltage converter is connected to a reference voltage to prevent the charge-to-voltage converter from saturating. Problems that could be caused due to overload of the voltage-to-charge converter are obviated. In an embodiment, the charge-to-voltage converter is implemented by an operational amplifier (OPAMP). A pair of comparators compares the output of the OPAMP with corresponding threshold voltages. The result of the comparison is used to generate a signal for connecting the input of the OPAMP to the reference voltage, thereby preventing saturation of the OPAMP. | 05-09-2013 |
20130127443 | ELECTRIC POWER MANAGEMENT APPARATUS AND ELECTRIC POWER MANAGEMENT METHOD - Disclosed herein is an electric power management apparatus including: an electric power measurement block configured to measure an electric power consumption amount of an electric power consumer; and an electric power comparison block configured to make a comparison between an electric power consumption amount measured by the electric power measurement block and an electric power demand forecast amount indicative of a forecast amount of an electric power demand of the electric power consumer | 05-23-2013 |
20130134962 | ENERGY SEARCH ENGINE METHODS AND SYSTEMS - Systems and methods dynamically assess energy efficiency by obtaining a minimum energy consumption of a system, receiving in a substantially continuous way a measurement of actual energy consumption of the system, and comparing the minimum energy consumption to the measurement of actual energy consumption to calculate a substantially continuous energy performance assessment. The system further provides at least one of a theoretical minimum energy consumption based at least in part on theoretical performance limits of system components, an achievable minimum energy consumption based at least in part on specifications for high energy efficient equivalents of the system components, and the designed minimum energy consumption based at least in part on specifications for the system components. | 05-30-2013 |
20130154614 | Systems and Methods for Predicting Power System Instability - Certain embodiments of the invention may include systems and methods for predicting power system instability. According to an example embodiment of the invention, a method is provided for predicting voltage collapse or instability in a power system. The method can include sampling measurement values associated with one or more busses, wherein the measurement values include current on respective lines associated with a bus; and voltage associated with the bus. The method can further include determining a change in reactive power loss (ΔQ | 06-20-2013 |
20130181698 | ELECTRICAL POWER DIAGNOSTIC SYSTEM AND METHODS - An electrical power diagnostic device and methods are disclosed. A power-supply-side connector is operable to couple to a power supply, and a load-side connector is operable to couple to a load. At least one conductive path for electricity to flow between the power-supply-side connector and the load-side connector, and a diagnostic monitor is operable to monitor and change electrical properties of the power-supply-side connector and the load-side connector. | 07-18-2013 |
20130187632 | POWER DEVICE INTERFACE ARRANGED TO DETECT AMOUNT OF POWER AVAILABLE - A powered device interface arranged as an interface between power received over a structured communication cabling and a powered device, the powered device interface constituted of: a class event counter; a logic circuit in communication with the class event counter; and a plurality of flag outputs each responsive to the logic circuit, each of the flag outputs associated with a predetermined powering level of a power sourcing equipment connected over the structured communication cabling, the logic circuit arranged to: output an active signal at the flag output associated with a detected powering level of the connected power sourcing equipment; and output an active signal at all other flag outputs associated with powering levels less than the detected powering level of the connected power sourcing equipment. | 07-25-2013 |
20130293219 | Power Management Arrangement and Method in a Utility Meter - A system includes a utility meter housing, a power supply, a non-volatile memory, an energy storage device, and a control circuit. The utility meter housing includes metrology circuitry configured to generate metering data regarding electrical power provided to the load. The energy storage device is operably coupled to the power supply. The control circuit is operably coupled to receive power generated by the power supply and receive power from the energy storage device. The control circuit is configured to: receive a first bias power signal; erase first metering information stored in the non-volatile memory; process, subsequent to erasing the first memory location, metering data received from the metrology circuit; receive a first interruption signal indicative of an interruption of power in the power supply; and store, responsive to receiving the first interruption signal, second metering information in the non-volatile memory using power from the energy storage device. | 11-07-2013 |
20130314073 | Energy Consumption Monitoring System, Method, and Computer Program - The monitoring device includes: a load specifying information storage unit which stores, for each type of the load, information including typical energy consumption and a usage time slot of the load; and a recommended consumption information storage unit which stores recommended consumption of energy for each type of the load. Once consumption information is received from the measurement instrument, a load specification unit refers to the load specifying information storage unit and specifies a type of the load used. Then, a determination processing unit refers to the recommended consumption information storage unit and determines whether or not the energy consumption of the load falls within a range of the recommended consumption. An instruction to transmit a report signal is given to the measurement instrument when it is determined as a result of the determination that the energy consumption of the load exceeds the range of the recommended consumption. | 11-28-2013 |
20140111187 | DYNAMIC DC-OFFSET DETERMINATION FOR PROXIMITY SENSING - The subject matter disclosed herein relates to dynamically determining DC-offset used for proximity sensing of a mobile device. | 04-24-2014 |
20140191747 | DYNAMIC POWER CONSUMPTION REAL-TIME DISPLAY DEVICE - The embodiments of the present disclosure disclose a dynamic power consumption real-time display device, which includes: a first power consumption determining module, according to a current PWM value of a backlight of an LCD panel as well as a corresponding relationship between PWM values of the backlight and the power consumption of the liquid crystal equipment in a mute state, for determining the power consumption of the liquid crystal equipment in the mute state corresponding to the current PWM value of the backlight, and a dynamic power consumption display module for displaying the power consumption of the liquid crystal equipment in the mute state corresponding to the current PWM value of the backlight in real time. The technical solution provided by the embodiments of the present disclosure can enhance the convenience for determining dynamic power consumption of the liquid crystal equipment and reduce the system cost. | 07-10-2014 |
20140253096 | ELECTRONIC DEVICE AND METHOD FOR TRACKING ENERGY CONSUMPTION - The invention relates to an apparatus and method for tracking energy consumption. An energy tracking system comprises at least one switching element, at least one inductor and a control block to keep the output voltage at a pre-selected level. The switching elements are configured to apply the source of energy to the inductors. The control block compares the output voltage of the energy tracking system to a reference value and controls the switching of the switched elements in order to transfer energy for the primary voltage into a secondary voltage at the output of the energy tracking system. The electronic device further comprises an ON-time and OFF-time generator and an accumulator wherein the control block is coupled to receive a signal from the ON-time and OFF-time generator and generates switching signals for the at least one switching element in the form of ON-time pulses with a constant ON-time. | 09-11-2014 |
20140266153 | ARBITRATION DEVICE, ARBITRATION METHOD, AND COMPUTER PROGRAM PRODUCT - An arbitration device comprises a determining unit that determines priority of each of a plurality of electrical devices according to at least either a position or an action status of a person present in a target area for control; and a calculating unit that calculates electrical power to be allotted to each of the electrical devices in such a way that a total of electrical power allotted to a plurality of the electrical devices is within a limit value and the electrical devices having the priority at high levels are allotted with electrical power on a priority basis. | 09-18-2014 |
20140300342 | TRACKING ENERGY CONSUMPTION USING A BOOST TECHNIQUE - The invention relates to an apparatus and method for tracking energy consumption. An energy tracking system comprises at least one switching element, at least one inductor and a control block to keep the output voltage at a pre-selected level. The switching elements are configured to apply the source of energy to the inductors. The control block compares the output voltage of the energy tracking system to a reference value and controls the switching of the switched elements in order to transfer energy for the primary voltage into a secondary voltage at the output of the energy tracking system. The electronic device further comprises an ON-time and OFF-time generator and an accumulator wherein the control block is coupled to receive a signal from the ON-time and OFF-time generator and generates switching signals for the at least one switching element in the form of ON-time pulses with a constant width ON-time. | 10-09-2014 |
20140300343 | TRACKING ENERGY CONSUMPTION USING A SEPIC-CONVERTER TECHNIQUE - The invention relates to an apparatus and method for tracking energy consumption. An energy tracking system comprises at least one switching element, at least one inductor and a control block to keep the output voltage at a pre-selected level. The switching elements are configured to apply the source of energy to the inductors. The control block compares the output voltage of the energy tracking system to a reference value and controls the switching of the switched elements in order to transfer energy for the primary voltage into a secondary voltage at the output of the energy tracking system. The electronic device further comprises an ON-time and OFF-time generator and an accumulator wherein the control block is coupled to receive a signal from the ON-time and OFF-time generator and generates switching signals for the at least one switching element in the form of ON-time pulses with a constant width ON-time. | 10-09-2014 |
20150123649 | SAMPLING CONTROL FOR MAXIMUM POWER POINT TRACKING - Apparatus and techniques for controlling measurement of an electrical parameter of an energy source can be used to obtain information for use in enhancing a power transfer efficiency between the energy source and a load. For example, during a first measurement cycle, information indicative of the electrical parameter of the energy source can be obtained using a measurement circuit during a first sampling duration in which the load is decoupled from the energy source. The information indicative of the obtained electrical parameter can be compared to a threshold. In response to the comparing, a different second sampling duration can be determined for use in obtaining information indicative of the electrical parameter during a subsequent measurement cycle. The information indicative of the electrical parameter of the energy source includes information for use in enhancing the power transfer efficiency between the energy source and the load. | 05-07-2015 |
20150316595 | LED METER BOARD FOR A TRANSFER SWITCH - Aspects of the present disclosure involve a light emitting diode (LED) meter board for a transfer switch configured to indicate the power currently being output by the transfer switch to any engaged circuits. In one particular embodiment, the LED meter board indicates a percentage of available power provided to the circuits by a generator or other alternative power source. As more power is output to the circuits, the LED meter board drives the activation of one or more LEDs. Further, the LEDs of the meter board may indicate the power currently being output by the transfer switch to any engaged circuits by blinking at various rates. The blinking rate of the LEDs may increase until one or more of the LEDs may remain solidly lit, or otherwise activated, indicating the percentage of power provided by the generator has reached a particular threshold value. | 11-05-2015 |
20150331021 | DEMAND TARGET DISPLAY DEVICE - The conventional demand target display device based on time information differing from the information used by electric power companies and electric power consumers causes a divergence regarding their demand values. Therefore, a demand target display device with a dual-purpose scale, which acquires AC signals based on the AC waveform of AC power from a power supply line, generates time information based on the acquired AC signals, transmits the generated time information via radio waves within a housing, receives the transmitted time information via radio waves within the housing, indicates the time on the dual-purpose scale based on the received information, acquires electrical energy consumption within a segment for a given target demand value including the current time, and indicates the relationship between the acquired electrical energy consumption within a segment recorded and a target demand value set for such segment, is proposed. | 11-19-2015 |
20160109494 | Method and Apparatus for Monitoring Energy Consumption - An energy consumption monitor for use in an electronic system comprising an integrated circuit such as a microcontroller. The monitor comprises a counter adapted to accumulate pulses developed by a charge source, each pulse indicative of the delivery of one unit of charge to a load circuit. A monitoring facility monitors the counter to develop an energy consumption record over time. | 04-21-2016 |
20160161533 | MEASURING DEVICE HAVING A SWITCHABLE MEASURING AND OPERATING ELECTRONICS FOR DELIVERING A MEASUREMENT SIGNAL - A measuring device having a configurable measuring and operating electronics for delivering a measurement signal, includes a measurement transmitter with an electrical current control circuit for outputting a controlled electrical current, wherein in a first manner of operation an electrical current is set in a first range, and in a second manner of operation an electrical current is set in a second range having a greater interval than the first range; the measuring device further having a microcontroller circuit is connected with the electrical current control circuit for delivering a digital signal for operating the electrical current control circuit, wherein the digital signal has a LOW state and a HIGH state and wherein by operating the electrical current control circuit an output current can be set with an electrical current level in a first interval for the LOW state and in a second interval for the HIGH state. | 06-09-2016 |
20160161537 | METHOD AND DEVICE FOR DETECTING A PHOTOVOLTAIC ELECTRICITY PRODUCTION APPARATUS IN AN ELECTRICAL DISTRIBUTION NETWORK, AND ASSOCIATED COMPUTER PROGRAM PRODUCT - A method detects at least one photovoltaic electricity production apparatus in an electrical distribution network including at least one electrical installation and at least one current sensor, each installation further including at least one electrical apparatus. The method includes acquisition, by a current sensor, of a plurality of active power profiles of a corresponding installation, computation, for at least one pair of active power profiles of a differential profile equal to the difference between the power profiles of the pair, computation of a coefficient of correlation between the differential profile or profiles computed and a reference profile, and detection of the presence of a photovoltaic electricity production apparatus among the electrical apparatus or apparatuses of the installation. | 06-09-2016 |
20160252549 | DIGITALLY IMPLEMENTED RIPPLE DETECTOR | 09-01-2016 |
20100308794 | Scheme for low power strain measurement - A method of determining a parameter includes providing a sensor that provides a sensor analog voltage. The method also includes providing a peak detecting circuit for detecting a peak voltage in the sensor analog voltage. The method also includes providing the sensor analog voltage to the peak detecting circuit and detecting the peak voltage. The method also includes recording the peak voltage. | 12-09-2010 |
20120249122 | MEASUREMENT AND APPARATUS FOR ELECTRICAL MEASUREMENT OF ELECTRICAL DRIVE PARAMETERS FOR A MEMS BASED DISPLAY - Methods and devices to measure voltage margins of electromechanical devices are disclosed. The voltage margins are determined based on responses to test voltages which cause the devices to change states. State changes of the devices are detected by monitoring integrated current or charge used to drive the devices with the test voltages. | 10-04-2012 |
20130069629 | METHOD OF IMPLEMENTATION OF PEAK HOLD IN A PHASING VOLTMETER - A high voltage phasing voltmeter comprises first and second probes. Each probe comprises an electrode for contacting a high voltage electrical conductor. The electrodes are connected in series with a resistor. A meter comprises a housing enclosing an electrical circuit for measuring true rms voltage. The electrical circuit comprises an input circuit for connection to the first and second probes and developing a scaled voltage representing measured voltage across the electrodes. A converter circuit converts the scaled voltage to a DC signal representing true rms value of the measured voltage. A peak hold circuit is connected to the converter circuit to hold a peak value of the true rms value. A display is connected to the peak hold circuit for displaying the peak value of the true rms value. | 03-21-2013 |
20140055124 | PEAK DETECTOR AND AUTO GAIN CONTROLLER USING THE SAME - Disclosed herein is a peak detector including: a operation time point providing unit outputting a certain time point before the maximum value in an interval in which a driving displacement increases as an operation time point, when a raising edge of an operation interval signal is detected; and a holding circuit unit, when a reset signal is input, starting an operation at the operation time point provided from the operation time point providing unit after an operation standby state and sensing and outputting a driving displacement of a driving mass. | 02-27-2014 |
20150316588 | Method and Apparatus for Current-Output Peak Detection - A method and apparatus for a current-output peak detector. A current-output peak detector circuit is disclosed and works in two phases. The peak detector circuit includes switches to switch the peak detector circuit from the first phase to the second phase upon detection of the peak voltage of an input voltage signal. The peak detector generates a current output with a high degree of accuracy in the second phase. | 11-05-2015 |
20160103158 | PEAK VOLTAGE DETECTOR AND RELATED METHOD OF GENERATING AN ENVELOPE VOLTAGE - A peak detector circuit receives an oscillating power supply signal. A capacitor is selectably coupled to the signal and charged to a value corresponding to a peak value of the signal. A switch is then opened to isolate the capacitor. When the signal rises to within a selected threshold, relative to the stored value, a comparator produces a command signal to close the switch, again coupling the capacitor to the signal. The peak detector can also include a tracking circuit that controls the capacitor to track the oscillating signal while the switch is closed, a timer circuit that closes the switch and activates the tracking circuit if more than a selected time passes without production of a command signal, a circuit that controls the polarity of a leakage current of the capacitor, a further auxiliary capacitor and a further auxiliary switch with a further control logic. | 04-14-2016 |
324104000 | Thermal (e.g., actuation) | 4 |
20090315534 | METHOD FOR ELIMINATING THE NEED TO ZERO AND CALIBRATE A POWER METER BEFORE USE - An improved power sensor having an input connector connected to an input port having a center pin and a ground side; an amplifier; first and second detectors; and a thermal stabilization system, including a thermal mass disposed between the ground side of the input connection and the detectors, a ground plane for holding the temperature of thermally sensitive components constant to within 2 degrees C., and a thermal impedance disposed between the center pin of the input port, preferably including a splitter and at least one DC capacitor, and a temperature sensor disposed on the ground plane. | 12-24-2009 |
20110074394 | TEST CIRCUIT FOR BIAS TEMPERATURE INSTABILITY RECOVERY MEASUREMENTS - A method, test circuit and test system provide measurements to accurately characterize threshold voltage changes due to negative bias temperature instability (NBTI) and positive bias temperature instability (PBTI). Both the bias temperature instability recovery profile and/or the bias temperature shifts due to rapid repetitions of stress application can be studied. In order to provide accurate measurements when stresses are applied at intervals on the order of tens of nanoseconds while avoiding unwanted recovery, and/or to achieve recovery profile sampling resolutions in the nanosecond range, multiple delay or ring oscillator frequency measurements are made using a delay line that is formed from delay elements that have delay variation substantially caused only by NBTI or PBTI effects. Devices in the delay elements are stressed, and then the delay line/ring oscillator is operated to measure a threshold voltage change for one or more measurement periods on the order of nanoseconds. | 03-31-2011 |
20110148395 | OVER-VOLTAGE AND OVER-TEMPERATURE DETECTING CIRCUIT - An over-voltage and over-temperature detecting circuit includes a voltage-limiting circuit, a temperature sensing circuit, a current source, a first comparing circuit and a second comparing circuit. The equivalent resistance of the temperature sensing circuit varies with the temperature. The current source provides a first current to a detecting terminal, so that a detecting voltage is generated at the detecting terminal. By comparing the magnitude of the detecting voltage with the first reference voltage value, the first comparing circuit generates a corresponding temperature status signal. By comparing the magnitude of the detecting voltage with the second reference voltage value, the second comparing circuit generates a corresponding voltage status signal. If the temperature exceeds the temperature upper limit, the temperature status signal is in an enabling status. If the first voltage exceeds the voltage upper limit, the voltage status signal is in an enabling status. | 06-23-2011 |
20140375301 | DEVICE AND METHOD FOR PROTECTING A CONSUMER - A device is disclosed for protecting a consumer, with a first current path having two lines, and a monitoring arrangement for detecting an imminent overload of the electrical consumer. In order to enable the detection of an imminent overload of a consumer, it is proposed that the monitoring arrangement includes a first temperature measuring unit, an evaluation unit and a first measuring element, which establishes an electrically conductive connection between the two lines of the first current path. The first temperature measuring unit is electrically isolated from the first measuring element and includes a first and a second temperature sensor. The first and second temperature sensor of the first temperature measuring unit are configured to simultaneously record a temperature of the first measuring element and the evaluation unit is configured to detect an imminent overload of the consumer based upon the recorded temperatures of the first temperature measuring unit. | 12-25-2014 |
324103000 | Peak voltmeters | 6 |
20080272762 | Inverter - An inverter has an inverter circuit and a current detector. In the inverter circuit, upper-arm switching elements and lower-arm switching elements, which are connected to DC power supply, provide DC with pulse-width modulation (PWM) so as to output AC to a load. The current detector detects current of the load. With the structure above, the inverter calculates an average value of DC that flows between the DC power supply and the inverter circuit according to a product of an ON-period in which any one of the switching elements maintains ON and a current value detected by the current sensor. | 11-06-2008 |
20090066317 | Transformer Meter and System for Using Same - The present invention is a meter for recording voltage and current on a transformer. The device has a housing with a body portion and a lever portion, the lever portion being movable between a closed position wherein the lever portion abuts the body portion and an open position wherein the lever portion is positioned away from the body portion. The device includes a pair of current sensors each current sensor being divided into two corresponding sensor fractions with one fraction of each sensor formed on the body portion of the housing and the other corresponding fraction formed on the lever portion of the housing. The fractions of each sensors are constructed such that each of the current sensors have a central opening dimensioned to receive one of the transformer terminals when the lever portion of the housing is in its first position. The current sensors are positioned on the housing such that the meter can be mounted to the terminals of the transformer. The device also includes two voltage leads which can be attached to the transformers terminals. An instrumentation module is contained in the housing and is coupled to the current sensors and the voltage leads, the instrumentation module being adapted and configured to record voltage and current measurements from the current sensors and voltage leads. The instrumentation module includes a signal processing module for processing the voltage and current signals to provide other information such as energy and accumulated in-phase current | 03-12-2009 |
20090079416 | ELECTRICITY ENERGY MONITOR - An electric energy monitor or meter for efficient measuring and recording electrical energy usage data relating to a particular appliance or circuit. One embodiment comprises a thin-profile monitoring device through which an electrical conductor, for example the normal line cord plug of an appliance or the output wire from a circuit breaker to the load, is inserted. A display may be provided to show the accumulated energy usage. In other embodiments a device of the invention can be installed in a light switch, appliance, plug, or receptacle. Data can also be transmitted by various means to a computing device such as a personal computer or the like. The device of the invention allows for interaction with Internet-based information dissemination or gathering, meter distribution by means of incentive or promotional give-away, and control of energy usage through connection to an energy management system. | 03-26-2009 |
20100052655 | Self Contained Kilowatt-Hour meter Integral to Standard Load Center - The present invention relates generally to a load center. More particularly, the invention encompasses a self contained kilowatt-hour meter which is integral to a standard load center. The present invention is also directed to a novel printed circuit board and housing for the self contained kilowatt-hour meter. The self contained kilowatt-hour meter of this invention measures the energy usage of a facility, such as, residential unit, a house, an apartment, a condominium, and then it communicates the energy usage in a timely manner or as desired to a local requester, such as, the owner, occupant or any other entity, as well as, to another requester, such as, a remote requester, for example, an energy provider. | 03-04-2010 |
20100066349 | Method and Apparatus of Load Detection for a Planar Wireless Power System - Embodiments of the subject invention relate to a method and apparatus for determining information regarding a load in a planar wireless power transfer system by extracting system operating parameters from one or more test points in the transmitter circuit. As shown in FIG. | 03-18-2010 |
20100117625 | ENERGY USAGE MONITOR FOR A HOUSEHOLD APPLIANCE - An energy usage monitor for a household appliance, and a method of monitoring energy usage of a household appliance, are provided. The system and method include a system and an energy usage monitor that monitors energy usage information of the system of the household appliance. The system and method may include outputting energy usage information of the system of the household appliance based on the energy usage determined by the energy usage monitor. | 05-13-2010 |
20110037455 | SYSTEM FOR MEASURING ELECTRICAL POWER - The claimed subject matter discloses a system for measuring power consumption of an electrical appliance. The system comprises a sensing module for sensing physical phenomenon, located externally to the electrical appliance. The system further comprises a transmitter for transmitting information representing the physical phenomenon sensed by the sensing module and a power device. The physical phenomenon sensed by the sensing module provides indication on whether the electrical appliance is ON or OFF and whether the power consumption of the electrical appliance increased or decreased. In some cases, the indication is one or more scalars representing the sensed physical phenomena. | 02-17-2011 |
20110043188 | VOLTAGE MARGIN TEST DEVICE - A voltage margin test device tests an allowable minimum and an allowable maximum of an electronic device to obtain the voltage margin within which the electronic device can work normally. | 02-24-2011 |
20110163737 | Tire Pressure Measurement System with Reduced Current Consumption - A tire pressure measurement system (TPMS) includes a capacitor and an integrated circuit configured to receive a supply voltage. The integrated circuit includes a voltage regulator and a measurement unit. The voltage regulator is configured to be turned on and off for predetermined periods of time such that the capacitor is charged and discharged, respectively. The voltage regulator and the capacitor are connected to the measurement unit in order to selectively provide electric charge at a voltage between predetermined upper and lower limits. | 07-07-2011 |
20120068691 | di/dt Current Sensing - A circuit includes a power circuit and a current sensing circuit. The power circuit has a main current loop. The current sensing circuit is spaced apart from and electrically decoupled from the power circuit. The current sensing circuit is operable to generate a voltage proportional to an electromagnetic field generated responsive to a current change in the main current loop of the power circuit and generate a current information signal based on the voltage. The current information signal describes the current in the main current loop. | 03-22-2012 |
20120105050 | METHOD AND SYSTEM FOR VARYING SAMPLING FREQUENCY TO AVOID SOFTWARE HARMONICS WHEN SAMPLING DIGITAL POWER INDICATORS - A method and system for varying sampling frequency to avoid software harmonics when sampling digital power indicators are described herein. A power monitor may repetitively sample, at a variable sampling rate based on a variable delay time, multiple signals of an IC device to obtain energy values. The variable delay time may be based on a pseudo-random value or a predictable value. The variable delay time may indicate a number of delay cycles that may be inserted between the repetitive samples of the energy values. The variable number of delay cycles between energy value samples may produce a variable sampling rate. A variable sampling rate may avoid alignment with software harmonics which can cause an inaccurate representation of power consumption. The multiple samples obtained by repetitively sampling energy value for the portion of the IC may be summed to generate a cumulative energy value for the portion of the IC. | 05-03-2012 |
20120126784 | DEVICE FOR MEASURING CURRENT - A device for measuring current is connected to a data processing apparatus loaded with a current value comparison program for performing a quality test on a portable electronic apparatus with a battery. The portable electronic apparatus has a battery compartment for receiving the battery. The device for measuring current includes: a power supplying module for generating a low-voltage current; a dummy battery with a shape of the battery for inserting into the battery compartment, the dummy battery electrically connected to the power supplying module and the portable electronic apparatus to provide the low-voltage current generated by the power supply module to the portable electronic apparatus, forming a power supply loop to the portable electronic apparatus; and a current measuring module electrically connected to the power supply loop for measuring a current value of the power supply loop when the portable electronic apparatus is performing a specific function and transmitting the measured current value to the data processing apparatus for comparison. The present invention does not heavily rely on manual operations to measure the current of the portable electronic apparatus. | 05-24-2012 |
20120126785 | SYSTEM AND METHOD FOR CIRCUIT OVERCURRENT PROTECTION - In one aspect, the invention provides a method for overcurrent sensing including; generating an analog output signal representative of a sensed AC current, generating a digital representation of the analog output signal using a plurality of discrete samples, determining those of the plurality of discrete samples having a substantially identical magnitude and estimating an amount of overcurrent in the sensed AC current by evaluating those of the plurality of discrete samples that have the substantially identical magnitude. In some embodiments, the substantially identical magnitude is a maximum magnitude represented by the digital representation. | 05-24-2012 |
20120146623 | METHOD, SYSTEM, AND APPARATUS FOR DETECTING AN ARC EVENT USING BREAKER STATUS - A power equipment protection system includes a first circuit monitoring device configured to monitor a first circuit, a second circuit monitoring device configured to monitor a second circuit that is electrically coupled to the first circuit, and a processor communicatively coupled to the first circuit monitoring device and the second circuit monitoring device. The processor is configured to receive a signal indicative of a fault from at least one of the first circuit monitoring device and the second circuit monitoring device, determine whether the fault occurred in the first circuit or in the second circuit, and if the fault occurred in the second circuit, determine whether the fault is an arc event. | 06-14-2012 |
20120229120 | OVER-VOLTAGE TOLERANT LEVEL DETECTION CIRCUIT - This document discusses, among other things, apparatus and methods for a detection circuit. In an example, the detection circuit can include a voltage divider configured to receive a first supply voltage from an external device coupled to the detection circuit, first and second transistors configured to receive a control voltage from the voltage divider and to couple an output to ground when the control voltage exceeds a first threshold, and a bias circuit configured to bias the first transistor to set the first threshold. | 09-13-2012 |
20130027020 | METHOD FOR DETERMINING A MAXIMUM POWER POINT OF PHOTOVOLTAIC GENERATORS - A method for determining a maximum power point (MPP) of a photovoltaic generator (PV) by variation of at least one parameter of search voltage and search current, within a maximally searchable search area on a power/voltage curve is disclosed. The method includes initializing by defining a start point with a start voltage and a start current, searching for the maximum power point (MPP) in at least one search direction by repeated variation of the search voltage or search current in the search area taking account of at least two limiting conditions for limiting the search area, wherein at least one of the limiting conditions for limiting the search area are is determined with evaluation of parameters provided in an operating state already attained during the search, and ending the search if one of the at least two limiting conditions for limiting the search area is met. | 01-31-2013 |
20130076339 | Non-Intrusive Electrical Load Monitoring - A method of non-intrusive electrical load monitoring of an electrical distribution system includes monitoring a main power line of the electrical distribution system to determine a set of electrical characteristics of the electrical distribution system, receiving a set of state information for a plurality of individual loads of the electrical distribution system, and determining energy consumption characteristics for the plurality of individual loads based upon the set of electrical characteristics and the set of state information. | 03-28-2013 |
20130082682 | PEAK DETECTOR - A technique includes using a comparator to indicate whether a magnitude of a monitored signal is within predetermined boundaries and controlling a threshold of the comparator based on a history of the indication. | 04-04-2013 |
20130082683 | POWER MEASUREMENT DEVICE - Provided is a power measurement device including a detection part configured to detect a supply current and a supply voltage from a commercial alternating current power supply, a frequency control part configured to transit a fundamental frequency by the supply current and the supply voltage to an intermediate frequency, a conversion part configured to generate a digital current value and a digital voltage value of the supply current and the supply voltage having the intermediate frequency applied from the frequency control part and transit the intermediate frequency to the fundamental frequency again, and a calculation/control part configured to calculate wattage using the digital current value and the digital voltage value, which are output signals of the conversion part. | 04-04-2013 |
20130113461 | MITIGATING THE EFFECTS OF SIGNAL OVERLOAD IN ANALOG FRONT-END CIRCUITS USED IN IMAGE SENSING SYSTEMS - Output voltage of a charge-to-voltage converter used in an image sensing system is compared with one or more thresholds to determine if the output voltage exceeds predetermined threshold levels. If the output voltage exceeds one or more of the threshold levels, the input terminal of the charge-to-voltage converter is connected to a reference voltage to prevent the charge-to-voltage converter from saturating. Problems that could be caused due to overload of the voltage-to-charge converter are obviated. In an embodiment, the charge-to-voltage converter is implemented by an operational amplifier (OPAMP). A pair of comparators compares the output of the OPAMP with corresponding threshold voltages. The result of the comparison is used to generate a signal for connecting the input of the OPAMP to the reference voltage, thereby preventing saturation of the OPAMP. | 05-09-2013 |
20130127443 | ELECTRIC POWER MANAGEMENT APPARATUS AND ELECTRIC POWER MANAGEMENT METHOD - Disclosed herein is an electric power management apparatus including: an electric power measurement block configured to measure an electric power consumption amount of an electric power consumer; and an electric power comparison block configured to make a comparison between an electric power consumption amount measured by the electric power measurement block and an electric power demand forecast amount indicative of a forecast amount of an electric power demand of the electric power consumer | 05-23-2013 |
20130134962 | ENERGY SEARCH ENGINE METHODS AND SYSTEMS - Systems and methods dynamically assess energy efficiency by obtaining a minimum energy consumption of a system, receiving in a substantially continuous way a measurement of actual energy consumption of the system, and comparing the minimum energy consumption to the measurement of actual energy consumption to calculate a substantially continuous energy performance assessment. The system further provides at least one of a theoretical minimum energy consumption based at least in part on theoretical performance limits of system components, an achievable minimum energy consumption based at least in part on specifications for high energy efficient equivalents of the system components, and the designed minimum energy consumption based at least in part on specifications for the system components. | 05-30-2013 |
20130154614 | Systems and Methods for Predicting Power System Instability - Certain embodiments of the invention may include systems and methods for predicting power system instability. According to an example embodiment of the invention, a method is provided for predicting voltage collapse or instability in a power system. The method can include sampling measurement values associated with one or more busses, wherein the measurement values include current on respective lines associated with a bus; and voltage associated with the bus. The method can further include determining a change in reactive power loss (ΔQ | 06-20-2013 |
20130181698 | ELECTRICAL POWER DIAGNOSTIC SYSTEM AND METHODS - An electrical power diagnostic device and methods are disclosed. A power-supply-side connector is operable to couple to a power supply, and a load-side connector is operable to couple to a load. At least one conductive path for electricity to flow between the power-supply-side connector and the load-side connector, and a diagnostic monitor is operable to monitor and change electrical properties of the power-supply-side connector and the load-side connector. | 07-18-2013 |
20130187632 | POWER DEVICE INTERFACE ARRANGED TO DETECT AMOUNT OF POWER AVAILABLE - A powered device interface arranged as an interface between power received over a structured communication cabling and a powered device, the powered device interface constituted of: a class event counter; a logic circuit in communication with the class event counter; and a plurality of flag outputs each responsive to the logic circuit, each of the flag outputs associated with a predetermined powering level of a power sourcing equipment connected over the structured communication cabling, the logic circuit arranged to: output an active signal at the flag output associated with a detected powering level of the connected power sourcing equipment; and output an active signal at all other flag outputs associated with powering levels less than the detected powering level of the connected power sourcing equipment. | 07-25-2013 |
20130293219 | Power Management Arrangement and Method in a Utility Meter - A system includes a utility meter housing, a power supply, a non-volatile memory, an energy storage device, and a control circuit. The utility meter housing includes metrology circuitry configured to generate metering data regarding electrical power provided to the load. The energy storage device is operably coupled to the power supply. The control circuit is operably coupled to receive power generated by the power supply and receive power from the energy storage device. The control circuit is configured to: receive a first bias power signal; erase first metering information stored in the non-volatile memory; process, subsequent to erasing the first memory location, metering data received from the metrology circuit; receive a first interruption signal indicative of an interruption of power in the power supply; and store, responsive to receiving the first interruption signal, second metering information in the non-volatile memory using power from the energy storage device. | 11-07-2013 |
20130314073 | Energy Consumption Monitoring System, Method, and Computer Program - The monitoring device includes: a load specifying information storage unit which stores, for each type of the load, information including typical energy consumption and a usage time slot of the load; and a recommended consumption information storage unit which stores recommended consumption of energy for each type of the load. Once consumption information is received from the measurement instrument, a load specification unit refers to the load specifying information storage unit and specifies a type of the load used. Then, a determination processing unit refers to the recommended consumption information storage unit and determines whether or not the energy consumption of the load falls within a range of the recommended consumption. An instruction to transmit a report signal is given to the measurement instrument when it is determined as a result of the determination that the energy consumption of the load exceeds the range of the recommended consumption. | 11-28-2013 |
20140111187 | DYNAMIC DC-OFFSET DETERMINATION FOR PROXIMITY SENSING - The subject matter disclosed herein relates to dynamically determining DC-offset used for proximity sensing of a mobile device. | 04-24-2014 |
20140191747 | DYNAMIC POWER CONSUMPTION REAL-TIME DISPLAY DEVICE - The embodiments of the present disclosure disclose a dynamic power consumption real-time display device, which includes: a first power consumption determining module, according to a current PWM value of a backlight of an LCD panel as well as a corresponding relationship between PWM values of the backlight and the power consumption of the liquid crystal equipment in a mute state, for determining the power consumption of the liquid crystal equipment in the mute state corresponding to the current PWM value of the backlight, and a dynamic power consumption display module for displaying the power consumption of the liquid crystal equipment in the mute state corresponding to the current PWM value of the backlight in real time. The technical solution provided by the embodiments of the present disclosure can enhance the convenience for determining dynamic power consumption of the liquid crystal equipment and reduce the system cost. | 07-10-2014 |
20140253096 | ELECTRONIC DEVICE AND METHOD FOR TRACKING ENERGY CONSUMPTION - The invention relates to an apparatus and method for tracking energy consumption. An energy tracking system comprises at least one switching element, at least one inductor and a control block to keep the output voltage at a pre-selected level. The switching elements are configured to apply the source of energy to the inductors. The control block compares the output voltage of the energy tracking system to a reference value and controls the switching of the switched elements in order to transfer energy for the primary voltage into a secondary voltage at the output of the energy tracking system. The electronic device further comprises an ON-time and OFF-time generator and an accumulator wherein the control block is coupled to receive a signal from the ON-time and OFF-time generator and generates switching signals for the at least one switching element in the form of ON-time pulses with a constant ON-time. | 09-11-2014 |
20140266153 | ARBITRATION DEVICE, ARBITRATION METHOD, AND COMPUTER PROGRAM PRODUCT - An arbitration device comprises a determining unit that determines priority of each of a plurality of electrical devices according to at least either a position or an action status of a person present in a target area for control; and a calculating unit that calculates electrical power to be allotted to each of the electrical devices in such a way that a total of electrical power allotted to a plurality of the electrical devices is within a limit value and the electrical devices having the priority at high levels are allotted with electrical power on a priority basis. | 09-18-2014 |
20140300342 | TRACKING ENERGY CONSUMPTION USING A BOOST TECHNIQUE - The invention relates to an apparatus and method for tracking energy consumption. An energy tracking system comprises at least one switching element, at least one inductor and a control block to keep the output voltage at a pre-selected level. The switching elements are configured to apply the source of energy to the inductors. The control block compares the output voltage of the energy tracking system to a reference value and controls the switching of the switched elements in order to transfer energy for the primary voltage into a secondary voltage at the output of the energy tracking system. The electronic device further comprises an ON-time and OFF-time generator and an accumulator wherein the control block is coupled to receive a signal from the ON-time and OFF-time generator and generates switching signals for the at least one switching element in the form of ON-time pulses with a constant width ON-time. | 10-09-2014 |
20140300343 | TRACKING ENERGY CONSUMPTION USING A SEPIC-CONVERTER TECHNIQUE - The invention relates to an apparatus and method for tracking energy consumption. An energy tracking system comprises at least one switching element, at least one inductor and a control block to keep the output voltage at a pre-selected level. The switching elements are configured to apply the source of energy to the inductors. The control block compares the output voltage of the energy tracking system to a reference value and controls the switching of the switched elements in order to transfer energy for the primary voltage into a secondary voltage at the output of the energy tracking system. The electronic device further comprises an ON-time and OFF-time generator and an accumulator wherein the control block is coupled to receive a signal from the ON-time and OFF-time generator and generates switching signals for the at least one switching element in the form of ON-time pulses with a constant width ON-time. | 10-09-2014 |
20150123649 | SAMPLING CONTROL FOR MAXIMUM POWER POINT TRACKING - Apparatus and techniques for controlling measurement of an electrical parameter of an energy source can be used to obtain information for use in enhancing a power transfer efficiency between the energy source and a load. For example, during a first measurement cycle, information indicative of the electrical parameter of the energy source can be obtained using a measurement circuit during a first sampling duration in which the load is decoupled from the energy source. The information indicative of the obtained electrical parameter can be compared to a threshold. In response to the comparing, a different second sampling duration can be determined for use in obtaining information indicative of the electrical parameter during a subsequent measurement cycle. The information indicative of the electrical parameter of the energy source includes information for use in enhancing the power transfer efficiency between the energy source and the load. | 05-07-2015 |
20150316595 | LED METER BOARD FOR A TRANSFER SWITCH - Aspects of the present disclosure involve a light emitting diode (LED) meter board for a transfer switch configured to indicate the power currently being output by the transfer switch to any engaged circuits. In one particular embodiment, the LED meter board indicates a percentage of available power provided to the circuits by a generator or other alternative power source. As more power is output to the circuits, the LED meter board drives the activation of one or more LEDs. Further, the LEDs of the meter board may indicate the power currently being output by the transfer switch to any engaged circuits by blinking at various rates. The blinking rate of the LEDs may increase until one or more of the LEDs may remain solidly lit, or otherwise activated, indicating the percentage of power provided by the generator has reached a particular threshold value. | 11-05-2015 |
20150331021 | DEMAND TARGET DISPLAY DEVICE - The conventional demand target display device based on time information differing from the information used by electric power companies and electric power consumers causes a divergence regarding their demand values. Therefore, a demand target display device with a dual-purpose scale, which acquires AC signals based on the AC waveform of AC power from a power supply line, generates time information based on the acquired AC signals, transmits the generated time information via radio waves within a housing, receives the transmitted time information via radio waves within the housing, indicates the time on the dual-purpose scale based on the received information, acquires electrical energy consumption within a segment for a given target demand value including the current time, and indicates the relationship between the acquired electrical energy consumption within a segment recorded and a target demand value set for such segment, is proposed. | 11-19-2015 |
20160109494 | Method and Apparatus for Monitoring Energy Consumption - An energy consumption monitor for use in an electronic system comprising an integrated circuit such as a microcontroller. The monitor comprises a counter adapted to accumulate pulses developed by a charge source, each pulse indicative of the delivery of one unit of charge to a load circuit. A monitoring facility monitors the counter to develop an energy consumption record over time. | 04-21-2016 |
20160161533 | MEASURING DEVICE HAVING A SWITCHABLE MEASURING AND OPERATING ELECTRONICS FOR DELIVERING A MEASUREMENT SIGNAL - A measuring device having a configurable measuring and operating electronics for delivering a measurement signal, includes a measurement transmitter with an electrical current control circuit for outputting a controlled electrical current, wherein in a first manner of operation an electrical current is set in a first range, and in a second manner of operation an electrical current is set in a second range having a greater interval than the first range; the measuring device further having a microcontroller circuit is connected with the electrical current control circuit for delivering a digital signal for operating the electrical current control circuit, wherein the digital signal has a LOW state and a HIGH state and wherein by operating the electrical current control circuit an output current can be set with an electrical current level in a first interval for the LOW state and in a second interval for the HIGH state. | 06-09-2016 |
20160161537 | METHOD AND DEVICE FOR DETECTING A PHOTOVOLTAIC ELECTRICITY PRODUCTION APPARATUS IN AN ELECTRICAL DISTRIBUTION NETWORK, AND ASSOCIATED COMPUTER PROGRAM PRODUCT - A method detects at least one photovoltaic electricity production apparatus in an electrical distribution network including at least one electrical installation and at least one current sensor, each installation further including at least one electrical apparatus. The method includes acquisition, by a current sensor, of a plurality of active power profiles of a corresponding installation, computation, for at least one pair of active power profiles of a differential profile equal to the difference between the power profiles of the pair, computation of a coefficient of correlation between the differential profile or profiles computed and a reference profile, and detection of the presence of a photovoltaic electricity production apparatus among the electrical apparatus or apparatuses of the installation. | 06-09-2016 |
20160252549 | DIGITALLY IMPLEMENTED RIPPLE DETECTOR | 09-01-2016 |
20100308794 | Scheme for low power strain measurement - A method of determining a parameter includes providing a sensor that provides a sensor analog voltage. The method also includes providing a peak detecting circuit for detecting a peak voltage in the sensor analog voltage. The method also includes providing the sensor analog voltage to the peak detecting circuit and detecting the peak voltage. The method also includes recording the peak voltage. | 12-09-2010 |
20120249122 | MEASUREMENT AND APPARATUS FOR ELECTRICAL MEASUREMENT OF ELECTRICAL DRIVE PARAMETERS FOR A MEMS BASED DISPLAY - Methods and devices to measure voltage margins of electromechanical devices are disclosed. The voltage margins are determined based on responses to test voltages which cause the devices to change states. State changes of the devices are detected by monitoring integrated current or charge used to drive the devices with the test voltages. | 10-04-2012 |
20130069629 | METHOD OF IMPLEMENTATION OF PEAK HOLD IN A PHASING VOLTMETER - A high voltage phasing voltmeter comprises first and second probes. Each probe comprises an electrode for contacting a high voltage electrical conductor. The electrodes are connected in series with a resistor. A meter comprises a housing enclosing an electrical circuit for measuring true rms voltage. The electrical circuit comprises an input circuit for connection to the first and second probes and developing a scaled voltage representing measured voltage across the electrodes. A converter circuit converts the scaled voltage to a DC signal representing true rms value of the measured voltage. A peak hold circuit is connected to the converter circuit to hold a peak value of the true rms value. A display is connected to the peak hold circuit for displaying the peak value of the true rms value. | 03-21-2013 |
20140055124 | PEAK DETECTOR AND AUTO GAIN CONTROLLER USING THE SAME - Disclosed herein is a peak detector including: a operation time point providing unit outputting a certain time point before the maximum value in an interval in which a driving displacement increases as an operation time point, when a raising edge of an operation interval signal is detected; and a holding circuit unit, when a reset signal is input, starting an operation at the operation time point provided from the operation time point providing unit after an operation standby state and sensing and outputting a driving displacement of a driving mass. | 02-27-2014 |
20150316588 | Method and Apparatus for Current-Output Peak Detection - A method and apparatus for a current-output peak detector. A current-output peak detector circuit is disclosed and works in two phases. The peak detector circuit includes switches to switch the peak detector circuit from the first phase to the second phase upon detection of the peak voltage of an input voltage signal. The peak detector generates a current output with a high degree of accuracy in the second phase. | 11-05-2015 |
20160103158 | PEAK VOLTAGE DETECTOR AND RELATED METHOD OF GENERATING AN ENVELOPE VOLTAGE - A peak detector circuit receives an oscillating power supply signal. A capacitor is selectably coupled to the signal and charged to a value corresponding to a peak value of the signal. A switch is then opened to isolate the capacitor. When the signal rises to within a selected threshold, relative to the stored value, a comparator produces a command signal to close the switch, again coupling the capacitor to the signal. The peak detector can also include a tracking circuit that controls the capacitor to track the oscillating signal while the switch is closed, a timer circuit that closes the switch and activates the tracking circuit if more than a selected time passes without production of a command signal, a circuit that controls the polarity of a leakage current of the capacitor, a further auxiliary capacitor and a further auxiliary switch with a further control logic. | 04-14-2016 |