JP4690669B2 - Alarm - Google Patents

Description

  The present invention relates to an alarm device that detects an abnormality in a monitoring area and issues an alarm.

  2. Description of the Related Art Conventionally, an alarm device that is installed in a monitoring area and detects various abnormalities occurring in the monitoring area and issues an alarm has been widely used. For example, in general buildings, underground malls, offices, or general houses, gas alarms that detect gas and emit gas leak alarms, and fire alarms that detect smoke and heat and generate fire alarms are used. As an example of such an alarm device, Patent Document 1 (Japanese Patent Laid-Open No. 10-124769) discloses an alarm device used by being attached to a ceiling surface or wall surface of a general house or the like. In such an alarm device, when an abnormality is detected, the alarm lamp is lit and the buzzer is simply continuously sounded using the power supplied from the power source.

  In addition, conventionally, when multiple alarm devices are connected by wire and an abnormality is detected by one alarm device, an alarm that sends an interlock signal from this alarm device to another alarm device to perform an interlock alarm. A system was also proposed. Various forms of connection of a plurality of alarm devices in such an alarm system have been proposed, and as one of them, a form in which a plurality of alarm devices are connected by lead wires has been proposed. In such a system, when an abnormality is detected by one alarm device, the lead wire is short-circuited to form a closed loop, and an interlocking signal is transmitted to another alarm device. However, even in such an interlocking system, a closed loop is simply continuously formed while an abnormality is detected, and the interlocking signal is continuously transmitted. It was broken.

JP-A-10-124769

  However, in such a conventional alarm device, alarm output is simply performed continuously when an abnormality is detected, so that power consumption is relatively large, which may violate the recent needs for power consumption reduction.

  In particular, there has been proposed an alarm device with a built-in battery as a power source so that it can be easily installed in a place where there is no outlet nearby. In such an alarm device, when an abnormality is detected, the alarm is simply continuously performed using the power supplied from the battery. Alarm output could be difficult.

  Furthermore, in an alarm system including a plurality of alarm devices, a battery-type alarm device and an alarm device that obtains electric power from a commercial power source may be mixed and linked. For example, in a residential alarm system in which a fire gas leak alarm that detects fire and gas leaks and a fire alarm that detects only fire are connected by wire, only the fire gas leak alarm is connected to a commercial power supply. The fire alarm may be battery powered. In this case, an abnormality is detected by the fire gas leak alarm, and when the fire gas leak alarm device sends an interlock signal to the fire alarm device to perform the interlock alarm, the fire gas leak alarm device acquires power from the commercial power supply. Therefore, there is no problem even if the interlock signal is output for a long time, but since the fire alarm device obtains power from the battery, it may be difficult to detect an abnormality and output the alarm for a long time. there were.

  The present invention has been made in view of the above, and provides an alarm device that can reduce power consumption required for an alarm and can extend the alarmable period in a battery-powered alarm device. With the goal.

In order to solve the above-described problems and achieve the object, the alarm device according to claim 1 is an alarm device that detects an abnormality in a monitoring region and issues an alarm, and detects the abnormality occurrence. When an abnormality is detected by the detection means, the abnormality occurrence detection means, an alarm output means for performing a predetermined control for outputting an alarm, and a control for alarm output by the alarm output means are discontinuous. Alarm control means for performing a predetermined control to automatically perform, and the abnormality occurrence detection means detects the occurrence of the abnormality by determining whether or not the interlocking signal is received from another alarm device. Interlocking signal detection means to perform, wherein the alarm control means is intermittent detection control means for intermittently determining whether or not the interlocking signal is received by the interlocking signal detection means , and a capacity of a battery as a power source of the alarm device Remaining amount Higher the less, to extend the intervals of intermittent judgment of the presence or absence of reception of the interlocking signal the intermittent detection control means causes said interlock signal detecting means and.

Further, the alarm device according to claim 2 is the alarm device according to claim 1, wherein when the interlock signal from the other alarm device is intermittently transmitted, the interlock signal detection unit detects the other alarm device. Only when it is determined that the interlock signal from the alarm device has been received a predetermined number of times or more, the alarm is output by the alarm output means.

Further, in the alarm device according to claim 3, in the alarm device according to claim 1 or 2, when the interlocking signal from the other alarm device is intermittently transmitted, the intermittent detection control means includes the The intermittent determination period for the presence or absence of reception of the interlocking signal to be performed by the interlocking signal detecting means is set to be equal to or longer than the intermittent transmission period of the interlocking signal from the other alarm device.

According to the alarm device of the first aspect, the power consumption required for the alarm output can be reduced by causing the control for the alarm output to be performed discontinuously. In particular, in an alarm device using a battery as a power source, the power consumption of the battery can be reduced, the alarmable period can be substantially extended, and the reliability of abnormality detection can be further improved. .
In particular, it is possible to reduce the power consumption required for interlocking alarms with other alarm devices by intermittently determining whether or not the interlocking signal is received. The possible period can be substantially extended.
In addition, an interlocking alarm can be performed at an optimum interval as seen from the remaining battery level.

Moreover, according to the alarm device of Claim 2, the reliability of the interlocking alarm can be improved.

According to the alarm device of the third aspect, the interlocking signal can be reliably detected at the interlocking destination.

  Embodiments of an alarm device according to the present invention will be described below in detail with reference to the accompanying drawings. [I] First, the basic concept of the present invention will be described, then [II] each embodiment of the present invention will be described, and [III] Finally, modifications to the embodiment of the present invention will be described.

[I] Basic concept of the present invention First, the basic concept of the present invention will be described. The present invention relates to an alarm device that detects an abnormality in a monitoring area and issues an alarm. Here, a specific monitoring area is arbitrary, and can be arranged in each room such as a kitchen and a bedroom of a general house and each room of an office. Moreover, the abnormality detection target is arbitrary, for example, it detects smoke and issues a fire alarm, detects gas and issues a gas leak alarm, or detects carbon monoxide (CO) and incomplete combustion An alarm can be issued.

  Here, as the installation and operation mode of such an alarm device, there are a case where it is used alone and a case where it is used in conjunction with another alarm device. That is, when an abnormality is detected by a specific alarm device, an alarm is given only by the alarm device (hereinafter referred to as “single alarm”), and when an abnormality is detected by a specific alarm device, the alarm device In some cases, an alarm is issued by another alarm device (hereinafter referred to as “linked alarm”). In the following, an alarm device that transmits an interlock signal is referred to as an “interlock source” alarm device, and an alarm device that receives an interlock signal and issues an interlock alarm is referred to as an “interlock destination” alarm device. In each of the following embodiments, a case where a linked alarm is performed will be described. However, the present invention can be similarly applied to a case where a single alarm is performed.

  Under such a premise, the present invention is characterized in that alarm output is performed discontinuously when an abnormality is detected. As a result, the power consumption of the alarm device can be reduced as compared with the conventional case where alarms are output continuously. As a form of this abnormality detection, there are a case where an alarm is detected by the alarm device itself, and a case where it is determined that an abnormality has occurred upon receipt of an interlocking signal from another alarm device. Although the specific form of the alarm output is arbitrary, for example, it is conceivable to turn on or blink an alarm lamp such as an LED (Light Emitting Diode) or to sound a buzzer. Further, “non-continuous” means that alarm output is stopped at least instantaneously during a period in which an abnormality is detected. For example, when alarm output is intermittently performed at regular intervals, irregular intervals are In the case where the alarm is output intermittently at the time, the alarm is continuously stopped for a certain period after the alarm is continuously output for a certain time.

[II] Embodiments of the Invention Next, embodiments of the alarm device according to the invention will be described. However, the present invention is not limited to these examples.

  First, Example 1 will be described. The alarm device according to the first embodiment generally includes (1) an abnormality occurrence detection unit that detects occurrence of an abnormality, an alarm output unit that performs predetermined control for performing an alarm output, and the alarm by the alarm output unit. An alarm control means for performing predetermined control for causing output to be discontinuously performed, and (2) an alarm output means, when an abnormality is detected by the abnormality occurrence detection means, This is an interlocking signal output means for transmitting an interlocking signal for performing an interlocking alarm in the alarm device to the other alarm device, and the alarm control means intermittently performs control for alarm output by the alarm output means. The main feature is that it is intermittent transmission control means.

[Configuration of alarm system]
First, an outline and characteristics of an alarm system to which the alarm device according to the present embodiment is applied will be described. FIG. 1 is a system configuration diagram illustrating the overall configuration of the alarm system according to the present embodiment. As illustrated in FIG. 1, the alarm system according to the present embodiment is configured by connecting a fire gas leak alarm 1 and a plurality of fire alarms 2 by lead wires 3. Of these, the fire gas leak alarm 1 detects a fire and gas leak and gives an alarm, and is installed in a monitoring area where there is a possibility of fire occurrence or gas leak, for example, a kitchen in a general house. The fire alarm 2 detects the occurrence of a fire and gives an alarm, and is arranged in a monitoring area where there is a possibility of a fire, for example, a living area or a bedroom in a general house.

  In such an alarm system, for example, when the fire gas leak alarm 1 installed in the kitchen detects a fire, the alarm is performed by itself, and an interlock signal is sent to the fire alarm 2 in the living room or bedroom. The fire alarm device 2 in the living room or bedroom also gives an alarm. That is, in this case, the fire gas leak alarm 1 in the kitchen becomes the link source, and the fire alarm 2 in the living room or bedroom becomes the link destination. Here, the transmission form of the interlock signal is arbitrary, but in this embodiment, the lead wire 3 connecting the fire gas leak alarm 1 and the plurality of fire alarms 2 is short-circuited to form a closed loop. To do. Details of this point will be described later.

[Overall configuration and processing of fire gas leak alarm]
Next, the configuration of the fire gas leak alarm 1 according to the present embodiment will be described. As illustrated in FIG. 1, the fire gas leak alarm 1 includes a gas detection circuit 10, a smoke detection circuit 11, an indicator lamp circuit 12, a voltage output circuit 13, a sound alarm output circuit 14, a speaker 15, a fire interlocking signal. A transmission / reception circuit 16, an inspection circuit 17, an inspection switch 18, and a control unit 19 are provided. Among these, the gas detection circuit 10 is a gas detection means for detecting gas leakage in the monitoring region, measures methane and CO by a known method, and detects a voltage corresponding to the measured detected concentration of methane or CO. The signal is output to the control unit 19. The smoke detection circuit 11 measures the smoke concentration and outputs a voltage detection signal corresponding to the measured smoke concentration to the control unit 19. The method of measuring the smoke density by the smoke detection circuit 11 is arbitrary, but in this embodiment, the smoke density is based on the change in the amount of light received when the light emitted from the infrared LED (not shown) is scattered by the smoke. Measure. The indicator lamp circuit 12 is indicator lamp control means for controlling lighting or blinking of a not-shown indicator lamp (for example, LED). The voltage output circuit 13 is a voltage output means for outputting a voltage to a predetermined device (not shown) such as a microcomputer gas meter via the voltage output terminal 13a.

  The sound alarm output circuit 14 is a sound alarm output control means for controlling the output of the alarm sound, and starts or stops the sound of the alarm sound from the speaker 15. The fire interlocking signal transmission / reception circuit 16 is a fire interlocking signal transmission / reception control means for transmitting / receiving an interlocking signal to / from the fire alarm device 2 via the lead wire 3. The inspection circuit 17 is an operation means for receiving an inspection operation and other predetermined operations for the fire gas leak alarm 1 through the inspection switch 18. Here, the specific configuration of the inspection switch 18 is arbitrary, but in the present embodiment, the inspection switch 18 is configured as a ring suspended from a housing (not shown) of the fire gas leak alarm 1 via a string. An operation instruction can be input to the inspection circuit 17 by the user holding the ring with a finger or the like and pulling it down.

  The control unit 19 is a control unit that controls each unit of the fire gas leak alarm 1. The control unit 19 is functionally conceptually configured to include a detection processing unit 19a, an alarm processing unit 19b, an intermittent processing unit 19c, and a storage unit 19d. Among these, the detection processing unit 19a is detection processing means for determining the presence or absence of fire or gas leakage and performing predetermined control according to the determination result, and corresponds to the abnormality occurrence detection means in the claims. The alarm processing unit 19b is an alarm processing unit that performs predetermined control for performing various alarms when it is determined that a fire or a gas leak has occurred. Moreover, the intermittent process part 19c performs the transmission of the interlocking signal by the fire interlocking signal transmission / reception circuit 16 intermittently, and respond | corresponds to the alarm control means and intermittent transmission control means in a claim. The storage unit 19d is a storage unit that stores various kinds of information, and particularly stores a predetermined threshold value used for determining whether there is a fire or a gas leak in a nonvolatile manner. Although the specific form of the control part 19 comprised in this way is arbitrary, For example, it can comprise as a program which operate | moves on MPU (Micro Processor Unit) which has CPU and memory, and this MPU. The fire gas leak alarm 1 configured as described above is connected to a commercial power source via an outlet, and operates using the commercial power source as a power source.

  In the fire gas leak alarm 1 configured as described above, the fire and gas leak alarm is performed as follows. That is, when gas or smoke from the monitoring area enters a housing (not shown), a detection signal corresponding to the smoke concentration is output from the smoke detection circuit 11 to the control unit 19, or a detection signal corresponding to the gas concentration. Is output from the gas detection circuit 10 to the control unit 19. Then, the detection processing unit 19a of the control unit 19 compares the detection signal from the smoke detection circuit 11 or the gas detection circuit 10 with a predetermined threshold value stored in the storage unit 19d, and the smoke indicated by the detection signal. If the concentration or gas concentration is above the threshold (or if smoke detection, the received light level is below the threshold, etc.), it is determined that a fire or gas leak has occurred and this is indicated. The signal is output to the alarm processing unit 19b.

  Receiving this, the alarm processing unit 19b controls the indicator lamp circuit 12 to turn on an indicator lamp (not shown), and controls the voice alarm output circuit 14 to output an alarm sound from the speaker 15. In addition, when a gas leak occurs, the alarm processing unit 19b controls the voltage output circuit 13 to output a voltage output with a predetermined voltage from the voltage output terminal 13a. This voltage output is output to a predetermined device (not shown) such as a microcomputer gas meter adapter via the voltage output terminal 13a, and predetermined control such as automatic shut-off of the gas main plug is performed on the predetermined device side. Further, the alarm processing unit 19b causes the other alarm device 2 to output an interlocking signal via the intermittent processing unit 19c and the fire interlocking signal transmission / reception circuit 16. Details of this interlocking alarm will be described later.

[Overview of overall configuration and processing of fire alarms]
Next, the configuration of the fire alarm device 2 according to the present embodiment will be described. As illustrated in FIG. 1, the fire alarm 2 includes a smoke detection circuit 20, an indicator light circuit 21, a sound alarm output circuit 22, a speaker 23, a fire-linked signal transmission / reception circuit 24, an inspection circuit 25, an inspection switch 26, and The control unit 27 is provided. Among these, the functions of the smoke detection circuit 20, the indicator light circuit 21, the sound alarm output circuit 22, the speaker 23, the fire interlocking signal transmission / reception circuit 24, the inspection circuit 25, and the inspection switch 26 are the same as the fire gas leak alarm 1 described above. The smoke detection circuit 11, the indicator lamp circuit 12, the sound alarm output circuit 14, the speaker 15, the fire-linked signal transmission / reception circuit 16, the inspection circuit 17, and the inspection switch 18 have no function related to the gas leak alarm. Except for, each is substantially the same, and the description thereof is omitted.

  The control unit 27 includes a detection processing unit 27a, an alarm processing unit 27b, an intermittent processing unit 27c, and a storage unit 27d in terms of functional concept. The function of each of these parts is related to the function of the gas leak alarm with respect to the functions of the detection processing unit 19a, the alarm processing unit 19b, the intermittent processing unit 19c, and the storage unit 19d of the control unit 19 of the fire gas leak alarm 1 described above. Each of them is substantially the same except that there is no symbol, and the description thereof is omitted. Here, the fire alarm device 2 incorporates a battery 28 as a main power source, and each unit is operated using electric power supplied from the battery 28.

  In the fire alarm device 2 configured as described above, the fire alarm is performed as follows. That is, when smoke from the monitoring region enters a housing (not shown), a detection signal corresponding to the smoke concentration is output from the smoke detection circuit 20 to the control unit 27. Then, the detection processing unit 27a of the control unit 27 compares the detection signal from the smoke detection circuit 20 with a predetermined threshold value stored in the storage unit 27d, and the smoke density indicated by the detection signal exceeds the threshold value. If it is, it is determined that a fire has occurred, and a signal indicating that is output to the alarm processing unit 27b. Receiving this, the alarm processing unit 27b controls the indicator lamp circuit 21 to light a predetermined indicator lamp, and controls the voice alarm output circuit 22 to output an alarm sound from the speaker 23. Further, the alarm processing unit 27b causes the fire gas leakage alarm device 1 and other alarm devices 2 to output the interlocking signal via the intermittent processing unit 27c and the fire interlocking signal transmitting / receiving circuit 24.

[Configuration for linked alarms]
Next, a specific configuration for performing the interlocking alarm will be described in more detail. FIG. 2 is a circuit diagram illustrating the fire-linked signal transmission / reception circuits 16 and 24 of the fire gas leak alarm 1 and the fire alarm 2 according to the present embodiment. As shown in FIG. 2, the fire-linked signal transmission / reception circuit 16 of the fire gas leak alarm 1 includes a bias circuit 16a, an output circuit 16b, a detection circuit 16c, and rectifying diodes 16d and 16e. Yes.

  Among these, the bias circuit 16a is bias means for supplying the current supplied from the power source to the output circuit 16b with a predetermined voltage and a predetermined current. The output circuit 16b transmits an interlock signal when an abnormality is detected by the fire gas leak alarm 1, and corresponds to the alarm output means and the interlock signal output means in the claims. The transmission method of this interlocking signal is arbitrary, but in this embodiment, the output circuit 16b forms a closed loop by the lead wire 3 by closing (short-circuiting) the internal contact of the output circuit 16b. An interlock signal is transmitted by passing a current through the alarm device 2. Although the specific method of this short circuit is also arbitrary, for example, the collector terminal and the emitter terminal of the transistor inside the output circuit 16b are connected to the loop by the lead wire 3, and the short circuit is applied by applying a voltage to the base terminal. Do. Here, since the voltage application to the base terminal is intermittently performed by the intermittent processing unit 19c, a closed loop by the lead wire 3 is intermittently formed. Moreover, the detection circuit 16c is an interlocking signal detection means which detects the interlocking signal transmitted from the other alarm device 2, and outputs the fact to the control part 19 of FIG. 1 when it detects. Based on the interlocking signal output in this way, the fire gas leak alarm device 1 performs an interlocking alarm.

  As shown in FIG. 2, the fire interlocking signal transmission / reception circuit 24 of the fire alarm device 2 includes a bias circuit 24a, an output circuit 24b, a detection circuit 24c, and rectifying diodes 24d and 24e. . The functions of these parts are substantially the same as those of the bias circuit 16a, the output circuit 16b, the detection circuit 16c, and the rectifying diodes 16d and 16e of the fire-linked signal transmission / reception circuit 16 of the fire gas leak alarm 1, respectively. Description is omitted.

[Processing for discontinuous interlocking alarms]
The interlock alarm process performed through the fire interlock signal transmitting / receiving circuits 16 and 24 configured in this manner will be described below. Here, the case where the fire gas leak alarm 1 is the linkage source and the fire alarm 2 is the linkage destination will be described (note that the fire alarm 2 is the linkage source and the fire gas leak alarm 1 is the linkage destination. In this case, the same processing is performed, so that the description of this processing is omitted).

  First, in FIG. 1, when a fire or gas leak is detected by the fire gas leak alarm 1, the alarm processing unit 19b of the control unit 19 is a predetermined for causing the intermittent processing unit 19c to start an interlocking alarm. The control signal is output. The intermittent processing unit 19c that has received this control signal causes the other alarm device 2 to intermittently output the interlocking signal via the fire interlocking signal transmitting / receiving circuit 16. Specifically, in FIG. 2, the intermittent processing unit 19c intermittently shorts the closed loop constituted by the lead wires 3 by intermittently applying a voltage to the transistors of the output circuit 16b at predetermined intervals.

  The interlocking signal transmitted intermittently in this way is received by the detection circuit 24c of the fire interlocking signal transmitting / receiving circuit 24 of each alarm device 2 via the lead wire 3. The detection circuit 24c outputs a control signal indicating that the interlock signal has been received to the alarm processing unit 27b of the control unit 27 in FIG. 1, and the alarm processing unit 27b outputs a control signal to the voice alarm output circuit 14. An alarm sound is output from the speaker 15. For example, an alarm message such as “Woo Woo, Fire, Fire, Woo” is output from the speaker 15. Further, the alarm processing unit 27b outputs a control signal to the indicator lamp circuit 12 to cause the LED (not shown) to blink.

  Here, when the closed loop is simply short-circuited continuously, a large short-circuit current flows out from the battery 28 that is the power source of the alarm device 2 to the closed loop, resulting in an increase in power consumption. On the other hand, in this embodiment, as described above, the closed loop is intermittently short-circuited, so that the short-circuit current flows out of the battery 28 intermittently, and the power consumption of the battery 28 is correspondingly increased. Can be reduced. In this embodiment, the interlocking destination performs the interlocking alarm by determining that the interlocking signal is transmitted only when the interlocking signal is received a predetermined number of times (predetermined number of pulses) or more. In this case, it is more preferable in that the reliability of the interlocking alarm can be improved.

[Effects of Example 1]
As described above, according to the first embodiment, the interlock signal is intermittently output from the interlock source to the interlock destination, and the alarm output at the interlock destination can be intermittently performed. Power consumption can be reduced. In particular, in the alarm device 2 using the battery 28 as a power source, the life of the battery 28 can be substantially extended, and abnormality monitoring can be performed over a long period of time.

  Next, an alarm device according to the second embodiment will be described. The alarm device according to the second embodiment generally includes (1) an abnormality occurrence detection unit that detects occurrence of an abnormality, an alarm output unit that performs predetermined control for performing an alarm output, and an alarm output by the alarm output unit. Alarm control means for performing predetermined control for causing the control for non-continuous, and (2) presence or absence of reception of an interlocking signal from another alarm device. The main feature is that the occurrence of abnormality is detected by determining the above, and the alarm control means is an intermittent detection control means for intermittently determining whether or not the interlocking signal is received by the interlocking signal detecting means. The structure and method that are not particularly described are the same as those in the first embodiment described above, and the same components are described with the same reference numerals.

[Configuration of fire gas leak alarm and fire alarm]
First, the configurations of the fire gas leak alarm 30 and the fire alarm 40 of the alarm system according to the present embodiment will be described. FIG. 3 is a system configuration diagram illustrating the overall configuration of the alarm system according to the present embodiment. As illustrated in FIG. 3, the fire gas leakage alarm device 30 according to the present embodiment includes a fire-linked signal transmission / reception circuit 31 and a control unit 32 that are different from those of the first embodiment. Among these, the fire interlocking signal transmission / reception circuit 31 is a fire interlocking signal transmission / reception control means for transmitting / receiving an interlocking signal to / from the fire alarm device 40 via the lead wire 3. Moreover, the control part 32 is a control means which controls each part of the fire gas leak alarm 30, and is provided with the detection process part 32a, the alarm process part 32b, and the memory | storage part 32c on the functional concept. . The detection processing unit 32a, the alarm processing unit 32b, and the storage unit 32c are respectively abbreviated as the detection processing unit 19a, the alarm processing unit 19b, and the storage unit 19d of the first embodiment, unless otherwise specified. Performs similar functions.

  The fire alarm device 40 includes a fire interlocking signal transmission / reception circuit 41 and a control unit 42 different from those in the first embodiment. Among these, the fire interlocking signal transmission / reception circuit 41 is a fire interlocking signal transmission / reception control means for transmitting / receiving an interlocking signal via the lead wire 3 between the fire gas leak alarm 30 and the other fire alarm 40. Moreover, the control part 42 is a control means which controls each part of the fire alarm 40, and is provided with the detection process part 42a, the alarm process part 42b, and the memory | storage part 42c on the functional concept. The detection processing unit 42a, the alarm processing unit 42b, and the storage unit 42c are substantially the same as the detection processing unit 27a, the alarm processing unit 27b, and the storage unit 27d of the first embodiment, respectively, unless otherwise specified. Performs similar functions.

[Configuration of fire-linked signal transmission / reception circuit]
Next, the structure of the fire interlocking signal transmission / reception circuits 31 and 41 for performing the interlocking alarm will be described in more detail. FIG. 4 is a circuit diagram illustrating the fire-linked signal transmission / reception circuits 31 and 41 of the fire gas leak alarm 30 and the fire alarm 40 according to the present embodiment. As shown in FIG. 4, the fire-linked signal transmission / reception circuit 31 of the fire gas leak alarm 30 has a bias circuit 16a, an output circuit 16b, a detection circuit 16c, and a rectifying circuit substantially the same as in the first embodiment. Diodes 16e and 16f are provided, and voltage application to the transistor of the output circuit 16b is continuously performed by the alarm processing unit 32b, not the intermittent processing unit 19c as in the first embodiment.

  On the other hand, the fire interlocking signal transmission / reception circuit 41 of the fire alarm 40 includes an intermittent processing unit 41a and a switching circuit 41b in addition to the bias circuit 24a, the output circuit 24b, the detection circuit 24c, and the rectifying diodes 24d and 24e. Configured. Here, the output circuit 24b detects the occurrence of abnormality by determining whether or not the interlock signal is received from another alarm device, and the abnormality occurrence detection means and the interlock signal detection means in the claims. Corresponding to. The voltage application to the transistor of the output circuit 24b is continuously performed not by the intermittent processing unit 27c as in the first embodiment but by the alarm processing unit 42b. The intermittent processing unit 41a is configured to intermittently receive the interlocking signal by the fire interlocking signal transmitting / receiving circuit 41, and corresponds to the alarm control means and the intermittent transmission control means in the claims. The switching circuit 41b is switching means for intermittently supplying power from the battery 28 (Vcc in FIG. 4) as a power source to the bias circuit 24a.

[Processing for discontinuous interlocking alarms]
The interlock alarm processing performed through the fire interlocking signal transmission / reception circuits 31 and 41 configured as described above will be described below. Here, the case where the fire gas leak alarm 30 is the interlocking source and the fire alarm 40 is the interlocking destination will be described.

  First, in FIG. 3, when a fire or gas leak is detected by the fire gas leak alarm 30, the alarm processing unit 32 b of the control unit 32 sends an interlock signal to another alarm via the fire interlock signal transmission / reception circuit 31. Output to the device 40. Specifically, in FIG. 4, by continuously applying a voltage from the alarm processing unit 32b to the transistor of the output circuit 16b of the fire-linked signal transmission / reception circuit 31, a closed loop constituted by the lead wire 3 is continuously formed. Short circuit.

  As shown in FIG. 4, the interlock signal continuously transmitted in this way is received by the detection circuit 24 c of the fire interlock signal transmitting / receiving circuit 41 of each alarm device 40 via the lead wire 3. The detection circuit 24c outputs a control signal indicating that the interlock signal has been received to the alarm processing unit 42b of the control unit 42 in FIG. 3, and the alarm processing unit 42b outputs a control signal to the voice alarm output circuit 22. An alarm sound is output from the speaker 23. Further, the alarm processing unit 42b outputs a control signal to the indicator lamp circuit 21 to cause the LED (not shown) to blink. Further, the detection circuit 24c in FIG. 4 outputs a control signal indicating that the interlock signal has been received to the intermittent processing unit 41a. Receiving this output, the intermittent processing unit 41a intermittently drives the switching circuit 41b at a predetermined interval. For this reason, the power of the battery 28 as a power source is intermittently supplied to the bias circuit 24a, and the current supplied to the closed loop is intermittently interrupted.

  Here, if power is simply supplied continuously to the closed loop, a large short-circuit current continuously flows from the battery 28 to the closed loop, resulting in an increase in power consumption. In contrast, in the present embodiment, as described above, since power is intermittently supplied to the closed loop, the short circuit current is also intermittently discharged from the battery 28, and the power consumption of the battery is accordingly increased. Can be reduced. In this embodiment, the interlocking destination performs the interlocking alarm by determining that the interlocking signal is transmitted only when the interlocking signal is received a predetermined number of times (predetermined number of pulses) or more. In this case, it is preferable in that the reliability of the interlocking alarm can be improved. In addition to the above configuration, the interlock signal may be intermittently output at the interlock destination as in the first embodiment. However, in order to reliably detect the interlock signal at the interlock destination, the intermittent processing unit 41a. It is preferable that the intermittent cycle of the bias circuit 24a performed by the above is equal to or longer than the output cycle of the interlocking signal.

[Effects of Example 2]
As described above, according to the second embodiment, even when the interlock signal is continuously output from the interlock source to the interlock destination, the alarm output at the interlock destination can be intermittently performed. The power consumption for alarm in can be reduced. In particular, in the alarm device 40 using the battery 28 as a power source, the life of the battery 28 can be substantially extended, and abnormality monitoring can be performed over a long period of time.

  Next, an alarm device according to Example 3 will be described. The alarm device according to the third embodiment generally includes (1) an abnormality occurrence detection unit that detects occurrence of an abnormality, an alarm output unit that performs predetermined control for performing an alarm output, and an alarm output by the alarm output unit. Alarm control means for performing predetermined control for causing non-continuous control, (2) the abnormality occurrence detection means includes a detection level by the predetermined detection means, a first threshold value or It is a detection level determination means for detecting the occurrence of an abnormality by comparing with the second threshold value, and the alarm control means performs a predetermined operation when it is determined that the detection level exceeds the first threshold value. The threshold value change control means for changing the comparison target by the detection level determination means from the first threshold value to the second threshold value; and (3) the threshold value change control means includes the first threshold value to the second threshold value. After changing to the detection level When it is determined that less than the first threshold value, under predetermined conditions, thereby returning the comparison target by the detection level determining means from the second threshold to the first threshold value, and the like as main features. The structure and method that are not particularly described are the same as those in the first embodiment described above, and the same components are described with the same reference numerals.

[Configuration of fire gas leak alarm and fire alarm]
First, the configuration of the fire gas leak alarm 50 and the fire alarm 60 of the alarm system according to the present embodiment will be described. FIG. 5 is a system configuration diagram illustrating the overall configuration of the alarm system according to the present embodiment. As illustrated in FIG. 5, the fire gas leak alarm device 50 according to the present embodiment includes a control unit 51 that is different from the first embodiment. The control unit 51 is functionally conceptually configured to include a detection processing unit 51a, an alarm processing unit 51b, a threshold processing unit 51c, and a storage unit 51d.

  Here, the detection processing unit 51a detects the occurrence of an abnormality by comparing the detection level of the gas detection circuit 10 or the smoke detection circuit 11 with the first threshold value or the second threshold value. Corresponds to the abnormality occurrence detection means and the detection level determination means in the range. The alarm processing unit 51b is an alarm processing unit that performs predetermined control for performing various alarms when it is determined that a fire or a gas leak has occurred. In addition, when it is determined that the detection level by the detection processing unit 51a has exceeded a predetermined first threshold value and the predetermined operation is performed, the threshold processing unit 51c sets the comparison target by the detection processing unit 51a to a predetermined first level. The threshold value is changed from a threshold value of 1 to a predetermined second threshold value, and corresponds to the alarm control means and the threshold value change control means in the claims. In addition, the threshold processing unit 51c detects under a predetermined condition when the detection processing unit 51a determines that the detection level is lower than the first threshold after changing from the first threshold to the second threshold. The comparison target by the processing unit 51a is returned from the second threshold value to the first threshold value.

  The storage unit 51d is a storage unit that stores various types of information, and particularly stores a predetermined first threshold value and a second threshold value that are used for determining whether there is a fire or a gas leak in a nonvolatile manner. These second threshold values are values indicating a detection level higher than the first threshold value. For example, in the case where fire detection is performed based on a change in the amount of received light due to the light emitted from the LED being scattered by smoke. When the received light amount (that is, smoke density) is directly compared with the threshold value, the first threshold value is set to the second threshold value.

  Moreover, the fire alarm device 60 according to the present embodiment includes a control unit 61 different from that of the first embodiment. The control unit 61 includes a detection processing unit 61a, an alarm processing unit 61b, a threshold processing unit 61c, and a storage unit 61d in terms of functional concept. The functions of these units are not related to the functions of the gas leak alarm, compared to the functions of the detection processing unit 51a, the alarm processing unit 51b, the threshold processing unit 51c, and the storage unit 51d of the control unit 51 of the fire gas leak alarm 50. It is substantially the same except for the point, and the description thereof is omitted.

[Inspection process]
The inspection process in the fire gas leak alarm 50 and the fire alarm 60 configured as described above will be described below. Here, the inspection process in the fire gas leak alarm 50 will be described (note that the inspection process in the fire alarm 60 is the same, so the description of the inspection process by the fire alarm 60 is omitted). FIG. 6 is a timing chart of alarm processing according to the present embodiment. The smoke density change detected by the smoke detection circuit 11, the emission timing of the infrared LED for detecting the smoke density in the smoke detection circuit 11, and the indicator lamp The lighting timing of the alarm LED controlled by the circuit 12, the output timing of the alarm sound from the speaker 15 controlled by the voice alarm output circuit 14, and the operation timing of the inspection switch 18 are shown in association with each other. .

  First, in FIG. 5, when the operator pulls down the inspection switch 18 of the fire gas leak alarm 50 for a predetermined time, the inspection circuit 17 outputs an inspection signal for starting the inspection to the alarm processing unit 51b. Upon receiving this inspection signal, the alarm processing unit 51b controls the indicator lamp circuit 12 to turn on a not-shown indicator lamp, and controls the voice alarm output circuit 14 to output an alarm sound from the speaker 15 (FIG. 6). Time t1). Further, the alarm processing unit 51b in FIG. 5 causes the other alarm device 60 to output the interlocking signal via the fire interlocking signal transmitting / receiving circuit 16. Thereafter, when a predetermined time elapses, the alarm processing unit 51b turns off the display by an unillustrated indicator lamp, stops the output of the alarm sound by the speaker 15, and further outputs the interlock signal by the fire interlock signal transmitting / receiving circuit 16. Stop. Thus, it can be easily confirmed whether or not the alarm output is appropriately performed.

[Discontinuous alarm processing]
Next, alarm processing when a fire or a gas leak is actually detected will be described below. Here, a case where a fire is detected in the fire gas leak alarm 50 that is the interlocking source will be described (note that the same processing is performed even when the fire alarm 60 is the interlocking source, so the description of this processing) Is omitted). FIG. 7 is a flowchart of the alarm process according to the present embodiment.

  First, in FIG. 5, when smoke from the monitoring area enters a housing (not shown) of the fire gas leak alarm 50, a detection signal corresponding to the smoke concentration is output from the smoke detection circuit 11 to the control unit 51. Then, the detection processing unit 51a of the control unit 51 compares the detection signal from the smoke detection circuit 11 with the first threshold value stored in the storage unit 51d (step S1 in FIG. 7), and indicates the detection signal. If the smoke concentration exceeds the first threshold (time t2 in FIG. 6, step S1, FIG. 7 Yes), and this state continues for 2 counts or more (FIG. 6) Time t3, where 1 count corresponds to one emission interval of the infrared LED), and determines that a fire has occurred, and outputs a signal indicating that to the alarm processing unit 51b in FIG. . Receiving this, the alarm processing unit 51b performs indicator lamp lighting, alarm sound output, and interlocking signal output in the same manner as in the interlocking process of the first embodiment (step S2 in FIG. 7).

  After the alarm process is performed in this way, when the smoke concentration falls below the first threshold, the detection processing unit 51a stops signal output to the alarm processing unit 51b. Receiving this, the alarm processing unit 51b determines that the fire did not actually occur or the fire was extinguished, and turned off the indicator light, stopped the alarm sound output, and stopped the interlock signal output, The alarm state is canceled and the normal monitoring state is restored (time t4 in FIG. 6, steps S3 and S4 in FIG. 7).

  Here, it is assumed that the smoke density again exceeds the first threshold value and continues for 2 counts or more (time t5, t6 in FIG. 6). In this case, an alarm is output (step S2 in FIG. 7), and during this alarm output, if the user lowers the inspection switch 18 for a predetermined time (time t7 in FIG. 6, step S5 in FIG. 7, Yes), FIG. The inspection circuit 17 of No. 5 outputs a control signal for temporarily stopping the alarm to the alarm processing unit 51b. Receiving this, the alarm processing unit 51b turns off the indicator lamp, stops the alarm sound output, and stops the interlocking signal output for a predetermined time (for example, 5 minutes) (also at time t7 in FIG. 6 and in FIG. 7). Step S6).

  Further, when the inspection switch 18 is pulled down for a predetermined time during the alarm as described above (time t7 in FIG. 6, step S5 in FIG. 7, Yes), the inspection circuit 17 in FIG. To 51c. Receiving this, the threshold processing unit 51c changes the threshold value to be compared in the detection processing unit 51a from the first threshold value to the second threshold value (also at time t7 in FIG. 6 and step S7 in FIG. 7). Although the specific method of this change is arbitrary, for example, the storage position of the storage unit 51d referred to by the detection processing unit 51a is changed, or the first threshold value and the second threshold value in the storage unit 51d are replaced with each other. This can be achieved.

  The effect of changing the threshold in this way is as follows. That is, while the alarm output is stopped based on the operation of the inspection switch 18, if the smoke density falls below the first first threshold value, the alarm state is canceled as in the case of time t4 in FIG. To return to the normal monitoring state. However, when the smoke density once again exceeds the first threshold after returning in this way, an alarm is again issued in the same manner as at times t5 and t6 in FIG. In other words, when the smoke concentration is unstablely changing near the first threshold, even if the inspection switch 18 is operated to temporarily stop the alarm, the return and the alarm are repeated and the alarm output is substantially reduced. May not be able to pause temporarily. In such a case, power consumption is increased by repeatedly performing the alarm, and it is very troublesome for a user who has determined that the alarm is not a fire and stopped the fire alarm. On the other hand, when the first threshold is changed to the second threshold as described above, the alarm state does not occur unless the smoke density exceeds the second threshold. For this reason, the alarm can be temporarily stopped more reliably by operating the inspection switch 18, power consumption for the alarm can be suppressed, and the troublesomeness for the user is eliminated. In addition, when the smoke concentration increases due to a fire and the smoke concentration exceeds the second threshold value, an alarm state can be set even during a temporary stop, so that safety is not excessively impaired.

  After that, the detection processing unit 51a of the control unit 51 in FIG. 5 compares the detection signal from the smoke detection circuit 11 with the second threshold value previously changed (step S8 in FIG. 7), and the detection signal If the indicated smoke density exceeds the second threshold (step S8 in FIG. 7, Yes) and this state continues for 2 counts or more, it is determined that a fire has occurred. Then, a signal indicating that is output to the alarm processing unit 51b. As a result, even if the alarm is temporarily stopped, the alarm state is entered again (step S2 in FIG. 7; in FIG. 6, after the alarm state is reached at time t11, the state at time t14).

  On the other hand, when it is determined in step S8 that the smoke density indicated by the detection signal does not exceed the second threshold (step S8 in FIG. 7), the detection processing unit 51a of the control unit 51 outputs the detection signal. It is monitored whether or not the smoke density indicated below falls below the first threshold value before the change (step S9 in FIG. 7). If it is determined that the value is not lower than the first threshold value, it is determined whether or not a predetermined time (for example, the above-mentioned 5 minutes) has elapsed since the start of the temporary stop by the operation of the inspection switch 18 (step S11 in FIG. 7). ) When it has elapsed, the normal monitoring state is restored. Specifically, the second threshold value is returned to the first threshold value (step S12 in FIG. 7), and this process is temporarily ended, and the monitoring state is returned to step S1. In this case, when the smoke density is still higher than the first threshold value, the alarm state is entered again (step S2 in FIG. 7).

  Here, in step S9, it is determined that the smoke density has fallen below the first threshold value before the change in the alarm suspension state (time t8 in FIG. 6, step S9 in FIG. 7, Yes), and a predetermined condition is satisfied. When satisfied (for example, when this state continues for a predetermined time or longer (for example, 1 minute or longer)) (time t9 in FIG. 6, step S10 in FIG. 7, Yes), the alarm suspension period ends. Return to the normal monitoring state without waiting. Specifically, the second threshold value is returned to the first threshold value (step S12 in FIG. 7), and this process is temporarily ended, and the monitoring state is returned to step S1.

  As described above, when the smoke density falls below the first threshold value before the change, the normal monitoring state is restored without waiting for the end of the alarm suspension period for the following reason. That is, when the smoke concentration falls below the first threshold and a certain period of time has passed while the alarm is paused, there is a high possibility that there was no fire or the fire was completely extinguished. There is no point in continuing. In addition, even if there is a high possibility that there was no fire, if the monitoring is continued at the second threshold, even if a new fire occurs, an alarm output is output until the detection level exceeds the second threshold. Since it is not performed, there may be a problem that the alarm output is delayed. Therefore, in this case, a new fire can be quickly detected by quickly returning to the normal state.

[Effects of Example 3]
Thus, according to the third embodiment, when the inspection switch 18 is operated during alarm output, the alarm is temporarily stopped and the first threshold value is changed to the second threshold value, so that the alarm is issued. It is possible to pause more reliably, reduce power consumption for warning, and eliminate troublesomeness for the user. In addition, when the smoke concentration falls below the first threshold during alarm output, a new fire can be quickly detected by quickly returning to the normal monitoring state.

  Next, an alarm device according to Embodiment 4 will be described. The alarm device according to the fourth embodiment generally includes (1) an abnormality occurrence detection unit that detects occurrence of an abnormality, an alarm output unit that performs predetermined control for performing an alarm output, and an alarm output by the alarm output unit. Alarm control means for performing predetermined control for causing the control for non-continuous, and (2) the alarm control means when the abnormality is detected by the abnormality occurrence detection means The alarm stop control means for temporarily stopping the alarm output by the alarm output means at a stop interval based on the remaining capacity of the battery as the power source of the alarm device when a predetermined operation is performed, Etc. are the main features. Note that the structure and method that are not particularly described are the same as those in the third embodiment described above, and the same components will be described with the same reference numerals.

[Configuration of fire gas leak alarm and fire alarm]
First, the configurations of the fire gas leak alarm 50 and the fire alarm 70 of the alarm system according to the present embodiment will be described. FIG. 8 is a system configuration diagram illustrating the overall configuration of the alarm system according to the present embodiment. Here, since the fire gas leak alarm 50 is configured in the same manner as in the third embodiment, the description thereof is omitted. On the other hand, the fire alarm device 70 according to the present embodiment includes a control unit 71 that is different from the fire alarm device 60 of the third embodiment. The control unit 71 is functionally conceptually configured to include a detection processing unit 71a, an alarm processing unit 71b, a threshold processing unit 71c, a remaining amount processing unit 71d , and a storage unit 71e . Here, the detection processing unit 71a, the alarm processing unit 71b, the threshold processing unit 71c, and the storage unit 71e are respectively the detection processing unit 61a, the alarm processing unit 61b, the threshold processing unit 61c, and the storage unit of the third embodiment. It has substantially the same function as 61d. The remaining amount processing unit 71d temporarily stops the alarm output at a stop interval based on the remaining capacity of the battery 28, and corresponds to the alarm control unit and the alarm stop control unit in the claims. To do.

[Discontinuous alarm processing]
Next, alarm processing when a fire is actually detected will be described below. Here, a case where a fire is detected in the fire alarm device 70 which is the interlocking source will be described. FIG. 9 is a flowchart of the alarm process according to the present embodiment. In FIG. 9, steps S1 to S12 are the same as steps S1 to S12 of FIG.

  Here, in Example 3, when an alarm suspension is instructed after the alarm is output, as shown in FIG. 7, it is monitored whether or not a predetermined suspension time (for example, 5 minutes) has passed ( Step S11 in FIG. 7) When the temporary stop time has elapsed, the normal monitoring state has been restored (step S12 in FIG. 7). On the other hand, in the present embodiment, the remaining amount processing unit 71d in FIG. 8 detects the remaining amount of the battery before the determination of whether or not the suspension period has elapsed, and the remaining amount is equal to or greater than a predetermined threshold value. If there is, it is determined that the battery capacity is still sufficient (step S13 in FIG. 9, Yes), and the process proceeds to step S11 for monitoring the passage of the first pause time (for example, 5 minutes).

  On the other hand, when the remaining amount is below a predetermined threshold, it is determined that the battery capacity has run out (No in step S13), and a second pause period (for example, 10) longer than the first pause period. The progress of minutes is monitored (step S14). That is, the power consumption due to the alarm is reduced by extending the period during which the alarm output is temporarily stopped and extending the period until the alarm is output again. Even when the alarm pause time is increased in this way, the alarm has already been output once in step S2, so that the user is informed that a fire has been detected, and there is an inadvertent danger. There is no increase.

[Effects of Example 4]
As described above, according to the fourth embodiment, when the remaining amount of the battery 28 is reduced, the alarm power consumption can be further reduced by extending the alarm suspension period.

[III] Modifications to the Embodiments Each embodiment of the present invention has been described above, but the specific configuration and method of the present invention are within the scope of the technical idea of each invention described in the claims. Modifications and improvements can be made arbitrarily. Hereinafter, such a modification will be described.

[Alarm]
The alarm device to which the present invention can be applied is not limited to those shown in the above embodiments, and can be similarly applied to an alarm device that detects only gas. Moreover, it is good also as a structure which can connect an alarm device also to an intercom or a housing information panel.

[About interlocking mode]
Further, in each of the above embodiments, the fire gas leak alarms 1, 30, 50 and the plurality of fire alarms 2, 40, 60, 70 are connected to each other by the lead wire 3, but the lead Communication may be performed wirelessly without using the line 3. In this case, a unique address is assigned to the fire gas leak alarm 1, 30, 50 and the plurality of fire alarms 2, 40, 60, 70, and this address is set using a dip switch, EEPROM, IC tag or the like. Can be possible.

  Moreover, in the said Example 3, 4, although the alarm system comprised by making the fire gas leak alarm device 50 and the some alarm devices 60 and 70 interlock | cooperate with each other was demonstrated as an example, a threshold value is changed from a 1st threshold value. Regarding the point of changing to the second threshold and the point of changing the alarm pause interval according to the remaining battery level, the fire gas leak alarm device 50 and the plurality of alarm devices 60 and 70 are in a single form (stand alone). The same applies to the case where it is provided. In the third embodiment, when a fire is detected in the fire gas leak alarm 50 and an alarm is output, the fire gas leak alarm is activated when the inspection switch 18 of the fire gas leak alarm 50 is operated. In the above description, the threshold value of the fire alarm device 50 is changed from the first threshold value to the second threshold value. However, when a fire is detected in the fire gas leak alarm device 50, the inspection switch 18 of another fire alarm device 60 is operated. By doing so, the threshold value of the fire gas leak alarm 50 and / or the fire alarm 60 may be changed in conjunction. The specific interlocking method in this case is arbitrary, but for example, in the interlocking configuration using the unique address described above, it can be performed by transmitting a predetermined command for changing the threshold value together with the address.

[About intermittent transmission and reception of interlocking signals]
In the first and second embodiments, the example in which the interlocking signal is intermittently transmitted or received has been described. However, the specific configuration of the interlocking signal intermittent may take various forms. For example, in the third embodiment, the intermittent processing units 19 c and 27 c may be provided inside the fire interlocking signal transmission / reception circuits 16 and 24 instead of the control units 19 and 27. In the fourth embodiment, the switching circuit 41b may be interposed between the output circuit 24b and the detection circuit 24c. As for the intermittent interval of the interlocking signal, the remaining amount of the battery 28 may be detected, and the intermittent interval may be increased as the remaining amount decreases. Interlocked alarms can be performed at regular intervals.

[Operating means]
In addition to the inspection switch 18, any means can be used as the operation means for temporarily stopping the alarm output and changing the threshold value. For example, a dedicated operation switch may be provided that is separated from the inspection function and only performs a temporary stop of alarm output. In addition, as a form of operation means, the fire gas leak alarm 1, 30, 50 and the fire alarm 2, 40, 60, 70 are provided directly, as well as the fire gas leak alarm 1, 30, 50 and fire. You may comprise as a remote control which performs infrared communication between the alarm devices 2, 40, 60, and 70.

[About threshold]
In the third embodiment, the threshold is changed from the first threshold to the second threshold. However, when a predetermined operation is further performed, the second threshold is changed to the third threshold, etc. 3 You may change the threshold value more than a step. Alternatively, the remaining amount processing unit 71d of the fourth embodiment is provided in the fire gas leak alarm 50 or the fire alarm device 60 of the third embodiment, and the threshold value is changed based on the remaining battery level detected by the remaining amount processing unit 71d. The presence or absence may be determined. In addition, when the remaining amount of the battery 28 is detected by the remaining amount processing unit 71d as in the fourth embodiment, when the remaining amount falls below a predetermined amount, a remaining amount alarm is output by voice or display. Early battery replacement may be encouraged. Alternatively, when the remaining amount becomes a predetermined amount or less, in order to reduce the power consumption in the gas detection circuit 10 or the smoke detection circuit 11, the output interval from the detection element is extended, or the light emission of the LED that detects the smoke concentration. The interval may be extended.

[Problems to be solved and effects of the invention]
In addition, the problems to be solved by the present invention and the effects of the invention are not limited to the above contents, and the present invention solves problems not described above or effects not described above. In some cases, only a part of the described problems can be solved, or only a part of the described effects can be achieved. For example, even when the alarmable period of the battery-powered alarm device cannot actually be extended, the problem of the present invention is solved as long as the power consumption required for the alarm can be reduced.

[About control]
Further, all or any part of the control described as being automatically performed in each of the above embodiments may be performed manually, and conversely, all or any of the control described as being performed manually is performed. The part may be automated based on a known technique or the idea described above. In addition, each control unit and each processing block of each control unit shown in each embodiment can actually be configured as a CPU and a computer program read and executed by the CPU, or a hard-wired Can be configured with logic. Each electrical component described above is functionally conceptual, and does not necessarily need to be physically configured as illustrated, and the specific form of distribution / integration of each unit is arbitrary. In addition, the processing procedure and the control procedure shown in the document and the drawings can be arbitrarily changed unless otherwise specified.

  As described above, the alarm device according to the present invention is useful for reducing power consumption in the alarm device, and is suitable for monitoring an abnormality over a long period even when the battery is driven.

1 is a system configuration diagram illustrating an overall configuration of an alarm system according to Embodiment 1. FIG. It is a circuit diagram which illustrates the fire interlocking signal transmission / reception circuit of a fire gas leak alarm device and a fire alarm device according to the first embodiment. FIG. 3 is a system configuration diagram illustrating an overall configuration of an alarm system according to a second embodiment. 6 is a circuit diagram illustrating a fire gas leak alarm device and a fire interlocking signal transmission / reception circuit of the fire alarm device according to Embodiment 2. FIG. FIG. 9 is a system configuration diagram illustrating an overall configuration of an alarm system according to a third embodiment. 10 is a timing chart of alarm processing according to Embodiment 3. 10 is a flowchart of alarm processing according to Embodiment 3; It is a system block diagram which shows the whole structure of the alarm system which concerns on Example 4. FIG. 10 is a flowchart of alarm processing according to Embodiment 4.

Explanation of symbols

1, 30, 50 Fire gas leak alarm device 2, 40, 60, 70 Fire alarm device 3 Lead wire 10 Gas detection circuit 11, 20 Smoke detection circuit 12, 21 Indicator lamp circuit 13 Voltage output circuit 14, 22 Audio alarm output Circuit 15, 23 Speaker 16, 24, 31, 41 Fire interlocking signal transmission / reception circuit 16a, 24a Bias circuit 16b, 24b Output circuit 16c, 24c Detection circuit 16d, 16e, 24d, 24e Diode 17, 25 Inspection circuit 18, 26 Inspection switch 19, 27, 32, 42, 51, 61, 71 Control unit 19a, 27a, 32a, 42a, 51a, 61a, 71a Detection processing unit 19b, 27b, 32b, 42b, 51b, 61b, 71b Alarm processing unit 19c, 27c , 41a, 71c Intermittent processing section 19d, 27d, 32c, 42c, 51d, 6 1d, 71e Storage unit 41b Switching circuit 51c, 61c, 71c Threshold processing unit 71d Remaining amount processing unit

Claims (3)

An alarm device that detects an abnormality in a monitoring area and gives an alarm,
An abnormality occurrence detecting means for detecting the occurrence of the abnormality;
When an abnormality is detected by the abnormality occurrence detection unit, an alarm output unit that performs predetermined control for performing an alarm output; and
Control for alarm output by the alarm output means, alarm control means for performing a predetermined control for performing discontinuously,
The abnormality occurrence detection means is an interlocking signal detection means for detecting the occurrence of the abnormality by determining whether or not the interlocking signal is received from another alarm device,
The alarm control means is intermittent detection control means for intermittently determining whether or not the interlocking signal is received by the interlocking signal detecting means ,
Increasing the interval of intermittent determination of the presence or absence of reception of the interlocking signal that the intermittent detection control means causes the interlocking signal detection means to perform as the remaining capacity of the battery as the power source of the alarm device decreases,
Alarm according to claim. In the case where the interlock signal from the other alarm device is intermittently transmitted, the alarm only when the interlock signal detection means determines that the interlock signal from the other alarm device has been received a predetermined number of times or more. Alarm output by output means,
The alarm device according to claim 1. When the interlocking signal from the other alarm device is intermittently transmitted, the intermittent detection control unit causes the interlocking signal detection unit to intermittently determine whether or not the interlocking signal is received, More than the intermittent transmission cycle of interlocking signals from other alarm devices,
The alarm device according to claim 1 or 2.

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