JP2017167618A - Battery type alarm - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a battery type alarm capable of being restrained from issuing notification related to battery exhaustion at night.SOLUTION: The battery type alarm comprises: an event detection part 20 for detecting a prescribed event and outputting an event detection signal; a battery voltage determination part 40 for outputting a low voltage determination when a detection voltage of a battery is equal to or less than a basic threshold value; a voltage reduction notification command creation part 42 for creating a voltage reduction notification command for notifying of voltage reduction; a notification part 5 for outputting a voltage reduction notification sound in response to the voltage reduction notification command; a time zone calculation part 60 for calculating a specific time zone based on a change pattern of a temperature measurement value of environment temperature, calculating a midday time zone based on the specific time zone and clock signal, then outputting midday time zone information; and a notification management part 41 for, based on the low voltage determination and midday time zone information, applying a trigger signal for instructing that the voltage reduction notification command is transmitted to the notification part 5 in the midday time zone, to the voltage reduction notification command creation part 42.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a battery type alarm that issues an alarm by detecting an event such as gas leakage, gas generation, or fire occurrence.

  Since the battery-operated alarm device that is driven by a battery loses its function when the battery runs out, it is necessary to notify the user that the battery should be replaced when the battery voltage falls below a predetermined value. For this reason, the battery-type gas alarm device is provided with an informing means for informing the battery voltage drop by a buzzer or an artificial voice when the battery voltage becomes a predetermined value or less. However, in a case where a battery-type alarm device is installed in a house, if a battery voltage drop notification is made in the middle of the night, it will be a hindrance to sleep and annoying the resident. In particular, since the battery voltage tends to be lower in an environment where the temperature is lower than in an environment where the temperature is high, the battery voltage is likely to be equal to or lower than a predetermined value at night. When a battery voltage drop is detected, the fire alarm of the type is configured to output a battery exhaustion alarm after a predetermined time (for example, 5 hours) has elapsed from the time of detection. That is, even if the battery voltage decreases from night to early morning due to a decrease in the room temperature and a battery voltage decrease is detected, the battery exhaustion alarm is output after a predetermined time has elapsed. Thereby, it is trying to avoid that a battery exhaustion warning is output from night to early morning.

JP 2005-044317 A (paragraph number 0021-0023, FIG. 6)

  However, basically, a temperature difference occurs between night and morning, but if the temperature difference is small, the difference in voltage drop due to the temperature difference is within the error range. For this reason, the delay processing from night to day of the battery exhaustion alarm in the alarm device disclosed in Patent Document 1 is effective when the temperature fluctuation at night, morning, noon, and evening is slow and the temperature difference is small. The problem of not working. Under such circumstances, there is a demand for a battery-type alarm device that more effectively suppresses notification regarding battery exhaustion in the middle of the night.

  A battery-type alarm device according to the present invention includes a battery, an event detection unit that detects a predetermined event and outputs an event detection signal, a battery voltage detection unit that detects a battery voltage of the battery, and a temperature that measures an environmental temperature. A measurement unit; a clock generator that outputs a clock signal; a battery voltage determination unit that outputs a low voltage determination when the detection voltage detected by the battery voltage detection unit is less than or equal to a basic threshold; and the event detection An event notification command generation unit that generates an event occurrence notification command based on the signal, a voltage decrease notification command generation unit that generates a voltage decrease notification command for voltage drop notification based on the low voltage determination, and an event occurrence In response to the notification command, an event occurrence notification sound is output, a notification unit that outputs a voltage decrease notification sound in response to the voltage drop notification command, and a temperature measurement value measured over time by the temperature measurement unit change Calculating a specific time zone based on the turn; calculating a daytime zone based on the specific time zone and the clock signal; and outputting a daytime zone information; the low voltage determination; A notification management unit that provides the voltage decrease notification command generation unit with a trigger signal that instructs the voltage decrease notification command to be sent to the notification unit during the daytime based on time zone information.

  In the configuration of the invention described above, even if there is a variation in the temperature difference of the day, basically, the minimum temperature occurs before dawn in the night time zone, and the maximum temperature is around 3 o'clock (afternoon) in the day time zone. Based on the fact that it occurs. According to this configuration, the specific time zone, for example, the night time zone indicating the lowest temperature or the daytime zone indicating the highest temperature is calculated based on the change pattern of the temperature measurement value measured over time by the temperature measurement unit, The daytime zone is calculated based on the clock signal counted from the specific time zone. Therefore, by managing so that the voltage drop notification command for voltage drop notification is given to the notification unit during the calculated daytime, sleep disturbance due to the notification of voltage drop at night is suppressed with high reliability. Is done.

  In the battery type alarm device according to the present invention, in order to calculate the daytime zone, the time zone calculation unit obtains the clock signal from the start of operation by receiving power supply from the battery, and at least 1 The clock signal corresponding to the daytime period with reference to the clock signal in a specific time zone specified based on the change pattern of the temperature measurement value, relating the temperature measurement value for a day with the clock signal. You may comprise so that (count value) may be calculated. In this configuration, the daytime zone is calculated at startup based on the relationship between the clock signal output from an element such as a crystal oscillator included in the control system and the daily temperature change pattern. Since such a clock signal has been output since the start of the control system, the temperature measurement value for at least one day is acquired in association with the clock signal from the start. A specific time zone is defined as a time zone in which a characteristic temperature change such as a local minimum or maximum temperature change occurs, and this specific time zone is related to a clock signal when the specific time zone occurs. Since the time interval between the specific time zone and the daytime zone can be estimated, the timing of the daytime zone when the person is awake can be determined using the clock signal. As a result, the voltage drop can be notified at the timing of this daytime, and the notification of the voltage drop at night can be avoided.

  In order to calculate a daytime period, the time period calculation unit obtains the clock signal in response to the low voltage determination, and relates the temperature measurement value for at least one day to the clock signal, The clock signal corresponding to the daytime period may be calculated based on the clock signal in a specific time period specified based on the change pattern of the temperature measurement value. In this configuration, the relationship between the specific time zone and the clock signal is not obtained in advance, but only when the low voltage determination is made, that is, after the battery has become a low voltage to be notified, as described above. In this way, the relationship between the specific time zone and the clock signal is obtained.

  Since the minimum daily temperature is the minimum value of the daily temperature change, it can be easily and reliably obtained. The minimum temperature occurs before dawn in the night time zone. Therefore, it is convenient to calculate the exact daytime zone by adopting the nighttime zone corresponding to the lowest temperature as the specific time zone. From this, the time zone calculation unit regards the night time zone with the lowest temperature indicating the minimum value of the temperature measurement value for one day as the specific time zone, and starts from the night time zone with the lowest temperature to the day time zone. The elapsed time based on the clock signal up to may be counted to calculate the daytime zone.

  In addition, when specifying a specific time zone from the change pattern of temperature measurement values for one day, if that day is a very special day in terms of weather, the calculation of the daytime zone based on this specific time zone Large errors can occur. This problem can be avoided by acquiring a change pattern of temperature measurement values over a long period of time. Therefore, the time zone calculation unit obtains a local minimum value from the temperature measurement values for a plurality of days, and the minimum temperature indicating the representative local minimum value obtained by statistical calculation of the plurality of local minimum values. It is also possible to consider that the night time zone is regarded as the specific time zone, and the elapsed time of the clock signal from the night time zone at the lowest temperature to the daytime zone is counted to calculate the daytime zone.

  The notification of the battery voltage drop in the daytime period means that the notification is delayed for a maximum of nearly half a day. It must be avoided that the battery voltage drops to the minimum voltage during the notification delay and the battery runs out. From this, the battery voltage determination unit outputs a special low voltage determination when the detected voltage detected by the battery voltage detection unit is equal to or lower than a special threshold value lower than the basic threshold value, and the notification management unit In response to the special low voltage determination, a trigger signal that instructs the voltage drop notification command to be sent to the notification unit without delay may be provided to the voltage drop notification command generation unit. That is, when the detected voltage is equal to or lower than the special threshold, when the notification unit receives the voltage drop notification command, the notification unit immediately notifies the voltage drop sound without delay until the daytime. By setting the basic threshold to such a value that the battery voltage does not drop to the minimum voltage even if the battery is not replaced for at least half a day or more, a delay of at least a half day or more for notification that prompts battery replacement is allowed. In addition, the special threshold value is set to a value that is higher than the minimum voltage and leaves enough room for battery replacement, and it is possible to run out of the battery by providing notification prompting battery replacement based on the special threshold value without delay. Decrease.

It is a functional block diagram which shows the basics of the flow of control data in a battery type alarm device. It is explanatory drawing for demonstrating the process which divides a night time zone and a daytime zone by the temperature change of environmental temperature. It is explanatory drawing explaining the relationship between the fall curve of a battery voltage, a basic threshold value, and a special threshold value. It is a functional block diagram of an alarm system using one of the embodiments of a battery type alarm device. It is a flowchart figure which shows an example of the alerting | reporting process which alert | reports prompting battery replacement. It is a flowchart figure which shows the modification of the alerting | reporting process which alert | reports prompting battery replacement.

  Before describing a specific embodiment of the battery-type alarm device according to the present invention, the basic principle of battery replacement notification in the battery-type alarm device of the present invention will be described with reference to FIGS. 1, 2, and 3. The battery type alarm device includes a battery voltage detection unit 20, an event detection unit 3, a control unit 4, and a notification unit 5 as functional units. Here, as the battery 2, a battery pack having a rating of 3V (for example, two 1.5V batteries) is used. Each function unit can basically maintain each function by supplying power from the battery 2, and when the battery 2 becomes a minimum voltage value, for example, 1.9 V or less, the normal function of the function is lost.

  The battery voltage detection unit 20 detects the battery voltage and outputs the detected voltage. The event detection unit 3 is a sensor that detects at least one of fire, gas leakage, carbon monoxide due to incomplete combustion, and the like as a detection event and outputs an event detection signal. The temperature measurement unit 30 includes a temperature sensor that measures the temperature (environmental temperature) of a room or area monitored by the battery-type alarm device, and outputs the temperature measurement value. The sound output by the notification unit 5 is a term in a wide range and includes buzzer sounds and electronic sounds. Based on a notification command from the control unit 4, necessary sounds are output from a buzzer, a speaker, or the like.

  The control unit 4 includes a time zone calculation unit 60, a battery voltage determination unit 40, a notification management unit 41, a voltage drop notification command generation unit 42, and an event notification command generation unit 43, which are mainly constructed by software. And are included. The time zone calculation unit 60 calculates a specific time zone based on the change pattern of the temperature measurement value measured over time by the temperature measurement unit 30, and the specific time zone and a clock generator built in the control unit 4. The daytime zone is calculated based on the clock signal (clock value) output from 61, and the daytime zone information is output. Hereinafter, this will be described in detail with reference to FIG. FIG. 2 shows a temperature change graph for almost one day. The time zone calculation unit 60 acquires the temperature measurement value from the temperature measurement unit 30 at a predetermined time interval, associates the temperature measurement value with the clock value (representing the acquisition time), and records it in the memory. The time zone in which the lowest temperature and the highest temperature occur is calculated as the specific time zone from the temperature change pattern defined by all temperature measurement values. In FIG. 2, the minimum temperature is indicated by Tmin, the clock value Cm based on the clock signal is assigned as the generation time, the maximum temperature is indicated by Tmax, and the clock value Cn based on the clock signal is assigned as the generation time. . Since the minimum temperature occurs before dawn, if the time of the minimum temperature is set as the reference time, the lunch time (noon) included in the daytime zone can be calculated from the reference time. When the clock value from the reference time to lunch time (noon) is obtained, the time width from the arbitrary time point to lunch time (noon) (the count value of the clock value) can be calculated based on this. Thereby, the time zone calculation unit 60 can arbitrarily calculate a time (clock value count amount) from a time point to a specific time zone, for example, a day time zone (more precisely, noon). It is also possible to output time (clock value) information from an arbitrary time point to the daytime zone as daytime zone information.

  As shown in FIG. 3, the battery voltage determination unit 40 has a basic threshold value and a special threshold value as determination criteria for the detection voltage detected by the battery voltage detection unit 20. The basic threshold value and the special threshold value are higher than the minimum voltage value of the battery 2 at which the alarm becomes inoperable, and the basic threshold value is higher than the special threshold value. For example, the minimum voltage value can be set to about 1.9V, the basic threshold value can be set to about 2.4V, and the special threshold value can be set to about 2.1V. The battery voltage determination unit 40 starts to decrease the remaining amount of the battery 2, and first outputs a low voltage determination when the detected voltage is lower than the basic threshold value. (2.1V) When it becomes below, special voltage judgment is output.

  The notification management unit 41 manages the low voltage determination output from the battery voltage determination unit 40 and the voltage drop notification performed based on the low voltage determination. The voltage drop notification command generation unit 42 generates a voltage drop notification command for voltage drop notification and outputs it to the notification unit 5. Upon receiving this voltage drop notification command, the notification unit 5 performs a voltage drop notification by a buzzer or the like. The output timing of the voltage drop notification command of the voltage drop notification command generation unit 42 is determined by a trigger signal from the notification management unit 41.

  The low voltage determination and the special voltage determination are commands for notifying that the battery is about to run out, but the low voltage determination is less strict than the special voltage determination. Therefore, first, when the low voltage determination is output, the notification management unit 41 sends the voltage decrease notification command to the notification unit 5 in the daytime period in order to avoid notification at night. To manage. On the other hand, when a special voltage determination with a high degree of urgency is output, the notification management unit 41 causes the voltage drop notification command generation unit 42 to send a voltage drop notification command to the notification unit 5 without delay regardless of whether it is night or day. to manage. That is, when receiving the low voltage determination, the notification management unit 41 takes into account the daytime zone information from the time zone calculation unit 60 and triggers that the voltage drop notification command is sent to the notification unit 5 in the daytime zone. The signal is given to the voltage drop notification command generation unit 42. Further, when receiving the special low voltage determination, the notification management unit 41 gives a trigger signal for instructing the voltage drop notification command to be sent to the notification unit 5 without delay to the voltage drop notification command generation unit 42. In addition, the voltage drop notification (battery warning) based on the special voltage determination is output from the notification unit 5 in a notification form having a greater degree of tension than the voltage drop notification (battery warning) based on the low voltage determination. It is preferable.

  Next, an alarm system in which one embodiment of a battery-type alarm device according to the present invention is used will be described with reference to the drawings. FIG. 4 is a functional block diagram of such an alarm system. The basic principle described with reference to FIGS. 1 to 3 is adopted for the battery exhaustion alarm control in the battery type alarm device used here.

  This battery type alarm device is a gas leak alarm device (hereinafter simply abbreviated as “alarm device”) incorporating a battery pack with a rating of 3V as the battery 2, and functions by running out of the battery (battery voltage becomes lower than the minimum voltage value). In order to avoid loss of the battery, it is necessary to replace the battery before the battery runs out. The alarm device is arranged in a ceiling area of a general residential kitchen or a room having gas facilities.

  Since the structure of the event detection unit 3 formed as a gas detection sensor is well known, the description of the structure here is omitted. In order to know the remaining charge amount of the battery 2, a battery voltage detection unit 20 that detects the battery voltage is connected to the battery 2. The alarm device incorporates a buzzer 50 as a voice notification device of the notification unit 5 that performs voice notification.

  The control function of the alarm device is almost integrated in the control unit 4. The battery voltage determination unit 40, the notification management unit 41, the voltage drop notification command generation unit 42, the event notification command generation unit 43, the time zone calculation unit 60, and the clock generator 61 that are built in the control unit 4 are shown in FIG. It is almost the same as the contents explained using. The event detection signal (gas leak detection signal) from the event detection unit 3, the detection voltage from the battery voltage detection unit 20, and the temperature measurement value from the temperature measurement unit 30 are transferred to the inside via the input data processing unit 44. Is done. An event occurrence notification command (gas leak occurrence notification command) from the event notification command generation unit 43 is converted into a drive signal for the buzzer 50 by the output data processing unit 45 and is sent to the buzzer 50 to generate an event occurrence notification sound (gas leak notification). The buzzer is driven with the buzzer sound pattern set as (Sound). In this embodiment, the time zone calculation unit 60 calculates the day time zone (noon time) from the lowest temperature of the day when the alarm is activated, and the time from the current time to the day time zone (count value) or the current time Is sent to the notification manager 41 as daytime zone information.

  The battery voltage determination unit 40 outputs a low voltage determination when the battery voltage falls below the basic threshold value (see FIG. 3). The notification management unit 41 immediately waits until the daytime period when the time period when the low voltage determination is received is the daytime period, and waits until the daytime period when the time period when the low voltage determination is received is the nighttime period. Is output to the notification unit 5, a trigger signal is given to the voltage drop notification command generation unit 42. The voltage drop notification command is converted into a drive signal for the buzzer 50 by the output data processing unit 45 and sent to the buzzer 50 to sound a buzzer sound as a voltage drop notification sound.

  The battery voltage determination unit 40 further outputs a special low voltage determination when the battery voltage falls below the special threshold value (see FIG. 3). The notification management unit 41 provides a trigger signal to the voltage drop notification command generation unit 42 regardless of whether the time zone in which the special low voltage determination is received is a daytime zone or a night time zone, and the voltage drop notification command generation unit 42 A notification command is output to the notification unit 5. The voltage drop notification command here is converted into a drive signal for the buzzer 50 by the output data processing unit 45, sent to the buzzer 50, and a buzzer sound different from the buzzer sound based on the previous basic threshold as a voltage drop notification sound. Sound.

  Next, an example of a notification process for performing notification for prompting battery replacement will be described using the flowchart of FIG. When the alarm device is activated, daytime time zone calculation processing from steps # 101 to # 107 is executed using the algorithm described above with reference to FIG. In this process, first, a temperature measurement value is acquired from the temperature measurement unit 30 at a predetermined time interval (# 101), a clock signal is acquired from the clock generator 61 (# 102), and the temperature and the clock value are used. Is developed over time, and a temperature distribution as schematically shown in FIG. 2 is recorded (# 103). When the temperature distribution for one day is recorded (YES branch of # 104), the minimum temperature is calculated (# 105), and the clock value at the time when the minimum temperature occurs is set as the reference clock value (# 106). . Since the minimum temperature occurs before dawn, the clock value of the daytime zone can be calculated based on the reference clock value, thereby generating and outputting daytime zone information indicating the time until the daytime zone. (# 107). If the temperature measurement value acquisition period in step # 104 is not one day but a plurality of days, a plurality of local minimum values are obtained in units of one day. The obtained representative minimum value (intermediate value, average value, etc.) is calculated as the minimum temperature. The time zone of the lowest temperature showing this representative minimum value can be regarded as the specific time zone.

  When the daytime period calculation process ends, the battery replacement notification process starts. First, the detection voltage from the battery voltage detection unit 20 is acquired and compared with the basic threshold value and the special threshold value. If the detected voltage exceeds the basic threshold value (NO branch of # 12), it is considered that the battery is not substantially depleted, and subsequent battery replacement notification processing is not performed, and the process returns to acquisition of the detected voltage. If the detected voltage is equal to or lower than the basic threshold value and exceeds the special threshold value (YES branch of # 12 and NO branch of # 13), the battery deadline warning process is performed. In the process of battery warning, first, the notification management unit 41 reads the daytime zone information, and sets a delay time (count amount) until the daytime zone (# 21). If the delay time has elapsed (YES branch of # 22), a trigger signal is output (# 23). Here, if the delay time is in the middle (NO branch of # 22), the process waits as it is, but may return to step # 107. When the trigger signal is output, the voltage drop notification command generation unit 42 gives the voltage drop notification command to the output data processing unit 45 (# 24), and a buzzer sound as a warning message for battery exhaustion is emitted from the buzzer 50 (# 25). ). When battery replacement is performed by the battery exhaustion warning (YES branch of # 26), this battery replacement notification routine is reset and starts from the beginning. Even if the battery is not replaced, the buzzer sound as a warning message for battery exhaustion is maintained for a predetermined time (NO branch of # 26 and NO branch of # 27). When the battery has not been replaced and the predetermined time has passed, the resident is considered to be absent and the buzzer sound as a warning for running out of the battery is temporarily stopped in order to reduce battery consumption. A command to forcibly prohibit the output is given to the notification management unit 41 (# 28).

  If the detected voltage is equal to or lower than the special threshold value (# 12 YES branch and # 13 YES branch), a battery exhaustion warning process is performed. In the battery-out warning process, unlike the battery-out warning process, a trigger signal is output without delay (# 31), and the voltage drop notification command generation unit 42 outputs a voltage drop notification command to the output data processing unit 45. (# 32). Thereby, a buzzer sound as a battery exhaustion alarm is emitted from the buzzer 50 (# 33). When battery replacement is performed due to a battery exhaustion warning (YES branch of # 34), this battery replacement notification routine is reset and starts from the beginning. In this routine, as long as the battery is not replaced, the buzzer sound as a battery exhaustion alarm is maintained (NO branch of # 26 and a repeated loop of # 33), but the battery exhaustion alarm may be terminated within a predetermined time. .

  FIG. 6 shows a modification of the battery replacement notification process shown in the flowchart of FIG. In the battery replacement notification process shown in the flowchart of FIG. 6, unlike the process shown in FIG. 5, the battery replacement notification process in FIG. 5 performs the daytime from step # 101 to step # 107 performed at startup. The band calculation process is performed before the battery deadline warning notification process. That is, in this battery replacement notification process, when activated, the detected voltage from the battery voltage detection unit 20 is compared with the basic threshold value and the special threshold value, and the battery voltage notifies the battery replacement. It is checked whether or not it has decreased to a certain extent (# 11 to # 13). In this check, if the detected voltage is below the basic threshold and above the special threshold (# 12 YES branch and # 13 NO branch), the daytime calculation is performed prior to the processing of the dead battery warning. Processing is executed (step # 101 to step # 107). When the daytime zone calculation process is executed and the daytime zone information is output, the delay time is set based on the daytime zone information (# 22), and the battery deadline warning process is performed.

[Other alternative embodiments]
(1) In the embodiment described above, the event detected by the event detection unit 3 is gas detection, but it may be fire detection. Furthermore, those composites may be sufficient.
(2) In the above-described embodiment, each functional unit constructed in the control unit 4 is divided for emphasis in order to make the explanation of the control easy to understand. Further divisions can be made freely within the framework of the invention.
(3) In the above-described embodiment, the notification unit 5 is configured as a sound output unit that outputs a buzzer sound, an artificial sound, or the like. However, the notification unit 5 may additionally include a visual notification function that lights an LED or the like. .
(4) In the above-described embodiment, the reference specific time zone is set to dawn before the night time zone in which the lowest temperature occurs, but instead, it may be a midday afternoon in the daytime zone in which the highest temperature occurs.
(5) In the above-described embodiment, the time zone calculation unit 60 determines the day before dawn or the afternoon as the specific time zone from the daily temperature change of the environmental temperature, and detects the decrease in the battery voltage to be noted. Time to daytime is calculated. However, the time zone calculation unit 60 acquires clock information through communication with a communication device (such as a remote controller, a mobile phone, or a television) having an external clock function, and based on the clock signal based on the acquired clock information. Techniques for calculating the time until daytime are also included in the present invention.

  Note that the configurations disclosed in the above-described embodiments (including other embodiments, the same applies hereinafter) can be applied in combination with the configurations disclosed in the other embodiments as long as no contradiction arises. The embodiment disclosed in this specification is an exemplification, and the embodiment of the present invention is not limited to this. The embodiment can be appropriately modified without departing from the object of the present invention.

  The present invention is applicable to various alarm devices driven by a battery.

2: Battery 20: Battery voltage detection unit 3: Event detection unit 30: Temperature measurement unit 4: Control unit 40: Battery voltage determination unit 41: Notification management unit 42: Voltage drop notification command generation unit 43: Event notification command generation unit 44 : Input data processing unit 45: output data processing unit 5: notification unit 50: buzzer 60: time zone calculation unit 61: clock generator

Claims (6)

Battery,
A battery voltage detector for detecting a battery voltage of the battery;
An event detector that detects a predetermined event and outputs an event detection signal;
A temperature measuring unit for measuring the environmental temperature;
A clock generator for outputting a clock signal;
A battery voltage determination unit that outputs a low voltage determination when the detected voltage detected by the battery voltage detection unit is equal to or lower than a basic threshold;
Based on the event detection signal, an event notification command generation unit that generates an event occurrence notification command;
Based on the low voltage determination, a voltage drop notification command generation unit that generates a voltage drop notification command for voltage drop notification;
In response to the event occurrence notification command, an event occurrence notification sound is output, and a notification unit that outputs a voltage decrease notification sound in response to the voltage drop notification command;
Calculate a specific time zone based on a change pattern of temperature measurement values measured over time by the temperature measurement unit, calculate a daytime zone based on the specific time zone and the clock signal, and daytime zone information A time zone calculation unit that outputs
Based on the low voltage determination and the daytime zone information, a notification management unit that provides the voltage drop notification command generation unit with a trigger signal that instructs the voltage drop notification command to be sent to the notification unit during the daytime period When,
Battery powered alarm with.   The time zone calculating unit obtains the clock signal from the start-up when receiving power supply from the battery and starting to operate, and relates the temperature measurement value for at least one day to the clock signal, and the temperature measurement value The battery-operated alarm device according to claim 1, wherein the clock signal corresponding to the daytime time zone is calculated based on the clock signal in a specific time zone specified based on the change pattern.   The time zone calculation unit obtains the clock signal in response to the low voltage determination, associates the temperature measurement value for at least one day with the clock signal, and based on the change pattern of the temperature measurement value The battery-powered alarm device according to claim 1, wherein the clock signal corresponding to the daytime time zone is calculated based on the clock signal in a specified time zone.   The time zone calculation unit regards a night time zone with the lowest temperature indicating a minimum value of the temperature measurement value for one day as the specific time zone, and the clock from the night time zone with the lowest temperature to the day time zone. The battery type alarm device according to any one of claims 1 to 3, wherein the daytime is calculated by counting an elapsed time of a signal.   The time zone calculation unit obtains a plurality of daily minimum values from the temperature measurement values for a plurality of days, and shows a representative minimum value obtained by statistical calculation of the plurality of minimum values at the night of the lowest temperature. 4. The daytime zone is calculated by regarding the time zone as the specific time zone and counting the elapsed time of the clock signal from the nighttime zone at the lowest temperature to the daytime zone. The battery-type alarm device according to the item.   The battery voltage determination unit outputs a special low voltage determination when the detection voltage detected by the battery voltage detection unit is equal to or lower than a special threshold value lower than the basic threshold value, and the notification management unit 6. The trigger according to claim 1, wherein, in response to a low voltage determination, a trigger signal that instructs the voltage drop notification command to be sent to the notification unit without delay is provided to the voltage drop notification command generation unit. Battery-powered alarm.

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