JP2010224910A - Alarm unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an alarm unit of which the reproducing speed of voice can be varied. <P>SOLUTION: The alarm unit is provided with: a fire detection means 5 for detecting the abnormality of a monitor region; a voice data memory 15a for storing voice data for notifying a resident that abnormality has been detected in the monitor region; voice outputting means (11, 15) for reproducing and outputting the voice data; reproducing speed setting means (12, 13c to 13e) for setting the reproducing speed of the voice data based on the operation of the voice output stop switch 8; and a microcomputer 12 for controlling the voice outputting means (11, 15) to reproduce the voice data based on the reproducing speed set by the reproducing speed setting means when the fire detection means 5 detects the fire in the monitor region. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an alarm device, and more particularly to control of a reproduction speed of the alarm sound.

  Conventionally, as an example of an alarm device, a fire alarm device that detects an abnormality in a monitoring area, for example, a fire and sounds a fire alarm sound, is particularly suitable for a detached house. In such a fire alarm device, a buzzer sound has been conventionally used as a fire alarm sound. However, in recent years, a tendency to use sound has been increasing so that residents can easily understand the contents (for example, patents). Reference 1).

Japanese Utility Model Publication No. 05-092892

  By the way, the residents are considered to be people of a wide range of ages from young people to elderly people, but the sound reproduction speed in the alarm device is fixed at a constant speed. For this reason, for example, it may be difficult for elderly people to hear the voice quickly, but at present, it has not been possible to change to a desired voice reproduction speed.

  The present invention has been made to solve the above-described problems, and an object thereof is to provide an alarm device that can change the playback speed of sound.

  An alarm device according to the present invention includes an abnormality detection unit that detects an abnormality in a monitoring area, a storage unit that stores audio data for notifying that an abnormality has been detected in the monitoring area, and reproduces the audio data. Audio output means for outputting, reproduction speed setting means for setting the reproduction speed of audio data by the audio output means based on operation of the operation unit, and when the abnormality detection means detects an abnormality in the monitoring area And control means for controlling the audio output means to reproduce the audio data based on the reproduction speed set by the reproduction speed setting means.

  In the alarm device according to the present invention, the operation unit uses a sound output stop switch operated to stop sound output by the sound output means.

  In the alarm device according to the present invention, the reproduction speed setting means can change the reproduction speed of the audio data in a plurality of stages according to the operation time or the number of operations of the audio output stop switch.

  In the alarm device according to the present invention, the playback speed setting means switches the playback speed of the audio data from the default to a predetermined playback speed when the voice output stop switch is operated when the alarm is turned on. To do.

  In the alarm device according to the present invention, the control means causes the audio data to be reproduced at the reproduction speed set in the reproduction speed setting means when the audio output stop switch is operated in a state where no abnormality is detected. Is.

  In the alarm device according to the present invention, the playback speed setting means can return the playback speed of the audio data from the set playback speed to the default by operating the audio output stop switch.

  An alarm device according to the present invention includes abnormality detection means, storage means, audio output means, reproduction speed setting means, and control means having the above-described configuration, and is based on the reproduction speed set based on the operation of the operation unit. Audio data can be reproduced, and the user can arbitrarily change the audio reproduction speed.

  In the alarm device according to the present invention, the operation unit uses an audio output stop switch operated for stopping the audio output by the audio output means for adjusting the audio speed, and it is necessary to increase the number of parts. And a simple configuration can be obtained.

  In the alarm device according to the present invention, the playback speed setting means switches the playback speed of the audio data from the default to a predetermined playback speed when the voice output stop switch is operated when the alarm is turned on. Thus, the user can easily change the default to a predetermined reproduction speed when the alarm device is powered on.

  In the alarm device according to the present invention, when the audio output stop switch is operated in a state where no abnormality is detected, the control means reproduces the sound at the reproduction speed set in the reproduction speed setting means. The user can easily check the currently set playback speed by operating the switch. Alternatively, the user can check the playback sound when the playback speed of the sound data is switched.

  In the alarm device according to the present invention, the playback speed setting means can return the playback speed of the audio data from the set playback speed to the default by operating the audio output stop switch. For this reason, the playback speed can be easily returned to the default.

It is a circuit block diagram which shows the internal circuit of the fire alarm which concerns on embodiment of this invention. It is a flowchart which shows the main operation | movement of the fire alarm of FIG. It is a flowchart which shows the process of switch input determination of FIG. It is a flowchart which shows the process of the fire monitoring of FIG. It is a flowchart which shows the process of the monitoring result output of FIG.

Embodiment.
There are various alarm devices such as a fire alarm device and a gas leak alarm device. In addition, fire alarms include a fire alarm that detects smoke with a light emitting element and a light receiving element, a fire alarm that detects heat with a thermal element, and a fire alarm that detects flame with a pyroelectric element. An alarm is present. In the present embodiment, a case where the present invention is applied to a fire alarm device that detects heat by a thermistor that is a thermal element will be described as an example.

FIG. 1 is a circuit configuration diagram showing main internal circuits of the fire alarm 100 according to the present embodiment.
The fire alarm device 100 includes a battery 1, a fire detection unit 5, a microcomputer (hereinafter referred to as a microcomputer) 12, an audio output unit including a voice synthesis circuit 15 and a speaker 11 as main components.

(Microcomputer)
The microcomputer 12 includes a storage unit 13 for storing various flags and data, and a timer unit 14, and controls the operation of the fire alarm device 100 by a CPU (not shown). The microcomputer 12 (or CPU) corresponds to the control means of the present invention.

  The storage unit 13 is configured by a rewritable nonvolatile memory such as an EEPROM, for example. The storage unit 13 includes a fire flag 13a that is set when a fire is detected, a fire sound stop flag 13b that is set by operating a sound output stop switch 8 that will be described later, and a constant speed flag that is set according to the alarm sound reproduction speed. 13c, a low speed flag 13d, and an ultra low speed flag 13e. The storage unit 13 and the CPU (not shown) correspond to the playback speed setting means of the present invention.

  The timer unit 14 includes a timer 14a for 5 minutes. The 5-minute timer 14a is a timer that counts the time from when the audio output stop switch 8 is operated.

(Power supply)
The battery 1 is composed of, for example, a lithium battery, and is a power source that constantly supplies power to the microcomputer 12 and the like via the constant voltage circuit 4. The battery 1 can supply stable power to the microcomputer 12 via the constant voltage circuit 4.

(Fire detection part)
The fire detection unit 5 is a thermal fire detection unit including a thermistor 6 and a resistor 7, and corresponds to the abnormality detection means of the present invention. The thermistor 6 and the resistor 7 are connected in series, and a constant voltage is applied from both ends of the thermistor 6 and the resistor 7 via the constant voltage circuit 4. Further, the tip of the thermistor 6 is provided near the surface of the housing of the fire alarm 100. This facilitates the transfer of heat during a fire to the thermistor 6.

  A voltage (detection voltage value) obtained by dividing the resistance ratio by the thermistor 6 and the resistor 7 is input to the microcomputer 12. Since the resistance value of the thermistor 6 changes depending on the temperature, when the thermistor 6 is heated during a fire, the voltage value between the thermistor 6 and the resistor 7 changes. The microcomputer 12 determines that a fire has occurred when the voltage value between the thermistor 6 and the resistor 7 becomes, for example, a fire level or higher, and the microcomputer 12 sets the fire flag 13a in the storage unit 13.

  There are two types of thermistors 6: (a) a type in which the resistance value increases as the temperature rises, and (b) a type in which the resistance value decreases as the temperature rises. Here, the (b) type is used. Has been. If the detected voltage value of the (b) type thermistor 6 is equal to or greater than a fire detection threshold (for example, 2 V), it is determined that a fire has occurred.

(Voice output means)
The fire alarm device 100 includes a sound output unit including a speech synthesis circuit 15 and a speaker 11. The voice synthesis circuit 15 includes a voice data memory 15a. The audio data memory 15a is a memory in which audio data output from the speaker 11 is stored, and is constituted by a ROM, for example. In the voice data memory 15a, the fire alarm output when the fire alarm 100 detects a fire, the expiration date indicating that the expiration date of the fire alarm 100 has expired, and the inspection result is normal. Various audio data such as an inspection normal voice to be displayed, an inspection abnormal voice to indicate that the inspection result is abnormal, and a voice for outputting the elapsed usage time and usable time of the fire alarm device 100 are stored. And this audio | voice data is comprised from the audio | voice data recorded, for example at 8 kHz. When playing back audio at a constant speed, the audio data is played at 1 / 8kHz = 125μs cycle. When the sound is reproduced at a low speed or an ultra-low speed, the reproduction period is extended, for example, 125 μs → 130 μs, 135 μs, and the sound is reproduced more slowly than usual. The voice synthesis circuit 15 is connected to the constant voltage circuit 4 via the switch 16. When a control signal is supplied from the microcomputer 12 to the voice synthesis circuit 15, the switch 16 is turned on by the control of the microcomputer 12. Thus, the speech synthesis circuit 15 is ready to be driven.

The microcomputer 12 outputs a control signal Lm for specifying the audio data to be reproduced, and turns on the control signals L1 to L3 according to the set flag. For example, when the constant speed flag 13c is set, the control signal L1 is turned on, when the low speed flag 13d is set, the control signal L2 is turned on, and when the super low speed flag 13e is set. Turns on the control signal L3.
The voice synthesis circuit 15 reads the corresponding voice data from the voice data memory 15a based on the control signal Lm from the microcomputer 10, plays back the voice data at a playback speed based on the control signals L1 to L3, and sends it to the speaker 11. The speaker 11 outputs various sounds such as fire sounds.

(Inspection means)
The fire alarm 100 performs battery voltage drop monitoring as an internal circuit check. The battery voltage drop monitoring is performed by the power supply monitoring circuit 2 detecting the voltage value of the battery 1. Specifically, when the microcomputer 12 turns on the switch 3, the power supply monitoring circuit 2 is driven, and the power supply monitoring circuit 2 detects the voltage value of the battery 1. The power supply monitoring circuit 2 outputs the detected voltage value to the microcomputer 12, and the microcomputer 12 determines that the voltage of the battery 1 has decreased if the detected voltage value is equal to or lower than a predetermined determination level.

  In this embodiment, only battery voltage drop monitoring is performed as an inspection of the internal circuit. However, this is only an example, and the voltage value between the thermistor 6 and the resistor 7 is monitored to disconnect (deteriorate) the thermistor 6. May be checked. It is also possible to test whether audio is output from the speaker 11.

  The audio output stop switch 8 is operated to stop the output of the alarm sound for a predetermined time, and the microcomputer 12 stops the output of the alarm sound for a predetermined time by operating this switch. The audio output stop switch 8 functions as an operation unit for setting any one of the constant speed flag 13c, the low speed flag 13d, and the super low speed flag 13e. Or it can be made to function also as an inspection result output switch for outputting the inspection result by the inspection means by voice.

  The fire alarm 100 configured as described above is installed on a ceiling surface of a residence or the like that is a monitoring area, and monitors a fire.

Next, the operation of the fire alarm 100 will be described.
FIG. 2 is a flowchart showing the main operation of the fire alarm device 100. 3 to 5 are flowcharts showing details of each process shown in FIG.

First, the main operation of the fire alarm 100 will be described with reference to FIG.
When the battery 1 is loaded and the power is turned on (S1), the microcomputer 12 clears all the flags (13a to 13e) in the storage unit 13 (S2). Then, the constant speed flag 13c is set and a default is set (S3). The microcomputer 12 clears all timers (S4). In the present embodiment, the timer unit 14 clears the 5-minute timer 14a. The processing so far is the initial processing performed when the power is turned on.

  Thereafter, a series of processes of switch input determination (S5), fire monitoring (S6), and monitoring result output (S7) are repeated.

FIG. 3 is a flowchart showing the switch input determination (S5) process of FIG.
The microcomputer 12 determines whether or not there is a switch input of the audio output stop switch 8 (S51), and if there is no switch input, the process is terminated. If there is a switch input of the sound output stop switch 8, it is determined whether or not the fire flag 13a is set (S52). If the fire flag 13a is set, the fire sound stop flag 13b is set. (S53), and the process ends.

  If there is a switch input of the voice output stop switch 8 (S51) and the fire flag 13a is not set (S52), the microcomputer 12 determines whether the switch input of the voice output stop switch 8 is 1 second or longer. (S54) If it is not longer than 1 second, the low speed flag 13d is set (S55), the constant speed flag 13c and the super low speed flag 13e are cleared (S56), and a fire sound (low speed) is output (S57). ). When outputting the fire sound (low speed), the microcomputer 12 turns on the switch 16 and then outputs a control signal Lm for selecting sound data of the fire sound to the sound synthesis circuit 15. The control signal L2 is turned on. The voice synthesis circuit 15 selects the corresponding voice data from the voice data memory 15a, plays back the voice data at a low speed, and outputs the playback signal from the speaker 11.

  If the microcomputer 12 determines that the switch input of the audio output stop switch 8 is 1 second or longer, the microcomputer 12 determines whether or not the switch input is 3 seconds or longer (S58). If the switch input is not longer than 3 seconds, the microcomputer 12 sets the ultra low speed flag 13e (S59), clears the constant speed flag 13c and the low speed flag 13d (S59A), and outputs a fire sound (ultra low speed). (S59B). When outputting the fire sound (ultra-low speed), the microcomputer 12 turns on the switch 16 and then outputs a control signal Lm for selecting the sound data of the fire sound to the sound synthesis circuit 15. Then, the control signal L3 is turned on. The voice synthesizing circuit 15 selects the corresponding voice data from the voice data memory 15a, makes the playback of the voice data extremely slow, and outputs the playback signal from the speaker 11.

  If the microcomputer 12 determines that the switch input of the audio output stop switch 8 is 3 seconds or longer, the microcomputer 12 sets the constant speed flag 13c (S59C), and clears the low speed flag 13d and the ultra low speed flag 13e ( S59D), fire sound (constant speed) is output (S59E). When outputting the fire sound (constant speed), the microcomputer 12 turns on the switch 16 and then outputs a control signal Lm for selecting the sound data of the fire sound to the sound synthesis circuit 15. The control signal L1 is turned on. The voice synthesis circuit 15 selects the corresponding voice data from the voice data memory 15a, makes the playback of the voice data constant, and outputs the playback signal from the speaker 11.

  As described above, in the switch input determination (S5), if there is a switch input of the audio output stop switch 8 in a state where a fire has occurred (a state where the fire flag 13a is set), the fire audio stop flag 13b is set. Further, when the sound output stop switch 8 is operated in a state where no fire has occurred (fire flag 13a is not set), any of the low speed flag 13d, the ultra low speed flag 13e, and the constant speed flag 13c is set. (S55, S59, S59C) and the set contents can be confirmed (S57, S59B, S59E). When the audio output stop switch 8 is not operated, the constant speed flag 13c is set by the above process (S3).

FIG. 4 is a flowchart showing the fire monitoring (S6) process of FIG.
The microcomputer 10 takes in the voltage value between the thermistor 6 and the resistor 7 and determines whether or not a fire has occurred based on the voltage value (S61). When it is determined that the thermistor 6 is heated and the detection voltage value increases and a fire has occurred, the fire flag 13a is set (S62), and then whether or not the fire sound stop flag 13b is set. Is determined (S63). If the fire sound stop flag 13b is not set, the process proceeds to step (S67) described later. If the fire sound stop flag 13b is set, the timer 14a starts counting for 5 minutes. It is determined whether or not (S64). If the count by the timer 14a has not been started for 5 minutes, the timer count by the timer 14a is started for 5 minutes (S65).

  When the count by the 5-minute timer 14a is started (S64) and after the timer count by the 5-minute timer 14a is started (S65), it is determined whether the count value by the 5-minute timer 14a has passed 5 minutes. (S66). If 5 minutes have not elapsed, the process is terminated. If 5 minutes have elapsed, the timer 14a is cleared for 5 minutes (S67), the fire sound stop flag 13b is cleared (S68), The process ends.

  If it is determined in the determination process (S61) that no fire has occurred, the fire flag 13a is cleared (S69), and the process proceeds to step (S67).

FIG. 5 is a flowchart showing the monitoring result output (S7) process of FIG.
The microcomputer 12 determines whether or not the fire flag 13a is set (S71), and ends the process if it is not set. If the fire flag 13a is set, it is determined whether or not the fire sound stop flag 13b is set (S72). If the fire sound stop flag 13b is set, the process is terminated.
If the fire sound stop flag 13b is not set, it is determined whether or not the constant speed flag 13c is set (S73). If the constant speed flag 13c is set, the above process causes a fire. The sound is reproduced at a constant speed (S74). If the constant speed flag 13c is not set, it is determined whether or not the low speed flag 13d is set (S75). If the low speed flag 13d is set, the fire sound is transmitted at a low speed by the above processing. Reproduction is performed (S76). If the low speed flag 13d is not set, the super low speed flag 13e is in the set state, so that the fire sound is reproduced at the ultra low speed by the above processing (S77). In the processes (S74), (S76), and (S77), the switch 16 is controlled to be on.

  As described above, the details of each process of the switch input determination (S5), the fire monitoring (S6) and the monitoring result output (S7), which are repeatedly processed after the power is turned on, have been described. A description will be given of a non-occurring state and a occurring state, respectively.

(No fire has occurred)
(S5)
In the switch input determination (S5) of FIG. 3, the microcomputer 12 determines the switch input (S51), but ends the process if there is no switch input.
(S6)
In the fire monitoring (S6) of FIG. 4, the microcomputer 12 determines whether or not a fire has occurred (S61). At this stage, since no fire has occurred, the fire flag 13a is cleared (S69) for 5 minutes. The timer 14a is cleared (S67), the fire sound stop flag 13b is cleared (S68), and the process is terminated.
(S7)
In the monitoring result output (S7) of FIG. 5, since the fire flag 13a is not set, the microcomputer 12 performs a determination process (S71) and ends the process.
That is, in a state where no fire has occurred, the processes (S51), (S61), (S69), (S67), (S68), and (S71) are repeated. However, the audio output stop switch 8 is not operated.

(When a fire occurs)
(A) When a fire occurs (S5)
In the switch input determination (S5) of FIG. 3, the microcomputer 12 determines the above-described switch input (S51). If there is no switch input, the microcomputer 12 ends the process.
(S6)
In the fire monitoring (S6) of FIG. 4, the microcomputer 12 determines whether or not a fire has occurred (S61), and if a fire has occurred, the above processing (S62), (S63), (S67) and (S68) is executed, the fire flag 13a is set (S62), the timer 14a is cleared for 5 minutes (S67), the fire sound stop flag 13b is cleared (S68), and the process is terminated.
(S7)
In the monitoring result output (S7) of FIG. 5, the fire flag 13a is set and the fire sound stop flag 13b is not set. At this stage, for example, it is assumed that the constant speed flag 13c is set. The microcomputer 12 executes processes (S71), (S72), (S73), and (S74), and outputs a fire sound output (constant speed) (S74). Here, if the low speed flag 13d is set, a fire sound output (low speed) is output (S76). If the super low speed flag 13e is set, a fire sound output (super low speed) is output (S77).

(B) When the audio output stop switch 8 is operated Here, the case where the audio output stop switch 8 is operated in a state where a fire has occurred will be described.
(S5)
In the switch input determination (S5) of FIG. 3, there is a switch input of the audio output stop switch 8, and the fire flag 13a is set. The microcomputer 12 executes the processes (S51), (S52), and (S53), and sets the fire sound stop flag 13b (S53).
(S6)
In the fire monitoring (S6) of FIG. 4, a fire has occurred, the fire flag 13a is set, the fire sound stop flag 13b is set, and the timer 14a has not started the timer count for 5 minutes. For this reason, the microcomputer 12 executes the above processes (S61), (S62), (S63), (S64), (S65) and (S66), sets the fire flag 13a (S62), and a timer for 5 minutes. The timer count 14a is started (S65).
(S7)
In the monitoring result output (S7) of FIG. 5, the fire flag 13a is set and the fire sound stop flag 13b is set. Therefore, the microcomputer 12 executes the processes (S71) and (S72) and ends the process. Therefore, when the sound output stop switch 8 is operated and the fire sound stop flag 13b is set, no fire sound is generated.

(C) Five minutes have elapsed after the voice output stop switch 8 is operated (S5).
In the switch input determination (S5) of FIG. 3, since there is no switch input of the audio output stop switch 8, the microcomputer 12 executes the process (S51) and ends the process.
(S6)
In the fire monitoring (S6) of FIG. 4, the presence or absence of a fire has occurred, the fire sound stop flag 13b is set, and the timer 14a is in the state of starting the timer count for 5 minutes. The microcomputer 12 executes the above processing (S61), (S62), (S63), (S64), (S66) to (S68), sets the fire flag 13a (S62), and clears the timer 14a for 5 minutes. Then, the fire sound stop flag 13b is cleared (S68).
(S7)
In the monitoring result output (S7) of FIG. 5, the fire flag 13a is set and the fire sound stop flag 13b is not set. After executing the processing (S71) and (S72), the microcomputer 12 performs processing (S73 to S77) according to any one of the constant speed flag 13c, the low speed flag 13d, and the super low speed flag 13e. And fire sound is output.

  As described above, in the present embodiment, when the fire detection unit 5 detects a fire, any one of the constant speed flag 13c, the low speed flag 13d, and the super low speed flag 13e is set at a reproduction speed corresponding to the set flag. Fire sound can be output from the speaker 11, and the user can arbitrarily change the sound reproduction speed by setting a flag that defines the reproduction speed. Although not described in detail, sound other than fire sound (inspection abnormality sound) or the like can be output from the speaker 11 at a reproduction speed corresponding to the set flag.

  Further, in the present embodiment, as an operation unit for adjusting the audio speed for setting any of the constant speed flag 13c, the low speed flag 13d, and the ultra low speed flag 13e, in order to stop the audio output by the audio output means. The operated sound output stop switch 8 is used, and the adjustment of the sound reproduction speed is realized with a simple configuration without increasing the number of parts.

  In the present embodiment, the audio data playback speed can be changed from the default to a predetermined playback speed in accordance with the operation time of the audio output stop switch 8, so that the user can change the audio output speed. The playback speed can be changed and changed arbitrarily in a plurality of stages.

  In this embodiment, when the audio output stop switch 8 is operated after the alarm device is turned on or in a state where no fire has occurred (the fire flag 13a is not set), the audio data Since the playback speed can be changed by switching to an arbitrary playback speed (constant speed, low speed, or ultra-low speed), the user can change the playback speed of the sound by switching to a plurality of stages.

  In the present embodiment, when the sound output stop switch 8 is operated and the flags (13c to 13e) are set with the fire flag 13a not set, the microcomputer 12 sets the flag ( 13c to 13e), the sound is output at the reproduction speed. Therefore, the user can easily check the reproduction sound when the reproduction speed of the audio data is switched.

  Further, in the present embodiment, by operating the audio output stop switch 8 (see S58), it is possible to return the audio data reproduction speed from the previously set reproduction speed to the default (constant speed). You can easily return the playback speed to the default.

  In the present embodiment, the sound reproduction speed can be changed not only when the power is turned on, but also after installation, as long as the fire flag 13a is not set.

  In the above description, an example in which the playback speed is decreased has been described. However, the present invention is similarly applied to a case in which the playback speed is increased.

  In the above description, an example has been described in which the playback speed of the audio data can be changed from the default to a predetermined playback speed in accordance with the operation time of the audio output stop switch 8. Depending on the number of operations of 8, the reproduction speed of the audio data may be changed by switching to a plurality of stages. For example, when it is operated once, twice, or three times within a predetermined time, it is switched to a low speed, an ultra-low speed, or a constant speed.

As for the operation of the audio output stop switch 8, the playback speed may be switched when a special operation is performed without switching the playback speed in the normal operation. In normal operation, the audio data may be reproduced based on the currently set reproduction speed. At this time, even in a special operation, as described above, after the reproduction speed is set to be switched, the audio data may be reproduced based on the currently set reproduction audio.
When switching the playback speed of the audio data according to the operation time of the audio output stop switch 8, the normal operation is, for example, a short press of the audio output stop switch 8 (N in S54 in FIG. 3). Is, for example, a long press of the audio output stop switch 8 (Y of S54 in FIG. 3, S58). Further, when the reproduction speed of the audio data is switched according to the number of operations of the audio output stop switch 8, the normal operation is, for example, a single operation within a predetermined time of the audio output stop switch 8, and the special operation is, for example, an audio The output stop switch 8 is operated a plurality of times within a predetermined time.

  In the above description, an example in which the playback speed is set to three levels has been described. However, the playback speed can be arbitrarily set as long as it is two or more levels.

  In the above description, the example in which the voice data memory 15 a is provided in the voice synthesis circuit 15 has been described. However, the voice data memory 15 a may be provided in the storage unit 13 of the microcomputer 12.

  In the flowchart of FIG. 3, when the audio output stop switch 8 is operated at the initial stage of power-on, the default (constant speed) is set to a predetermined reproduction speed (for example, low speed) after the process (S4). It may be set automatically.

  The control signals L1 to L3 sent from the microcomputer 12 to the speech synthesis circuit 15 are illustrated using an example using three control lines (see FIG. 1), but controlled by one signal line including the control signal Lm. A signal may be sent.

  Moreover, although the example of the fire alarm was demonstrated as an alarm device, it is applicable also to other alarm devices, such as a gas leak alarm device. Moreover, although the fire detection unit has been described as a fire alarm using a thermal type, it can also be applied to other fire detection units such as a smoke type.

  1 battery, 2 power monitoring circuit, 3 switch, 4 constant voltage circuit, 5 fire detection unit, 6 thermistor, 7 resistance, 8 audio output stop switch, 11 speaker, 12 microcomputer, 13 storage unit, 13a fire flag, 13b fire audio Stop flag, 13c constant speed flag, 13d low speed flag 13e ultra low speed flag, 14 timer unit, 14a 5 minute timer, 15 voice synthesis circuit 15a voice data memory, 16 switch, 100 fire alarm.

Claims (6)

An anomaly detection means for detecting an anomaly in the monitoring area;
Storage means for storing voice data for notifying that an abnormality has been detected in the monitoring area;
Audio output means for reproducing and outputting the audio data;
A reproduction speed setting means for setting a reproduction speed of the audio data by the audio output means based on an operation of the operation unit;
Control means for controlling the audio output means to reproduce the audio data based on the reproduction speed set by the reproduction speed setting means when the abnormality detection means detects an abnormality in the monitoring area;
An alarm device comprising:   2. The alarm device according to claim 1, wherein the operation unit uses a sound output stop switch operated to stop sound output by the sound output means.   3. The alarm device according to claim 2, wherein the reproduction speed setting means can change the reproduction speed of the audio data in a plurality of stages according to the operation time or the number of operations of the audio output stop switch.   The playback speed setting means switches the playback speed of the audio data from the default to a predetermined playback speed when the audio output stop switch is operated when the alarm device is turned on. 2. Alarm according to 2.   3. The control unit according to claim 2, wherein when the audio output stop switch is operated in a state where no abnormality is detected, audio data is reproduced at a reproduction speed set in the reproduction speed setting unit. 4. The alarm device according to any one of 4 above.   6. The playback speed setting means is capable of returning the playback speed of the audio data from the set playback speed to the default by operating the audio output stop switch. Alarm according to any one of the above.

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