HOCHIKI CORPORATION Patent applications |
Patent application number | Title | Published |
20150030375 | SENSOR SYSTEM, SENSOR, AND DETACHMENT TOOL - This sensor system includes: a sensor that is provided with a sensor cover having an opening formed on one end and a sensor main body which is detachably disposed on an inner portion of the sensor cover; and a detachment tool used to detach the sensor main body from the sensor cover, wherein the sensor includes an attachment structure used to attach the sensor main body to the inner portion of the sensor cover, the detachment tool includes a detachment structure used to detach the sensor main body from the inner portion of the sensor cover, and in the detachment structure, by pushing the detachment tool into the sensor main body from the opening of the sensor cover, the sensor main body is detached from the inner portion of the sensor cover. | 01-29-2015 |
20140111803 | SCATTERED LIGHT-TYPE SMOKE DETECTION APPARATUS - [Problem to be Solved] | 04-24-2014 |
20130180737 | FIRE PREVENTION EQUIPMENT AND SPRAYING METHOD - Fire-extinguishing agent supplying equipment pressurizes a water-based fire-extinguishing agent and supplies the agent via a pipe; and the water-based fire-extinguishing agent is pressurized and supplied via the pipe to an electrification spray head installed in a protection area A, and the jetted particles of the fire-extinguishing agent are electrified and sprayed from the electrification spray head. A pulsed or alternating electrification voltage is applied to the electrification spray head from a voltage application unit | 07-18-2013 |
20130119169 | ELECTRIFICATION SPRAY HEAD - A wide protection range can be ensured by extending the flying distance of fire-extinguishing agent particles electrified and sprayed from a head. A water-based fire-extinguishing agent is pressurized and supplied to an electrification spray head | 05-16-2013 |
20130009775 | COMMUNICATION SYSTEM AND ALARM DEVICE - An alarm device including: a reception circuit section; a transmission circuit section; a sensor section which detects abnormal conditions; an alert section; an alarm registration section which, when a registration send mode is in effect to form a linked group, sends a registration event signal containing the transmission source code, and when set to a registration receive mode, registers the transmission source codes contained in event signals received from the other alarm devices in a memory; an abnormal condition monitoring section; and a transmission power switch control section which, when the registration send mode is initiated by the alarm registration section, reduces the transmission power of the transmission circuit section beyond that of normal operation. | 01-10-2013 |
20130008787 | DETECTOR - A detector includes a smoke detecting section that includes a light-receiving unit at a position at which the light-receiving unit does not directly receive light emitted by a light-emitting unit in a chamber in which a labyrinth for preventing light from directly entering from the outside and an insect net covering the rim of the labyrinth are provided, the light-receiving unit receiving light scattered by smoke flowing into the chamber. An opening hole is formed open in the surface of the cover receiving hot air current, of the detector. In the cover behind the opening hole, an electrochemical gas sensor is placed to bring gas generated by a fire through the opening hole into contact with an electrolyte solution to detect the gas by an electrode. | 01-10-2013 |
20120218099 | RELAY METHOD FOR ALARM SYSTEM AND ALARM DEVICE - The relay method for an alarm system of the present invention includes: a third process in which a reception intensity of the acknowledgement signal is measured when the source alarm device receives the acknowledgement signal, and in which, if there are one or more destination alarm devices that have not transmitted the acknowledgement signal among all of the destination alarm devices registered in advance, a destination alarm device that has the lowest reception intensity of the acknowledgement signal is assigned as a relay destination alarm device; and a fourth process in which an abnormality signal is relay-transmitted from the source alarm device, through the relay destination alarm device, to the destination alarm devices that are interconnected with the relay destination alarm device, and then, from the destination alarm device that has received the abnormality signal, a signal indicating that a sender thereof is the destination alarm device is outputted, and also an acknowledgement signal is transmitted to the source alarm device. In addition, when there are one or more all of the destination alarm devices which have not transmitted an acknowledgement signal to the source alarm device among all of the destination the alarm devices registered in advance, the third and fourth processes are repeated. | 08-30-2012 |
20120188532 | ETHYL ALCOHOL-DETECTING DEVICE - The ethyl alcohol-detecting device of the present invention includes an ethyl alcohol-detecting portion that calculates an ethyl alcohol content corresponding to an ethyl alcohol concentration, based on a first subject image stored in a memory and a reference image stored in a nonvolatile memory; an interfering substance-detecting portion that calculates a degree of interference corresponding to the concentration of an interfering substance, based on a second subject image stored in the memory and the reference image stored in the nonvolatile memory; and a determination portion that determines that ethyl alcohol has been detected when the ethyl alcohol content is equal to or higher than a first predetermined threshold and the degree of interference is less than a second predetermined threshold, and determines that ethyl alcohol has not been detected when the ethyl alcohol content is equal to or higher than the first predetermined threshold and the degree of interference is equal to or higher than the second predetermined threshold. | 07-26-2012 |
20120170035 | SMOKE SENSOR - [Problem to be Solved] | 07-05-2012 |
20110194111 | SMOKE DETECTOR - This smoke detector is provided with: a plurality of light emitting devices which emit light beams of mutually different wavelengths; and a plurality of scattered light receiving sections which receive, at a different scattering angle for each light beam of the respective wavelengths, scattered light generated due to the plurality of light beams emitted simultaneously from these light emitting devices impinging on smoke. | 08-11-2011 |
20110187415 | TRANSMISSION INPUT CIRCUIT - A transmission input circuit of the present invention is provided with: a current detection resistor which receives an input of a line current flowing through a transmission line and generates a line current detection voltage; a constant current circuit which generates a predetermined reference current; a first switch which performs a switching operation at an empty timing where a transmission current is not flowing, to thereby allow the reference current to flow from the constant current circuit to the current detection resistor, and generate a reference voltage, in which a threshold voltage corresponding to the reference current is added to a load current detection voltage corresponding to the load current; a capacitor which is connected to the current detection resistor via the first switch; a second switch which performs a switching operation in synchronization with the first switch to thereby sample-hold the reference voltage generated by the current detection resistor in the capacitor; and a comparator which receives an input of the line current detection voltage generated by means of the current detection resistor, to one of input terminals, receives an input of the reference voltage held in the capacitor to an other input terminal, and outputs a voltage component of the line current detection voltage which exceeds the reference voltage, as a transmission current detection signal. | 08-04-2011 |
20110175589 | TRANSMISSION INPUT CIRCUIT - This transmission input circuit is provided with an adjustment processing section which turns ON a switch at an empty timing where transmission current from a slave device is not flowing, to allow a reference current to flow from a constant current circuit to a current detection resistor, generates in the current detection resistor a target adjustment voltage, in which a threshold voltage corresponding to the reference current is added to a load current detection voltage corresponding to the load current, and adjusts a digital value so that a reference voltage output from a digital variable resistor matches with the target adjustment voltage. | 07-21-2011 |
20110121921 | TRANSMISSION SYSTEM - A transmission system transmits a signal from a transmission terminal to a reception terminal via a pair of transmission lines. The transmission terminal side of the transmission lines is connected to a first resistor having a predetermined resistance value depending on the characteristic impedance of the transmission lines. | 05-26-2011 |
20110080295 | FIRE-PREVENTING TERMINAL DEVICE - To provide a fire-preventing terminal device that can eliminate the need to newly lay a power line and a signal line and can avoid problems caused by battery driving. Display lights | 04-07-2011 |
20110057794 | ALARM - An alarm comprising: a transmission reception circuit unit transmitting and receiving an event signal with an other alarm; a sensor unit detecting an abnormality; an alerting unit outputting an abnormality warning; an abnormality monitoring unit receiving an abnormality detection signal from the sensor unit, while outputting the abnormality warning of a coordination source, and transmitting to the other alarm the event signal indicating an abnormality, meanwhile, outputting the abnormality warning of a coordination end when the event signal indicating an abnormality is received from the other alarm; and an inspection processing unit transmitting to the other alarm an event signal indicating a self inspection result, and, when an event signal indicating an inspection result is received from the other alarm, reporting an inspection result of a plurality of alarms in coordinated relation. | 03-10-2011 |
20110037603 | Alarm Device - The alarm device of the present invention includes a battery power supply; a sensor section that outputs an anomaly detection signal in the case of detecting an anomaly; an alert section that outputs an alarm based on the anomaly detection signal; a reception circuit section that discontinuously receives an event signal from another alarm device at every predetermined reception cycle; a transmission circuit section that transmits an event signal to the other alarm device in a transmission time that is at least the predetermined reception cycle; an anomaly monitoring section that, when the sensor section has detected an anomaly, causes the alert section to output the anomaly alarm based on the anomaly detection signal and causes the transmission of an event signal relating to the anomaly of the alarm device to the other alarm device by the transmission circuit section, and on the other hand, when the reception circuit section has received from the other alarm device an event signal relating to an anomaly of the other alarm device, causes the alert section to output the anomaly alarm; and a low battery monitoring section that, upon detecting a voltage drop of the battery power supply, causes a low battery alarm of the alarm device to be output by the alert section, and stops the transmission and reception of event signals in the transmission circuit section and the reception circuit section. | 02-17-2011 |
20110032114 | Alarming Device - The alarming device of the present invention includes a battery power supply; a sensor section that outputs an anomaly detection signal in the case of detecting an anomaly; a alert section that outputs an anomaly alarm based on the anomaly detection signal; a reception circuit section that receives an event signal from another alarming device; a transmission circuit section that transmits an event signal to the other alarming device; an anomaly monitoring section that, when the sensor section has detected an anomaly, causes the alert section to output the anomaly alarm based on the anomaly detection signal and causes the transmission circuit section to transmit an event signal according to the anomaly of the alarming device to the other alarming device, and on the other hand, when the reception circuit section has received an event signal according to an anomaly of the other alarming device from the other alarming device, causes the alert section to output the anomaly alarm; and a communication control section that detects a predetermined event and performs communication control by adjusting the transmitting and receiving of an event signal by the transmission circuit section and the reception circuit section. | 02-10-2011 |
20110025490 | ALARM DEVICE - An alarm device includes: a wireless circuit section which wirelessly exchanges event signals with an other alarm device; an alert section which outputs an alarm; an operation section which accepts predetermined operations; a sensor section which issues an abnormal condition detection signal when an abnormal condition occurred is detected within a monitoring area; an abnormal condition monitoring section which, upon receiving the abnormal condition detection signal from the sensor section, outputs an abnormal condition alarm as a linkage source from the alert section, and transmits an event signal indicating an abnormal condition to the other alarm devices, and conversely, upon receiving an event signal indicating an abnormal condition from the other alarm device, outputs an abnormal condition alarm as a linkage destination from the alert section; a communication test transmission processing section which, at a predetermined timing, transmits an event signal indicating a communication test to the other alarm device and; a communication test reception processing section which, upon receiving an event signal indicating a communication test from the other alarm device, announces the reception status of this event signal. | 02-03-2011 |
20110018706 | ALARM DEVICE AND ALARM SYSTEM - An alarm device of the present invention comprises: a wireless circuit section which wirelessly exchanges event signals with another alarm device; an alert section which outputs an abnormal condition alarm; an operation section which accepts a predetermined operation; and an abnormal condition monitoring section which, upon receiving an abnormal condition detection signal from a sensor section which detects an abnormal condition, outputs said abnormal condition alarm as a linkage source and transmits said event signal indicating an abnormal condition to the other alarm device, and upon receiving said event signal indicating an abnormal condition from said other alarm device, outputs said abnormal condition alarm as a linkage destination. The alarm device further comprises: a linked message management section which registers in a memory table and manages message information associated with said alarm device and message information associated with another device other than the alarm devices; and a linked message processing section which, upon receiving a device-specific event signal from said another device, retrieves said associated message information from said memory table and performs audio output thereof. | 01-27-2011 |
20110018705 | ALARM DEVICE - An alarm device of the invention includes: a transmitting-and-receiving circuit unit which transmits and receives an event signal with other alarm device; an alarming unit which outputs alarm; an operating unit which includes an alarm stopping unit; an interlocking source alarm output processing unit which, upon receiving abnormal-detection signal from a sensor unit which detects abnormality, outputs alarm indicating an interlocking source, and transmits the event signal indicating the abnormality to the other alarm device of an interlocking destination; an interlocking destination alarm output processing unit which, upon receiving event signal indicating the abnormality from the other alarm device, outputs alarm indicating an interlocking destination; an interlocking source alarm stop processing unit which, upon detecting an operation to the alarm stopping unit while outputting the alarm indicating the interlock source, transmits the event signal for stopping the alarm to the other alarm device and stops the alarm; and an interlocking destination alarm stop processing unit which stops an output of the alarm indicating the interlocking destination and transmits the event signal for stopping the alarm to the other alarm device, when an operation to the alarm stopping unit is detected while outputting the alarm indicating the interlocking destination, while which stops an output of the alarm indicating the interlocking destination, when the event signal for stopping the alarm from the other alarm device is received, while outputting the alarm indicating the interlocking destination. | 01-27-2011 |
20100295677 | ALARM DEVICE AND ALARM SYSTEM - An alarm device includes: a detection device which detects an occurrence of an abnormal condition within a monitoring area; a transmission device which transmits an alarm signal when the detection device detects the abnormal condition; and an output device which, after the transmission device has transmitted the alarm signal, outputs an alarm after a lapse of a predetermined time after the transmission. | 11-25-2010 |
20100281947 | FIRE DISTINGUISHING DEVICE - A fire distinguishing device includes: a detection device which detects an outbreak of a fire; a fire presence/absence distinguishing device which distinguishes the presence or absence of the fire; and a cumulative time determining device which determines the cumulative time required for distinguishing the presence or absence of the fire, in the fire presence/absence distinguishing device. The cumulative time determining device distinguishes an environment type of an environment where the detection device is installed, or a phenomenon type of a phenomenon being detected by the detection device, and further determines the cumulative time according to the distinguished environment type or phenomenon type. | 11-11-2010 |
20100238049 | COMMUNICATION SYSTEM - A communication system of the present invention is provided with a transmitting unit and a receiving unit. The transmitting unit is provided with: a transmitting device that performs transmission of signals of a predetermined frequency; and a transmission control device that, through the transmitting device, transmits a first signal containing predetermined information, and a second signal that contains identification information for identifying the receiving unit, to which this first signal is to be transmitted, and that requires, for analyzing this signal, an amount of processing less than that required for the first signal. The receiving unit is provided with: a receiving device that detects the presence or absence of a signal of the predetermined frequency and receives the signal of the predetermined frequency; and a reception control device that, in a case where this receiving device has detected the signal of the predetermined frequency, controls the receiving device to receive the signal of the predetermined frequency only during a first period of time, that determines whether or not the signal received by the receiving device contains the second signal, and that, in a case where this second signal is contained, controls the receiving device to receive the signal of the predetermined frequency only during a second period of time, which is longer than the first period of time. | 09-23-2010 |
20100219948 | COMMUNICATION SYSTEM AND ALARM DEVICE - A communication system provided with a plurality of communication devices which communicate with each other, wherein each of the communication devices includes: a storage device which stores a first code for identifying the communication device to the exclusion of others, and a second code defined so as to differ from other communication devices on the basis of the first code and a predetermined reference value; a transmission device which transmits a signal including the first code and the second code to the other communication devices; a reception device which receives the signals transmitted from the transmission devices of the other communication devices; and a control device which performs calculation using the first code and the second code included in the signal received by the reception device, and the first code stored in the storage device, and identifies the signal according to whether or not the value obtained by the above calculation matches with the second code stored in the storage device. | 09-02-2010 |
20100188235 | Alarm Unit - An alarm unit of the invention is provided with: a light emitting section; a battery power supply; a voltage booster circuit that boosts a voltage from this battery power supply to thereby generate a boosted voltage; a light emission control section that controls the voltage booster circuit to supply, with the timing at which the boosted voltage is obtained, the boosted voltage to the light emitting section, thereby intermittently driving light emission; a light receiving section that receives light from the light emitting section having been diffused by smoke; a conversion circuit that converts a received light signal from the light receiving section into received light data; a fire hazard detection section that detects a fire hazard based on the received light data from the conversion circuit; an alarm section that outputs an alarm based on a fire hazard detection signal from the fire hazard detection section; a reference voltage circuit that generates a reference voltage for the voltage booster circuit and the conversion circuit; and a clock circuit that outputs a clock signal for operating the voltage booster circuit, the light emission control section, and the conversion circuit. Furthermore, in this alarm unit, a packaged integrated circuit is provided with: a processor circuit that realizes functions of the light emission control section and the fire hazard detection section by executing a program; the voltage booster circuit; the conversion circuit; the reference voltage circuit; the clock circuit; and a control circuit of the respective circuit sections. | 07-29-2010 |
20090026354 | SEPARATE-TYPE DETECTOR - [Object] An object is to provide a separated sensor capable of synchronizing a light transmitting unit with a light receiving unit, without using a control line. | 01-29-2009 |