JP2003067855A - Disaster prevention receiver - Google Patents

Abstract

PROBLEM TO BE SOLVED: To preferentially ring with respect to a critical event such as a fire and gas leakage and also to reduce cost by simplifying a system about an alarm. SOLUTION: This disaster prevention receiver 10 provided with a speaker 17 for ringing alarm configured with prescribed contents corresponding to various events as one cycle is provided with a level showing a priority in accordance with event significance about various alarms. In the case an event occurs which is a factor of an alarm at a higher level during ringing of an alarm of a certain level, a ringing alarm at a low level is immediately stopped, and the alarm of the higher level is made to ring. In the case an alarm of a higher level rings at the same time when an event to be a factor of a certain level occurs, and if an event to be a factor of the alarm of a high level is restored, switching is made to the alarm of the low level after a cycle that rings when the event is restored.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disaster prevention receiver, and more particularly to an alarm for the disaster prevention receiver.

[0002]

2. Description of the Related Art In a disaster prevention receiver that manages a disaster prevention system, when an abnormal situation such as a fire occurs in a disaster prevention area, a signal corresponding to the content is input. The disaster prevention receiver is provided with an audio device, and when a signal corresponding to an event is received, various alarms are sounded from the audio device. In a conventional disaster prevention receiver, for example, an audio device that sounds an alarm sound such as a fire, an audio device that sounds a gas leak alarm sound, and an audio device that sounds a failure alarm sound are separately provided. Each has a different alarm sound. In this way, by changing the alarm sound for each type of event, it was possible to know what kind of abnormality occurred. In addition, a sound device that emits a voice message was also installed, and it was possible to know the specific details of the abnormality that caused the alarm sound.
In this specification, an alarm sound and a voice message are collectively referred to as an alarm.

[0003]

However, as described above, in addition to the provision of a plurality of audio devices for sounding an alarm sound, an audio device for notifying a voice message is also provided, so that the control is complicated. It was also a factor of cost increase. In addition, when a plurality of events are input, different alarm sounds may sound at the same time, and the alarm sounds may overlap, making it difficult to hear. Furthermore, in the case of an audio device that emits a voice message, it was configured to emit voices in the order in which signals were input to the disaster prevention receiver, so if multiple events occur, it is possible to delay the alarm for important events such as fire. There was a nature. In addition, when an alarm is issued, a person who notices this will operate the sound stop switch for stopping the alarm, but the position of the switch may be difficult to understand unless a person who is familiar with it, There was a possibility of accidentally operating another switch.

An object of the present invention is to give priority to a serious event such as a fire or a gas leak and sound and inform in an easy-to-understand manner, and to simplify the alarm system to reduce the cost. Furthermore, when an alarm occurs, it is necessary to stop without fail.

[0005]

In order to solve the above problems, the invention according to claim 1 is provided in a disaster prevention system as shown in, for example, FIG. 2, FIG. 3 and FIG. In the disaster prevention receiver that receives various event information that occurs, when the event information is received, one sound device (sound unit 33) that sounds an alarm configured with a predetermined content according to the event as one cycle is provided. Is provided with a level indicating priority according to the importance of the corresponding event.

According to the first aspect of the invention, there is only one acoustic device for issuing an alarm, and the hardware configuration of the system can be simplified and the cost can be reduced. Also,
Since there is only one audio device, it is unlikely that the alarm sounds will be duplicated and difficult to hear. Also, although there is only one audio device, instead of providing various alarms with a level indicating the priority according to the importance of the event, the alarm having a relatively high priority is set to a low level. The alarm can be given priority over the alarm, and safety as a disaster prevention receiver is secured. Here, "a level that indicates the priority according to the importance of an event" means, for example, a warning of a serious event directly related to human safety such as a fire or a gas leak is a high level, and the safety such as a failure is directly affected. The alarm of the event that does not occur may be set to a low level. Also,
Although there is an "alarm consisting of a predetermined content according to the event as one cycle", it may be repeated depending on the ringing time of the alarm. If it is stopped due to this, it may not be repeated.

According to a second aspect of the present invention, in the disaster prevention receiver according to the first aspect, when a plurality of types of events occur at the same time, if the alarms corresponding to these events are at the same level, these alarms are activated. It is characterized in that the sounds are mixed for each cycle unit. According to the second aspect of the present invention, if the alarms have the same level, a plurality of types of alarms are mixed for each cycle and sounded, so that a plurality of types of events have occurred even if there is only one audio device. This makes it possible to give a sufficiently easy-to-understand notification. Specifically, when two types of events occur, the respective alarms are alternately repeated for one cycle.

According to a third aspect of the present invention, in the disaster prevention receiver according to the first or second aspect, when a plurality of types of events occur simultaneously, if the alarms corresponding to these events are at different levels, these The feature is that alarms are not mixed and sounded. According to the invention described in claim 3, since the alarms of different levels are not sounded in a mixed manner, the listeners may be confused by the alarms of different levels, that is, different importance levels being similarly notified. It is possible to reliably recognize the content of the alarm.

According to a fourth aspect of the present invention, in the disaster prevention receiver according to any of the first to third aspects, an event causing a higher level alarm occurs while an alarm of a certain level is ringing. In this case, the low level alarm that is sounding is immediately stopped, and the high level alarm is sounded. According to the invention described in claim 4, when a serious event occurs while the low level alarm is sounding, the low level alarm is immediately stopped and the high level alarm is sounded. It is highly safe because you can immediately know the high alarm.

According to a fifth aspect of the present invention, in the disaster prevention receiver according to any one of the first to fourth aspects, at the same time as an event causing a certain level of alarm occurs, a higher level alarm is generated. If the event causing the high level alarm is recovered while ringing, the low level alarm is switched to after the end of the ringing cycle at the time of recovery. According to the invention of claim 5, when switching from the high level to the low level alarm, the low level alarm is switched after the completion of one cycle of the high level, so that a feeling of strangeness such that the content of the alarm is suddenly switched is felt. There is no.

According to a sixth aspect of the present invention, in the disaster prevention receiver according to any of the first to fifth aspects, one cycle of the alarm consists of an alarm sound and a voice, and the alarm includes both the alarm sound and the voice. It is characterized in that it is generated based on a digital data file containing data. According to the invention of claim 6, since the alarm is generated based on the digital data file, as compared with the case of using a recorded voice, for example,
The system configuration can be simplified and the alarm content can be easily changed.

According to a seventh aspect of the present invention, in the disaster prevention receiver according to any of the first to sixth aspects, an alarm from an audio device is immediately stopped, and a light emitting unit that emits light while the alarm sounds is provided. It is characterized in that an acoustic stop switch is provided. According to the invention described in claim 7, since the light emitting portion of the sound stop switch is caused to emit light while the alarm is sounding, anyone can easily understand the position of the switch to be operated even in an emergency situation in which the alarm is issued, and panic. It can respond without fail.

According to an eighth aspect of the present invention, in the disaster prevention receiver according to the seventh aspect, a maintenance switch (26) for stopping sounding of an alarm by an audio device at the time of maintenance and inspection is provided, and the maintenance switch is operated. Then, the light emitting portion of the sound stop switch emits light. According to the invention described in claim 8, since the sound stop switch is configured to emit light when the maintenance switch is operated, it is surely recognized that the maintenance state and the state where the alarm is not sounded completely. . This is especially useful when the maintenance switch is installed in an unclear place such as inside the housing. In the seventh and eighth aspects, the light emission of the light emitting portion is, for example, lighting or blinking. In the invention of the eighth aspect, the light emitting state may be changed while the alarm is sounding and the maintenance switch is operated.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows the configuration of a disaster prevention system 1 provided with a disaster prevention receiver 10 as an example of the disaster prevention receiver of the present invention. Disaster prevention system 1
Is mainly composed of the disaster prevention receiver 10, relays 40, 40 connected to the disaster prevention receiver 10 via a line L, and a large number of terminals connected to each of the two relays 40. Have. The repeaters 40, 40 are, for example, 1
One is installed in each district such as a floor.

The terminals are fire detectors 41, 41, 4
1, ... Gas leak detectors 42, 42, 42 ..., Fire door 4
3, 43, 43 ..., and the dampers 44, 44, 44. A predetermined signal is output to the disaster prevention receiver 10 via the repeater 40 according to the operation of these terminals. For example, if the fire detector 41 detects a fire, a fire detection signal and a gas leak detector 42 cause a gas leak. A gas leak detection signal is output when the above is detected, and an operation signal is output when the fire door 43 or the damper 44 is operated. The fire detectors 41, 41 ...
It may be an OFF-type sensor or an analog sensor, but in the case of an analog sensor, a fire warning signal is first transmitted, and if a fire is detected, a fire detection signal is output. It is supposed to do. Note that the number of repeaters and the types and numbers of terminals that make up the disaster prevention system 1 are not limited to those shown in FIG.

FIG. 2 shows the appearance of the disaster prevention receiver 10, and FIG.
The control circuit 20 of the disaster prevention receiver 10 is shown in FIG. The disaster prevention receiver 10 monitors the occurrence of fire in each district via the line L,
When an event occurs, an alarm is displayed and sounded, and smoke-proof and exhaust equipment such as the fire door 43 and the damper 44 are controlled and driven. An operation panel 10a for various operations and displays is provided on the front of the disaster prevention receiver 10. The operation panel 10a includes a display screen 11 and a plurality of L
An indicator light group 12 including an ED (light emitting diode), a switch group 13 including various switches, and a printer 16
And a speaker 17. The display screen 11 is composed of a liquid crystal display panel and appropriately displays the occurrence of events and past records of the disaster prevention receiver 10 and the disaster prevention system 1. The display screen 11 also functions as a touch panel type switch. The indicator lamp group 12 informs the state of the disaster prevention receiver 10 and the occurrence of an event for each district, and is lit / blinking according to the state and the event.

The switch group 13 is provided with various switches, such as the acoustic stop switch 14 and the recovery switch 1.
5 is included. The sound stop switch 14 is a non-locking type switch surrounded by a transparent protective cover, and when the switch is operated, the alarm stops immediately. As will be described later, even if an event that causes an alarm occurs, the alarm may not sound depending on the situation, but the sound stop switch 1
The effect of stopping according to 4 also extends to events where the alarm is not sounding. LE is installed inside the sound stop switch 14.
A D (light emitting portion) 14a is provided, and the lighting / blinking of the LED 14a can be easily seen through the transparent protective cover. The LED 14a flashes while the alarm from the speaker 17 is ringing. When the sound stop switch 14 is operated while the alarm is sounding, or when the event causing the alarm is restored, the sounding is stopped and the LED 14a is turned off.

The entire operation panel 10a is openable and closable (closed in FIG. 2), and a maintenance switch 26 is provided inside when opened. The maintenance switch 26 is a lock type switch, and when the maintenance switch 26 is operated, the entire disaster prevention system 1 enters a maintenance / inspection state, and no alarm is sounded from the speaker 17. With the maintenance switch 26,
When the sound is stopped, the sound stop switch 14
The LED 14a therein is turned on. In addition,
When the maintenance switch 26 is ON, the operation of the acoustic stop switch 14 is invalid.

The control circuit 20 includes a CPU (Central Proc
The CPU 21 is provided with a RAM (Random Access Memory) 22 and a ROM (Read).
Only Memory) 23 is connected. A control program and setting data for various processes in the disaster prevention receiver 10 are written in the ROM 23, and operation data used in various processes are written in the RAM 22 and are used as a working area. CPU21
Is connected to the line L via the interface 24 and receives various signals such as a fire signal and a gas leak detection signal from the repeater 40 in each district. Further, the maintenance switch 26 is connected to the CPU 21 through the interface 25, and when the maintenance switch 26 is operated, the CPU 2
1 completely stops the alarm ringing via the sound section 33. Further, an operation unit 32 is connected to the CPU 21 via an interface 28. The operation unit 32 is composed of the switch group 13 and a touch panel type switch in the display screen 11, and when these switches are operated, a predetermined signal is input to the CPU 21.

The CPU 21 receives a signal input through the operation unit 32, the maintenance switch 26, or the line L,
According to the control program in the ROM 23, various processing in the disaster prevention receiver 10 is executed while using the data in the RAM 22. For example, the CPU 21 controls the display unit 31, the sound unit 33, and the printing unit 34, which are connected via the interfaces 27, 29, and 30, respectively, to perform a predetermined operation. That is, under the control of the CPU 21,
The display unit 31 displays predetermined contents on the display screen 11, and causes each LED of the display lamp group 12 to blink / light appropriately. The printing unit 34 is controlled by the control signal from the CPU 21.
The predetermined content is printed on the printer 16.

The sound section 33 sounds a warning of a predetermined content or stops the sounding according to a signal from the CPU 21. As shown in FIG. 4, the sound section 33 includes a speaker 17, an amplifier 36, and a D / A conversion section 37. Further, in the RAM 22, a plurality of contents of each alarm issued from the speaker 17 are written as digital data (hereinafter, alarm data). As shown in the table of FIG. 5, this alarm data is composed of alarm sounds and voice messages, and different alarm sounds and voice messages are set according to the level and type of alarm. These alarm sounds and voice messages are stored in RAM 22 in ADPCM.
(Adaptive differential pulse code modulation) stored as voice data, CPU when alarm sounds
It is thawed by 21.

When the CPU 21 receives the event information via the line L, the CPU 21 selects predetermined alarm data from the data in the RAM 22 according to the content of the event and sends the alarm data to the sound section 33. The sound section 33 converts the input alarm data from a digital signal into an analog signal in the D / A conversion section 37, amplifies the analog signal in the amplifier 36, and causes the speaker 17 to sound as an alarm. The alarm issued from the speaker 17 is configured by repeating the alarm sound and the voice message shown in FIG. 5 as one cycle.

As described above, in the disaster prevention receiver 10, one speaker 17 issues an alarm. Therefore, in order to effectively sound various types of alarms from one speaker 17, the alarms are classified into levels according to the importance of the event that causes the alarm, and the priority order is determined. In FIG. 5, the level division is illustrated together with the alarm content. Here, three types of level 1, level 2, and level 3 are set in descending order of priority.

The highest priority level 1 is a sensor alarm issued by the first fire detection signal from the fire detectors 41, 41 ..., A second alarm from the same fire detector 41. Fire confirmation alarm issued in response to eye fire detection signal,
, And three types of gas leak alarms issued in response to gas leak detection signals from the gas leak detectors 42, 42 ...
As the level 2, when the fire sensor 41 is an analog sensor, a warning warning is set when the fire warning signal of the first report is received. Level 3 includes a smoke-exhaust device operating signal in response to an operation signal from smoke-excluding devices such as the fire door 43 and the damper 44, and a failure alarm in response to any failure signal input via the line L. It has established. As can be seen from FIG. 5, different alarm sounds and voice messages are set depending on the event. The same alarm sound is used for the sensor alarm and the fire confirmation alarm. The same audible alarm may be used for different types of alarms at the same level.

Next, an actual alarm corresponding to the above level division will be described with an example. (1) When one type of event occurs One event that causes an alarm occurs, and when there is only one alarm to be notified, as illustrated in FIG. 6A, the event has occurred. When the disaster prevention receiver 10 receives
From 1 o'clock, a warning of 5 seconds for warning sound + 5 seconds for voice is repeated for 10 seconds per cycle. Then, as shown in FIG. 6B, when the event is restored at t2, the alarm ringing is not stopped immediately, but the alarm is stopped at t3 when one cycle ends.

When one kind of event occurs, the alarm is sounded as shown in FIG. 6C for the analog fire detector, as described above in principle. Level 2 if the analog sensor issues a fire caution signal
Warning alert sounds. After that, when the signal from the analog sensor shifts to the fire detection signal, it immediately changes to the level 1 sensor alarm.

(2) When a plurality of events that cause an alarm of the same level occur As shown in FIG. 7A, when an event A that causes an alarm of a certain level occurs at t4, an alarm is issued accordingly. An alarm consisting of sound and voice sounds. After the start of ringing, at time t5, if an event B that causes a warning at the same level as that of the event A occurs, at time t6 when one cycle of the event A ends, the warning corresponding to the event B starts, and thereafter, as the event A. The alarm for event B sounds alternately. When an event that causes an alarm of the same level occurs during the alarm ringing for a certain event, the alternate ringing is started at the end of one cycle without switching in the middle of the cycle.

When the event B is recovered (finished) from the alternate ringing state of FIG. 7A, it is divided into two as shown in FIG. 7B. When the event B recovers at t7 when the alarm of the event B is ringing, only the alarm of the event A is repeated after the end of the cycle. When the event B recovers at t8 when the alarm of the event A is ringing, the alarm of the event B does not ring and the alarm of the event A is repeated even after the ringing cycle of the ringing event A is completed.

FIGS. 7 (c) and 7 (d) show specific examples in the case where an event causing a warning of the same level occurs. As shown in FIG. 7 (c), the disaster prevention receiver 10 that has received the first report from the fire detector has a detector alarm (FIG. 5).
Repeat the warning sound and voice. When the second report is received at t9 in the middle of repeating, the fire confirmation alarm is switched to at t10 at the end of one cycle of the sensor alarm, and this is repeated. After that, when a gas leak occurs at t11, one cycle of the fire confirmation alarm ends
The gas leak alarm is sounded at 12:00, and the fire confirmation alarm and the gas leak alarm are repeated thereafter.

As shown in FIG. 7 (d), when the shutter activation signal is input at t13 while the alarm consisting of "alarm sound + voice" is repeatedly activated in response to the operation of the fire door, the fire door ring cycle After t13 ', the shutter and fire door alarms are alternately repeated. After that, even if a new operation signal is input from the damper at t14, the alarm regarding the damper does not sound. After that, when the fire door is restored, the shutter and damper alarms sound alternately, or when the shutter is restored, the fire door and damper alarms sound alternately. Even if an operation signal is output from another fire door after the alarm of one fire door, the alarm does not change. If the shutter is further activated in this state, the fire door and the shutter alarm will alternately sound one cycle at a time. In this way, when a plurality of events corresponding to the same level of alarms occur, the maximum two types of alarms are alternately sounded.

(3) When a plurality of events that cause alarms of different levels occur When a plurality of events that cause alarms of different levels occur, alternate ringing does not occur as shown in FIG. Prioritize high level alerts. As shown in FIG. 8A, when an event corresponding to a higher level alarm occurs at t15 while a relatively low level alarm is ringing,
Irrespective of the ringing cycle of the low-level alarm that was sounding until then, the high-level alarm sounds immediately and thereafter only the high-level alarm repeats. In addition, FIG.
As shown in FIG. 8B, when the event that causes the high level alarm is recovered at t16, the ringing cycle ends at t16 '.
From time to time, a low level alarm will start ringing and this alarm will repeat thereafter.

The details are shown in FIGS. 8 (c) and 8 (d). In FIG. 8 (c), when a level 3 alarm is sounding due to a failure and a fire detection signal is received from the sensor at t17, the level 1 sensor alarm is immediately switched to,
After that, this alarm is repeated. Further, as shown in FIG. 8D, when the sensor recovers at t18 during the occurrence of a failure and the sounding of the sensor alarm, the one cycle of the sensor alarm for alarm at the recovery ends. After that, the alarm is switched to the failure alarm at t18 '.

(4) Sound stop switch 14 during alarm ringing
Is operated, the sound stop switch 1 is activated while the alarm from the speaker 17 is ringing.
When 4 is operated, the alarm immediately stops when it is operated,
The sound stop switch 14 that was blinking at the same time is turned off.
FIG. 9 shows a specific example. First, at time t20, a level 1 sensor alarm is sounded in response to the fire detection signal.
Next, when a gas leak alarm is generated at t21, the gas leak alarm sounds at t23 when one cycle of the sensor alarm warning that was ringing at this time ends, and thereafter the sensor alarm signal and the gas leak alarm are generated. Repeated. Note that t21 and t
Fire door operates at t22 between 23 and 23, but level 3
The alarm does not sound because it is the alarm of.

In this state, when the sound stop switch 14 is operated at t24, the alarm is stopped. At this time, the effect of stopping the alarm extends to the event of the fire door that is not actually ringing. After the alarm is stopped by the sound stop switch 14, if a failure occurs as an event that causes a new alarm at t25, a failure alarm sounds in this case. That is, once the sound stop switch 14 is operated, the initial state without any event that causes the alarm occurs, and when a new event occurs, the alarm sounds in accordance with it.

According to the disaster prevention receiver 10 described above, the acoustic section 33 having the speaker 17 as an acoustic device for issuing an alarm.
However, since the hardware configuration of the system is simplified, the cost can be reduced. Further, since there is only one audio device, there is no possibility that the alarm sounds will be duplicated and difficult to hear. And there is one acoustic device,
Instead of being able to notify multiple alerts at the same time, various alerts are assigned a level that indicates their priority according to the importance of the event, and alerts with relatively high priority are given priority over alerts with low alert. Since it is configured such that the alarm of a serious event is sounded with priority, the safety as a disaster prevention receiver is secured.

That is, the alarms of different levels do not sound in a mixed manner, and when a serious event occurs while the low level alarm is sounding, the low level alarm is immediately stopped and the high level alarm of Since the alarm is sounded, the alarm with high priority can be immediately known and the safety is high. On the contrary, if an event causing a certain level of alarm is occurring at the same time as an alarm of a higher priority level is ringing, and if the event causing the higher level of alarm is recovered, , The alarm is switched to a low level alarm after the end of one ringing cycle at the time of recovery, so that there is no sense of incongruity such that the alarm contents are switched suddenly.

Further, in the disaster prevention receiver 10, if the alarms of the same level are sounded, two kinds of alarms are alternately sounded in units of one cycle. Therefore, even if there is only one acoustic device, a plurality of kinds of events can occur. It is possible to understand the occurrence and give a sufficiently easy notification. In addition, since the alarm is generated from a predetermined digital data file consisting of an alarm sound and a voice, the system configuration can be simplified and the content of the alarm can be easily changed as compared with the case of using a recorded voice, for example. Can handle.

Further, in the disaster prevention receiver 10, since the LED 14a of the sound stop switch 14 is made to blink while the alarm is sounding, anyone can easily know the position of the switch to be operated even in an emergency situation of sounding the alarm, Can respond promptly and reliably. Further, since the LED 14a of the sound stop switch 14 is turned on when the maintenance switch 26 is operated, it is surely recognized that the maintenance state and the state where the alarm is not sounded completely. In particular, the maintenance switch 26 is useful because it is provided inside the operation panel 10a and is installed in an unclear place.

The present invention is not limited to the above embodiment, but can be modified as appropriate. For example, the types and levels of alarms shown in FIG. 5, the number of levels, the alarm sound, the voice message, the number of alarms to be alternately sounded, etc. are merely examples, and can be changed as appropriate in accordance with the law. The operation unit may use a mouse, a keyboard, or the like as an input device.

[0040]

According to the first aspect of the present invention, there is only one acoustic device for issuing an alarm, and the hardware configuration of the system can be simplified and the cost can be reduced. Further, since there is only one audio device, there is no possibility that the alarm sounds will be duplicated and difficult to hear. Also, the acoustic device is 1
However, instead of this, as for each type of alarm, a level indicating priority is set according to the importance of the event, so that alarms of relatively high priority are given priority over alarms of low level. It will be possible to ring and the safety as a disaster prevention receiver will be secured.

According to the second aspect of the present invention, at the same level, a plurality of types of alarms are mixed for each cycle and sounded. Therefore, even if there is only one acoustic device, a plurality of types of alarms can be used. It is possible to understand that an event has occurred, and it is possible to make a sufficiently easy notification.

According to the third aspect of the present invention, since the alarms of different levels are not sounded in a mixed manner, the alarms of different levels, that is, different importance levels are similarly notified, so that the listener can hear. The content of the alarm can be surely recognized without any confusion.

According to the fourth aspect of the invention, when a serious event occurs while the low level alarm is sounding, the low level alarm is immediately stopped and the high level alarm is sounded. , You can immediately know the high-priority alarm, and the safety is high.

According to the fifth aspect of the present invention, when the high level alarm is switched to the low level alarm, the low level alarm is switched to after the end of one cycle of the high level, so that the content of the alarm suddenly switches. Don't feel

According to the sixth aspect of the present invention, the alarm is generated based on the digital data file. Therefore, the system configuration can be simplified and the alarm can be generated as compared with the case of using recorded voice, for example. You can easily respond to changes in the content.

According to the seventh aspect of the present invention, since the light emitting portion of the sound stop switch is caused to emit light while the alarm is sounding, anyone can easily move the position of the switch to be operated even in an emergency situation in which the alarm is issued. I understand and can respond surely without panic. According to the invention described in claim 8, since the sound stop switch is configured to emit light when the maintenance switch is operated, it is surely recognized that the maintenance state and the state where the alarm is not sounded completely. . This is especially useful when the maintenance switch is installed in an unclear place such as inside the housing.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration of a disaster prevention system including an example of a disaster prevention receiver of the present invention.

FIG. 2 is a front view showing the external appearance of the disaster prevention receiver of FIG.

3 is a block diagram showing a control circuit of the disaster prevention receiver of FIG.

FIG. 4 is a diagram showing details of an acoustic section of the control circuit of FIG.

FIG. 5 is a table showing examples of alarm leveling, alarm sounds, and voice messages.

6A and 6B are diagrams for explaining an alarm when one event occurs, in which FIG. 6A shows the start of ringing of the alarm when the event occurs, and FIG. 6B shows the end of the alarm when the event ends. (C) shows the change in the alarm when the analog sensor detects a fire.

FIG. 7 is a diagram for explaining a state in which a plurality of alarms of the same level are alternately sounded.

FIG. 8 is a diagram for explaining a ringing state of alarms when events that cause alarms of different levels occur simultaneously.

FIG. 9 is a diagram for explaining the stop of the alarm when the sound stop switch is operated.

[Explanation of symbols]

1 disaster prevention system 10 disaster prevention receiver 14 Sound stop switch 14a LED (light emitting part) 17 speakers 26 Maintenance switch 33 Acoustic part (acoustic device) 40 repeater 41 Fire detector 42 Gas leak detector 43 fire door 44 damper

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Claims (8)

[Claims] 1. A disaster prevention receiver provided in a disaster prevention system for receiving various event information generated in the disaster prevention system, and when the event information is received, an alarm composed of a predetermined content corresponding to the event as one cycle. A disaster prevention receiver, which is equipped with a single sounding device and is provided with a level indicating a priority level for an alarm depending on the importance of the corresponding event. 2. When a plurality of types of events occur at the same time, if the alarms corresponding to these events are at the same level, these alarms are mixed and sounded in units of one cycle. Disaster prevention receiver described. 3. When a plurality of types of events occur at the same time, if the alarms corresponding to these events have different levels, these alarms are not mixed and sounded. Disaster prevention receiver. 4. When an event causing a higher level alarm occurs while an alarm of a certain level is sounding,
The disaster prevention receiver according to any one of claims 1 to 3, wherein the ringing low level alarm is immediately stopped and the high level alarm is ringed. 5. If an event causing a certain level of alarm occurs at the same time as a higher level alarm is sounding, if the event causing the higher level alarm is recovered, The disaster prevention receiver according to any one of claims 1 to 4, wherein the alarm is switched to a low level alarm after the end of the cycle that is ringing at the time of restoration. 6. One cycle of an alarm is composed of an alarm sound and a sound, and the alarm is generated based on a digital data file containing data of both the alarm sound and the sound. Disaster prevention receiver described in any one. 7. An acoustic stop switch for immediately stopping an alarm from an audio device, wherein an acoustic stop switch having a light emitting portion which emits light while the alarm sounds is provided.
Disaster prevention receiver described in any of. 8. A maintenance switch for stopping the sounding of an alarm by an audio device at the time of maintenance inspection, and when the maintenance switch is operated, the light emitting portion of the sound stop switch emits light. Disaster prevention receiver described in 7.