JP2002042286A - Alarm device and method for determining operation of alarm device - Google Patents

Abstract

(57) [Summary] To provide an alarm device with an audio warning function capable of executing a self-test of an audio warning system even during the use period of the alarm device. SOLUTION: The alarm 1 has processing means (central control unit 21) for executing a self-test processing,
At the time of executing the self-test, predetermined self-test sound source data capable of driving the loudspeaker 10 at a known voltage is amplified and output to the loudspeaker, and the actual drive voltage of the loudspeaker is determined based on the known voltage. If the voltage does not fall within the predetermined voltage range set as described above, a notification indicating a failure of the voice warning means (voice warning unit 23) is performed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an alarm device and a method of determining the operation of an alarm device, and more particularly, to an alarm device which issues a warning by voice when an abnormal situation is detected and a method of determining the operation of the alarm device.

[0002]

2. Description of the Related Art Various types of alarms that detect various abnormal situations and issue a warning are used. Fire alarms and gas leak alarms are typical examples.The former uses a heat sensor or smoke sensor to detect a fire, issues a warning and prompts early fire extinguishing or evacuation, and the latter uses a gas sensor. To detect gas leaks and incomplete combustion of city gas and carbon monoxide (CO), and to close the main valve and promote ventilation to prevent explosion accidents and gas poisoning accidents.

[0003] Previously, the warning of such an alarm was simply an audible warning by a buzzer sound or an electronic sound.
In an environment where various alarms are installed, it is difficult to judge the meaning of the warning from the warning sound, and thus a visual warning by a lamp display is generally used together. According to this, the meaning of the warning (for example, a fire alarm, a gas leak alarm, etc.) is determined by looking around the surrounding alarm device in response to the warning sound and finding out the one where the warning lamp is lit (or blinking). You can judge.

[0004] However, such a warning method has a drawback that it is necessary to find out a lamp display that is lit or blinking and to judge its meaning, and it lacks quickness.

Therefore, in recent years, an alarm device with an audio warning function has been used. For example, by issuing an easy-to-understand voice alert such as "Fire" or "Gas leak", quick and appropriate measures can be taken when an abnormality occurs.

[0006] This type of alarm with a sound warning is provided by a holding means for holding the above-mentioned sound phrase ("fire,""gasleak," etc.) and a detection means for detecting a fire, gas leak, or the like. There is provided a selecting means for selecting the voice phrase based on the output, and an output means for vocalizing and outputting the voice phrase selected by the selecting means.

[0007]

However, in the above-mentioned alarm device with a sound warning function, the components (holding means, selection means and selecting means) are different from those of a warning device which issues a simple warning by a buzzer sound or an electronic sound. Output means), the number of parts increases, and the probability of failure increases. If any trouble occurs in the audio warning system such as the holding means, the selection means, or the output means, the alarm function is completely disabled. There is a problem that it cannot be fulfilled.

[0008] Incidentally, alarms, particularly fire alarms and gas leak alarms, etc., perform periodic inspections to determine the quality of their functions, but this method can determine only the function at the time of inspection. In addition, there is a drawback in that it is not possible to continuously inspect the quality of the function during the use period.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an alarm device with an audio alarm function that can execute a self-test of an audio alarm system even during use of the alarm device.

[0010]

According to the first aspect of the present invention,
In an alarm device including a sound warning device for outputting sound source data representing the content of the abnormal condition to a loudspeaker in response to a detection signal of the abnormal condition and performing a notification, the processing device has a processing unit for performing a self-test process, The processing means amplifies and outputs predetermined self-test sound source data capable of driving a loudspeaker with a known voltage to the loudspeaker when the self-test is performed, and sets the actual drive voltage of the loudspeaker to the known voltage. If the voltage does not fall within a predetermined voltage range set with reference to the voltage of (i), a notification indicating a failure of the voice warning means is performed.

According to the present invention, there are provided various alarm devices having a voice warning function, that is, voice warning means for amplifying and outputting sound source data representing the content of the abnormal situation to a loudspeaker in response to a detection signal of the abnormal situation to provide notification. In every equipped alarm,
Periodically or when operating a test switch or inputting a test signal from the outside, the loudspeaker is driven using predetermined self-test sound source data capable of driving the loudspeaker with a known voltage,
When the drive voltage is not within a predetermined voltage range set with reference to the known voltage, a notification indicating a failure of the audio warning unit is performed.

[0012] The invention according to claim 2 is a detecting means for detecting an abnormal situation such as a fire and / or a gas leak,
A warning means for amplifying and outputting sound source data representing the contents of the abnormal situation to a loudspeaker in response to an output signal of the detection means and performing a notification, wherein a processing means for executing a self-test process is provided. The processing means amplifies and outputs predetermined self-test sound source data capable of driving a loudspeaker with a known voltage to the loudspeaker at the time of executing the self-test, and the actual drive voltage of the loudspeaker is If the voltage does not fall within a predetermined voltage range set on the basis of the known voltage, a notification indicating a failure of the voice warning unit is performed.

According to the present invention, among various alarms having an audio warning function, in particular, in a fire alarm, a gas leak alarm or a combined fire / gas leak alarm, a predetermined self-service which can drive a loudspeaker at a known voltage. When the loudspeaker is driven using the test sound source data, and the drive voltage is not within a predetermined voltage range set with reference to the known voltage, a notification indicating a failure of the voice warning means. Is performed.

According to a third aspect of the present invention, in the first or second aspect of the present invention, there is provided storage means for storing the self-test tone generator data and the tone generator data in an individually readable manner. It is characterized by.

According to the present invention, when an abnormal situation such as a fire or a gas leak occurs, the sound source data indicating the content of the abnormal situation is read from the storage means, and when the self-test is executed, the self-test sound source data is read from the storage means.

According to a fourth aspect of the present invention, in the first or second aspect of the present invention, there is provided a generator for generating the self-test tone generator data.

According to the present invention, the self-test tone generator data is generated by the generating means during the execution of the self-test.

According to a fifth aspect of the present invention, in the first, second or fourth aspect of the present invention, the self-test sound source data is included in a sound pressure reproducible frequency range of the loudspeaker. In this case, a frequency that is not included is configured as a main frequency component.

According to the present invention, at the time of executing the self-test, the loudspeaker is driven by the self-test sound source data composed of main frequency components outside the reproducible frequency range of the loudspeaker.

According to a sixth aspect of the present invention, in response to an abnormal situation detection signal, the sound source data representing the content of the abnormal situation is amplified and output to a loudspeaker to notify the operation of the alarm device provided with a sound warning means. A method for amplifying and outputting predetermined self-test sound source data capable of driving a loudspeaker at a known voltage to the loudspeaker, and wherein an actual driving voltage of the loudspeaker is based on the known voltage. When the voltage is not within the set predetermined voltage range, a notification indicating a failure of the voice warning unit is performed.

According to the present invention, there are provided various alarm devices having a voice warning function, that is, voice warning means for amplifying and outputting, to a loudspeaker, sound source data representing the content of the abnormal situation in response to a detection signal of the abnormal situation, to provide notification. In every equipped alarm,
The loudspeaker is driven using predetermined self-test sound source data capable of driving the loudspeaker at a known voltage, and the driving voltage is within a predetermined voltage range set based on the known voltage. If not, a notification indicating a failure of the voice warning unit is issued.

[0022]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings, taking a combined alarm for detecting fire and gas leakage as an example.

First, the configuration will be described. FIG. 1 is an external view of an example of a compound alarm (hereinafter, simply referred to as “alarm”). The alarm 1 includes a case 2 having an arbitrary shape (a box shape in the figure, but not limited thereto) attachable to a wall or the like, a fire detection unit 3, a city gas detection unit 4, and a carbon monoxide detection unit. 5 as well as a power lamp 6 and various alarm lamps such as carbon monoxide (C
O) Alarm lamp (hereinafter referred to as "CO alarm lamp")
7, a city gas leak alarm lamp (hereinafter referred to as "gas leak alarm lamp") 8 and a fire alarm lamp 9 are mounted on an easily visible surface. A loudspeaker 10 for loudspeaking a warning at a high volume (generally, 70 dB / m or more) is incorporated. Although not particularly limited, the power lamp 6 is green,
The O alarm lamp 7 is yellow, and the gas leak alarm lamp 8 and the fire alarm lamp 9 are red.

FIG. 2 is a block diagram showing an electrical configuration of the alarm 1. The fire detection unit 3 detects a fire using a heat sensor, a smoke sensor, or the like, and outputs a fire detection signal. Sensor town gas etc. detection unit 4 for detecting a main component, such as a city gas or propane gas (e.g., S _n O ₂ semiconductor sensor) to detect the gas concentration in the atmosphere, the gas detection corresponding to the gas concentration Output a signal. The carbon monoxide detector 5 is C
The concentration of CO in the atmosphere is detected using an O sensor,
A CO detection signal corresponding to the concentration is output.

The central control unit 21 executes processing for determining an abnormal situation such as the occurrence of a fire or gas leak based on each of the detection signals described above, and executes a self-test processing described later. A signal corresponding to the result is generated and output to the lamp drive unit 22, the audio alarm unit 23, the first signal output unit, the second signal output unit 26, and the like.

The lamp driving unit 22 drives the above-mentioned lamps, that is, the power lamp 6, the CO alarm lamp 7, the gas leak alarm lamp 8, and the fire alarm lamp 9 according to a signal from the central control unit 21. The power lamp 6 continues to be lit green while the power is on, and the other lamps (CO alarm lamp 7, gas leak alarm lamp 8 and fire alarm lamp 9) are in a required mode when an abnormal situation such as fire or gas leak occurs. Lights or flashes with. In the present embodiment, as will be described later, the power lamp 6 also serves as a means for displaying the self-test result of the voice warning system. If the self-test result is unsuccessful, the power lamp 6 is turned off. It flashes and notifies you.

When an abnormal situation such as a fire or gas leak occurs, the voice alarm unit 23 generates a required warning voice signal in accordance with an output signal from the central control unit 21, and adds this warning voice signal to a loudspeaker to output a loudspeaker. The details will be described later. The drive voltage detector 24 detects the drive voltage of the loudspeaker 10 and outputs the detected drive voltage to the central controller 21. The details will be described later.

The first signal output section 25 and the second signal output section 26 are optional sections for externally outputting a fire alarm signal and a gas leak alarm signal, respectively. This is a part that generates and outputs a monitoring signal required for a monitoring panel (fire monitoring panel or gas leak monitoring panel) that performs monitoring. Finally, the power supply unit 27 is a unit that generates an internal power supply necessary for the operation of each unit from the commercial power supply.

FIG. 3 is an internal block diagram of the central control unit 21. The central control unit 21 includes a CPU 31, a ROM 32,
It has a RAM 33, an input port 34, an output port 35, and the like. , The control program stored in the ROM is developed in the RAM 33 and executed, and a signal corresponding to the execution result is output via the output port 35 to each unit (the lamp driving unit 22, the sound alarm unit 23, the first signal output unit 25, The signal is output to the second signal output unit 26).

FIG. 4 is a block diagram showing an electrical configuration of the voice alarm unit 23 and the drive voltage detection unit 24. The voice alarm unit 23 includes a memory control unit 41, an amplification unit 42, and a sound source data memory 43.
Is selected from various voice phrases stored in the loudspeaker 10, and the selected voice phrase is amplified by the amplifier 42 and output to the loudspeaker 10.

FIG. 5 is a conceptual diagram of the data structure of the sound source data memory 43. In this figure, one data row is composed of a number column 62 and a sound source data column 63, and required speech phrase data is stored in advance in each number. For example, the number [01] stores "PIP_fire alarm has been activated_please check" (the underscore symbol indicates a silent section; the same applies hereinafter), and the number [02] stores "PIP "Pip-pip-gas is leaking?" Is stored, and by designating a desired number from the memory control unit 41, the sound source data of that number line is read. Here, the number [9
9] stores predetermined self-test sound source data. It is found that the self-test sound source data generates a known voltage at the output terminal of the amplifying unit 42, that is, at the input terminal of the loudspeaker 10. Predetermined sound source data. For example, if the potential level of the self-test sound source data is Eo [V] and the amplification degree of the amplifier 42 is A,
At the input end of the loudspeaker 10, approximately Eo × A [V]
The sound source data is known to produce a certain voltage.

On the other hand, the driving voltage detecting section 24 is composed of a diode element 51 for preventing backflow, an integrating circuit 52, an analog / digital (A / D) converting circuit 55, and the like, and detects the voltage at the input terminal of the loudspeaker 10. The voltage is time-integrated by the resistance element 54 and the capacitance element 53 of the integration circuit 52 via the diode element 51 and is A / D converted and output to the central control unit 21.

Next, the operation will be described. FIG. 6 is a schematic flowchart of a control program executed by the central control unit 21. This flowchart starts when the power of the alarm device 1 is turned on, and the fire determination process (step S
1) Gas leak / incomplete combustion determination processing (step S
2), a lamp lighting process (step S3), a voice alarm process (step S4), and a voice alarm self-test process (step S5) are sequentially performed, and this operation is repeated until the power is turned off. Although FIG. 6 is a flowchart in the case of performing a periodic self-test, it is not always necessary to perform the self-test periodically. When the test switch attached to the alarm device 1 is operated, or when an external (for example, receiving The self-test may be performed when a test signal is input (from a machine or a test jig).

Each process will be described specifically. <Fire Determination Processing> In the fire determination processing of step S1, the occurrence of a fire is determined based on a signal from the fire detection unit 3, and if a fire is detected, the flag A is turned on.

<Gas Leak / Incomplete Combustion Determination Process> In the gas leak / incomplete combustion decision process of step S2, the gas leakage concentration or non-combustion is determined based on signals from the city gas etc. detecting unit 4 and the carbon monoxide detecting unit 5. The complete combustion concentration (CO concentration) is determined stepwise, and the flags B to E are turned on according to the results of each determination.

Here, although not particularly limited, the determination of the gas leakage concentration or the incomplete combustion concentration is performed in each of two stages. For example, the gas leakage concentration is about 1/100 or more of the lower explosive limit concentration. About 1/4 of lower explosive limit concentration
The following two steps, and the CO concentration was low (5
(0 to 550 ppm or less) and high concentration (550 ppm or less). In each case, the former is referred to as the first stage and the latter as the second stage. The concentration of the second stage is higher than that of the first stage, and the degree of danger such as explosion or poisoning is higher.

The flag B is turned on when the gas leakage concentration is at the first stage, and the flag C is turned on when the gas leakage concentration is at the second stage. The flag D is turned on when the CO concentration is at the first stage, and the flag E is turned on when the CO concentration is at the second stage. Therefore, if none of the flags B to E is turned on, the gas leakage concentration and the CO concentration become the specified values (1
It is understood that the normal state is not satisfied, and if any one of the flags B to E is turned on, it is understood that the density state corresponds to the flag.

<Lamp lighting process> FIG.
It is a figure which shows the flowchart of a lamp lighting process. In this process, the contents of the flags A to E are inspected, and the display mode of each lamp is controlled in the following order according to the turning on of each flag. (1) When the flag A is on (step S11)
The fire alarm lamp 9 is turned on (step S12). (2) When the flag B is on (step S13)
The gas leak alarm lamp 8 is turned on (step S1).
4). (3) When the flag C is on (step S15)
The gas leak alarm lamp 8 is turned on and off (step S1).
6). (4) If the flag D is on (step S17)
The CO alarm lamp 7 is turned on (step S18). (5) When the flag E is on (step S19)
The CO alarm lamp 7 "flashes" (step S20).

In this order, the lamp alarm control for fire alarm is prioritized over the gas leak. In the lamp alarm control for gas leak, the first stage (low concentration) and the second stage (high concentration) are simultaneously performed. This is based on the idea that "flashing" control can be reliably performed at the time of determination. In particular, in the lamp notification control of gas leakage, by performing the notification of the second stage in the reverse order, if both the flag B and the flag C (or the flag D and the flag E) are on (the first stage) And at the same time in the second step), the display mode of the corresponding alarm lamp is surely set to “blink”.

<Sound Alarm Processing> FIG. 8 is a flowchart showing the sound alarm processing in step S4. In this processing, first, it is determined whether or not any one or more of the flags A to E is on (step S21). If the determination result is "NO", the flow is terminated as it is, while the determination result is If “YES”, the process proceeds to the sound source data selection step (step S22).

In this selection step, an appropriate sound source data number (see FIG. 5) is selected in accordance with a combination of ON of the flags A to E. The table in the selection step schematically shows a preferable selection rule, and a black circle indicates that the flag is turned on. For example, if only the flag A is on, the number [01] is selected. If the flag B or the flag C is on, the number [02] is selected, and the flag D
Or, if the flag E is on, select the number [03],
If the flag A and the flag B (or the flag C) are on, the number [01] is selected. If the flag B (or flag C) and the flag D (or flag E) are on, the number [02/03] is selected, and the flag A, the flag B (or flag C) and the flag D (or flag E) are selected. Is ON, the number [04] is selected. In addition, the number [02 /
03] means that sound source data of respective numbers ([02] and [03]) are alternately selected.

When the number of the sound source data is selected in this manner, finally, a signal indicating the selected number is generated and output to the voice alarm unit 23 (step 23), and the flow ends.

According to the above-described fire determination processing, gas leak / incomplete combustion determination processing, lamp lighting processing, and voice alarm processing, when a fire is determined, the flag A is turned on. , The fire alarm lamp 9 is turned on, and sound source data suitable for the occurrence of a fire can be selected by voice alarm processing.

When a gas leak is determined, the flag B or the flag C is turned on in accordance with the gas leak concentration, and
In the lamp lighting process, the gas leak warning lamp 8 is lit or blinked based on the turning on of the flag B or the flag C,
In addition, sound source data suitable for gas leakage can be selected in the sound alarm processing.

Further, when incomplete combustion is determined, the C
Turn on the flag D or the flag E according to the O concentration,
In the lamp lighting process, the CO alarm lamp 7 is lit or blinked based on the turning on of the flag D or the flag E, and sound source data suitable for incomplete combustion can be selected in the voice alarm process.

Therefore, it is possible to realize a combined alarm device that issues an alarm for both a fire and a gas leak (incomplete combustion). In addition, the contents of the alarm are notified to the surroundings in an easy-to-understand manner using a lamp display mode and sound. can do.

<Sound Alarm Self-Test Processing> FIG. 9 is a flowchart showing the sound alarm self-test processing in step S5. In this process, first, the flags A to E
It is determined whether any one or more is ON (step S24). If the determination result is "YES", that is, if a fire or gas leak determination has been made, the flow is terminated as it is. If the determination result is "NO", the following steps S26 to S30 are executed.

First, in step S26, the number of the tone data for self-test

[99] is output, and then step S
At 27, the loudspeaker drive voltage value is read. The loudspeaker drive voltage value is an output voltage from the drive voltage detection unit 24. In the next step S28, it is determined whether or not the loudspeaker drive voltage value falls within a predetermined reference range. When no trouble occurs in each component of the voice alarm unit 23, the loudspeaker 1 using the self-test sound source data is used.
0 according to the above example, Eo × A
[V].

Now, the above reference range is set to Eo × A ± α [V].
If (α is a margin), the drive voltage (Eo × A [V]) always falls within the reference range during the normal operation of the voice alarm system, and the determination result in step S28 is always “YES”. On the other hand, when any trouble occurs in each component of the voice alarm unit 23, for example, when the amplification of the amplifying unit 42 becomes 0, the loudspeaker 10
Is not driven, and the drive voltage becomes almost 0 [V]. If the above margin is set appropriately, the loudspeaker drive voltage value will fall outside the reference range when such a trouble occurs. Then, the determination result in step S28 becomes "NO", and a predetermined self-test failure notification (flashing display of the power lamp 6 in the present embodiment) can be performed in step S29, and a trouble occurs in the audio warning system. You can let others know what you are doing.

As shown in step S30, the self-test failure notification may be output to an external device via the first signal output unit 25 or the second signal output unit 26.

As described above, according to the present embodiment, during the power-on period of the alarm device 1, continuously (actually, at every repetition cycle of the control program in FIG. (When an external test signal is input)
A voice alarm self-test process is executed, and in this process, the loudspeaker 1 uses predetermined self-test sound source data.
0 is actually driven (preferably, from the viewpoint of confirming the execution of the self-test, it is preferable to drive the loudspeaker for a short period of time so that sound can be faintly heard). If the loudspeaker driving voltage value is not within the predetermined reference range as detected at 24, for example, the power lamp 6 is switched to a display mode different from usual (lighting to blinking), and a voice warning system Can inform you of trouble. Therefore, it is possible to perform a required repair request and the like, and the special effect that the alarm device 1 can always be maintained in the normal operation state can be obtained.

The sound source data for the self-test is basically required to generate a known voltage in advance at the input terminal of the loudspeaker 10. However, an unnecessary sound is output from the loudspeaker 10 during the self-test. To avoid this, it is more preferable that no sound is produced when a self-test is performed periodically, as shown in FIG.
For example, self-test sound source data may be configured using frequencies (FL, FH) outside the sound pressure reproducible frequency range of the low frequency range and the high frequency range where the sound pressure cannot be reproduced. I just need.

Here, the sound pressure reproducible frequency range and the sound pressure reproducible frequency range are defined. The loudspeaker 10 is classified into an electromagnetic type, an electrostatic type, a piezoelectric type, and the like according to a driving method, but they are common in that they are conversion devices that generate sound pressure by converting an electric signal into air vibration. . In such a conversion device, although the relationship between the electric signal and the sound pressure almost corresponds in the audible frequency range, no sound pressure is generated in the lower and higher frequency ranges, or almost no sound pressure is generated in the ear. Usually, only inaudible levels of sound pressure are produced. However, some high-end loudspeakers have sound pressure characteristics exceeding the audible frequency range, but are generally ignored because they are not employed in alarms in terms of cost.

Therefore, in most popular loudspeakers, for example, the frequency range below or above the audible frequency range can be said to be a frequency range where sound pressure reproduction is not possible. Such a frequency range,
In this specification, a sound pressure reproducible frequency range that is not referred to as a "sound pressure reproducible frequency range" and a sound pressure reproducible frequency range that does not fall under this range is referred to as a "sound pressure reproducible frequency range".

Note that the loudspeaker 10 in the above embodiment is used.
Is an example of an electromagnetic type in which a diaphragm (also referred to as a cone) is shaken by an electromagnetic coil to generate sound pressure, as understood from the description of the drawings, but is not limited to this. For example, as described above, an electrostatic type or a piezoelectric type may be used. Any “type”
Even if it is, it will not change that it is driven by voltage.

Further, it is possible to eliminate the need for the integration circuit 52 from the drive voltage detector 24 in the above embodiment.
In this case, the sampling points of the A / D conversion circuit 55 may be increased, and the central control unit 21 may calculate the integrated value or the average value of each sampling voltage. However, in this case, the processing load on the central control unit 21 increases. Therefore, it is only necessary to determine which should be adopted in comparison with the cost merit associated with the elimination of the integration circuit 52.

Further, in the above-described embodiment, the self-test sound source data is stored in the sound source data memory 43 in advance, but the idea of the present invention is not limited to such an embodiment. The point is that the loudspeaker 10
As long as the loudspeaker 10 can be driven using predetermined sound source data capable of generating a known drive voltage at the input terminal of the loudspeaker, for example, the loudspeaker 10 may be modified as shown in FIG.

In FIG. 11, a modified voice alarm unit 2 is shown.
3a includes a generation unit 44 and a selection unit 45, and the generation unit 44, for example, outputs a specific frequency (FL or F in FIG. 9).
H), and the selecting means 45 selects the output of the generating means 44 and inputs it to the amplifying section 42 instead of the output from the memory control section 41 at the time of executing the self-test.

According to this, at the time of executing the self-test, the signal of the specific frequency generated by the generating means 44 can be input to the amplifying section 42 as the self-test sound source data. Self test)
It can be performed. Moreover, in this modification, since the sound source data memory 43 does not need to be modified, the self-test function can be incorporated even if the sound source data memory 43 has no free space, and the existing voice warning function is provided. The advantage that it can be easily applied to an alarm device is obtained.

Lastly, the above description has described an example of application to an alarm device such as a fire or a gas leak, but the concept of the present invention is not limited to these specific alarm devices. It can also be applied to other equipment with an audio warning function, such as a receiver, a home information panel or an emergency broadcast equipment, or more broadly, an audio warning function installed on ships, aircraft, vehicles, etc. The present invention can also be applied to various alarms provided with a voice alarm function, or various alarms having an audio warning function mounted on or externally attached to industrial equipment, consumer equipment, home appliances, and the like.

[0061]

According to the first or sixth aspect of the present invention, various alarm devices with a voice warning function, that is, sound source data representing the contents of the abnormal situation in response to the abnormal situation detection signal are loudspeaked. In any alarm device provided with a sound warning means for amplifying and outputting to a device, a loudspeaker is driven using predetermined self-test sound source data capable of driving a loudspeaker with a known voltage, and the driving voltage is If the voltage does not fall within a predetermined voltage range set based on the known voltage, a notification indicating a failure of the voice warning unit is issued.

Therefore, the self-test of the voice warning means can be executed for various alarm devices with a voice warning function in general, and the malfunction of the voice warning means is promptly notified to urge the user to take measures. It is possible to issue a sound alert when the error occurs.

According to the second aspect of the present invention, the loudspeaker is operated at a known voltage, particularly in a fire alarm, a gas leak alarm or a combined fire / gas leak alarm among various alarms having an audio warning function. The loudspeaker is driven using predetermined self-test sound source data that can be driven, and the driving voltage is
If the voltage does not fall within a predetermined voltage range set based on the known voltage, a notification indicating a failure of the voice warning unit is issued.

Therefore, among various alarms having an audio alarm function, a self-test of the audio alarm means can be executed, particularly for a fire alarm, a gas leak alarm or a combined fire / gas leak alarm. It is possible to promptly notify the malfunction of the voice warning means and prompt the user to cope with the problem, and thereafter to perform a voice warning when an abnormal situation occurs without any trouble.

According to the third aspect of the present invention, when an abnormal situation such as a fire or a gas leak occurs, the sound source data indicating the content of the abnormal situation is read from the storage means, and when the self-test is performed, the sound source data for the self-test is read from the storage means. The sound source data is read. Therefore, it is possible to freely read out the abnormal situation notification sound source data and read out the self-test sound source data.

According to the fourth aspect of the present invention, the self-test tone generator data is generated by the generation means during the execution of the self-test. Therefore, it is only necessary to add the generation means to the existing various alarms with the voice warning function, and to modify the output of this generation means to be used at the time of executing the self-test. Performance can be improved.

According to the fifth aspect of the present invention, at the time of executing the self-test, the loudspeaker is driven by the self-test sound source data composed of main frequency components outside the reproducible frequency range of the loudspeaker. . Therefore, an unpleasant test sound is not output from the loudspeaker during the execution of the self-test, and the quietness can be improved.

[Brief description of the drawings]

FIG. 1 is an external view of an example of a compound alarm (alarm 1).

FIG. 2 is a block diagram showing an electrical configuration of the alarm device 1;

FIG. 3 is an internal block diagram of a central control unit 21.

FIG. 4 is a block diagram showing an electrical configuration of a voice alarm unit 23 and a drive voltage detection unit 24.

FIG. 5 is a conceptual diagram of a data structure of a sound source data memory 43.

FIG. 6 is a schematic flowchart of a control program executed by a central control unit 21.

FIG. 7 is a diagram showing a flowchart of a lamp lighting process in step S3.

FIG. 8 is a diagram showing a flowchart of a voice alarm process in step S4.

FIG. 9 is a diagram showing a flowchart of a voice alarm self-test process in step S5.

FIG. 10 is a diagram showing a sound pressure reproducible frequency range and a sound pressure non-reproducible frequency range of the loudspeaker 10;

FIG. 11 is a block diagram of a modified voice alarm unit 23a.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Alarm 3 Fire detection part (detection means) 4 City gas etc. detection part (detection means) 5 Carbon monoxide detection part (detection means) 10 Loudspeaker 23 Voice warning part (voice warning means) 21 Central control part (processing means) 43) sound source data memory (storage means) 44 generating means

Claims (6)

[Claims] 1. A process in which a self-test process is performed in an alarm device provided with an audio warning means for outputting sound source data indicating the content of the abnormal condition to a loudspeaker in response to a detection signal of the abnormal condition and notifying the speaker of the loudspeaker. Means for amplifying and outputting predetermined self-test sound source data capable of driving a loudspeaker with a known voltage to the loudspeaker when the self-test is performed, and for actually driving the loudspeaker When the voltage is not within a predetermined voltage range set on the basis of the known voltage, an alarm indicating a failure of the voice warning unit is performed. 2. A detecting means for detecting an abnormal situation such as a fire and / or a gas leak, and amplifying and outputting sound source data representing the contents of the abnormal situation to a loudspeaker in response to an output signal of the detecting means, and issuing a notification. And a voice warning means for performing a self-test process, the processing device comprising: a predetermined self-test capable of driving a loudspeaker with a known voltage when the self-test is performed. Sound source data is amplified and output to the loudspeaker, and when the actual drive voltage of the loudspeaker is not within a predetermined voltage range set based on the known voltage, An alarm device that issues a notification indicating a failure. 3. The alarm device according to claim 1, further comprising storage means for storing the self-test sound source data and the sound source data in an individually readable manner. 4. The alarm device according to claim 1, further comprising a generation unit configured to generate the self-test sound source data. 5. The self-test sound source data includes a frequency not included in a sound pressure reproducible frequency range of the loudspeaker as a main frequency component. Alternatively, the alarm device according to claim 4. 6. A method for judging the operation of an alarm device provided with a sound alarm means for outputting sound source data representing the content of the abnormal condition to a loudspeaker in response to a detection signal of the abnormal condition to notify the speaker of the abnormal condition. Amplifying and outputting predetermined self-test sound source data capable of driving the loudspeaker with the voltage of the loudspeaker to the loudspeaker, and setting the actual drive voltage of the loudspeaker to a predetermined voltage set on the basis of the known voltage. A method for judging the operation of an alarm device, wherein when the value is not within the range, a notification indicating a failure of the voice alarm means is performed.