JPS63108489A - Fire alarm system - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] Technical Field] The present invention relates to a major disaster alarm system used in medium to large-sized buildings.

[Background Art] Conventionally, this type of disaster alarm system is equipped with 11 fire receivers that centrally monitor fires, and the detector line of this fire receiver is equipped with multiple fire detectors such as smoke sensors, and A transmitter that issues an alarm when a fire occurs is connected, and this fire receiver centrally monitors the detection output of the fire detector and receives the alarm signal from the transmitter. Then, when the detection output of the fire detector occurs in each district such as each floor or block of a building, or when an alarm signal is transmitted from a transmitter, the district as an acoustic device sounds to notify of a fire. It has sound. Also, within this species.

Okimata's disaster alarm system is equipped with an emergency broadcast device that broadcasts an emergency broadcast from a fire receiver in the event of a fire.
In the event of a fire, this emergency alarm device can broadcast the location of the fire and help you evacuate! It is now possible to provide guidance. In addition, since fire detectors and the like may malfunction, a sound stop switch is provided so that the rrfJ operation of the sound device can be temporarily stopped. In such conventional disaster alarm systems, a fire is detected by a fire detector as described above, and when the fire receiver determines that there is a fire based on the detection output, it sounds a local sound. However, if the district sound system were activated while an emergency broadcast was being broadcast, it would be impossible to hear the content of the broadcast, so the system stops the district sound system. In addition, even if the alarm button on the transmitter is pressed to alert that a fire has occurred, the sound of the area sound will stop when the emergency broadcast is being broadcast. .

However, in the disaster alarm system described above, if a fire occurs while the sound stop switch is turned on, that is, when the sound of the district sound is stopped by the sound stop switch, the district sound will not sound. There was a risk that the detection of the fire would be delayed. However, even when an emergency broadcast is being broadcast, the district sound system does not sound. In addition, in a disaster alarm system that is equipped with multiple repeaters that monitor fires in each district, and transmits the monitoring output for each district from these repeaters to the above-mentioned fire receiver, each relay is connected to the detector line of each repeater. The output from the fire detector or transmitter is transmitted to the fire receiver via the repeater, and the fire receiver is controlled to sound the district sound connected to the repeater via the repeater. ing. In other words, to show the flow of No. 43, fire detector →
Repeater → Fire receiver M8! → Repeater → District sound. For this reason, there was a problem in that signal processing took time and it took time for the district sound to start playing.

[Object of the Invention] The present invention has been made in view of the above points, and its purpose is to provide a disaster notification system that can quickly notify that a fire has occurred. .

[Disclosure of the Invention] (Configuration) The present invention provides a fire reception system that centrally monitors the detection output of a fire detector connected to a sensor line and receives an alarm signal from a transmitter that issues an alarm when a fire occurs. an acoustic device that sounds to alert you to a fire when a detection output from the fire detector occurs or an alarm output is sent from a transmitter; and an emergency broadcast from a fire receiver when a fire occurs. In a disaster alarm system equipped with an emergency broadcast device for making a sound, and an audible stop switch for stopping the sound of the sound device, when the audible stop switch is operated to stop the sound vI device, when a fire is detected, It is equipped with an acoustic control means that makes the above-mentioned acoustic device sound for a certain period of time when a detection output is generated in the fire detector or when a fire detector output is generated. The device is designed to sound for a certain period of time to quickly alert you to the occurrence of a fire.

(Example) FIGS. 1 to 4 are diagrams showing an example of the present invention,
As shown in Figure #114, the fire reception system of this embodiment consists of a fire reception ff1A that centrally monitors fires, and a repeater C that is installed in each district and transmits fire monitoring information of each district to the fire reception fiA. , multiple sensor ports B of each repeater
A fire detector S or transmitter P is connected to α, respectively.
Further, the above-mentioned central chamber C is provided with a plurality of local sound devices (for example, buzzers) B as sound devices. This embodiment also includes an emergency broadcasting device that broadcasts an emergency broadcast from the fire reception 1fiA in the event of a fire, and this emergency notification device broadcasts the location of the fire and provides evacuation guidance when a fire occurs. It is now possible to do so. It is also equipped with a display device installed in each district that lights up when a fire occurs in each district, or a ground panel that displays the district where the fire occurred on the fire receiver A. Only the schematic configuration is shown. The sound control means is always open at a certain time when an alarm is issued by the transmitter P, and when a fire is detected by the fire detector S.
1 shot multi-vibration break (hereinafter referred to as 1 shot multi) 1 for sounding the sound, and an acoustic stop switch SW.
is on (local sound ty B stops sounding), or when the emergency broadcast system is activated, a logic circuit is installed in the mackerel to stop the sounding of the local sound VB caused by the alarm output of fire detector S or transmitter fiP. It is composed of AND circuits 2 and 3, OR circuits 4 and 5, and an inverter 6. In addition,
The OR circuit 4 output is provided with a drive circuit 7 for sounding the local sound 1ffB, and the operation of this drive circuit 7 is controlled by the OR circuit 4 output.

First, the case where an alert is issued from the originating fiP will be explained with reference to FIG. When the transmitter P issues an alarm, this alarm signal is received by the repeater C via the sensor line α.

Since a plurality of sensor lines #iα are connected to this repeater C, by polling each sensor line, the repeater C detects that there is an alarm from the originating fiP. When this transmitter P issues an alarm, the 1-shot multi 1 installed in the repeater C is triggered, and for a certain period of time (
For example, 0.5 to 2 seconds) Set the output to high level. This output is input to the drive circuit 7 via the OR circuit 4,
District sound B is always driven by the drive circuit 7 and sounds for a predetermined period of time. At this time, if the emergency broadcast device is not broadcasting the emergency broadcast, the output of the OR circuit 5 becomes low level. In other words, the AND circuit 3 performs the logical product of the inverted output of the transmitter 1fiP and the output of the acoustic stop switch SW. At this time, since the inverted output of the transmitter fiP is at a low level, the output of the AND circuit 3 is the output of the acoustic stop switch SW. Regardless of the operating status of the SW, if it is at a low level and there is an alarm from generator P, the emergency broadcast system will broadcast when the output of 1-shot multi 1 falls to low level and servant C. Whether or not the local sound 9B continues to sound is determined depending on whether or not the local sound 9B continues to sound. In this way, when an emergency broadcast is not being made, the input voltage input to the AND circuit 2 via the inverter 6 will be at a high level, so the output of the AND circuit 2 will also be at a high level, and the district sound B will continue to ring. do. When an emergency broadcast is being broadcast, the output of OR circuit 5 becomes high level, and the output of AND circuit 2 emits f'ttfiP.
Since it is a low level regardless of the output, district sound B is 1.
When the sitat multi 1 output falls, the ringing will stop.

Next, the case when a fire is detected by the fire detector S will be explained with reference to FIG. Even when a fire is detected by this fire detector S, 1 side multi 1 is triggered and the local sound ¥1 is always sounded for a certain period of time (0.5 to 2 seconds) like the above-mentioned transmitter P. It is supposed to be done. In addition, in order to prevent the relay C from malfunctioning when a fire is detected by the fire detector S, the detection output of the fire detector S is continuously sent to the relay C multiple times in order to prevent the relay C from malfunctioning. When a signal is received, it is determined that there is a fire, so-called storage processing is performed. In this case, one input of the AND circuit 3 is at a high level because the transmission 1fiP is off, and therefore the operating state of the youth stop switch SW is related to the ringing of the district sound B.

In other words, transmission 8! The inverted output of P, in this case the outgoing 8! Since there is no alarm from P, one input of the AND circuit 3 becomes high level, and therefore the output of the AND circuit 3 is determined by the output of the sound stop switch SW. When broadcasting is being performed by the AND circuit 3 output and the emergency broadcast device, the OR circuit 5 performs a logical sum with the high level output, so the youth stop switch SW is turned on.
Alternatively, when an emergency broadcast is being broadcast, district sound B sounds for a certain period of time in 1 shot multi 1 and then stops. In addition, if the acoustic stop switch SW is off (sounds TL B in front of the district if there is a sensing output) and an emergency broadcast is not being broadcast, the district will continue to operate even after the 1 shot multi 1 output falls to low level. The front 18B continues to ring.

In addition, the fire reception 111A determines whether the above-mentioned emergency broadcast is being broadcast or whether the sound stop switch SW is turned on. If the sounding of the district sound B should be stopped, the VB in front of the district The reception is stopped at the receiving fiA without going through the repeater C. In this way, in this embodiment, when the detection output of the fire detector S occurs,
Or, when the alarm signal is issued at the originating aP,
Regardless of whether an emergency broadcast is being broadcast or whether the sound stop switch SW is turned on, the JB in front of the area will sound for a certain period of time, allowing for early notification of the occurrence of a fire. Moreover, the ringing period of 1 pB in front of this area is a short fixed period (for example, 0.5 to 2 seconds),
District front t! In situations where the sound of the JB should be stopped, such as when an emergency broadcast is being broadcast or when the sound stop switch SW is turned on, the sound will be stopped, so that the emergency broadcast can be heard. There is almost no problem such as no fire detector S detection output or transmission 8
! When there is an alarm from P, the sound for a certain period of time in front of the district @B will be sounded by repeater C, and the sound of district sound B will be sounded immediately. Because it is performed directly at the TAB in front of the area, the operation to stop the ringing of the TAB in front of the area can be done quickly, and the processing time is shorter than when controlling the ringing operation of the TAB in front of the area through the repeater C and the fire receiver A as in the past. It can be made shorter, and there is no delay in the operation of District Sound B.

[Effects of the Invention] As described above, the present invention can be used when a detection output is generated in a fire detector while the acoustic stop switch is operated to stop the acoustic device, or when a fire detector output is generated. Since it is equipped with an acoustic control means that makes the above-mentioned acoustic device sound for a certain period of time, when the detection output of the fire detector occurs,
Regardless of whether the sound stop switch SW is turned on, the sound device can sound for a certain period of time, and therefore the occurrence of a fire can be notified quickly, and the sound period of this sound device is short. For a certain period of time (for example 0.
(5 to 2 seconds), the effect is that the sound device does not ring for a long time and disturb the neighbors.

[Brief explanation of the drawing]

Fig. 1 is a specific circuit diagram of the sound control means according to an embodiment of the present invention, Figs. 2 and 3 are explanatory diagrams of the same operation, and Fig. 4 is a schematic diagram of the entire disaster notification system equipped with the same. It is a diagram. A is a fire receiver, C is a repeater, S is a fire detector, P is a transmitter, SW is a sound stop switch, 1 is a one shot multi, 2 and 3 are AND circuits, and 4 and 5 are OR circuits. Agent Patent Attorney Ishi 1) 艮 715′ Binm Kyo 2nd figure @ 3rd figure

Claims (3)

[Claims] (1) A fire receiver that centrally monitors the detection output of the fire detector connected to the detector line and receives an alarm signal from a transmitter that issues an alarm when a fire occurs, and a fire receiver that monitors the detection output of the fire detector. an acoustic device that sounds when an output occurs or when an alarm output is sent from a transmitter to notify a disaster; an emergency broadcast device that broadcasts an emergency broadcast from a fire receiver in the event of a fire; In a fire alarm system equipped with an acoustic stop switch that stops the sound of the acoustic device,
Sound control means for causing the sound device to sound for a certain period of time when a fire detector outputs a detection output while the sound stop switch is operated to stop the sound device. A fire alarm system characterized by comprising: (2) While the emergency broadcast device is broadcasting an emergency broadcast,
Claim 1, characterized in that when a detection output is generated in a fire detector or an alarm signal is transmitted from a transmitter, the sound control means causes the sound device to sound for a certain period of time. Fire alarm system as described in section. (3) When the disaster alarm system is a fire alarm system equipped with multiple repeaters that monitor each area and transmit the monitoring output to the fire receiver, the repeater will activate the acoustic device in the event of a fire. A patent characterized in that the above-mentioned sound control means is configured to emit sound and control the sound of the sound device by determining whether or not the sound of the sound device needs to be stopped by the fire receiver. Claim 1 or 2
Fire alarm system as described in section.