JP2011248791A - Fire alarm system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fire alarm system which can equalize power consumption of batteries of multiple fire alarms and can urge a person to take a prompt action on fault such as a failure in the fire alarms side.SOLUTION: A fire alarm system 1 is constituted so that a plurality of battery-driven fire alarms 2 can cooperatively operate, each of the fire alarms 2 transmits an inspection signal per prescribed period of time according to a turn for transmitting the inspection signal stored in a storage part, and one of the fire alarms 2 not receiving the inspection signal transmits the inspection signal after prescribed delay time from an end point of the prescribed period of time when not receiving the inspection signal that should be transmitted by another of the fire alarms 2 in the previous turn of its turn.

Description

  The present invention relates to a fire alarm system that includes a fire detection unit that detects the occurrence of a fire, and a plurality of fire alarm devices that wirelessly transmit and receive a fire signal are operated in an interlocked manner.

  Residential fire alarms are arranged in indoor rooms and the like, and are configured to operate in conjunction with each other. In recent years, residential fire alarm systems that transmit and receive wireless signals between residential fire alarms have been used (see, for example, Patent Document 1). That is, for example, when one house fire alarm issues a warning when a fire occurs, a wireless signal is transmitted, and a plurality of other house fire alarms installed indoors receive this wireless signal to alarm It is possible to promptly notify indoor people of the occurrence of a fire.

  In addition, residential fire alarms are battery-powered, which reduces power consumption by reducing current consumption, cutting off power supply, and alternating connections, resulting in a long battery life. It is planned. For example, in the residential fire alarm system disclosed in Patent Document 1, the receiving unit alternately repeats the wireless signal reception time and the longer suspension period to perform reception from other residential fire alarms. The battery life is long.

JP 2009-238250 A (page 6-7, FIG. 1)

  The residential fire alarm transmits, for example, an inspection signal every predetermined period, and confirms whether other residential fire alarms normally receive the fire signal. And the said confirmation is performed by receiving the reply signal transmitted with respect to the inspection signal from the fire alarm for other houses.

  In a conventional residential fire alarm system, for example, as shown in Patent Document 1, a residential fire alarm device that transmits an inspection signal and receives a response signal serves as a parent device, and another residential fire alarm device serves as a child device. It has been. In this case, the fire alarm for the house of the master unit has a problem that the power consumption is higher than that of the fire alarm for the house of the slave unit, and the battery needs to be replaced quickly.

  In addition, if there is a problem that the fire alarm for the slave of the slave unit cannot receive a check signal such as a failure, the fault is only reported by the fire alarm for the residential unit of the master unit. It is difficult to be notified quickly, and it is difficult to urgently deal with the problem. In addition, the notification may be forcibly manually stopped, and in this case, the defect may be forgotten. Furthermore, there is a problem that regular inspection is not performed if the fire alarm for the house of the master unit breaks down.

  It is an object of the present invention to provide a fire alarm system that can evenly consume the power of batteries of a plurality of fire alarm devices and can promptly respond to problems such as failures on the fire alarm side. To do.

  The fire alarm system of the present embodiment is configured by arranging a plurality of fire alarms so that they can operate in conjunction with each other. Multiple fire alarms are grouped together. And a fire alarm is comprised including a fire detection part, a transmission / reception part, an alerting | reporting part, an inspection means, a memory | storage part, and a battery.

  The fire detection unit detects a fire. For example, smoke is detected by a smoke detection unit, heat is detected by a temperature sensor such as a thermistor, and the occurrence of a fire is detected when the detected amount exceeds a preset reference value.

  The transmission / reception unit transmits / receives a radio signal between its own fire alarm and another fire alarm.

  When the fire detection unit detects a fire or when the transmission / reception unit receives a fire signal transmitted from another fire alarm grouped together, the notification unit notifies the occurrence of a fire, or the fire alarm Anomaly is reported.

  The inspection means transmits an inspection signal having its own ID number from the transmission / reception unit, and when the transmission / reception unit receives an inspection signal transmitted from another fire alarm, a response signal having its own ID number with respect to the inspection signal Is transmitted from the transmission / reception unit. Then, when the inspection signal is transmitted, when the response signal is not received from at least one of the other fire alarms, the notification unit notifies the abnormality.

  The storage unit stores the ID numbers of the grouped fire alarms and other fire alarms and the order in which the inspection signals are transmitted.

  The battery supplies driving power to each component.

  And each fire alarm transmits an inspection signal for every predetermined period according to the order memorized by the storage part. A fire alarm that does not receive an inspection signal outputs an inspection signal after a preset delay time from the end point of a predetermined period when it does not receive an inspection signal that should be transmitted from the fire alarm immediately before its turn. To be sent.

  According to the present invention, the plurality of grouped fire alarms transmit inspection signals in order, so that the battery power is consumed almost evenly and the battery capacity is reduced almost evenly. When the battery runs out, battery replacement can be performed for all the fire alarms at the same time, and the labor for battery replacement can be saved.

  In addition, the alarm unit of the fire alarm that sent the inspection signal notifies that there are abnormal fire alarms in multiple fire alarms, so it is possible to identify abnormal fire alarms and restore them to normal Thus, a plurality of fire alarms can be expected to normally notify the occurrence of a fire when a fire occurs.

  In addition, if there is a fire alarm that is normal and does not receive a check signal due to a failure or radio wave obstruction of multiple fire alarms, the fire alarm transmits a check signal to notify the abnormality. Therefore, when the order of multiple fire alarms is complete, the fire alarm that sent the inspection signal can notify each of the abnormalities. It can be expected to promptly urgently respond to the notice.

It is a schematic block diagram which shows the fire alarm system which shows Example 1 of this invention. Similarly, a fire alarm system is shown, (a) is a schematic block diagram when the first radio wave obstacle is provided, and (b) is a schematic block diagram when the second radio wave obstacle is provided. is there. Similarly, it is a schematic block diagram which shows the principal part structure of a fire alarm. Similarly, it is a schematic perspective view of a fire alarm. Similarly, it is a schematic plan view of a fire alarm. Similarly, it is a schematic side view of a fire alarm. Similarly, it is a schematic sectional side view of a fire alarm. It is a schematic block diagram which shows the fire alarm system which shows Example 2 of this invention.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  1 to 7 are drawings for explaining a fire alarm system and a fire alarm showing Embodiment 1 of the present invention.

  In FIG. 1, a fire alarm system 1 is arranged such that a plurality of fire alarms 2 operate in conjunction with each other by transmitting and receiving radio signals. That is, each fire alarm device 2 has an ID number (address), and transmits and receives radio signals to and from the fire alarm device 2 having an adjacent ID number. Also, each fire alarm 2 with ID numbers 2, 3 and 4 receives a wireless signal such as a fire signal, inspection signal or response signal when receiving a wireless signal such as a fire signal, inspection signal or response signal. Operates as a relay function. In this way, each fire alarm device 2 is configured in one group that operates in conjunction with the fire signal transmitted from any one of the fire alarm devices 2.

  In FIG. 3, the fire alarm 2 is a residential fire alarm, and includes a fire detection unit 3, a transmission / reception unit 4, a notification unit 5, an inspection unit 6 and a control unit 7 that constitute inspection means, a storage unit 8, and a battery 9. And the control part 7 controls and monitors the fire detection part 3, the transmission / reception part 4, and the alerting | reporting part 5. FIG. Hereinafter, the fire alarm system will be described as a residential fire alarm system 1, and the fire alarm will be described as a residential fire alarm 2.

  The fire detection unit 3 detects smoke and includes a light emitting element 10 and a light receiving element 11. That is, the light emitted by the light emission of the light emitting element 10 is scattered by the smoke particles, and the scattered light is incident on the light receiving element 11. A voltage corresponding to the detection amount (light reception amount) of the light receiving element 11 is amplified by the amplifier 12 and transmitted to the control unit 7 via the input / output unit 13. Then, when the smoke concentration increases and the smoke particles increase and the voltage corresponding to the detection amount detected by the light receiving element 11 becomes equal to or higher than a preset reference value, the control unit 7 determines that a fire has occurred. Thus, the fire detection unit 3 detects a fire according to the detection amount of the light receiving element 11.

  The transmission / reception unit 4 is configured to transmit and receive radio signals to and from other grouped house fire alarms 2. That is, a fire signal is transmitted from the antenna 14 as a radio signal, and a fire signal transmitted from another residential fire alarm 2 that operates in conjunction with the antenna 14 is received. The control unit 7 outputs a fire signal to the input / output unit 15 of the transmission / reception unit 4 when the fire detection unit 3 detects a fire. The transceiver 4 amplifies the fire signal with the amplifier 16 and transmits it wirelessly from the antenna 14. The fire signal received by the antenna 14 is amplified and transmitted to the control unit 7 via the input / output unit 15.

  Moreover, the transmission / reception part 4 transmits / receives an inspection signal. The inspection signal is a signal equivalent to the fire signal and has an identification symbol for distinguishing it from the fire signal. The inspection signal transmitted from the antenna 14 is input from the control unit 7 to the input / output unit 15, and the inspection signal received by the antenna 14 is output from the input / output unit 15 to the inspection unit 6 and the control unit 7.

  Further, the transmission / reception unit 4 transmits a response signal having its own ID number, and receives a response signal having an ID number transmitted from another residential fire alarm device 2. The received response signal is output from the input / output unit 15 to the inspection unit 6 and the control unit 7. Moreover, the transmission / reception part 4 is formed so that a fire interlocking signal, an inspection interlocking signal, or a response interlocking signal may be transmitted / received, as demonstrated in FIG. Hereinafter, a fire signal, an inspection signal, or a response signal includes a fire-linked signal, an inspection-linked signal, or a response-linked signal, respectively.

  The notification unit 5 includes a light emitting diode 17 as an indicator lamp and a speaker 18 that emits sound. When the fire detection unit 3 detects a fire, or when the transmission / reception unit 4 receives a fire signal transmitted from another residential fire alarm device 2, the notification unit 5 is sent from the control unit 7 to the input unit 19. Alarm data and blink data control signals are transmitted. The light emitting diode 17 blinks at intervals of, for example, 0.5 seconds according to the blinking data. In addition, the alarm data is amplified by the amplifier 20 in the speaker 18 and, for example, a voice message “Pupy, fire, fire” is issued. Thereby, an indoor person is notified of the occurrence of a fire.

  Further, the notification unit 5 transmits an abnormal data signal from the control unit 7. The light emitting diode 17 blinks, for example, at intervals of 1 second, for example, and the speaker 18 emits a voice message such as “There is a reception abnormality”. That is, it is notified that there is a residential fire alarm 2 that cannot normally receive a fire signal. This notification is performed every predetermined time (for example, 30 minutes).

  In addition, although the alerting | reporting part 5 is integrally formed to perform both alerting | reporting of fire occurrence and abnormal alerting | reporting, you may be comprised by the separate body which performs these alerting | reporting, respectively.

  The inspection unit 6 and the control unit 7 form an inspection unit. The inspection unit 6 is connected to an operation switch 21 and includes a timer 22. The control unit 7 is formed in a micro computer (microcomputer), and includes a CPU (central processing unit) 23, a ROM 24, and a RAM 25. The CPU 23 performs various calculations and controls based on the program. The ROM 24 stores a program, fire notification voice message data and display data, abnormal voice message data and display data, smoke detection reference values, a predetermined time, a predetermined period, a delay time, and the like. The RAM 25 stores various data such as data transmitted from the inspection unit 6.

  The control unit 7 includes a storage unit 8. The memory | storage part 8 memorize | stores the order which transmits the inspection number of the ID number of the own house fire alarm device 2, the ID number of the other house fire alarm device 2, and each house fire alarm device 2 set in advance. is doing. In FIG. 1, for example, the house fire alarm 2 with ID number 1, the house fire alarm 2 with ID number 2,..., The house fire alarm 2 with ID number 5, and the ID number 1 This is repeated thereafter as the residential fire alarm 2. That is, they are rotated in the increasing order of the ID numbers of the fire alarms 2 for each house.

  In FIG. 3, when the operation switch 21 is turned on / off, the inspection unit 6 is configured to output an operation control signal to the control unit 7 and to transmit an inspection signal from the transmission / reception unit 4 under the control of the control unit 7. Yes. The inspection unit 6 outputs an inspection start signal to the control unit 7 every predetermined period (for example, 24 hours) according to the time measured by the timer 22. The control unit 7 determines whether or not the order of transmitting the inspection signal is based on the order of the fire alarms 2 for each house stored in the storage unit 8. 4 is transmitted. That is, the control unit 7 stores the ID number of the inspection signal in the storage unit 8 and the storage unit 8 when the transmission / reception unit 4 receives the inspection signal transmitted from the other house fire alarm 2. Based on the stored ID number of the house fire alarm 2 and the order in which the inspection signal is transmitted, the order of the received inspection signal and the order of its own ID number are calculated and stored. Store in part 8. Then, when the inspection start signal is output from the inspection unit 6 when the order of the own ID number is the next order, the inspection signal having the own ID number is transmitted from the transmission / reception unit 4 to another house fire alarm. 2 is transmitted. Thus, each grouped house fire alarm 2 transmits an inspection signal at predetermined intervals according to the order stored in the storage unit 8.

  Moreover, when the control part 7 does not receive an inspection signal in the transmission / reception part 4 even if predetermined period passes, based on ID number and order of each house fire alarm 2 memorize | stored in the memory | storage part 8, It is determined whether or not the inspection signal to be transmitted when the predetermined period elapses is an inspection signal transmitted from the fire alarm 2 for houses in the immediately preceding order. And when the said inspection signal is an inspection signal which should be transmitted from the fire alarm 2 for houses immediately before the turn of self, after a predetermined delay time (for example, 20 minutes) from the end point of a predetermined period, self The inspection signal having the ID number is transmitted from the transmission / reception unit 4.

  When the control unit 7 does not receive the inspection signal even after the preset delay time has elapsed from the end point of the predetermined period, the control unit 7 sets the order to the next order for each delay time and The order of the order of its own ID number is calculated and overwritten in the storage unit 8 and stored. Then, when the self-order is the next order and the inspection signal to be transmitted from the fire alarm 2 for the house immediately before the self-order is not received even if the delay time has elapsed, An inspection signal having an ID number is transmitted from the transmission / reception unit 4.

  And the control part 7 transmits the reply signal which has an own ID number with respect to an inspection signal from the transmission / reception part 4, when the transmission / reception part 4 receives the inspection signal transmitted from the fire alarm 2 for other houses.

  When the transmission / reception unit 4 receives the response signal transmitted from another residential fire alarm device 2 when the inspection signal is transmitted, the control unit 7 inputs the response signal and the ID number assigned to the response signal. And the ID number stored in the storage unit 8 are compared. And, depending on whether the ID number assigned to the response signal is in the ID number stored in the storage unit 8, is there another fire alarm 2 for house that does not transmit / receive radio signals to / from the transmission / reception unit 4? Judge whether or not. When there is at least one other residential fire alarm device 2 that does not transmit / receive a radio signal, abnormal data is transmitted to the notification unit 5 and the abnormality is notified from the notification unit 5. That is, when the response signal is not received from at least one of the other residential fire alarms 2 grouped when the inspection signal is transmitted, the notification unit 5 notifies the abnormality.

  Further, in addition to performing the above-described control, the control unit 7 performs an ON operation of the operation switch 21 when the notification unit 5 notifies the occurrence of a fire, and transmits a stop signal from the inspection unit 6. It is configured to stop transmission of alarm data and flashing data control signals for notifying the occurrence of a fire over a certain period, for example, 10 minutes. Thereby, the alerting | reporting of the fire occurrence by the alerting | reporting part 5 is stopped. When the operation of the operation switch 21 is turned on, the fire alarm 2 for the house where the operation switch 21 is turned on among the plurality of house fire alarms 2 that are operated in conjunction with the fire is stopped. This is done to check whether it is detected.

  Further, the control unit 7 automatically sets the frequency of the radio signal transmitted from the transmission / reception unit 4. That is, when the residential fire alarm device 2 is installed, in one residential fire alarm device 2, a radio wave transmitted from an external electrical device is received by the transmission / reception unit 4, and the frequency range of the radio wave is not. The frequency of a radio signal is set from a standardized frequency such as specific power-saving radio. Then, a setting signal is transmitted from one residential fire alarm 2 to another residential fire alarm 2, and the frequency of the radio signal is stored in the ROM 24. Thereby, the control part 7 of each fire alarm 2 for houses transmits a radio signal with the said frequency.

  A battery 9 is connected to the control unit 7. The battery 9 is a lithium battery, for example. The control unit 7 supplies drive power to the fire detection unit 3 or the inspection unit 6 by the control. The control unit 7 supplies low current consumption to the fire detection unit 3, the transmission / reception unit 4, the inspection unit 6, and the like during normal operation, and supplies normal current when they perform detection operation. The notification unit 5 is supplied with a normal current in the event of a fire or an abnormality, and the current supply is interrupted or a low current consumption is supplied during a normal operation. That is, the power consumption of the battery 9 is reduced as much as possible so that the battery 9 has a long life.

  The fire detection unit 3 is configured as a smoke detection unit 26, and the transmission / reception unit 4 or the control unit 7 is configured as a wireless unit 27.

  As shown in FIGS. 4 and 5, the residential fire alarm device 2 includes a smoke detection unit 26 and a wireless unit 27 (not shown) in a case main body 28 constituting the fire alarm main body.

  The case main body 28 has a circular shape when the residential fire alarm 2 is viewed in plan, and includes a cover 29 and a base portion 30 to which the cover 29 is detachably attached. The base part 30 has an attachment surface (not shown) attached to the ceiling or the like.

  The cover 29 has a cover lid portion 31 protruding in the height direction from the cover surface 29a, and an opening portion 32 provided between the cover lid portion 31 and the cover surface 29a for introducing smoke. Configured. The cover lid part 31 has a circular shape when the residential fire alarm 2 is viewed in plan, and is configured integrally with the cover 29 via the extended part 29 b of the cover 29.

  An operation switch 21 and a notification opening groove 33 are provided on the cover 29. The operation switch 21 is turned on when pressed. The operation switch 21 is formed of a material that transmits light from the light-emitting diode 17 having an operation portion provided therein. The notification opening groove 33 is a through-hole for effectively transmitting sound from the speaker 18 or the like provided in the case body 28 to the outside.

  As shown in FIG. 6, the smoke detection unit 26 is configured, for example, in a cylindrical shape, and the entire outer peripheral surface of the side surface portion 26a is configured as an introduction portion for introducing smoke. On the outer peripheral surface of the side surface portion 26a, a non-illustrated insect net or the like is provided so that a gas such as smoke can pass and insects do not enter.

  In addition, the fire detection unit 3 is housed inside the smoke detection unit 26. Although not shown, the light emitting element 10 and the light receiving element 11 are concentrically arranged, and the line segment connecting the center of the concentric circle and each of the light emitting element 10 and the light receiving element 11 is arranged at a predetermined angle. Has been. The smoke detection unit 26 periodically emits light from the light emitting element 10 when the power is on. A fire is detected according to the amount of smoke that has entered.

  As shown in FIG. 7, the case main body 28 is provided with an insole member 34 attached to the cover 29. The wireless unit 27 is fixed to the midsole member 34. The antenna 14 extends from the wireless unit 27.

  A battery housing portion 35 is provided on the midsole member 34. A lithium battery 9 as a battery is accommodated in the battery accommodating portion 35.

  As shown in FIG. 1, a plurality of, for example, five of the above-described residential fire alarm devices 2 are arranged so as to be capable of interlocking operation, whereby a residential fire alarm system 1 as a fire alarm system is configured. Yes. When one house fire alarm 2 detects the occurrence of a fire, the transmission / reception unit 4 of each house fire alarm 2 transmits and receives a radio signal of the fire signal, and the notification unit 5 of each house fire alarm 2 A fire is reported from.

  And each fire alarm 2 for houses transmits an inspection signal for every predetermined period, for example every 24 hours, in the order set beforehand memorized by storage part 8. The residential fire alarm 2 that has received the inspection signal transmits a response signal having its own ID number. The residential fire alarm 2 that has transmitted the inspection signal determines that each residential fire alarm 2 is normal by receiving response signals from all the residential fire alarms 2. That is, each residential fire alarm device 2 determines that the notification unit 5 can notify the occurrence of a fire when a fire occurs indoors. And when a reply signal is not transmitted even from one of the other fire alarms 2 for houses, abnormality is notified by the own alerting | reporting part 5. FIG.

  Next, the operation of the first embodiment of the present invention will be described.

  The plurality of house fire alarms 2 grouped are driven by the battery 9 and transmit inspection signals every predetermined period (for example, 24 hours) according to the order stored in the storage unit 8. In FIG. 1, for example, inspection signals are transmitted in order of the house fire alarms 2 of ID number 1, ID number 2, ID number 3, ID number 4, and ID number 5 every predetermined period. At this time, the residential fire alarm device 2 that transmits the inspection signal consumes the electric power (amount of charge) of the battery 9 as much as the inspection signal is transmitted.

  The other house fire alarms 2 except for the house fire alarm 2 that has transmitted the inspection signal receive the inspection signal and have sufficient battery life, and the fire detection unit 3 detects the fire or When the notification unit is in a state where the fire occurrence can be normally notified by receiving the fire signal, a response signal to the inspection signal is transmitted. When receiving the inspection signal and transmitting the response signal, the control unit 7 supplies the normal current from the battery 9 to the transmission / reception unit 4 operating with low current consumption. Therefore, the power of the battery 9 is consumed correspondingly.

  The residential fire alarm 2 that has transmitted the inspection signal receives the response signal transmitted from the other residential fire alarm 2. Thereby, the notification of the abnormality in the alerting | reporting part 5 is not performed. Therefore, it is confirmed that each residential fire alarm 2 of the residential fire alarm system 1 can normally notify the occurrence of a fire.

  As described above, the residential fire alarm system 1 transmits the inspection signal at predetermined intervals according to the order in which the residential fire alarms 2 are stored in the storage unit 8, so that the power of the batteries 9 is approximately equal. As the battery capacity is consumed, the battery capacity decreases almost evenly, and the fire alarms 2 for each house can be almost completely discharged. Therefore, the battery replacement can be performed simultaneously for each residential fire alarm device 2, and labor saving of the battery 9 replacement work can be achieved.

  Then, as shown in FIG. 2A, for example, a radio wave obstacle 36 such as a metal shelf is installed between the residential fire alarm 2 with ID number 2 and the residential fire alarm 2 with ID number 3. It is assumed that a case in which a wireless signal cannot be transmitted / received between the fire alarms 2 and 2 for the house has occurred. At this time, the residential fire alarm 2 with ID number 3 is not out of order and can transmit and receive radio signals between the residential fire alarm 2 with ID number 3 and the residential fire alarm 2 with ID number 4 It has become.

  For example, the house fire alarm device 2 with ID number 1 is in the order of transmitting the inspection signal, and the house fire alarm device 2 with ID number 1 transmits the inspection signal. At this time, since the wireless signal cannot be transmitted / received between the residential fire alarm 2 of ID number 2 and the residential fire alarm 2 of ID number 3, the residential fire alarm 2 of ID number 1 is ID number 2 The response signal from the residential fire alarm 2 is received, but the response signal is not received from ID number 3 to ID number 5. The residential fire alarm 2 with the ID number 1 performs an abnormal notification by the notification unit 5. This notification may be performed continuously, but is performed over a set time (for example, 30 seconds) every certain time (for example, 30 minutes) in order to suppress the power consumption of the battery 9.

  When the house fire alarms 2 with ID numbers 3 to 5 do not receive the inspection signal transmitted from the house fire alarm 2 with ID number 1, the control units 7 store them in the storage unit 8. The inspection signal transmitted according to the passage of the predetermined period should be transmitted from the house fire alarm 2 in the immediately preceding order based on the order in which the inspection signals are transmitted and the order transmitted last time. Judge that it is not an inspection signal. For example, the house fire alarm device 2 with ID number 3 is not the inspection signal to be transmitted from the house fire alarm device 2 with ID number 2 because the inspection signal is transmitted from the house fire alarm device 2 with ID number 1. to decide. Thereby, each house fire alarm 2 of ID number 3-ID number 5 does not transmit an inspection signal. This is because each house fire alarm device 2 transmits a check signal every predetermined period according to the order stored in the storage unit 8 and, as will be described later, a house fire alarm that does not receive a check signal. The device 2 transmits the inspection signal when it does not receive the inspection signal to be transmitted from the fire alarm device 2 for the house immediately before its turn.

  And after a predetermined period (for example, 24 hours), according to the order memorize | stored in the memory | storage part 8, the fire alarm 2 for houses of ID number 2 transmits an inspection signal. The house fire alarm device 2 with ID number 2 receives the response signal from the house fire alarm device 2 with ID number 1 by the radio wave obstacle 36, but each house fire alarm with ID numbers 3 to 5 No response signal is received from the device 2. Thereby, abnormality is alert | reported by the alerting | reporting part 5 of the fire alarm 2 for houses of ID number 2. FIG.

  The house fire alarm 2 with ID number 3 that does not receive the inspection signal is transmitted from the house fire alarm 2 with ID number 2 whose control signal is transmitted immediately before its own order by the control unit 7. It is determined that the inspection signal is to be performed. At this time, the residential fire alarm device 2 with ID number 3 has an inspection signal after a preset delay time (for example, 20 minutes) from the end point of the predetermined period when the residential fire alarm device 2 with ID number 2 transmits the inspection signal. Send.

  The residential fire alarm device 2 with ID number 3 receives the response signal from each residential fire alarm device 2 with ID numbers 4 and 5 by the radio wave obstacle 36. No response signal is received from the alarm device 2. Thereby, abnormality is alert | reported by the alerting | reporting part 5 of the fire alarm 2 for houses of ID number 3. FIG.

  Then, after each predetermined period, in accordance with the order stored in the storage unit 8, inspection signals are sequentially transmitted from the residential fire alarm devices 2 with ID numbers 4 and 5, and the ID numbers 4 and 5 are respectively transmitted. Abnormality is notified by the notification unit 5 of the fire alarm 2 for a house. Thus, when there is a radio wave obstruction 36, when the order of the plurality of house fire alarms 2 grouped is completed, an abnormality is notified in all the house fire alarms 2 that have transmitted the inspection signal.

  Further, as shown in FIG. 2B, for example, a radio wave obstruction 37 such as a metal shelf is provided between the residential fire alarm 2 with ID number 3 and each residential fire alarm 2 with ID numbers 2 and 4. It is assumed that there is a case where a wireless signal cannot be transmitted and received between the house fire alarm 2 with ID number 3 and the house fire alarm 2 with ID numbers 2 and 4. Alternatively, it is assumed that the residential fire alarm 2 with ID number 3 is out of order. At this time, each house fire alarm 2 of ID number 3 to ID number 5 does not receive the inspection signal transmitted from each house fire alarm 2 of ID numbers 1 and 2, and transmits the inspection signal. This is a residential fire alarm device 2 in a sequential order.

  The fire alarm 2 for house with ID number 3 does not receive the inspection signal transmitted every predetermined period when it is not a failure, and the inspection signal not received by the control unit 7 is the order immediately before its own order. When it is determined that the inspection signal is to be transmitted from the residential fire alarm device 2 with ID number 2, the preset delay time from the end point of the predetermined period in which the residential fire alarm device 2 with ID number 2 transmits the inspection signal An inspection signal is transmitted after (for example, 20 minutes).

  The house fire alarm 2 with ID number 3 is not received by all the house fire alarms 2 due to the radio wave obstacle 37 and does not receive a response signal from all the house fire alarms 2. . Thereby, abnormality is alert | reported by the alerting | reporting part 5 of the fire alarm 2 for houses of ID number 3. FIG.

  And the house fire alarm 2 of ID number 4 which is the 2nd house fire alarm 2 which the order which does not receive a check signal continues is the control part 7 from the house fire alarm 2 of ID number 3 When the inspection signal to be transmitted is not received even when the delay time has elapsed since the inspection signal was transmitted, the inspection signal having its own ID number is transmitted. This is because even when the residential fire alarm 2 with ID number 3 is out of order, the delay time from the time when the inspection signal is calculated to be transmitted from the residential fire alarm 2 with ID number 3 is calculated. If no inspection signal is received even after the elapse of time, an inspection signal having its own ID number is transmitted.

  The residential fire alarm 2 with ID number 4 receives the response signal from the residential fire alarm 2 with ID number 5, but responds from each residential fire alarm 2 with ID number 1 to ID number 3. Since the signal is not received, the notification unit 5 notifies the abnormality.

  If the residential fire alarm 2 with ID number 4 is located inside the radio wave obstacle 37 together with the residential fire alarm 2 with ID number 3, or the residential fire alarm 2 with ID number 4 fails. In the case where the fire alarm device 2 for ID No. 5 is used, the inspection signal is output even if the delay time elapses from the time when the inspection signal is calculated to be transmitted from the fire alarm device 2 for ID No. 4 When the signal is not received, an inspection signal having its own ID number is transmitted. That is, when a plurality of residential fire alarms 2 in the order in which the inspection signals are transmitted do not receive the inspection signal, the second and subsequent residential fire alarms 2 are in the order of the immediately preceding residential fire alarms. When the inspection signal to be transmitted from the alarm device 2 is not received, the inspection signal having its own ID number is sequentially transmitted every time the delay time elapses.

  As described above, when each house fire alarm 2 does not receive a response signal from at least one of the other house fire alarms 2 when the inspection signal is transmitted, the notification unit 5 notifies the abnormality. It is possible to notify that there is an abnormal house fire alarm 2 in the grouped multiple house fire alarms 2, and to identify the abnormal house fire alarm 2 It is possible to return to normal, whereby the plurality of residential fire alarms 2 can normally notify the occurrence of a fire when a fire occurs.

  Further, if there is a fire alarm 2 for a house that normally operates and does not receive a check signal due to any failure of the plurality of fire alarms 2 for a house or radio wave obstacles 36, 37, etc., Since the fire alarm device 2 is configured to transmit an inspection signal based on the order stored in the storage unit 8 to notify the abnormality, the inspection signal is transmitted when the order of the plurality of residential fire alarm devices 2 is completed. It is possible to notify the abnormality by the house fire alarm 2 that has been made, and thereby, it is possible to promptly notify an indoor person that there is an abnormality in the house fire alarm 2 and prompt an emergency response. .

  FIG. 8 is a schematic block diagram showing a fire alarm system showing a second embodiment of the present invention. The same parts as those in FIG. 1 are denoted by the same reference numerals, and description thereof is omitted.

  The residential fire alarm system 38 as the fire alarm system shown in FIG. 8 is the same as the residential fire alarm system 1 shown in FIG. It is formed and arranged so that signals can be transmitted and received. And the radio wave obstruction 39 is installed so that the fire alarm 2 for houses of ID number 3 may be surrounded. Or the fire alarm 2 for houses of ID number 3 is out of order.

  As in the description of FIGS. 2A and 2B, the residential fire alarm 2 with ID number 3 responds from each residential fire alarm 2 with ID numbers 1, 2, 4, and 5. Since the signal is not received, the notification section 5 reports the abnormality. Moreover, since each house fire alarm device 2 with ID numbers 1, 2, 4, and 5 does not receive a response signal from the house fire alarm device 2 with ID number 3, each notification section 5 notifies the abnormality. And when the order which transmits a check signal is completed, abnormality is alert | reported by all the fire alarm devices 2 for houses which transmitted the check signal.

  In this way, if there is a residential fire alarm 2 that does not receive a check signal due to a malfunction of one of the grouped residential fire alarms 2 or a radio wave obstacle 39, etc. Since the fire alarm device 2 for a house notifies the abnormality by transmitting a check signal, when the order of the plurality of fire alarm devices 2 for a house is completed, the fire alarm device 2 for a house that has transmitted a check signal Each abnormality can be notified, and it can be expected to promptly notify an indoor person that there is an abnormality in the residential fire alarm 2 and prompt an urgent response.

  DESCRIPTION OF SYMBOLS 1,38 ... Residential fire alarm system as a fire alarm system, 2 ... Residential fire alarm as a fire alarm device, 3 ... Fire detection part, 4 ... Transmission / reception part, 5 ... Notification part, 6 ... Construct inspection means An inspection unit, 7 ... a control unit constituting an inspection means, 8 ... a storage unit, 9 ... a battery

Claims (2)

A fire detection unit for detecting a fire;
A transmission / reception unit that transmits and receives radio signals to and from other grouped fire alarms;
A notification unit for notifying the occurrence of a fire when the fire detection unit detects a fire or when the transmission / reception unit receives a fire signal transmitted from the other fire alarm;
Transmitting a check signal having its own ID number from the transmission / reception unit, and when the transmission / reception unit receives the check signal transmitted from the other fire alarm, a response signal having its own ID number for the check signal is transmitted / received Inspection means for notifying the abnormality in the notification section when the response signal is not received from at least one of the other fire alarms when the inspection signal is transmitted;
A storage unit for storing the ID numbers of the self and the other fire alarm devices and the order in which the inspection signals are transmitted;
A battery for supplying drive power;
A plurality of fire alarms equipped with
Each fire alarm transmits a check signal every predetermined period in accordance with the order stored in the storage unit, and a fire alarm that does not receive the check signal is from a fire alarm in the order immediately before its own order. A fire alarm system, wherein an inspection signal is transmitted after a preset delay time from an end point of the predetermined period when an inspection signal to be transmitted is not received.   When a plurality of fire alarms in sequence do not receive an inspection signal, the second and subsequent fire alarms of the plurality of fire alarms should be transmitted from the fire alarm in the immediately preceding order. 2. The fire alarm system according to claim 1, wherein when the inspection signal is not received, the inspection signal is sequentially transmitted every time the delay time elapses.