Class / Patent application number | Description | Number of patent applications / Date published |
324503000 | In vehicle wiring | 79 |
20080204032 | Electrical connector Integrity Tester - This invention provides an electric fuel pump tester that allows a technician to simulate the real-life operation of the electrical system of the vehicle, i.e., when the fuel pump is installed. The present invention provides a tester that includes a load that is similar to that of an installed fuel pump. In this manner, a technician may monitor simulated real-life operation of the vehicle's electrical system. | 08-28-2008 |
20090051365 | METHOD AND APPARATUS FOR MEASURING A PARAMETER OF A VEHICLE ELECTRICAL SYSTEM - An automotive vehicle electrical system tester is provided for testing an electrical system having wiring which couple a load to a battery. The automotive vehicle electrical system tester is configured to measure an electrical parameter of the wiring and includes a first battery terminal connection configured to couple to a first terminal of the battery. A test connection is configured to couple to a wire of the electrical system which extends between the first terminal of the battery and the load. Test circuitry coupled to the first battery terminal connection and the test connection is configured to draw current from the battery along a path through the wire and to the test connection. The test circuitry measures an electrical parameter of the wire. | 02-26-2009 |
20090096463 | HYBRID VEHICLE TESTING SYSTEM AND METHOD - In a hybrid vehicle, first, an engine is locked by an engine shaft locking mechanism. A first motor is connected to a first inverter circuit and a second motor is connected to a second inverter circuit and then both the motors are operated, and the output characteristics of each motor are obtained. Further, the first motor is connected to the second inverter circuit and the second motor is connected to the first inverter circuit and then both the motors are operated, and the output characteristics of each motor are obtained. Based on the obtained output characteristics, it is determined whether each of the motors and the inverter circuits is normal or not. | 04-16-2009 |
20100060288 | METHOD OF DETECTING A SUSTAINED PARALLEL SOURCE CONDITION - A method of detecting a parallel source condition includes calculating a reactive power, comparing the reactive power to a predetermined threshold, and determining a parallel source condition in response to the reactive power exceeding the predetermined threshold. | 03-11-2010 |
20100085058 | TRAINLINE INTEGRITY LOCOMOTIVE TEST DEVICE - A trainline integrity locomotive test device is provided that is configured to provide conventionally provided End-Of-Train (EOT) functionality required for a single locomotive test as well as functionality necessary for troubleshooting electrical problems in trainline electrical conductors, wherein the trainline integrity locomotive test device includes a reduced number of components in comparison with a conventional EOT device. Additionally, the test device is provided in more compact, durable and robust form relative to conventional EOT devices. As part of the transmission of trainline integrity data from the test device to the Head-End-Unit, a communications heartbeat signal is substituted for brake pipe pressure conventionally detected by EOT devices, so as to provide an indication of data communication reliability. | 04-08-2010 |
20100085059 | DIFFERENTIAL POWER DETECTION - A method of determining a differential power condition includes comparing a voltage across a resistor to a first threshold. The voltage across the resistor is proportional to a difference between a first current and a second current. The method also includes comparing a difference between the first current and the second current to a second threshold. A differential power condition is determined in response to the voltage across the resistor exceeding the first threshold, the difference exceeding the second threshold, or both. | 04-08-2010 |
20100085060 | ELECTRIC POWER SOURCE CIRCUIT AND ABNORMALITY DIAGNOSIS SYSTEM - In a power source circuit for supplying electric power of a battery, a capacitor is charged by the battery when an ignition switch and a power supply relay are closed. The power supply relay is opened after the ignition switch is closed. The charge voltage of the capacitor falls, if the power supply relay has no fixed-closure abnormality. The charge voltage of the capacitor does not fall, if the power supply relay has the fixed-closure abnormality. A microcomputer diagnoses the power supply relay with respect to its fixed-closure abnormality based on the charge voltage of the capacitor when the ignition switch and the power supply relay are operated to open. | 04-08-2010 |
20100123465 | AUTOMOTIVE BATTERY CIRCUIT FAULT DETECTION - In a vehicle having an electrical system including a ground circuit that provides an operative connection from the electrical system to an electrical ground and an electric power generator driven by an engine of the vehicle, the generator arranged to selectively provide electric power to an electrical load of the vehicle and to selectively charge a battery of the vehicle, a fault detection system is provided for detecting an open circuit or high resistance fault in the ground circuit. The fault detection system includes: a controller that controls a voltage output of the generator so as to at least one of restrict or suspend charging or increase or start charging of the battery by the generator for a designated test period; and, determining means for determining a current discharge from or charging current into the battery during the test period, wherein if the determined current discharge or charging current is less than a given threshold, then an open circuit or high resistance fault is deemed to be detected in the ground circuit. | 05-20-2010 |
20100213948 | METHOD AND APPARATUS FOR DIAGNOSING A MOTOR CONTROL CIRCUIT IN A HYBRID VEHICLE - A hybrid electric vehicle (HEV) has an algorithm for executing a method for diagnosing a high-voltage (HV) fault condition aboard the HEV. The HEV includes a high-voltage (HV) battery, an auxiliary power module (APM), a power inverter module (PIM), and a three-phase motor/generator unit (MGU). A controller executes the method to thereby measure a DC output current from the HV battery, a DC inlet current into the APM, and a pair of AC phase currents in the MGU. The method further includes calculating a DC inlet current into the PIM using the AC phase currents, diagnosing the HV fault condition using the DC output currents and the DC inlet currents, and executing a control action in response to the diagnosed condition. The method can include shutting off the APM to determine whether the APM is the root cause of the HV fault condition. | 08-26-2010 |
20100277180 | Method and Kit For Testing 3-Phase Supplies Onboard Of An Aircraft - The present invention relates to a method for testing power lines and signal lines onboard of an aircraft, wherein the power lines and signal lines normally connect a 3-phase AC motor with the power supply system of the aircraft, and wherein the 3-phase AC motor has separate input terminals onto which, during operation of the 3-phase AC motor onboard of the aircraft, predetermined voltages of predetermined phase difference are to be applied. The method according to the invention comprises the steps of connecting the power lines and signal lines with input terminals ( | 11-04-2010 |
20100289499 | MONITORING DEVICE FOR MONITORING A TERMINAL OF A TERMINAL COMPONENT - A monitoring device for monitoring a terminal of a terminal component in a power supply system is described, the terminal component being connectable to the power supply system and to a monitoring system via an electrical connection element, and the monitoring device comprising a voltage measuring device for detecting a voltage value of a voltage between a first terminal and a second terminal of the electrical connection element, the first terminal and the second terminal being connectable to the monitoring system, and an evaluation device for evaluating the voltage value, the evaluation device being designed to generate an indicating signal, which indicates a faulty connection to the power supply system if the voltage value differs from a predetermined voltage value. | 11-18-2010 |
20110037479 | Method for Fault Monitoring at a Lighting Output of a Motor Vehicle - A method for fault monitoring at a lighting output of a motor vehicle. Reference current values are first measured and calculated at various reference voltages. During operation of the lighting output, operating current values and operating voltages are measured. If the operating current value at the measured operating voltage deviates from the reference current value at the corresponding reference voltage, then a fault message is output. The method is suitable for detecting a fault even for unknown lamps at the lighting output. | 02-17-2011 |
20110050244 | METHOD AND APPARATUS FOR TESTING AIRCRAFT ELECTRICAL SYSTEMS - The present invention provides a method and apparatus for testing an aircraft control system. The method comprises the steps of: coupling a test device ( | 03-03-2011 |
20110080176 | PART OF A VEHICLE AND VEHICLE COMPRISING SUCH PART - It concerns a vehicle part comprising electric cables ( | 04-07-2011 |
20110148428 | METHOD FOR MONITORING INSULATION FAULTS IN AN ELECTRIC NETWORK AND VEHICLE COMPRISING AN INSULATION FAULT MONITOR - A method for monitoring an insulation fault in an electric network with at least one electric power system supplying electric power to one or more electric loads, and at least one insulation resistance monitor is provided, wherein the at least one electric power system includes at least one electrical power source, and wherein the at least one insulation resistance monitor monitors an insulation resistance between terminal leads of the at least one electric power source and at least one reference potential. The steps are performed of disconnecting the at least one electric power source from the one or more loads by opening each terminal lead; measuring the insulation resistance between the electric circuit of at least one electrical power source and the reference potential; measuring the insulation resistance for the total electric network; closing the second terminal lead with the first terminal lead open; and measuring the insulation resistance for the total electric network. | 06-23-2011 |
20110169496 | FAULT DETECTION OF ELECTRIC CONSUMERS IN MOTOR VEHICLES - Fault detection of electric consumers in motor vehicles including at least one electric consumer switchably arranged between a first electric potential and a second electric potential. The electric consumer is switchably connected both to the first and to the second potential. A first switch is arranged between the first potential and the consumer and a second switch is arranged between the second potential and the consumer. The first and the second switch must be closed at the same time in order to operate the consumer. Fault detection is carried out when the device consuming the electricity is visibly off, in that a third electric potential is tapped at a voltage divider arranged parallel to the second switch. Fault detection is carried out by monitoring the third electric potential and the positions of the first and second switches. | 07-14-2011 |
20120161778 | SYSTEM AND METHOD FOR DETECTING AN EARTH GROUND FAULT OF AN EXTERNAL POWER SUPPLY CONNECTED TO A VEHICLE - A system and method is provided for determining the existence of a ground fault connection within a vehicle. An electrical connector may be provided for electrically connecting the vehicle to an external Alternating Current (AC) power source. The electrical connector includes a three phase electrical connector configured to receive a corresponding input voltage signal on a phase, neutral, and earth connection. A controller being configured to determine whether a faulty earth connection exists between the vehicle and the AC power source the phase connection does not exceed the predetermined phase threshold when referenced to the earth connection and the neutral connection does not exceed the predetermined neutral threshold when referenced to the earth connection or the phase connection exceeds the predetermined phase threshold when referenced to the earth connection and the neutral connection exceeds the predetermined neutral threshold when referenced to the earth connection. | 06-28-2012 |
20120212235 | METHOD AND APPARATUS FOR DETECTING THE EXISTENCE OF A SAFETY GROUND - An apparatus including a test device for assessing the quality of a safety ground is provided. The test device is configured to receive an energy signal from a power source for charging a vehicle and to generate a first output signal in response to the first energy signal. The test device is further configured to measure a characteristic of the first output signal and to provide a test signal. The test device is further configured to generate a second output signal in response to providing the test signal and to measure a characteristic of the second output signal. The test device is further configured to assess the quality of a safety ground in at least one of the power source and the vehicle based on a difference between the characteristic of the first output signal and the characteristic of the second output signal. | 08-23-2012 |
20130002262 | VEHICLE-MOUNTED SYSTEM AND INSULATION FAILURE DIAGNOSIS UNIT - A vehicle-mounted system has a high-voltage supply system having a high-voltage battery and a plurality of vehicle-mounted loads electrically connected to the battery. The high-voltage supply system includes a plurality of load portions, each load portion including one or more electric devices which consume or generate electric power. The vehicle-mounted system has a plurality of diagnosis means for detecting an insulation failure. The diagnosis means has an output portion which is connected to the corresponding load portion, and outputs a diagnosis signal. The diagnosis mean has a detector detects a state signal of the system on the basis of the input of the diagnosis signal, and a diagnosis portion which determines whether or not there is an insulation failure. | 01-03-2013 |
20130009648 | BATTERY MANAGEMENT SYSTEM AND METHOD OF CONTROLLING THE SAME - A battery management system (BMS) and a method of controlling the BMS, which are capable of increasing reliability of determination of a defect of a relay by considering not only a voltage of a battery and a voltage of an inverter but also a current between the battery and the inverter and information regarding an operational state of the relay. | 01-10-2013 |
20130106432 | GROUND FAULT DETECTOR | 05-02-2013 |
20130106433 | RESETTABLE FUSED JUMPER LEAD | 05-02-2013 |
20130162261 | METHOD AND CIRCUIT ASSEMBLY FOR THE DIAGNOSIS OF A LOAD PATH IN A VEHICLE - A method and circuit assembly for the diagnosis of a load path in a vehicle. The load path comprises a DC voltage source, a switchable load permanently connected to a negative pole and a load switch permanently connected to a positive pole, controlled by a load control signal, wherein in the closed state of the load switch a load current can be conducted through the switchable load ( | 06-27-2013 |
20130187661 | Test System for Plug-in Connectors, Aircraft or Spacecraft and Method - A test system for plug-in connectors, especially for plug-in connectors in an airplane. A transmitting device which is designed for sending out a test signal to the plug-in connectors to be tested, and comprising at least one receiving device for each plug-in connector to be tested which is electrically coupled with the respective plug-in connector and which is designed for receiving the transmitted test signal and outputting an acknowledgement signal in response to receiving the transmitted test signal. Furthermore, the present invention creates an aircraft or a spacecraft and a method. | 07-25-2013 |
20130221974 | TIME DOMAIN REFLECTOMETRY SYSTEM AND METHOD - Methods and systems are provided for determining conductor abnormalities using time reflectometry. The system includes a database configured to store data regarding an impedance of at least one element of an electric circuit. The system also includes a pulse generator for generating a signal pulse. A transmitter is in communication with the pulse generator for transmitting the signal pulse into the electric circuit. The system further includes a receiver for receiving a reflection of the signal pulse from the electric circuit. A processor in communication with the receiver and the database is configured to determine an abnormal condition based on the received reflection of the signal pulse and the data stored in the database. | 08-29-2013 |
20130257446 | METHOD AND DEVICE FOR DIAGNOSING A DISCHARGE CIRCUIT OF AN ELECTRICAL SYSTEM - A method and an apparatus for diagnosing a discharge circuit, wherein provision is made for the discharge circuit for discharging an electrical system, in particular for discharging an electrical system of a vehicle capable of being electrically driven. In order to achieve this end, means are provided which partially discharge the electrical system by means of said discharge circuit in a procedural step for diagnosing said discharge circuit. | 10-03-2013 |
20130293237 | TEST OF A TESTING DEVICE FOR DETERMINING A VOLTAGE STATE OF A HIGH-VOLTAGE VEHICLE ELECTRICAL SYSTEM - A method for testing a testing device for determining a voltage state of an on-board high-voltage electrical system of a motor vehicle includes establishing a predetermined voltage state in the on-board high-voltage electrical system by supplying a test voltage to the on-board high-voltage electrical system and determining the voltage state with the testing device and comparing the determined voltage state with the predetermined voltage state This ensures that, before maintenance work on the on-board high-voltage electrical system is performed, a voltage-free state of the on-board high-voltage electrical system determined by the testing device is actually present, thereby eliminating risk to maintenance personnel due to an accidentally applied voltage. | 11-07-2013 |
20130307555 | METHOD OF TESTING THE PERFORMANCE OF ELECTRICAL JUNCTIONS IN AN AIRCRAFT CURRENT RETURN NETWORK - A method of testing an electrical junction between a first metallic element and a second metallic element in an aircraft current return network, said network comprising a plurality of metallic elements, each of which is connected to at least two other elements, said aircraft comprising at least one element made of a composite material connected to said network. The method is remarkable in that its use does not damage the composite structure of the aircraft. | 11-21-2013 |
20130314097 | DEVICE FOR DETECTING THE INSULATION RESISTANCE OF A HIGH VOLTAGE BATTERY SYSTEM - A device for detecting the insulation resistance of a high-voltage battery system of a motor vehicle that includes a high-voltage battery and a high-voltage component which is operatively connected to terminals of the high-voltage battery via converters. The device includes a reference resistor operatively connected to the terminals of the high-voltage battery via switches, with a voltage measurement device configured to detect the voltage present between each respective terminal and a reference potential of the vehicle; a voltage measurement device configured to measure the voltage between the terminals; and a coupling circuit configured to monitor the high-voltage component when the converters are open. | 11-28-2013 |
20140002096 | INSULATION DETERIORATION DETECTION APPARATUS | 01-02-2014 |
20140021961 | ELECTRIC LEAKAGE DETECTING APPARATUS - An electric leakage detecting apparatus, in an electric leakage detecting apparatus which is insulated from a chassis ground and detects electric leakages of a battery, is provided with: a voltage dividing circuit that divides an output voltage of the battery; an electric leakage determining circuit provided at a rear stage of the voltage dividing circuit, that determines the presence of an electric leakage based on a voltage detected by a circuit that respectively connects to a positive electrode side insulation resistance or a negative electrode side insulation resistance of the battery; and a dark current inhibit circuit in which a switch and a resistance are connected in parallel, that is inserted between at least either one of wiring that connects a positive terminal of the battery and the voltage dividing circuit, and wiring that connects a negative terminal of the battery and the voltage dividing circuit. | 01-23-2014 |
20140043034 | METHOD AND DEVICE FOR DIAGNOSING A RESERVOIR CAPACITOR OF A VEHICLE PASSENGER PROTECTION SYSTEM, AND VECHICLE SAFETY SYSTEM INCORPORATING SUCH DEVICE - A method of measuring a capacitor value comprises the steps of loading the capacitor up to a given voltage value; obtaining a first measure of a time for discharging the capacitor by a fixed voltage drop, the discharge of the capacitor being caused by a first current; reloading the capacitor up to the given voltage value; obtaining a second measure of a time for discharging the capacitor by the fixed voltage drop, the discharge of the capacitor being caused by the first current and by a second current of known value added to said first current; and determining the capacitor value from the difference between the first measure and the second measure, based on the given voltage drop or the given time, respectively, and based further on the known value of the given second current. | 02-13-2014 |
20140084935 | DEVICE FOR DETECTING A DEFECT IN INSULATION - An electrical power supply includes DC source outputting Vm and a device that detects insulation defects in the DC source. The device includes input terminals connected to the source's terminals, impedances Z1 and Z2 connected in series between the input terminals, where Z1=Z2=Z and Vm/Imax03-27-2014 | |
20140103936 | METHOD FOR MONITORING INSULATION FAULTS IN AN ELECTRIC NETWORK AND VEHICLE COMPRISING AN INSULATION FAULT MONITOR - A method for monitoring an insulation fault in an electric network with at least one electric power system supplying electric power to one or more electric loads, and at least one insulation resistance monitor is provided, wherein the at least one electric power system includes at least one electrical power source, and wherein the at least one insulation resistance monitor monitors an insulation resistance between terminal leads of the at least one electric power source and at least one reference potential. The steps are performed of disconnecting the at least one electric power source from the one or more loads by opening each terminal lead; measuring the insulation resistance between the electric circuit of at least one electrical power source and the reference potential; measuring the insulation resistance for the total electric network; closing the second terminal lead with the first terminal lead open; and measuring the insulation resistance for the total electric network. | 04-17-2014 |
20140145726 | INSULATION DETECTION CIRCUIT AND METHOD THEREOF - An insulation detection circuit suitable for detecting an insulation status between a high voltage power and a low voltage power of a vehicle is disclosed. The circuit includes a first energy storage unit, a second energy storage unit, a constant current unit, and a detection unit. The first energy storage unit is coupled to the high voltage power. The second energy storage unit is coupled between the first energy storage unit and the low voltage power. The constant current unit is coupled between the first energy storage unit and the second energy storage unit. The detection unit is coupled to the second energy storage unit for detecting a current change of the second energy storage unit. When the detection unit detects that current flowing through the second energy storage unit is smaller than a predetermined value, a detection signal representing that the insulation status is abnormal is outputted. | 05-29-2014 |
20140197842 | Method for detecting an electrical fault in a generator assemblage, and means for implementation thereof - A method for identifying electrical faults in a generator assemblage, in particular of a motor vehicle, which assemblage includes a generator having a generator regulator and a rectifier having rectifier elements, the method encompassing ascertaining, in the context of at least one excitation current value of an excitation current through an excitation winding of the generator, at least one respective parameter that corresponds to a current conduction time proportion of at least one of the rectifier elements, and determining that an electrical fault exists if the at least one parameter deviates by more than a predetermined amount from an associated expected value. Also described is an apparatus for implementing the method. | 07-17-2014 |
20140285209 | METHOD AND APPARATUS FOR TESTING A CONTROL PILOT LINE - A method for checking a control pilot, referred to below as CP, line of a charging socket of an electrically drivable transportation means. The method includes closing the charging socket, as a result of which an electrical, in particular galvanic, connection is closed between the CP line and a line of the charging socket providing electrical energy, and checking a signal received via the CP line in response to the closing. Also disclosed is a corresponding apparatus. | 09-25-2014 |
20140285210 | AUTOMOTIVE VEHICLE - After turning on a switching element by receiving a discharge command from a motor ECU via a control circuit, a drive circuit of a discharge device causes, upon receipt of an overheat protection command from an overheat protection circuit, the switching element to turn off and keeps the resulting state thereof. And, the motor ECU sends the discharge command, after establishment of a diagnostic condition, to the control circuit of the discharge device and determines that the discharge device is abnormal if an electric current will not flow through a discharge resistor and the switching element. | 09-25-2014 |
20140292346 | METHOD AND DEVICE FOR MONITORING A HIGH-VOLTAGE ARRANGEMENT - Devices and methods for monitoring a high-voltage arrangement wherein a current loop runs through elements of the high-voltage arrangement that are monitored. Voltages are sensed on at least three points of the current loop. On the basis of the sensed voltages, an interruption of the current loop is detected and, in response, a high-voltage supply is interrupted. The interruption is localized on the basis of the sensed voltages. | 10-02-2014 |
20140333320 | CIRCUIT ARRANGEMENT FOR DETECTING A SHORT CIRCUIT IN A POWER SWITCH ARRANGEMENT - A circuit arrangement detects a short circuit between first and second terminal connections of a power switch for energizing a load connected to the first and second terminal connections. A first power switch is located between a high potential of a supply voltage and the first terminal connection and a second power switch is located between the second terminal connection and a low potential of the supply voltage. A first current measuring device is located in the current path of the first power switch and a second current measuring device is located in the current path of the second power switch. A first comparator compares the measured values of the first current measuring device with a first, low threshold and a second, high threshold value, and a second comparator compares the measured values of the second current measuring device with a first, low threshold and a second, high threshold value. | 11-13-2014 |
20140340094 | CURRENT TESTER - A current tester includes: a probe, a computing device for converting a voltage drop across a component to a current, and an output device for signaling a presence or non-presence of current. The computing device stores a pre-determined voltage drop/current relationship for the component. A method for detecting current in a circuit includes: connecting a current tester to the component, measuring a voltage drop across the component, converting the voltage drop to a current via the current tester, and producing a signal by the current tester indicating a presence or non-presence of current in the circuit. A method for detecting current in a circuit may also comprises: connecting probes of a testing device to a component in the circuit; determining via whether the probes are properly connected to the component; and determining a voltage drop across the component to determine the presence or non-presence of current. | 11-20-2014 |
20140354292 | METHOD AND APPARATUS FOR MONITORING A MULTI-PHASE ELECTRICAL SYSTEM ON A VEHICLE - An electric machine electrically connects to an inverter via a multi-phase power circuit. A method for monitoring the multi-phase power circuit includes non-intrusively adjusting a commanded AC electric current from the inverter after a prescribed time period and comparing a measured magnitude of AC electric current in the multi-phase power circuit with a minimum threshold. Presence of an open circuit fault in the multi-phase power circuit can be detected based upon the comparison. | 12-04-2014 |
20140375326 | DEVICE FOR DIAGNOSING THE LOSS OF A CONNECTION BETWEEN AN ELECTRONIC CONTROL MODULE AND A GROUND | 12-25-2014 |
20140375327 | DEVICE AND METHOD FOR MONITORING A VOLTAGE SUPPLY FOR A VEHICLE SYSTEM - A device for monitoring a voltage supply for a vehicle system includes a self-diagnostic function which evaluates a logic state of the comparison signal which is output by a comparison device as a function of an input signal, and checks whether a reset signal which corresponds to the output comparison signal is generatable. The self-diagnostic function recognizes a malfunction of the comparison device when the evaluated logic state of the comparison signal does not match an expected logic state. The self-diagnostic function recognizes a malfunction of the reset device when the checked logic state of the reset signal does not match an expected logic state. | 12-25-2014 |
20150008933 | METHOD AND DEVICE FOR DETECTING A USABILITY OF A CONTROL DEVICE - A method for recognizing a usability of a control device of a safety device in a vehicle includes: applying a voltage to the control device; acquiring a voltage curve or a current curve at the control device; and recognizing a usability of the control device as a function of the acquired voltage curve or of the acquired current curve. In particular, the correct polarity of an inductive actuator having a freewheeling diode is recognized, because in the case of incorrect polarity the inductive actuator is bridged by the freewheeling diode. | 01-08-2015 |
20150022215 | SYSTEM AND METHOD OF USING FLEXIBLE ECU INPUTS TO SPECIFICALLY DETERMINE THE TYPE OF ELECTRICAL FAULT ON AN INPUT - A control module includes an input module configured to operate in a normal operating state and a fault diagnosis state. The input module receives an input signal from a circuit module and generates a voltage based on the input signal. In the normal operating state, a fault diagnostic module determines whether the voltage is in a first range or a second range. The first range and the second range indicate that a fault is detected in the circuit module. The fault diagnostic module determines that the detected fault is a first fault type if the voltage is in the first range, transitions the input module from the normal operating state to the fault diagnosis state if the voltage is in the second range, and determines whether the detected fault is a second fault type or a third fault type based on the voltage in the fault diagnosis state. | 01-22-2015 |
20150115972 | APPARATUS AND METHOD FOR DIAGNOSING MALFUNCTION OF HIGH VOLTAGE RELAY DEVICE - The apparatus for diagnosing malfunction of a high voltage relay includes: first and second relays configured to connect or disconnect a battery and a circuit using the battery as a power source in each electrode; a voltage measuring unit configured to measure a first voltage between a battery side terminal or a circuit side terminal, among terminals of the first relay, and a circuit side terminal or a battery side terminal, among terminals of the second relay, and measure a second voltage between the battery side terminals or between the circuit side terminals; and a controller configured to determine whether the first or second relay malfunctions based on the first and second voltage values measured by the voltage measuring unit by controlling connection and disconnection of the first or second relay. | 04-30-2015 |
20150293163 | SYSTEM AND METHOD FOR MONITORING A MESHED CURRENT RETURN NETWORK OF AN AIRCRAFT - A method for monitoring a meshed current-return network on an aircraft, the meshed network including at least two sub-networks electrically connected by a plurality of electrical junctions, the method including: measuring a current intensity in at least one electrical junction in which a nominal current is circulating for given flight conditions of the aircraft; wirelessly transmitting the measured current intensity value; receiving the measured current intensity; comparing the measured current intensity with a reference intensity of the nominal current determined for the electrical junction for the given flight conditions; and diagnosing soundness of the electrical junction following the comparing. | 10-15-2015 |
20150331030 | METHOD OF DETECTING MECHANICAL INTERFERENCE OF A POWER CLOSURE MEMBER FOR A VEHICLE - A method of fitting a power closure member to a vehicle includes the steps of: (a) detecting, by current sensor, current drawn by a closure member actuator when the closure member is closed and a latch contacts a striker of a lock assembly for the closure member and (b) comparing, by computing device, a detected current to a predetermined current range representative of desired mechanical interference between the latch and the striker. | 11-19-2015 |
20150336556 | A HOMOGENEITY DETECTION CIRCUIT, A VALVE DRIVING SYSTEM AND A METHOD OF HOMOGENEITY DETECTION IN A VALVE DRIVING SYSTEM - A homogeneity detection circuit, a valve driving system, a vehicle, an integrated circuit and a method of homogeneity detection in a valve driving system are provided. The homogeneity detection circuit comprises a first input, a second input and a comparison circuit. The first input receives a first signal being related to a first driving signal for driving a first valve. The second input receives a second signal being related to a second driving signal for driving a second valve. The comparison circuit compares the first signal with the second signal and generates a warning signal if predetermined differences are detected between the first driving signal and the second driving signal. | 11-26-2015 |
20150346257 | Continuous Leakage Detection Circuit with Integrated Robustness Check and Balanced Fault Detection - A leakage detection circuit with integrated robustness check provides leakage detection and continuous robustness check capability. A circuit can include a first voltage divider coupled to a chassis ground and a positive terminal of a traction energy storage device (ESD). A second voltage divider, connected in series to the first voltage divider, can be coupled to the chassis ground and a negative terminal of the ESD. A third voltage divider can be coupled to both the positive and negative ESD terminals. A checkproduct based on a voltage detected at the third voltage divider can be compared to a sum VS of voltages detected at first and second voltage dividers to check for a circuit fault. Voltages detected at the first and second voltage dividers, and SOC values, can be used to detect leakage faults, including balanced leakage faults, and a fault response can be performed. | 12-03-2015 |
20150362543 | Detection of and Response to Second Leakage Detection Circuit - A system includes an isolation detection unit (IDU) having a first leakage detection circuit and being configured to determine an isolation characteristic for a voltage bus; and a circuit detection and response unit (CDRU) configured to determine whether the first leakage detection circuit is coupled to a second leakage detection circuit by a common ground. The CDRU can use a change in isolation characteristic of the voltage bus to determine whether a second detection circuit is coupled, and can characterize a coupled circuit. IDU operation and fault detection thresholds can be altered to mitigate confounding effects caused by simultaneous operation of both circuits. A system can be disposed at an electric vehicle to detect coupling of a detection circuit at a charging apparatus, or disposed at a charging apparatus to detect coupling of a leakage detection circuit at an electric vehicle. | 12-17-2015 |
20150362544 | SYSTEM FOR CONTROLLING AND DETECTING THE INTEGRITY OF AN ELECTRICAL SYSTEM IN A VEHICLE - A device for controlling and monitoring an electrical system of a vehicle and trailer while the vehicle and trailer are stationary or in motion. | 12-17-2015 |
20150377945 | DIAGNOSTIC SYSTEM FOR A CONTROLLER - An electrical circuit for a mobile machine, including an interface coupled between a controller and a plurality of sensors for accurately diagnosing faults in all of the sensor wires and the sensors themselves. This effective resolution reduces the downtime of the mobile machine and operator time by allowing faults to be timely isolated. The interface selectively couples a test signal to each of the sensor conductors, and also selectively couples a responsive returned characteristic signal to the controller, where the returned characteristic signal enables the controller to diagnose each of the plurality of conductors and sensors for faults. The electrical circuit may further include testing circuitry that can specifically determine a location of the determined fault in each of the plurality of conductors or each of the plurality of sensors. | 12-31-2015 |
20160025789 | HARNESS ANOMALY DETECTION SYSTEMS AND METHODS - A vehicle may include a traction battery, a harness electrically connected with the battery, and a controller programmed to generate harness anomaly output based on data indicative of historical resistances associated with the harness and temperature and state of charge data for the battery indicative of a current resistance associated with the harness. | 01-28-2016 |
20160025795 | WIRE BREAK DETECTION IN REDUNDANT COMMUNICATIONS - A system and method for low-cost, fault tolerant, EMI robust data communications, particularly for an EV environment. | 01-28-2016 |
20160033565 | ZONE FAULT DETECTION METHOD AND SYSTEM FOR ELECTRIC VEHICLE CHARGING SYSTEMS - A system for detecting faults in an electric vehicle charging system includes an electric vehicle supply equipment (EVSE) coupled to an electric vehicle via a cable. The EVSE includes a first charging circuit interrupting device (CCID) configured to detect faults at let-go levels between an ungrounded conductor in the cable and an external (or unintended) ground. The first CCID is also configured to detect faults above leakage current levels between a chassis of the vehicle and a power storage device of the vehicle. A second CCID is included in the cable or the vehicle to detect faults at let-go levels between an ungrounded conductor in the cable and the chassis. The system maintains grounding continuity between the electric vehicle and ground. The system thus provides protection at let-go levels while allowing a leakage current in the vehicle to be detected at a higher level for nuisance trip avoidance. | 02-04-2016 |
20160084900 | ELECTRICAL CONNECTOR FOR DETECTING DISCONTINUITIES IN AN ELECTRICAL NETWORK - The invention concerns an electrical connection member, characterised in that it is capable of detecting discontinuities in an electrical network and comprises a casing having at least three branches, each of the branches comprising, at the end of same, at least one terminal for electrical connection to a respective piece of equipment, and least one main conductor linking two terminals at the ends of two branches in the casing, at least one secondary conductor linking at least one terminal of the end of the third branch in the casing, and comprising an electrical coupler designed to inject an electrical test signal from the secondary conductor into the main conductor, and to transmit, to the secondary conductor, an electrical response signal generated by the reflection of the electrical test signal against a discontinuity encountered in the electrical network. | 03-24-2016 |
20160091547 | WEAR DETECTION SYSTEM AND A METHOD FOR DETECTING WEAR - The invention relates to a wear detection system, having an image processing device and a contact strip ( | 03-31-2016 |
20160091552 | ELECTRIC LEAK DETECTOR FOR A VEHICLE - An electric leak detector ( | 03-31-2016 |
20160116519 | SYSTEM AND METHOD FOR ELECTRICAL SHORT DETECTION - Methods and systems detect short circuits in an electrical system, such as a dynamic braking grid of a vehicle. The methods and system measure a characteristic of a current that is conducted through one or more resistive elements of an electrical system. The current is supplied to the electrical system from a power source as an applied voltage. A resistance change signal representative of a change in one or more electrical resistances of the one or more resistive elements is determined The resistance change signal can be based at least in part on a difference between the characteristic of the current that is measured and a low pass filtered value of one or more of the characteristic of the current that is measured or the applied voltage supplied by the power source. A short circuit event is identified based at least in part on the resistance change signal. | 04-28-2016 |
20160124033 | ELECTRICAL DRAIN TEST SYSTEM AND METHOD - Electrical drain test systems and methods are disclosed. An example electrical drain test device includes a battery interface design with electrical cables to connect in-line with a battery and an electrical system under test. The example electrical drain test device also includes a battery disconnect switch. The switch has a first position to electrically connect the battery and the electrical system. The switch also has a second position to electrically connect the electrical system under test to the battery through a test circuit to test the electrical system under test for parasitic drain. The example electrical drain test device includes an output device to output a conclusive pass/fail result of the test of the electrical system by analyzing current curves through predetermined criteria programmed into the device. | 05-05-2016 |
20160154044 | METHOD AND APPARATUS FOR MEASURING A PARAMETER OF A VEHICLE ELECTRICAL SYSTEM | 06-02-2016 |
20160202301 | GROUND-FAULT DETERMINATION APPARATUS | 07-14-2016 |
20160202302 | SYSTEMS FOR DETECTING ELECTRICAL FAULTS IN A VEHICLE | 07-14-2016 |
20160252555 | APPARATUS AND METHOD FOR DIAGNOSING HARDWARE IN AN INSULATION RESISTANCE MONITORING SYSTEM FOR A VEHICLE | 09-01-2016 |
20170234918 | GROUND FAULT DETECTING DEVICE | 08-17-2017 |
20180022218 | VEHICLE GROUND FAULT DETECTION APPARATUS | 01-25-2018 |
20180022595 | System, Method and Apparatus for Verifying Groundwire Connections on a Vehicle | 01-25-2018 |
20190148928 | ELECTRICAL LINK COMPRISING AN ELECTRICAL PROTECTION DEVICE | 05-16-2019 |
20220137122 | CIRCUITS AND METHODS FOR DETECTING LINE SHORT CIRCUITS AND/OR LINE INTERRUPTIONS IN DIFFERENTIALLY OPERATED LINE NETWORKS - The present disclosure relates to circuits for detecting a line short circuit and/or a line interruption in a differentially operated line network, comprising at least one control circuit configured to control at least one common-mode signal of the differentially operated line network vis-à-vis a predefined common-mode signal variable and to indicate a line short circuit and/or a line interruption in the differentially operated line network if at least one control or controlled variable of the control circuit exceeds a predefined threshold value. | 05-05-2022 |
324504000 | With trailer | 8 |
20080204033 | Integrated Circuit and Method for Monitoring and Controlling Power and for Detecting Open Load State - An integrated circuit and method for monitoring and controlling power and for identifying an open circuit state at an output port is disclosed. A minimum open circuit current value of the output port is known. A steady state current at the output port is measured for a selected number of times at selected time intervals. A subset of the steady state current values are selected and an average current value is calculated. The average current value is compared to the minimum open circuit current value (if no loads detected) or to a learned open circuit current value (if a load or trailer is detected). A possible open circuit state at the output port is reported based on the comparison. | 08-28-2008 |
20080231285 | Trailer Lighting, Control and Signaling Circuits Tester - An electronic circuit tester is disclosed which is utilized for the testing and troubleshooting of the various lighting, control and signaling circuits required in the towing of a trailer, vehicle or other conveyance. The tester generally comprises an enclosure, which may be included as a part of a wiring harness connector, or separately attached to a wiring harness connector by means of electrical wiring. The testing circuit includes a plurality of input lines, logic means, and an alerting means. The testing circuits cause a distinct alert to be produced in response to each distinct test of the trailer device driving circuits of the vehicle. | 09-25-2008 |
20080265904 | Trailer check - An apparatus for checking lights on a tow trailer prior to connecting to a tow vehicle. The apparatus comprises a substantially hollow portable housing member. The portable member includes a turn signal switch for checking the status of such turn signals on such trailer, a brake light switch for checking the status of such brake lights, a tail light switch member for checking the status of tail lights on such trailer and a switch member for turning the portable housing member on and off. There is a power source for providing power to housing member disposed in the portable housing member. A communication means and is engageable with each of the power source, the turn signal switch, the brake light switch, the tail light switch and the switch means for providing electrical communication therein. A connection means is engageable with the communication means and is disposed on the housing member for connecting the housing member to a universal wiring harness of such trailer. | 10-30-2008 |
20090212784 | Electrical lighting tester for vehicle-towed trailers - A compact, portable electrical tester to test the functionality of the lights of a lighting system of vehicle-towed commercial and utility trailers. By virtue of the presently-disclosed lighting tester, the lights of a trailer can be remotely tested by a single test taker without the presence of a tow vehicle or tow vehicle operator. Housed within the chassis of the lighting tester are a 120-volt AC/12-volt DC power supply and a set of DC test circuits. The DC test circuits are connected between the power supply and different ones of the lights of the trailer to be tested. In the preferred embodiment, each DC test circuit includes a light selection toggle switch that is connected in electrical series with a DC circuit breaker toggle switch. A particular light selection toggle switch is selectively actuated to a closed switch position so that DC power will be supplied from the power supply to illuminate a particular light or group of lights under test. A particular series connected circuit breaker toggle switch is selectively actuated to a closed circuit position to close the DC test circuit in which it is connected. Each of the light selection and circuit breaker toggle switches is accessible to be manually actuated at the front of the chassis. | 08-27-2009 |
20090302858 | Trailer signal converter - A signal converter and method of converting a signal are provided. The converter includes a power supply, microcontroller and current sensor. The microcontroller is connected to a power supply and is configured to receive inputs from a vehicle and output signals to loads of a second vehicle. The sensor is connected to the microcontroller to monitor current flow at the loads. The output channels are configured to stagger activity on the output signals. The microcontroller reduces the duty cycle of the output signals if the current flow rises above a first threshold and resumes the output signal to full strength once the current flow falls below a second threshold. The method includes receiving an input signal, sending an output signal, measuring current flow, measuring temperature, reducing the power of the output signal, and restoring the output signal. | 12-10-2009 |
20100237875 | Unified brake and light tester - A portable diagnostic device for checking electrical signalling systems of for example tractors and their trailers. The device has several receptacles for connection to a corresponding receptacle or pin connector of a trailer. One electrical circuit includes switches for energizing individual signalling or other circuits of the trailer individually, and indicating lamps and/or horns for annunciating circuit operability. Another electrical circuit includes switches for energizing individual signalling or illumination circuits individually, and indicating lamps and/or horns for annunciating circuit operability. The device, which is contained on a wheeled stand, has its own power supply and circuit overcurrent protective devices, and is thus independent. | 09-23-2010 |
20120146653 | Trailer Light Testing Apparatus - A trailer light tester for supplying DC current to at least one circuit in a trailer where a seven pin female connector is rigidly and securely attached to a side or rear panel of the trailer light tester wherein, when the seven pin female connector which is rigidly and securely attached to the light tester is connected to the seven pin male connector which is rigidly and securely attached to the front end of the body of a truck trailer, the light tester is rigidly and securely attached to and is fully supported by the seven pin connector attached to the body of the truck trailer and projects out from the front end of the truck trailer body without requiring any additional support. | 06-14-2012 |
20160054365 | ELECTRICAL CONTROLS FOR TESTING A TRAILER SYSTEM - A system is disclosed for testing electrical devices on a trailer without a truck being connected to the trailer. The system includes a control cable and a test control box. When an operator activates the test system, the box selectively powers a number of different electrical devices on the trailer through the control cable. As the different devices are powered up, the operator is able to physically inspect the trailer to be sure that each device works or does not work. The system may include one or more closed circuit cameras and a display screen operatively engaged therewith. Each camera is positioned to capture an image of one of the electrical devices and to transmit that image to the display screen where it is viewable by the operator. The cameras and screen allow the operator to remain in a single location while testing all of the devices on the trailer. | 02-25-2016 |