JP2010079876A - Alarm - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To secure an available period in which a fire alarming operation normally operates as long as possible even though a battery capacity reduction alarm is output. <P>SOLUTION: The alarm 10 operates by a battery power supply 36, receives a fire detection signal from a sensor part 26 and outputs a fire alarm from a notifying part 28. A battery testing part 50 periodically performs a battery load test which supplies a load current same as that in an abnormal alarm period to the battery power supply 36 to detect a battery voltage. A battery capacity monitoring part 52 determines battery capacity reduction when the battery voltage detected by the battery load test drops to a predetermined threshold or below, intermittently outputs a battery capacity reduction alarm from the notifying part 28, and stops subsequent periodical battery load tests. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

The present invention relates to an alarm device that is installed in a general house or the like and monitors and alarms a fire by battery drive.

  2. Description of the Related Art Conventionally, residential alarm devices (hereinafter referred to as “residential alarm devices”) that detect and warn of abnormalities such as fires and gas leaks in homes have become popular.

  In such a home alarm, the sensor unit and the alarm unit are integrated in the home alarm, and when a fire is detected, a fire alarm is issued by a voice message or the like. Is easy to install and cheap in terms of cost, and has become widespread with the obligatory installation in ordinary houses.

  In recent years, as a result of efforts to reduce the power consumption of residential alarms, a long battery life of, for example, 10 years or more is guaranteed, and no battery replacement is required during that period. When the battery is used for a long time and nears the end of its battery life and a decrease in battery voltage is detected, an alarm for notifying that the battery has run out is issued.

  Conventionally, as such a battery exhaustion alarm, a fire alarm device that outputs a battery exhaustion alarm from a speaker after a predetermined time has elapsed after detecting a decrease in battery voltage in order to reduce the battery exhaustion alarm from night to early morning (patented) Reference 1) or when the battery voltage has fallen below a predetermined voltage, the power lamp is turned on or blinked to notify the battery drop, and the switch operation is performed in this state to prompt the user to replace the battery. A battery-type alarm device (Patent Document 2) that outputs an included voice message from a speaker is known.

  In addition, if a battery voltage drop is detected while the user is absent for a long time, a battery low alarm is output continuously for as long as possible with the minimum power consumption, and the user returns home. In addition, an alarm device has also been proposed in which a battery is surely noticed and a battery operation is known by a switch operation (Patent Document 3).

JP 2005-44317 A JP 2004-54356 A Japanese Patent Laid-Open No. 2007-11828

  By the way, in such a conventional house alarm, it is assumed that even if a battery voltage drop is detected and a battery exhaustion is alarmed, a period during which a fire alarm can be normally issued is secured for a while. The threshold value for detecting the decrease in battery voltage is set.

  However, even when a fire alarm is detected immediately after a battery warning is issued by a conventional resident alarm, the battery voltage increases as the current consumption increases due to the fire alarm. There is a case where the voltage drops rapidly, drops below the reset voltage at which the CPU built in the control unit of the house alarm stops, and the fire alarm cannot be made normally. This greatly impairs the function of notifying the battery warning with a certain margin before the house alarm stops functioning.

  In order to solve this problem, the threshold value for detecting a decrease in battery voltage may be set to a higher value.However, if the threshold value is set to a higher value, the battery will run out due to a change in battery capacity due to temperature or a change in battery voltage due to noise. There is a high possibility of malfunctioning that an alarm is issued, and there is also a problem that a battery exhaustion alarm is issued early with respect to the battery life and the warranty period of the battery life is shortened.

An object of this invention is to provide the alarm device which can ensure the usable period which can perform a fire alarm operation | movement normally as much as possible even if a battery exhaustion alarm is given.

The present invention provides an alarm. That is, the present invention
Battery power,
A sensor unit that is provided separately or integrally with the alarm device and detects an abnormality,
A notification unit for outputting information including a warning by sound, sound and display, or display;
An abnormality monitoring unit that receives an abnormality detection signal from the sensor unit and outputs an abnormality alarm from the notification unit;
In an alarm device equipped with
A battery test unit for periodically detecting a battery voltage by conducting a battery load test in which a load current equivalent to that at the time of an abnormality alarm is supplied to the battery power source;
When the battery voltage detected by the battery load test falls below a predetermined threshold value, it is determined that the battery capacity is low, and a battery capacity drop alarm (battery low alarm) is intermittently output from the notification unit, and then periodically thereafter A battery capacity monitoring unit for stopping the battery load test;
Is provided.

  Here, the battery capacity monitoring unit causes the notification unit to output a battery capacity decrease alarm when the battery capacity decrease determination is continued at least twice.

  Further, the battery capacity monitoring unit sets the driving current of the battery capacity lowering alarm to be output from the notification unit to a driving current lower than the driving current of the abnormality alarm and issues an alarm.

  The battery capacity monitoring unit sets the driving current of the sound, sound and display, or display other than the abnormality alarm from the notification unit to a driving current lower than the driving current before determining the battery capacity reduction. Here, the battery capacity monitoring unit sets information to be output by setting a drive current lower than the drive current before determining that the battery capacity is reduced, information accompanying normal inspection operation, and information accompanying normal transfer inspection operation Information, periodic notification information at the time of sensor failure, and information associated with inspection operation at the time of sensor failure.

  The battery capacity monitoring unit may set the driving current of the abnormality alarm output from the notification unit to a driving current lower than the driving current before determining that the battery capacity is reduced.

Furthermore, the abnormality monitoring unit and the battery capacity monitoring unit are realized as functions of a program executed by the CPU, and the battery capacity monitoring unit notifies the battery voltage until the battery voltage drops to a predetermined reset voltage at which the CPU stops operating. To output a battery capacity low alarm intermittently.

  According to the present invention, the detection of the decrease in the battery voltage for determining the decrease in the battery capacity is determined from the battery voltage detected by performing a battery load test in which a load current equivalent to that at the time of an abnormality alarm is passed through the battery. Therefore, even after the battery capacity low alarm is output, even if the current consumption increases and the battery voltage decreases due to the actual fire detection and fire alarm, it is built in as a control unit for the alarm device. Thus, it is possible to avoid a drop below the reset voltage at which the CPU stops operating, and to ensure as much as possible a usable period during which a fire alarm can be normally performed even if a battery capacity low alarm is issued.

  In addition, when the battery capacity decrease determination is continued at least twice, a battery capacity decrease alarm is output, thereby preventing erroneous detection accompanying a decrease in battery capacity due to temperature fluctuation or the like.

  In addition, after determining the battery capacity low, the battery current low alarm can be issued by setting the operating current for outputting the battery capacity low alarm by sound or display lower than the operating current at the time of the abnormal alarm. It is possible to ensure the longest possible period as much as possible, and to inform the user that the battery has run out even when there is no long term.

  In addition, after determining that the battery capacity has been reduced, the alarm current sound, sound and display, or display drive current from the notification unit is set to a drive current lower than the drive current before determining the battery capacity decrease. The period during which the battery capacity drop alarm can be issued can be ensured as long as possible.

In addition, regarding the drive current of the abnormality alarm output from the notification unit, after determining the battery capacity decrease, the battery current decrease alarm is issued by setting the drive current to be lower than the drive current before determining the battery capacity decrease. The period that can be used can be secured as long as possible. Alternatively, since the power consumption of the battery capacity lowering alarm can be suppressed, if the period for issuing the battery capacity lowering alarm may be the same, the period until the battery capacity lowering is determined can be extended. That is, for example, the criterion for battery capacity reduction can be set to a value with a lower remaining amount.

Explanatory drawing which showed the external appearance of the house alarm device by this invention The block diagram which showed embodiment of the residence guard by this invention A graph showing the battery voltage drop characteristics as the battery capacity drops Flow chart showing processing operation in the present embodiment

  FIG. 1 is an explanatory view showing the appearance of a house alarm device according to the present invention. FIG. 1 (A) shows a front view and FIG. 1 (B) shows a side view.

  In FIG. 1, the residential alarm 10 according to the present embodiment includes a cover 12 and a main body 14. In the center of the cover 12, a smoke detecting section 16 having a smoke inlet is opened around it so that a fire is detected when smoke from the fire reaches a predetermined concentration.

  An acoustic hole 18 is provided on the lower left side of the smoke detector 16 provided in the cover 12, and a speaker is built in behind this so that an alarm sound or a voice message can be output. An alarm stop switch 20 is provided below the smoke detector 16. The alarm stop switch 20 also functions as an inspection switch.

  An LED 22 is arranged inside the alarm stop switch 20 as indicated by a dotted line. When the LED 22 is lit, the LED 22 is lit through the switch cover portion of the alarm stop switch 20 so that the lighting state of the LED 22 can be seen from the outside. Yes.

  Also, a mounting hook 15 is provided on the upper back side of the main body 14, and a screw or the like is screwed into the wall of the room to be installed, and the mounting hook 15 is attached to this screw, so that the residential alarm 10 can be installed on the wall surface. it can.

  The house alarm 10 is installed on, for example, a wall surface of a living room or a bedroom of a house, and in the event of a fire, the fire is detected and an alarm is started. Detecting this fire and initiating an alarm is referred to as “reporting” at the home alarm.

  As an alarm sound of the residential alarm 10-4 when a fire is detected, for example, “Please confirm that the Woo fire alarm has been activated” is continuously output by voice message. At the same time, the LED 22 blinks or blinks. If the alarm stop switch 20 is operated in a state in which the house alarm 10 is emitting an alarm sound, the alarm sound is stopped and the LED 22 is turned off.

  In addition, the resident alarm 10 has a failure monitoring function. When a failure is detected, for example, an alarm sound such as “beep” is intermittently output every predetermined time, and the LED 22 is turned on instantaneously to cause a failure. Is notified. The failure alarm output from the home alarm 10 can be stopped by operating the alarm stop switch 20.

  The failure that is detected and alarmed by the resident alarm 10 is mainly a battery capacity decrease alarm (battery exhaustion alarm) that detects and alarms a decrease in battery voltage. Appropriate failure alarms such as failures are included.

  FIG. 2 is a block diagram showing an embodiment of a residential alarm according to the present invention. The home alarm device 10 includes a CPU 24. For the CPU 24, a sensor unit 26, a notification unit 28, an operation unit 30, a memory 32, a transfer unit 34, a battery power supply 36, a battery test circuit unit 38, and a voltage detection circuit unit 40 are provided. Is provided.

  In the present embodiment, the sensor unit 26 is provided with a smoke detection unit 16 and outputs a smoke detection signal corresponding to the smoke density to the CPU 24. In addition to the smoke detector 16, the sensor unit 26 may be provided with a thermistor that detects a temperature due to a fire. Further, in the case of a residence warning device for gas leak monitoring, a gas leak sensor is provided in the sensor unit 26.

  The notification unit 28 is provided with a speaker 44 driven by the acoustic circuit unit 42 and an LED 22 driven by the display circuit unit 46, and outputs information including a warning by sound, sound and display, or display. That is, the speaker 44 outputs a voice message, warning sound, and various notification sounds by voice synthesis. The LED 22 displays an abnormality such as a fire or a failure by blinking, blinking, or lighting.

  The operation unit 30 is provided with an alarm stop switch 20. When the alarm stop switch 20 is operated, the alarm sound flowing from the residential alarm 10 can be stopped. The alarm stop switch 20 also serves as an inspection switch in the present embodiment.

  The alarm stop switch 20 is effective when an alarm sound is output from the notification unit 28 through the speaker 44. On the other hand, the alarm stop switch 20 functions as an inspection switch in a normal monitoring state in which no alarm sound is output. When the inspection switch is pressed, a notification voice message or the like is output from the notification unit 28.

  The battery power source 36 uses, for example, an alkaline dry battery having a predetermined number of cells, supplies a battery voltage of, for example, 5.0 volts as the rated voltage, and reduces the power consumption of the entire circuit unit in the residential alarm 10 as the battery capacity. Ensures a battery life of about 10 years.

  The CPU 24 is provided with an abnormality monitoring unit 48, a battery testing unit 50, and a battery capacity monitoring unit 52 as functions realized by executing the program. When the smoke detection signal from the smoke detection unit 16 provided in the sensor unit 26 exceeds the fire level and detects a fire, the abnormality monitoring unit 48 outputs an alarm sound such as “Woo Woo Fire Alarm “Please confirm that it has been activated” is repeatedly output, and the LED 22 of the notification unit 28 is blinked, for example.

  In addition, the abnormality monitoring unit 48 receives a transmission signal indicating a fire alarm at the transmission unit 34 when the transmission unit 34 is connected with a transmission signal line from another resident alarm. At the same time, an alarm sound such as “Please confirm that another fire alarm has been activated” is output continuously from the speaker 44 of the notification unit 28, and the LED 22 blinks.

  The battery test unit 50 outputs a test instruction signal to the battery test circuit unit 38 periodically, for example, every 4 hours, and performs a battery load test in which a load current, for example, 250 mA equivalent to that at the time of an abnormality alarm is supplied to the battery power source 36. The battery voltage detected by the voltage detection circuit unit 40 is acquired. While receiving a test instruction signal from the CPU 24, the battery test circuit unit 38 connects a test resistor to the battery power source 36 by turning on a switch element such as a transistor, and causes a corresponding load current to flow at the time of an alarm.

  The battery capacity monitoring unit 52 determines that the battery capacity has decreased when the battery voltage detected in the battery load test by the battery testing unit 50 has dropped below a predetermined threshold Vth1, and intermittently issues a battery capacity decrease alarm from the notification unit 28. At the same time, the battery load test by the subsequent battery test unit 38 is stopped.

  In the present embodiment, the battery voltage when the load test is performed in which the same load current 250 mA as that during the abnormality alarm is performed by the battery test unit 50 with respect to the rated voltage of 5.0 volts of the battery power source 36 is set as the threshold voltage Vth1. For example, when the voltage drops to Vth1 = 2.35 volts or less, it is determined that the battery capacity is low, and a battery capacity low alarm is issued.

  Further, the battery capacity monitoring unit 52 outputs a battery capacity reduction alarm from the notification unit 38 when the battery capacity reduction determination is continued at least twice. This is to prevent erroneous detection when the battery capacity temporarily decreases due to temperature.

  Furthermore, the battery capacity monitoring unit 52 sets the driving current of the battery capacity lowering alarm output from the notification unit 28 to a driving current lower than 250 mA, for example, 100 mA, which is the driving current of the abnormal alarm due to the fire detection, and issues an alarm.

  The battery capacity lowering alarm by the battery capacity monitoring unit 52 outputs “Battery out of battery” three times when it is determined that the battery capacity has decreased, and at the same time, the LED 22 blinks in synchronization with the alarm sound. After that, for example, a warning sound such as “Battery exhausted” is output three times as a regular ringing every minute. Also, when an inspection operation (test operation) is performed with the alarm stop switch 20, “battery exhausted” is output once and LED 22 blinks at the same time.

  In this way, when the battery capacity reduction alarm is output, the alarm driving current at normal time is reduced from 250 mA to 100 mA. Therefore, the alarm sound from the speaker 44 is reduced correspondingly, but it is a problem to hear the alarm sound. Sounds at a sufficient level without noise.

  In this way, once the battery capacity reduction is determined and the output of the intermittent battery capacity reduction alarm is started, voltage detection by the battery load test is stopped, but the battery capacity decreases with time. Then, until the CPU 24 decreases to a predetermined reset voltage Vth2 at which the operation stops, for example, Vth2 = 2.0 volts, the battery capacity lowering alarm is intermittently output from the notification unit 28.

  FIG. 3 is a graph showing a battery voltage decrease characteristic associated with a decrease in battery capacity in the alarm device of the present embodiment. In FIG. 3, the horizontal axis represents time, and the vertical axis represents the voltage of the battery power source.

  First, the no-load characteristic 54 is a state in which the current consumption is the lowest by performing only the abnormality monitoring, and the battery life is the longest.

  A load test characteristic 56 indicates a change in battery voltage when a battery load test is performed in which a load current of 250 mA corresponding to an abnormal alarm is periodically sent to determine a decrease in battery capacity, and the battery load at time t1. Assuming that the battery voltage has dropped to the threshold voltage Vth1 = 2.35 volts as indicated by point A in the test, intermittent output of the battery capacity drop alarm is started from this point.

  Since the operating current of the battery capacity lowering alarm is set to a lower operating current of 100 mA due to the operating current of 250 mA at the time of the abnormality alarm, when the output of the battery capacity lowering alarm is started from time t1, the battery voltage lowering characteristic is From point A on the time characteristic 56, the operating current decreases to point B on the drop alarm time characteristic 58, and thereafter the battery voltage decreases with the passage of time according to the drop alarm time characteristic 58.

  In this case, if the battery capacity reduction alarm is intermittently output without stopping the battery load test, the battery voltage decreases with time from the point A according to the load test characteristic 56, and the point C at time t2. Thus, the reset voltage Vth2 of the CPU 28 is lowered to 2.0 volts, and the function of the alarm device 10 is lost.

  However, in the present embodiment, the periodic battery load test is stopped, and the operating current of the battery capacity decrease alarm is decreased from, for example, 250 mA to 100 mA, thereby obtaining the characteristic 58 at the time of decrease alarm. The voltage drops to the reset voltage Vth2 = 2.0 volts of the CPU 28 at the point D at time t3.

  As a result, the battery capacity usable period T1 of the alarm device according to the load test time characteristic 56 can be extended to the battery capacity usable period T2 of the alarm device according to the deterioration alarm time characteristic 58.

  In particular, for the battery capacity usable period T1 according to the load test characteristic 56 in the battery capacity usable period T2, a fire detection is performed during that period, and an operating current of 250 mA flows for an abnormal alarm, so that the battery voltage Even if the voltage decreases, it only decreases to a voltage according to the load test characteristic 56, and the battery voltage is guaranteed to be equal to or higher than the CPU reset voltage Vth2 = 2.0 volts.

  For this reason, even if the intermittent output of the battery capacity reduction alarm is started from time t1, the fire alarm can be normally output for the fire detection during the usable period T1.

  After time t2, if an abnormal alarm is issued by detecting a fire in the state of the battery voltage in accordance with the decrease alarm characteristic 58, the battery voltage is reduced to the voltage of the load test characteristic 56 at that time by the abnormal alarm operation. Since this voltage is equal to or lower than the CPU reset voltage Vth2, the CPU stops and the function of the alarm stops.

  However, the battery capacity lowering alarm can be output and notified intermittently until it decreases to the CPU reset voltage Vth2 at the point D of time t3 according to the characteristic of lowering alarm 58, even if it is absent for a long time, It is possible to continue issuing a battery capacity low alarm as much as possible until returning home.

  Further, the battery capacity monitoring unit 52 sets all the sounds, sounds and displays, or display drive currents other than the abnormality alarm from the notification unit 28 to a drive current lower than the drive current before the battery capacity decrease is determined. May be.

Examples of information that is output by setting the drive current lower than the drive current before the battery capacity monitoring unit 52 determines that the battery capacity has decreased are as follows.
(1) Information when the inspection operation (test operation) is performed under normal conditions (Example: “It ’s a fire. A fire is normal.”)
(2) Information when the transfer inspection operation (transfer test operation) is performed in a normal state (Example: “Start the beeping transfer test”)
(3) Information that is periodically output when a sensor failure occurs (Example: “Pit failure” is output a predetermined number of times every predetermined time)
(4) Information when inspection operation (test operation) is performed at the time of sensor failure (Example: “It is a pin failure” is output once)
Further, the battery capacity monitoring unit 52 may set the driving current of the fire alarm output from the notification unit 28 to a driving current lower than the driving current before determining the battery capacity reduction.

  As described above, after determining the battery capacity reduction, the alarm 28 emits a sound, sound and display other than the fire alarm, or the display drive current is lower than the drive current before the battery capacity decrease is determined. By setting the current, it is possible to secure a longer period during which the battery capacity reduction alarm can be issued.

  FIG. 4 is a flowchart showing the processing operation by the CPU 24 provided in the residential alarm 10 of FIG. In FIG. 4, when power is supplied to each circuit unit including the CPU 24 by removing the electrode seal of the battery power source 36 provided in the home alarm device 10, the CPU 24 performs initialization including hardware check in step S <b> 1. After the processing, it is determined in step S2 whether or not it is normal. If there is an abnormality, a voice abnormal end message or the like is output to end abnormally. If normal, the process proceeds to step S3, and the detection provided in the sensor unit 26 is performed. The presence or absence of a fire alarm is determined based on whether or not the smoke detection signal from the smoke unit 16 exceeds a predetermined fire level.

  If a fire report is determined in step S3, the process proceeds to step S4, and a fire alarm is output from the speaker 44 of the notification unit 28 by sound output and LED 22 lighting control. After performing the fire alarm, it is determined whether or not an alarm stop operation is performed by the alarm stop switch 20 in step S5. If there is an alarm stop operation, the alarm is stopped in step S6.

  Subsequently, in step S7, it is determined whether or not the battery capacity monitoring timing is set, for example, in units of 4 hours. If it is determined that the battery capacity monitoring timing has been reached, the process proceeds to step S8, and it is checked whether or not the battery capacity reduction has been determined.

  When the determination of the battery capacity reduction has not been obtained before, the process proceeds to step S9, the battery test circuit unit 38 is operated, a test resistor is temporarily connected to the battery power supply 36, and a load current of 250 mA is passed. In this state, the battery voltage detected by the voltage detection circuit unit 40 is read.

  Subsequently, it is determined whether or not the battery voltage detected in step S10 is equal to or less than a threshold voltage vth1 for determining a decrease in battery capacity. If it is equal to or less than the threshold voltage, a decrease in battery capacity is determined in step S11. Subsequently, in step S12, it is continuously checked whether or not the battery capacity reduction determination is the second time, and if it is the first time, the process returns to step S3 to determine the next battery capacity reduction.

  If it is determined in step S11 that the determination is the second battery capacity decrease continuously, after the battery load test is prohibited in step S13, the operation current of the battery capacity decrease alarm is set in step S14, for example, at the time of alarm. From 250 mA to 100 mA.

  Subsequently, in step S15, the presence or absence of a battery capacity decrease alarm timing is checked. Every time it is determined that the alarm timing has been reached, the process proceeds to step S16, where the alarm sound from the speaker 44 of the notification unit 28 and the battery capacity decrease alarm due to the lighting of the LED 22 are performed. Is output.

  In addition, although said embodiment took the resident alarm for fire detection as an example, in addition to this, other appropriate abnormalities, such as a gas leak alarm and a security alarm, are detected. The present embodiment can be applied to the alarm device as it is. Moreover, the present invention can be applied not only to residential use but also to alarm devices for various uses such as buildings and offices.

  Moreover, although said embodiment took the case where the sensor part was integrally provided in the alarm device as an example, as another embodiment, the alarm device which provided the sensor part separately from the alarm device may be sufficient. .

  In the above embodiment, intermittent output of the battery capacity decrease alarm is started when it is determined that the battery capacity decrease is continuously performed twice due to the battery voltage decrease by the periodic battery load test. Intermittent output of a battery capacity reduction alarm may be started once or three or more times.

The present invention is not limited to the above-described embodiments, includes appropriate modifications that do not impair the objects and advantages thereof, and is not limited by the numerical values shown in the above-described embodiments.

10: House alarm 12: Cover 14: Body 15: Mounting hook 16: Smoke detector 18: Sound hole 20: Alarm stop switch 22: LED
24: CPU
26: Sensor unit 28: CPU
30: Operation section 32: Memory 34: Transfer section 36: Battery power supply 38: Battery test circuit section 40: Voltage detection circuit section 42: Acoustic circuit section 44: Speaker 46: Display circuit section 48: Abnormality monitoring section 50: Battery test Unit 52: Battery capacity monitoring unit 54: No load characteristic 56: Load test characteristic 58: Decrease alarm characteristic

Claims (7)

Battery power,
A sensor unit that is provided separately or integrally with the alarm device and detects an abnormality,
A notification unit for outputting information including a warning by sound, sound and display, or display;
An abnormality monitoring unit that receives an abnormality detection signal from the sensor unit and outputs an abnormality alarm from the notification unit;
In an alarm device equipped with
A battery test unit for periodically detecting a battery voltage by conducting a battery load test in which a load current equivalent to that at the time of an abnormality alarm is supplied to the battery power source;
When the battery voltage detected by the battery load test falls below a predetermined threshold, it is determined that the battery capacity is low, and a battery capacity drop alarm is intermittently output from the notification unit, and the battery load periodically thereafter A battery capacity monitoring unit for stopping the test;
An alarm device characterized by providing.
The alarm device according to claim 1, wherein the battery capacity monitoring unit outputs a battery capacity decrease alarm from the notification unit when the battery capacity decrease determination is continued at least twice. .
2. The alarm device according to claim 1, wherein the battery capacity monitoring unit sets the driving current of the battery capacity lowering alarm output from the notification unit to a driving current lower than the driving current of the abnormality alarm and issues an alarm. 3. Alarm device characterized by.
2. The alarm device according to claim 1, wherein the battery capacity monitoring unit is configured to obtain a sound, sound and display other than an abnormal alarm from the notification unit, or a drive current of display based on a drive current before determining a decrease in battery capacity. An alarm device characterized by setting a low driving current.
The alarm device according to claim 4, wherein the battery capacity monitoring unit sets information to be output by setting a drive current lower than the drive current before determining a decrease in battery capacity, information associated with a normal inspection operation, An alarm device comprising information associated with a normal inspection operation, periodic notification information when a sensor failure occurs, and information associated with an inspection operation when a sensor failure occurs.
2. The alarm device according to claim 1, wherein the battery capacity monitoring unit sets a driving current of an abnormality alarm output from the notification unit to a driving current lower than a driving current before determining a decrease in battery capacity. Alarm device characterized.
  2. The alarm device according to claim 1, wherein the abnormality monitoring unit and the battery capacity monitoring unit are realized as a function of a program executed by a CPU, and the battery capacity monitoring unit is configured so that the battery voltage is operated by the CPU. An alarm device characterized by intermittently outputting a battery capacity lowering alarm from the notification unit until the voltage drops to a predetermined reset voltage to be stopped.

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