JPH0628586A - Tunnel disaster prevention facility - Google Patents

Abstract

PURPOSE:To flicker red display lamps displaying the operated state of plural pumps which are respectively provided for plural monitoring ranges in a tunnel in synchronizing with plural red display lamps in the other monitoring ranges at the time of operating the pumps. CONSTITUTION:In an abnormal case when the pumps corresponding to the plural monitoring ranges in the tunnel are driven, a disaster prevention board 2 issues a display lamp flickering command to respective repeater boards 3 in the monitoring ranges and the starting control circuits 13 of the respective repeater boards 3 receiving the command output a flickering starting control signal to a red display lamp control circuit 17. At this time, each red display lamp control circuit 17 receives a synchronizing pulse signal constantly outputted from the disaster prevention board 2 from respectively common red display lamp synchronizing signal line 10 and prepares a flickering driving signal based on the synchronizing pulse signal so that the deviation of flickering timings is not generated between the red display lamps 5 in the plural monitoring ranges.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disaster prevention facility for a tunnel, and more particularly to a fire hydrant device provided in the tunnel and a red indicator lamp for indicating the operating state of a pump for supplying water to the water spray fire extinguisher device.

[0002]

2. Description of the Related Art Tunnel disaster prevention equipment installed in a tunnel such as a highway or a general road includes a monitoring board called a disaster prevention board installed in a tunnel management center and the like, and a plurality of sections in the tunnel, for example, every 50 m. It is divided into a plurality of sections as a monitoring range, and is composed of a relay board provided for each monitoring range.

A relay board is provided for each section within each monitoring range in the tunnel, and a fire detector (for example, every 25 m) of flame type or dimming type, and a fire hydrant incorporating a fire hose, an emergency telephone, etc. A device (for example, every 50 m), a water spray fire extinguisher for spraying water for fire extinguishing in a long tunnel (water spray head is for example every 5 m), and a pump for supplying water to the fire hydrant device and the water spray fire extinguisher. The driving control is performed on a red indicator light (for example, every 50 m) that displays the operating state of. One pump may be provided for each monitoring range, and one pump may be responsible for a plurality of monitoring ranges.

In the disaster prevention equipment of the tunnel, signals such as fire signals and control signals are transmitted by pulse code signals between the disaster prevention panel and the relay panel, but the relay panel and each fire detector, fire hydrant device, Each of the terminals such as the water spray fire extinguisher and the red indicator lamp is separately connected by an electric line (for example, a signal line and a pair of power lines).

FIG. 4 is a block diagram showing an outline of conventional disaster prevention equipment for a tunnel. In the figure, 1 is a tunnel, 2 is a disaster prevention board, 3 is a relay board provided for each monitoring range (A to N) in the tunnel 1, 4 is a transmission line connecting the disaster prevention board 2 and each relay board 3, Reference numeral 5 is a red indicator lamp composed of a light emitting diode or the like, and 6 is an electric wire connecting the relay board 3 and each red indicator lamp 5.

A conventional tunnel disaster prevention facility is constructed as described above. For example, regarding a control system for the red indicator lamp 5, a pump (not shown) for supplying water to a fire hydrant device and a water spray fire extinguisher (not shown). The operation status of (omitted) is managed and grasped by the disaster prevention panel 2. Therefore, disaster prevention board 2
Therefore, a control command is issued to each relay board 3 according to the operating condition of the pump. For example, each monitoring range A in the tunnel 1
In N, the pump is stopped during normal operation without any abnormality, and the constant lighting command indicates that each monitoring range A
To N relay boards 3, each relay board 3 outputs a constant lighting signal to each red indicator lamp 5, and each red indicator lamp 5 is constantly lit. Then, of the plurality of monitoring ranges A to N in the tunnel 1, for example, when an abnormality such as a fire occurs in a certain monitoring range, when a pump corresponding to this monitoring range is operated, a blinking command is in operation. Is sent to the relay board 3 in the monitoring range corresponding to the pump of
From this, a blinking signal is output to each red indicator lamp 5 to cause each red indicator lamp 5 to blink.

Therefore, by looking at the blinking red indicator light 5 in the tunnel 1, the driver or the like traveling in the tunnel 1 can know that there is an abnormality such as a fire.

[0008]

In the conventional disaster prevention equipment for a tunnel as described above, when an abnormality such as a fire occurs in a certain monitoring range in the tunnel 1, a pump corresponding to each monitoring range is operated. The disaster prevention panel 2 issues a blinking command to each relay panel 3 in the monitoring range corresponding to the pump in operation, and each relay panel 3 outputs a blinking signal to each red indicator lamp 5 for each red color. The indicator light 5 is made to blink. However, since the blinking control is performed for each relay panel 3 in the tunnel 1, the blinking timing is different between the red indicator lamps 5 of different relay panels 3, so that the tunnel 1
There is a problem that the red indicator lamp 5 gives a strange feeling.

The present invention has been made to solve the above problems, and there is another red indicator lamp for indicating the operating state of a plurality of pumps provided in each of a plurality of monitoring ranges in a tunnel or shared. It is an object of the present invention to provide a tunnel disaster prevention facility that blinks in synchronization with the red indicator light in the monitoring range and when the pump is operating.

[0010]

DISCLOSURE OF THE INVENTION A tunnel disaster prevention equipment according to the present invention transmits a sync pulse signal for synchronizing and blinking a red indicator lamp, which is always output from a disaster prevention panel, to each relay panel. The relay control panel that has a line and receives various control commands from the disaster prevention panel receives a command to turn on the indicator light from the disaster prevention panel or blinks the indicator light, and outputs a start control signal for lighting or blinking, and a start control circuit. And a red indicator control circuit that outputs a blinking drive signal in synchronization with each red indicator upon receiving a sync pulse signal from the red indicator sync signal line when receiving a blinking start control signal from ing.

Further, each relay board receives an amplifier circuit for amplifying the sync pulse signal transmitted to the succeeding relay board, a bypass circuit having a switching element connected in parallel to the amplifier circuit, and failure information of the amplifier circuit. At this time, a bypass control circuit which outputs a drive signal for turning on the switching element of the bypass circuit may be provided.

Furthermore, each relay board receives a sync pulse signal from the sync signal line of the red indicator light and outputs it, a sync signal receiving circuit that generates and outputs a sync pulse signal, and a sync signal. The switching circuit that receives the signals from the receiving circuit and the non-synchronous signal generation circuit and switches to output the non-synchronous pulse signal from the synchronous pulse signal when receiving the selection signal, and the bypass control circuit of the relay board receives from the amplifier circuit. Disaster prevention equipment operation / monitoring control circuit that transmits failure information to the disaster prevention board and disaster prevention board that receives failure information from the disaster prevention equipment operation / monitoring control circuit of at least two consecutive relay boards. A sorting control circuit that receives a sorting control command for sorting the non-synchronous signal generating circuit to the relay board and outputs a sorting signal that causes the switching circuit to output the unsynchronized pulse signal is provided. Rukoto can also.

Furthermore, each relay board includes a sync signal receiving circuit for receiving and outputting a sync pulse signal from the red indicator sync signal line, a sync signal generating circuit for generating and outputting a sync pulse signal, and a sync signal A switching circuit that receives signals from the signal receiving circuit and the non-synchronous signal generating circuit, and switches to output the non-synchronous pulse signal from the synchronous pulse signal when receiving the selection signal, and a red indicator light input to the relay board. The disconnection monitoring circuit that monitors disconnection from the sync pulse signal of the sync signal line, the disconnection abnormality determination circuit that determines whether or not the disconnection is detected based on the detection information detected by the disconnection monitoring circuit, and the disconnection information that the disconnection abnormality determination circuit determines The disaster prevention device / monitor control circuit that transmits to the panel, and the disaster prevention panel that receives disconnection information from the disaster prevention device / monitor control circuit of the relay panel send a non-synchronized signal to the relay panel after the abnormal relay panel. May be provided with a selection control circuit for outputting a selection signal for outputting a no-sync pulse signal to the switching circuit receives a selection control command for selecting the circuit.

[0014]

According to the present invention, when there is an abnormality such as a fire in a certain monitoring range in the tunnel and the pump corresponding to this monitoring range is abnormal, the disaster prevention panel monitors the corresponding pump being driven. An indicator light blinking command is issued to each relay board in the range, and the start control circuit of each relay board which receives the instruction outputs a blinking start control signal to the red indicator light control circuit. At this time, each red indicator lamp control circuit outputs a blinking drive signal to a plurality of red indicator lamps based on the synchronizing pulse signal from the red indicator lamp synchronizing signal line to blink the red indicator lamps. The red indicator control circuit of each relay board receives the sync pulse signal that is always output from the disaster prevention panel from the common red indicator sync signal line, and creates a blinking drive signal based on the sync pulse signal. Therefore, there is no difference in the blinking timing between the red indicator lights in the plurality of monitoring ranges.

Further, each relay board is provided with an amplifier circuit for amplifying the sync pulse signal transmitted to the subsequent relay board, and a bypass circuit having a switching element connected in parallel to the amplifier circuit. If a failure occurs, the failure information is output, and the bypass control circuit receiving the failure information outputs a drive signal for turning on the switching element of the bypass circuit, so that the switching element of the bypass circuit is turned on and the bypass circuit is formed. The sync pulse signal is transmitted to the subsequent relay board by the bypass circuit even if the amplifier circuit fails.

Further, when the amplifier circuit of the relay board fails, the bypass control circuit sends the failure information received from the amplifier circuit to the disaster prevention device operation / monitoring control circuit, and the disaster prevention device operation / monitoring control circuit transmits the failure information to the disaster prevention device. When the disaster prevention board receives the failure information from two consecutive relay boards, the disaster prevention board outputs a selection control command for selecting the non-synchronized signal generating circuit for the abnormal relay boards and thereafter to the selection control circuit. Also, when the red indicator light sync signal line in each relay board is disconnected, the disconnection abnormality determination circuit determines disconnection from the detection information detected by the disconnection monitoring circuit and sends disconnection information to the disaster prevention device operation / monitoring control circuit, The disaster prevention equipment operation / monitoring control circuit transmits the disconnection information to the disaster prevention board, and when the disconnection information is received from the relay board, the disaster prevention board sends a selection control command for selecting the non-synchronized signal generation circuit for the abnormal relay board and subsequent ones. Output to the sorting control circuit.

As described above, the selection control circuit that receives the selection control command outputs the selection signal that causes the switching circuit to output the non-synchronized pulse signal. Then, the sync pulse signal of the sync signal receiving circuit has been output to the red indicator lamp control circuit until now, but it is switched and the sync pulse signal output from the sync signal generating circuit is output. Therefore, even if the sync pulse signal is not transmitted due to the failure of the amplifier circuit or the disconnection of the red indicator light sync signal line in each relay board after the abnormal relay board, the unsynchronized pulse signal generated in each relay board Based on this, the red indicator light can be blinked.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a block diagram showing an essential part of an embodiment of the present invention, FIG. 2 is a block diagram showing the outline of the embodiment, and FIG. Is.
In the figure, the same configurations as those of the conventional example are denoted by the same reference numerals, and the description of the duplicated configurations will be omitted. 7 is a fire detector, 8 is a fire hydrant, 9 is a water spray fire extinguisher, and these are tunnel 1
A plurality of monitoring ranges A to N are provided. Reference numeral 10 is a red indicator light sync signal line for transmitting a sync pulse signal of, for example, 2 Hz, which is constantly output from the disaster prevention board 2, to each relay board 3.

Reference numeral 11 denotes a CPU provided in each relay board 3.
(Microcomputer), 12 is a disaster prevention device operation / monitoring control circuit for operating and monitoring control of the disaster prevention device such as the fire detector 7, the fire hydrant device 8 and the water spray fire extinguisher device 9 while transmitting signals to the disaster prevention panel 2. , 13 is a start-up control circuit that receives an instruction to turn on or off the indicator light from the disaster prevention panel 2, 14 is a bypass control circuit that drives and controls a switching element of a bypass circuit described later, and 15 is a selection control instruction from the disaster prevention panel 2. A selection control circuit 16 for receiving the signal is a disconnection abnormality determination circuit for determining disconnection of the red indicator light synchronization signal line 10. The CPU 11 includes a disaster prevention device operation / monitoring control circuit 11 to a disconnection abnormality determination circuit 16.

Reference numeral 17 is a red indicator light control circuit for turning on or blinking the red indicator lamp 5 in response to a lighting or blinking start control signal from the start control circuit 13, and 18 is a red indicator lamp synchronizing signal line 10 in the relay board 3. A sync signal receiving circuit for receiving and outputting a sync pulse signal from the device, 19 is provided in the relay board 3, and a non-sync signal generating circuit for generating and outputting a sync signal of 2 Hz, for example, 20 is a sync signal receiving circuit 1
8 and a signal from the non-synchronous signal generating circuit 19, and a switching circuit for switching so as to output the non-synchronous pulse signal from the synchronous pulse signal when the selection signal is received, and 21 is a red indicator light input to the relay board 3. A disconnection monitoring circuit that monitors disconnection from the synchronization pulse signal of the synchronization signal line 10, and 22 is provided in the relay board 3 and is an amplifier circuit that amplifies the synchronization pulse signal transmitted to the following relay board 3 and the amplifier circuit itself fails. When it does, it outputs a failure signal. Reference numeral 23 is a bypass circuit having a switching element 23a connected in parallel to the amplifier circuit 22.

Next, the operation of the above embodiment will be described. First, a normal case where there is no abnormality such as a fire in each of the monitoring ranges A to N in the tunnel 1 and the pump is stopped will be described. In this case, a lighting command is issued from the disaster prevention board 2 to each relay board 3 corresponding to each monitoring range A to N, and the activation control circuit 13 of each relay board 3 that has received the lighting instruction lights up. The start control signal of the red indicator lamp control circuit 17
Output to. At this time, the red indicator light control circuit 17
Receives the sync pulse signal that is always output from the disaster prevention panel 2 from the red indicator light sync signal line 10, but creates a lighting drive signal and outputs it to the plurality of red indicator lights 5 to output the respective red indicator lights. Turn 5 on.

Next, there will be described a case where there is an abnormality such as a fire in, for example, two adjacent monitoring ranges A and B in the tunnel 1 and two pumps corresponding to the two monitoring ranges A and B are driven. . In this case, first, a plurality of fire detectors 7 detect a fire, or a pump start button (not shown) of the fire hydrant device is pressed, and a fire signal is transmitted to the disaster prevention board 2 via the disaster prevention equipment operation / monitor control circuit 12. Then, the pump is driven to operate the fire hydrant device 8 or the water spray fire extinguisher device 9. Corresponding to the drive of the pump, the disaster prevention panel 2 issues an indicator light blinking command to each of the relay panels 3 of the two monitoring ranges A and B, and each relay panel 3 that has received the command
The startup control circuit 13 of 1 outputs a flashing startup control signal to the red indicator light control circuit 17. At this time, each red indicator light control circuit 17 creates a blinking drive signal based on the sync pulse signal from the red indicator light sync signal line 10 and outputs it to the plurality of red indicator lights 5 to output the red indicator lights 5 at 2 Hz. Flashes in a cycle. The red indicator light control circuit 17 of the two relay boards 3 receives the sync pulse signals constantly output from the disaster prevention board 2 from the common red indicator light sync signal line 10, respectively.
Since the blinking drive signal is generated based on the synchronization pulse signal, the blinking timing does not shift between the two red indicator lamps 5 in the two monitoring ranges A and B.

In the above description, the case where there is an abnormality such as a fire in the two adjacent monitoring ranges A and B is the same as in the case where there are two or more monitoring ranges and the case where they are not adjacent. There is no difference in the blinking timing of the red indicator lamp 5, and there is no discomfort. Although the above description has been made assuming that there is one pump in one monitoring range, the same operation as above is performed even when two or more monitoring ranges, such as A and B, are shared by one pump. To do.

Further, when there is no abnormality such as a fire in each of the monitoring ranges A to N in the tunnel 1 and the pump is stopped normally, or there is an abnormality such as a fire in a plurality of monitoring ranges, a plurality of pumps are driven. In the abnormal case, for example, when the amplifier circuit 22 of the relay board 3 in the two monitoring ranges A and B fails, the amplifier circuit 22 itself outputs failure information to the bypass control circuit 14. The bypass control circuit 14 that has received the failure information outputs a drive signal to turn on the switching element 23a of the bypass circuit 23, and the bypass circuit 23
To form. Therefore, the sync pulse signal is transmitted to the succeeding relay board 3 by the bypass circuit 23 even if the amplifier circuit 22 fails.

When the amplifier circuits 22 of the two adjacent relay boards 3 respectively fail in this way, for example, the distance between the two relay boards 3 and 3 is long, and the red indicator light synchronizing signal line connecting them is provided. If the length of 10 is long, the sync pulse signal may be attenuated and may not be transmitted to the subsequent amplifier circuit 22 of the relay board 3. Therefore, in such a case, the bypass control circuit 14 sends the failure information received from the amplifier circuit 22 to the disaster prevention device operation / monitoring control circuit 12, and the circuit 1
Since 2 transmits the failure information to the disaster prevention board 2, when the failure information is received from two consecutive relay boards 3 in this manner, the non-synchronous signal generation circuit 19 for the abnormal relay boards 3 and subsequent ones is received. A sorting control command for sorting is output to the sorting control circuit 15, the sorting control circuit 15 outputs a sorting signal that causes the switching circuit 20 to output a non-synchronized pulse signal, and the red indicator lamp control circuit 17 outputs a non-synchronized signal generation circuit. 19 non-synchronous pulse signals are output.

Therefore, when the pump is abnormally driven, the red indicator lamp 5 of each relay panel 3 after the abnormal relay panel 3 does not depend on the synchronizing pulse signal of the red indicator synchronizing signal line 10, and the non-synchronous signal generating circuit 19 The blinking drive signal generated based on the non-synchronized pulse signal of (2) causes the blinking to be performed at a cycle of 2 Hz, which is to be backed up. In addition, when the pump is stopped normally, a startup control command for lighting is output from the disaster prevention panel 2 to the startup control circuit 13.
A lighting start control signal is output to the red indicator lamp control circuit 17, and the red indicator lamp control circuit 17 creates a lighting drive signal and outputs it to the red indicator lamp 5 to light it.

Further, in the normal case where the pump is stopped or in the abnormal case where the pump is driven, for example, the red indicator light synchronization for inputting the synchronization pulse signal to the relay board 3 in one monitoring range A is performed. When the signal line 10 is disconnected, the disconnection abnormality determination circuit 16 determines from the detection information detected by the disconnection monitoring circuit 21 that there is a disconnection, and sends the disconnection signal to the disaster prevention device operation / monitoring control circuit 12, which circuit 12 It is sent to the disaster prevention board 2 as the disconnection information. When the disconnection board 2 receives the disconnection information from the relay board 3 in this way,
A selection control command for selecting the non-synchronous signal generation circuit 19 for the abnormal relay board 3 and the subsequent is output to the selection control circuit 15, and the selection control circuit 15 outputs a selection signal for causing the switching circuit 20 to output the non-synchronized pulse signal. Red indicator light control circuit 17
Then, the non-synchronized pulse signal of the non-synchronized signal generation circuit 19 is output.

Therefore, even if the red indicator light sync signal line 10 is disconnected when the pump is abnormally driven and the sync pulse signal is not transmitted to each relay board 3 after the disconnection,
After the disconnection, the red indicator lamp 5 of each relay board 3 is made to blink by the blinking drive signal generated based on the non-synchronization pulse signal of the non-synchronization signal generation circuit 19 and is backed up.

The case where the red indicator light synchronization signal line 10 immediately before the monitoring area A is broken has been described above.
FIG. 3 shows an operation example of the red indicator light synchronization signal 10 in the case where disconnection occurs between C and D, and each disconnection is restored. In this case as well, when the pump is stopped normally, the start control circuit 13 outputs the start control command for lighting to the red light control circuit 1.
A lighting start control signal is output to 7, and the red indicator lamp control circuit 17 creates a lighting drive signal and outputs it to the red indicator lamp 5 for lighting. In the above-mentioned embodiment, the R type distributed type using a common line between the relay board and each fire detector as the terminal is explained, but the P type using each dedicated line between the relay board and each fire detector is explained. It goes without saying that the present invention is also applicable to the type dispersion type.

[0030]

As described above, according to the present invention, when there is an abnormality such as a fire over a plurality of monitoring ranges in a tunnel and the pump corresponding to these monitoring ranges is abnormal, the disaster prevention panel can check the monitoring range. An indicator flashing command is issued to each relay board, and the start control circuit of each relay board that receives the command outputs a blinking start control signal to the red indicator light control circuit. Receives the sync pulse signal that is always output from the disaster prevention panel from the common red indicator light sync signal line, and creates a blinking drive signal based on the sync pulse signal, so the red indicator light that is blinked by the blinking drive signal The effect that there is no difference in the blinking timing even if it is between multiple monitoring ranges, and you do not feel discomfort when you see these red indicator lights in the tunnel A. Further, when the amplifier circuit for amplifying the sync pulse signal transmitted to the succeeding repeater board provided in each repeater board fails, the sync pulse signal is transmitted to the succeeding repeater board by the bypass circuit. Therefore, it is possible to back up even if the amplifier circuit fails.

Furthermore, when the amplifier circuits of at least two relay boards have failed, the failure information of these amplifier circuits is transmitted to the disaster prevention board, and the disaster prevention board has no information for the relay boards after the abnormal relay board. Sending a selection control command to select the sync signal generation circuit, and in each relay board, the red indicator control circuit creates a blinking drive signal based on the non-synchronization pulse signal of the non-synchronization signal generation circuit provided in the relay board. Since the red indicator light blinks, even if the synchronous pulse signal is attenuated and cannot be transmitted to the relay panel after that due to the failure of two consecutive amplifier circuits, there is an abnormality such as a fire in the tunnel. This has the effect of making it possible to blink the red indicator light when the pump is operating abnormally.

Furthermore, when the red indicator light sync signal line for inputting the synchronizing pulse signal to a plurality of relay boards is broken between the relay boards, the disconnection information of the red indicator light sync signal line is transmitted to the disaster prevention board to prevent disaster. Abnormality affected by disconnection In a panel, a selection command is issued to the relay boards for subsequent relay boards to select the non-synchronous signal generation circuit. The red indicator control circuit creates a blinking drive signal based on the sync pulse signal to flash the red indicator, so the sync signal line of the red indicator is disconnected and the sync pulse signal is not transmitted to the relay board after that. Even if there is an abnormality such as a fire in the tunnel and the pump is abnormal, the red indicator light can be blinked.

[Brief description of drawings]

FIG. 1 is a block diagram showing a main part of an embodiment of the present invention.

FIG. 2 is a configuration diagram showing an outline of the embodiment.

FIG. 3 is an explanatory diagram showing an operation example of a red indicator light synchronization signal line.

FIG. 4 is a configuration diagram showing an outline of conventional disaster prevention equipment for a tunnel.

[Explanation of symbols]

 2 Disaster prevention board 3 Relay board 5 Red indicator light 10 Red indicator light sync signal line 13 Start control circuit 17 Red indicator light control circuit

Claims (4)

[Claims] 1. A tunnel is divided into a plurality of monitoring ranges,
Each monitor that drives and controls a red indicator that displays the operating status of multiple fire detectors, fire hydrant devices, water spray fire extinguishers and fire hydrant devices, and pumps that supply water to the water spray fire extinguishers, provided for each monitoring range. In a tunnel disaster prevention equipment consisting of relay boards provided for each range and a disaster prevention board that outputs various control commands to these relay boards, in order to synchronously blink the red indicator light that is constantly output from the disaster prevention board A red indicator light sync signal line for transmitting the sync pulse signal of the above to each relay board is provided, and each relay board receives the indicator light lighting command or the indicator light blink command from the disaster prevention board and outputs a lighting or blinking start control signal. When the start control circuit and the blinking start control signal from the start control circuit are received, the blinking drive signal synchronized with each red indicator is received by receiving the sync pulse signal from the red indicator sync signal line. Tunnel disaster prevention equipment, which is equipped with a red indicator light control circuit for outputting. 2. Each relay board comprises an amplifier circuit for amplifying a sync pulse signal transmitted to a succeeding relay board, and a bypass circuit having a switching element connected in parallel to the amplifier circuit.
The tunnel disaster prevention equipment according to claim 1, further comprising a bypass control circuit that outputs a drive signal for turning on a switching element of the bypass circuit when the failure information of the amplifier circuit is received. 3. A sync signal receiving circuit for receiving and outputting a sync pulse signal from a red indicator light sync signal line in each relay board,
Asynchronous signal generating circuit that generates and outputs an asynchronous pulse signal, receives signals from the synchronous signal receiving circuit and the asynchronous signal generating circuit, and outputs an asynchronous pulse signal from the synchronous pulse signal when receiving a selection signal A switching circuit for switching so that the bypass control circuit transmits the failure information received from the amplification circuit to the disaster prevention board, and a disaster prevention device operation / monitoring control circuit,
Switching is performed in response to a selection control command for selecting a non-synchronized signal generating circuit for relay boards after the abnormal relay board from the disaster prevention board that has received failure information from the disaster prevention equipment operation / monitoring control circuit of at least two consecutive relay boards. The tunnel disaster prevention equipment according to claim 1 or 2, further comprising a selection control circuit that outputs a selection signal that causes the circuit to output a non-synchronized pulse signal. 4. A sync signal receiving circuit for receiving and outputting a sync pulse signal from a red indicator sync signal line in each relay board,
Asynchronous signal generating circuit that generates and outputs an asynchronous pulse signal, receives signals from the synchronous signal receiving circuit and the asynchronous signal generating circuit, and outputs an asynchronous pulse signal from the synchronous pulse signal when receiving a selection signal A switching circuit for switching to, and a disconnection monitoring circuit for monitoring disconnection from the sync pulse signal of the red indicator light sync signal line input to the relay board,
A disconnection abnormality determination circuit that determines whether or not there is a disconnection from the detection information detected by the disconnection monitoring circuit, a disaster prevention device operation / monitoring control circuit that transmits the disconnection information determined by the disconnection abnormality determination circuit to the disaster prevention panel, and a relay panel disaster prevention Selection from the disaster prevention panel that received disconnection information from the equipment operation / monitoring control circuit to select the non-synchronized signal generation circuit for the relay panel after the abnormal relay panel. The tunnel disaster prevention equipment according to claim 1, further comprising a selection control circuit that outputs a signal.