JP3196091B2 - Disaster prevention equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to fire prevention equipment, and more particularly to water discharge control for fire prevention equipment such as a water spray fire extinguisher installed in a tunnel.

[0002]

2. Description of the Related Art Generally, a disaster prevention facility for a tunnel is a centralized type in which a plurality of monitoring ranges are centrally monitored by a single disaster prevention panel, and when a fire occurs, the disaster prevention panel controls an automatic valve in each monitoring range to extinguish a fire. However, centralized monitoring with one disaster prevention panel when the tunnel lengthens is difficult because the configuration of the disaster prevention panel becomes complicated and the disaster prevention panel becomes large.
There is a distributed type in which a relay panel is provided and the relay panel shares functions similar to those of the disaster prevention panel. Further, the line system includes a P type in which a monitoring range is divided into a large number and a dedicated line is specified for each of the divided sections, and an R type in which a common line is used in a plurality of sections. Although there are various methods as described above, in this description, a disaster prevention facility for a tunnel of a distributed type and an R type line will be described.

FIG. 6 is a schematic diagram of a conventional disaster prevention facility for a tunnel. In the figure, 1 is a power supply facility, 2 is a central disaster prevention board for centrally managing a disaster prevention board, a smoke exhaust facility, etc., 3 is a disaster prevention board, 4
Is a relay panel provided for each monitoring range, 5 is a detector provided in each section of each monitoring range, 6 is an automatic valve, 7 is provided in each section of each monitoring range, and 7 is an automatic valve. A plurality of water spray heads to which fire fighting water is supplied. In addition, the detector 5 and the automatic valve 6 are provided in each section divided for example every 50 m. The water spray fire extinguishing system, which is equipped with an automatic valve and a water spray head provided in the tunnel, extinguishes the fire by discharging mist-like water. Limited. In addition, the automatic valve input / output circuit that normally controls the automatic valve with a lock signal is locked so that water is not immediately released even if a fire occurs, and an open control signal that is a signal for opening the automatic valve The automatic valve is not opened unless two unlock signals for unlocking the lock are input to the automatic valve input / output circuit.

[0004] The operation of the conventional tunnel disaster prevention equipment configured as described above will be described. For example, if a fire occurs in the section of No. 4b-2 monitored by the relay panel 4b in the tunnel in the tunnel, the fire detector 5 in that section operates,
The relay board 4b that sends out the fire detection signal outputs a fire signal to which the address information such as the section number or the detector number is added to the disaster prevention board 3 via the transmission line. This fire signal is received by the disaster prevention panel 3, and the central disaster prevention panel 2 where the tunnel manager is always present has N
In addition to notifying that the fire detector 5 of the section o.4b-2 has detected the fire occurrence, the section (No.4b-2) to which water is to be discharged from the fire occurrence section is automatically or manually determined. With this determination, a pump (not shown) is driven to be ready for water discharge. Next, when the lock release signal from the central disaster prevention board 2 is input or the lock release switch of the switch unit 11 of the disaster prevention board 3 is pressed, the disaster prevention board 3 controls the relay valve 4b that controls the automatic valve in the determined water discharge section. Via a transmission line, outputs an automatic valve control command signal for opening the automatic valve 6 to which the section information is added, and opens the automatic valve 6 to release the water spray head 7.
Release water from the mist. When an automatic valve closing switch (not shown) provided on the disaster prevention panel 3 or the central disaster prevention panel 2 is pressed, the relay panel 5 outputs an automatic valve control command signal for closing the automatic valve via a transmission line. Then, the automatic valve 6 is closed. Such a conventional tunnel disaster prevention equipment includes a disaster prevention board 3
Without transmitting the lock signal or unlock signal to the relay panel 4, the relay panel 4 determines the automatic valve control command signal from the disaster prevention board 3, and if the automatic valve control command signal is the open control command, the chain As an unlocked type, there is a type in which a lock release signal is output to an automatic valve input / output circuit instead of the disaster prevention board 3 to discharge water.

FIG. 7 is a schematic configuration diagram of a conventional tunnel disaster prevention facility using a distributed type of such a system. In this figure, 1
One relay board 4 is shown, and the transmission / reception circuit will be omitted.
In the figure, reference numeral 10 denotes a disaster prevention board 3 (also referred to as a distributed reception board).
MPU (microcomputer) provided in the
An automatic water discharge control processor, a manual water discharge control processor, a signal determination processor, an AND processor, and the like are provided. In the AND processing of the AND processing unit of the MPU 10, an AND operation is performed between a water discharge command from an automatic water discharge control processing unit, a manual water discharge control processing unit, and the like, and a lock release command from a signal determination processing unit. It is output to the relay board 4 as a control command signal. Reference numeral 11 denotes a switch provided on the disaster prevention panel 3, which normally outputs a lock signal to the signal determination processing unit. When this switch is pressed during a fire, the lock release signal is determined instead of the lock signal. Output to the processing unit. This switch is also provided on the central disaster prevention board 2, and can output the unlock signal for the first time when the administrator presses it. Reference numeral 15 denotes an MPU provided in the relay panel 4. The MPU 15 is a transmission processing unit that transmits a fire detection signal from the fire detector 5 to the disaster prevention panel 3, and receives an automatic valve control command signal from the disaster prevention panel 3. There is provided a reception processing unit for outputting an open control command for opening the automatic valve 6, a lock command, a lock release command, a close control command, and the like based on the automatic valve control command signal. When the automatic valve control command signal from the disaster prevention board 3 is an open control command, the reception processing unit determines that there is at least a lock release command and automatically inputs the unlocking command in place of the disaster prevention board 3. Output to the output circuit. 16 is MP
A closing control unit that closes the automatic valve 6 according to a closing control command from U15. Reference numeral 17 denotes an opening control unit that opens the automatic valve 6 in response to an opening control command from the MPU 15. Reference numeral 18 normally sets the contact to an open state, closes the contact with the input of the unlock signal from the MPU 15, and
This is a hard contact that opens the hard contact when a closing control command is input in place of the unlock signal from.

The operation of the above-described conventional disaster prevention equipment for a tunnel will be described. For example, when the fire detector 5 detects a fire and outputs a fire detection signal to the relay panel 4, the relay panel 4 receives the fire detection signal, performs a fire determination process, and changes the address of the fire detector 5. The added fire signal is transmitted to the disaster prevention board 3 via a transmission cable. And disaster prevention board 3
Then, the fire signal is transmitted to the central disaster prevention board 2, and when the unlock signal is transmitted from the central disaster prevention board 2 to the disaster prevention board 3 or when the switch unit 11 is pressed, the signal determination processing of the MPU 10 of the disaster prevention board 3 is performed. The section outputs the unlock signal to the AND processing section. At this time, based on the fire signal, the automatic water discharge control processing unit, the manual water discharge control processing unit, and the like of the MPU 10 AND the water discharge command.
If it has been output to the processing unit, the AND processing unit outputs the logical product of the two as an automatic valve control command signal to the relay board that controls the automatic valve to be opened. The automatic valve control command signal in this case is an open control command. The reception processing unit of the MPU 15 of the relay panel 4 that has received the automatic valve control command signal outputs the open control command to the open control unit 17 and, in the case of the open control command, determines that the lock has been unlocked. In place of the disaster prevention board 3, a lock release signal is output to the hard contact 18 to close the open contact and release the lock state, and the open control unit 17 sends the open control signal to the automatic valve 6. Output,
The automatic valve 6 was opened to discharge water from the water spray head 7.

[0007]

In the above-described conventional disaster prevention equipment for a tunnel, when a fire occurs in the tunnel, the automatic valve 6 is driven to discharge mist of water from the water spray head 7 so that the fire is prevented. However, when a car is running in a tunnel, the mist of water makes it impossible to see the front, and a separate fire may occur due to a rear-end collision or the like. For this reason, the automatic valve 6 for driving the water spray head 7 is normally set in a so-called locked state so that water is not immediately discharged even if a fire occurs. The automatic valve 6 is opened only when an open control signal is output to the automatic valve 6. Therefore, in consideration of safety, when the unlocking signal and the opening control signal are aligned, the automatic valve 6 is opened to discharge water from the water spray head 7. However, if the MPU 15 of the relay board 4 goes out of control due to, for example, a power failure or lightning strike, the relay board 4 itself outputs a unlock signal and an open control signal to unlock the automatic valve 6 and discharge water into the tunnel. There was a problem that it was very dangerous.

The present invention has been made in order to solve the above problems, and an object of the present invention is to provide a disaster prevention facility for a tunnel which does not discharge water even when an MPU of a relay board runs away.

[0009]

According to the present invention, there is provided a tunnel disaster prevention facility comprising: a relay panel for controlling and monitoring disaster prevention terminal devices such as a fire detector and a water spray fire extinguishing device; a drive control circuit for driving and controlling the disaster prevention terminal devices; A control check circuit that outputs a cutoff release signal only when a predetermined coded signal is input,
A shutoff circuit that outputs a control command signal from the disaster prevention board to the drive control circuit only when a shutoff release signal from the control check circuit is input; And a command control unit that outputs a predetermined coded signal to the control check circuit when a control command signal is input from the controller.

The command control section of the relay board outputs a control command signal from the disaster prevention board to the shutoff circuit and controls a predetermined coded signal and a pulse signal when the control command signal from the disaster prevention board is input. The relay board control check circuit may be configured to output a cutoff release signal only when a predetermined coded signal and a pulse signal are input.

Further, the command control section of the relay board outputs a control command signal from the disaster prevention board to the shut-off circuit and, when the control command signal from the disaster prevention board is input, only a predetermined final code is delayed. A signal may be output to a control check circuit, and the control check circuit of the relay panel may be configured to output a cutoff release signal only when a coded signal obtained by delaying only the predetermined final code is input. Good. Furthermore, the shutoff circuit of the relay board outputs a control command signal from the fire prevention board to the drive control circuit only when a shutoff release signal from the control check circuit and a lock release signal from the fire prevention board are input. May be configured.

[0012]

According to the present invention, when the command control section of the relay board receives a control command signal from the disaster prevention board, it outputs a control command signal from the disaster prevention board to the shutoff circuit. When the signal is input, it does not open, and the control command signal is not sent to the drive control circuit, so that the disaster prevention terminal device is not driven. When the command control unit of the relay board receives the control command signal from the disaster prevention board, it outputs the control command signal from the disaster prevention board to the shutoff circuit and a predetermined code when the control command signal from the disaster prevention board is input. Output to the control check circuit. The control check circuit outputs a cutoff release signal to the cutoff circuit only when the predetermined coded signal is input. For the first time, the shut-off circuit is opened to output a control command signal from the disaster prevention board to the drive control circuit, and the disaster prevention terminal device is driven by the drive control signal of the drive control circuit. At one time, the automatic valve is opened and water is discharged from the fire extinguishing head to extinguish the fire.

However, when the command control unit of the relay board runs out of control, the command control unit rarely outputs a predetermined coded signal to the control check circuit, and other signals are output to the control check circuit. Therefore, the control check circuit does not output the cutoff release signal to the cutoff circuit. Therefore, when the command control section of the relay board goes out of control, the shutoff circuit remains closed, and even if a control command signal is output from the runaway command control section to the shutoff circuit, the control command signal is sent to the drive control circuit. There is no output, so that the disaster prevention terminal device is not accidentally driven.

Further, the command control section of the relay board outputs a control command signal from the disaster prevention board to the cutoff circuit and controls a predetermined coded signal and a pulse signal when the control command signal from the disaster prevention board is input. Output to the circuit, and the control check circuit outputs the cutoff release signal only when the predetermined coded signal and pulse signal are input at the same timing, so that if the command control unit runs away, the command control unit controls The probability that a predetermined coded signal is output to the check circuit is reduced, and the control check circuit does not output the cutoff release signal to the cutoff circuit unless it is output at the same timing as the pulse signal. The probability that the disaster prevention terminal device will not be erroneously driven when the command control unit runs away increases due to the addition of the pulse signal.

Further, the command control section of the relay board outputs a control command signal from the disaster prevention board to the shut-off circuit, and when the control command signal from the disaster prevention board is input, only a predetermined final code is delayed. A signal is output to the control check circuit, and the control check circuit outputs a cutoff release signal only when a coded signal delayed only by a predetermined final code is input, so that a command is issued when the command control unit goes out of control. Since the control unit has a very low probability of outputting a coded signal in which only a predetermined final code is delayed to the control check circuit, the control check circuit does not output a cutoff release signal to the cutoff circuit even if other signals are output, When the command control unit of the command control unit of the relay board goes out of control, the probability that the disaster prevention terminal device is not erroneously driven is increased by delaying the final code.

Still further, the shutoff circuit of the relay board sends the control command signal from the fire prevention board to the drive control circuit only when the shutoff release signal from the control check circuit and the unlock signal from the fire prevention board are input. Because it is output, not only the control command signal from the disaster prevention panel but also the unlock circuit is not checked unless it receives the unlock signal, so double check is made so that the malfunction prevention terminal equipment is erroneously driven. Is prevented. Moreover, even when the command control unit of the relay board runs away, the disaster prevention terminal device is not erroneously driven.

[0017]

【Example】

Embodiment 1 FIG. FIG. 1 is a schematic configuration diagram of a first embodiment of the present invention, and FIG. 2 is a block diagram showing a main part of the first embodiment. In the figure, the same components as those of the conventional example are denoted by the same reference numerals, and the description of the components is omitted. Reference numeral 20 denotes a part of the MPU 15 of the relay board 4, which receives a control command signal from the disaster prevention board 3 and outputs a predetermined coded signal stored in the ROM when the control command signal is input. This is a reception processing unit that is a command control unit that performs the operation. Reference numeral 20a denotes a receiving unit of the reception processing unit 20 which inputs and outputs a control command signal from the disaster prevention board 3, and 20b denotes a predetermined coded signal such as 4-bit 1001 when the control command signal from the disaster prevention board 3 is input. This is a code generation circuit of the reception processing unit 20 that generates and outputs a coded signal.
Reference numeral 21 denotes a control check circuit that outputs a cutoff release signal only when a predetermined coded signal is input from the code generation circuit 20b of the reception processing unit 20. 21a determines whether the signal from the code generation circuit 20b is a predetermined coded signal, for example, two inverting elements and one AND
A code determination circuit of a control check circuit 21 including elements, and a code determination circuit 21a is a code generation circuit 2
This is a control output circuit of the control check circuit 21 that outputs a cutoff release signal when receiving a determination signal that determines that the signal from 0b is a predetermined coded signal. As described above, the predetermined coded signal is for causing the control check circuit 21 to output the cutoff release signal.
If it is a bit, only one of the 15 signals can output the cutoff release signal. Reference numeral 22 denotes a shutoff circuit that outputs a control command signal from the receiving unit 20a of the reception processing unit 20 only when a shutoff release signal from the control output circuit 21b of the control check circuit 21 is input. An automatic valve input / output circuit 23 is a drive control circuit that receives a control command signal from the shutoff circuit 22 and outputs a drive signal to, for example, the automatic valve 6 that is a disaster prevention terminal device.

Next, the operation of the above embodiment will be described with reference to FIGS. For example, when a fire occurs in a section in a tunnel, the fire prevention panel 3 controls the automatic valve of the water discharge section to open the automatic valve 6 of the section and discharge water in a mist form from the water spray head 7. The automatic valve 6 which is one of the control command signals via the transmission line to the relay board 4 to be controlled
To send an automatic valve control command signal to open the valve. In the relay board 4, when the reception processing section 20 receives the automatic valve control command signal from the disaster prevention board 3, the receiving section 20 a outputs the automatic valve control command signal to the cutoff circuit 22. However, the cutoff circuit 22
Then, it does not open just by inputting the automatic valve control command signal,
Since the automatic valve control command signal is not sent to the automatic valve input / output circuit 23, the automatic valve 6 is not driven to open. Therefore,
When the reception processing unit 20 of the relay board 4 receives the automatic valve control command signal from the disaster prevention board 3, the receiving unit 20a outputs the automatic valve control command signal to the shutoff circuit 22 and the code generation circuit 20b outputs the automatic valve control command. When a signal is input, a predetermined coded signal for outputting a cutoff release signal from the control check circuit 21 is created and output to the control check circuit 21. Code determination circuit 21a of control check circuit 21
Determines whether the input signal is a predetermined coded signal. The control output circuit 21b determines whether the input signal is a coded signal.
Only when a determination signal that determines that 1a is a predetermined coded signal is input, a cutoff release signal is output to the cutoff circuit 22. Only at this time, the shutoff circuit 22 is opened and the automatic valve control command signal from the receiving unit 20a is transmitted to the automatic valve input / output circuit 2.
3, the automatic valve 6 which is one of the disaster prevention terminal devices is opened by the drive signal of the automatic valve input / output circuit 23, and the water is sprayed from the water spray head 7 to extinguish the fire.

When the MPU 15 of the relay board 4 runs out of control, the probability that the code generation circuit 20b of the reception processing unit 20 outputs a predetermined coded signal to the control check circuit 21 is extremely small. All 1 or 0
Is output to the control check circuit 21, so that the control check circuit 21 does not output the cutoff release signal to the cutoff circuit 22. Therefore, when the MPU 15 of the relay board 4 goes out of control, the cutoff circuit 22 remains closed, and the control command signal from the command control unit 20 that has gone out of control runs the cutoff circuit 22.
, The control command signal is not output to the automatic valve input / output circuit 23, the automatic valve 6 is prevented from being opened by mistake, and erroneous water discharge from the water spray head 7 is prevented. . Note that the larger the number of codes (the number of bits) of the predetermined coded signal output from the code generation circuit 20b of the reception processing unit 20, the more the code is output from the code generation circuit 20b of the reception processing unit 20 when the MPU 15 runs away. The probability is lower.

Embodiment 2 FIG. FIG. 3 is a block diagram showing a main part of a second embodiment of the present invention. In this embodiment, the reception processing unit 20 generates a pulse signal at predetermined intervals when a control command signal is input from the disaster prevention board 3 in addition to the reception unit 20a and the code generation circuit 20b, and outputs the pulse signal.
have. In addition, the control check circuit 21 shuts off the control output circuit 21b when the judgment signal of the code judgment circuit 21a and the pulse signal of the pulse generation circuit 20c are input at the same timing in addition to the code judgment circuit 21a and the control output circuit 21b. Control reception circuit 2 that outputs a release command signal
The control output circuit 21b outputs a cutoff release signal to the cutoff circuit 22 in response to the cutoff release command signal. Other configurations are the same as those of the first embodiment.

In this embodiment, the receiving section 20a of the reception processing section 20 of the relay board 4 outputs an automatic valve control command signal from the disaster prevention board 3 to the shutoff circuit 22 and a code when the automatic valve control command signal is input. The creation circuit 20b outputs a predetermined coded signal for outputting a cutoff release signal from the control check circuit 21 to the code determination circuit 21a of the control check circuit 21, and the pulse creation circuit 20c controls the pulse signal by the control check circuit 21. Output to the reception circuit 21c. The control reception circuit 21c of the control check circuit 21 outputs a cutoff release command signal to the control output circuit 21b only when the determination signal of the code determination circuit 21a and the pulse signal of the pulse generation circuit 20c are input at the same timing, The control output circuit 21b outputs a cutoff release signal to the cutoff circuit 22.
Also, when the MPU 15 runs away, the probability that the code generation circuit 20b of the reception processing unit 20 outputs a predetermined coded signal is extremely small, and even if the code generation circuit 20b outputs the signal, it is output at a predetermined interval of the pulse generation circuit 20c. Unless the control reception circuit 21c is input at the same timing as the pulse signal, the control reception circuit 21c outputs the cutoff release command signal to the control output circuit 21c.
b, the control output circuit 21b does not output the cutoff release signal to the cutoff circuit 22. For this reason, when the MPU 15 of the relay board 4 runs away, the automatic valve 6 is not accidentally opened, and the probability of preventing erroneous water discharge from the water spray head 7 is increased by the addition of the pulse signal. It is a thing.

Embodiment 3 FIG. FIG. 4 is a block diagram showing a main part of a third embodiment of the present invention. In this embodiment, the reception processing unit 20 has a pulse delay circuit 20d for delaying, for example, only the last code of the coded signal of the code generation circuit 20b, in addition to the reception unit 20a and the code generation circuit 20b.
Further, the code determination circuit 21d of the control check circuit 21 of this embodiment includes two AND elements and one latch circuit, and outputs a determination signal only when a predetermined coded signal obtained by delaying only the last code is input. Control output circuit 21b
Is output to Other configurations are the same as those of the first embodiment.

In this embodiment, the reception processing unit 20 of the relay panel 4
When the code generation circuit 20b outputs a predetermined coded signal to the control check circuit 21, the pulse delay circuit 20b
d delays only the predetermined final code. And MP
When U15 goes out of control, the probability that the code generation circuit 20b of the reception processing unit 20 outputs a predetermined coded signal is extremely small.
Unless the last code of the predetermined pulse signal d is delayed and input to the AND element B, the code determination circuit 21d does not output the determination signal to the control output circuit 21b, so that the control output circuit 21b releases the cutoff to the cutoff circuit 22. Since no signal is output, if the MPU 15 of the relay board 4 goes out of control, the automatic valve 6 will not be opened by mistake, and the probability of preventing erroneous water discharge from the water spray head 7 will delay the final code. Is higher.

Embodiment 4 FIG. FIG. 5 is a schematic configuration diagram of a fourth embodiment of the present invention. In this embodiment, a transmission circuit 30 for transmitting a lock signal or an unlock signal is provided on the disaster prevention board 3.
Further, the relay board 4 is provided with a lock / unlock relay circuit 35 and a lock release determination circuit 36. Lock / Lock release relay circuit 35
Receives at least the lock signal or unlock signal from the disaster prevention board 3, reproduces it and outputs it to the unlock determination circuit 36, amplifies the reproduced lock signal or unlock signal, and amplifies the next signal. It is sent to the next relay panel 4 via the lock / unlock cable. Further, the lock / unlock relay circuit 35 monitors the disconnection of the lock / unlock cable, and when the disconnection occurs, the content of the disconnection is transmitted to another cable, for example, an automatic valve control signal or a signal for the Kansai signal. It is sent to the disaster prevention board side via a cable, and when a power supply abnormality or its own abnormality occurs, it is not reproduced and amplified by a bypass circuit (not shown) including a switching element such as a relay contact and the next relay panel as it is. Then, a lock signal or an unlock signal is sent to 4. The lock release determination circuit 36 determines whether or not the lock signal is output from the lock signal or the unlock signal from the lock / unlock relay circuit 35, and the lock signal is output. If it is determined that there is no lock signal, the unlock signal is output to the cutoff circuit 22.

The operation of this embodiment will be described. For example, when a fire occurs in the section of the tunnel where the fire detector 5 connected to the relay panel 4 is arranged and the fire detector 5 operates, the MPU 15 of the relay panel 4 transmits the section number and the fire signal. The information is transmitted to the disaster prevention board 3 via the transmission processing unit. Next, the automatic water discharge control processing unit, the manual water discharge control processing unit, and the like of the MPU 10 of the disaster prevention board 3 determine a water discharge section to be discharged, and the notification processing unit notifies the central disaster prevention panel 2 and the like. When the lock release switch is pressed by the lock release switch of the central disaster prevention board 2 or the switch unit 11 of the disaster prevention board 3 and a lock release signal is obtained, the signal determination processing unit of the MPU 10 of the disaster prevention board 3
The unlock instruction is output to the AND processing unit. Next, AND
The processing unit sends an automatic valve control command signal, which is a logical product of the unlock command and the water discharge command, to the relay board 4 via the transmission cable. Further, the transmission circuit 30 sends the unlock signal to the relay panel 4 via the unlock cable.

Next, upon receiving the automatic valve control command signal from the disaster prevention board 3, the reception processing unit 20 of the relay board 4
The automatic valve control command signal is output to the control check circuit 21 when the automatic valve control command signal is input. The control check circuit 21 determines whether the input signal is a predetermined coded signal, and outputs a cutoff release signal to the cutoff circuit 22 only when it is determined that the input signal is a predetermined coded signal. Further, the lock / unlock relay circuit 35 of the relay board 4 receives and reproduces the unlock signal from the disaster prevention board 3, outputs the unlock signal to the unlock determination circuit 36, and amplifies it. To the next relay board. When the signal from the unlocking relay circuit 35 is determined to be the unlocking signal, the unlocking determination circuit 36 outputs an unlocking release signal to the shutoff circuit 22. At this time, that is, the control check circuit 21 and the lock release relay circuit 35
The shutoff circuit 22 is opened only when the shutoff release signal is input from the above, the automatic valve control command signal from the reception processing unit 20 is output to the automatic valve input / output circuit 23, and the drive signal of the automatic valve input / output circuit 23 causes the disaster prevention. The automatic valve 6, which is one of the terminal devices, is opened to discharge water from the water spray head 7 to extinguish the fire. Therefore, if not only the automatic valve control command signal but also the unlocking signal is not received from the disaster prevention board 3, the shutoff circuit 22 is not opened and the double check is performed, and the erroneous water discharge from the water spray head 7 is strictly checked. Will be prevented.

When the MPU 15 of the relay board 4 goes out of control, the reception processing unit 20 has a very low probability of outputting a predetermined coded signal to the control check circuit 21, and other signals are output to the control check circuit 21. Since the control check circuit 21 does not output the shutoff release signal to the shutoff circuit 22, the shutoff circuit 22 remains closed, and the shutoff circuit 22 receives the automatic valve control command signal from the disaster prevention board 3 and outputs the shutoff signal to the shutoff circuit 2.
2, the automatic valve control command signal is not output to the automatic valve input / output circuit 23 and the automatic valve 6
It is needless to say that the water spray head 7 is prevented from being opened by mistake and the erroneous water discharge from the water spray head 7 is prevented. Further, even if a predetermined coded signal is output, the shutoff circuit 22 does not open unless the lock release switch of the switch unit 11 provided on the disaster prevention board side is pressed, so that erroneous water discharge can be further prevented. In each of the above embodiments, the relay panel 4 is described as one. However, if the relay panel 4 has the same function even if the relay panel 4 is provided in plurals, water is erroneously discharged even if the MPU 15 runs away. Never.

[0028]

As described above, according to the present invention, when the command control unit of the relay board receives a control command signal from the disaster prevention board,
A control command signal from the disaster prevention board is output to the shutoff circuit, and a predetermined coded signal is output to the control check circuit when the control command signal is input from the disaster prevention board, and the control check circuit outputs the predetermined coded signal. Only when is input, a shutoff release signal is output to the shutoff circuit, and the shutoff circuit is opened to output a control command signal from the disaster prevention board to the drive control circuit,
The disaster prevention terminal device is driven by the drive control signal of the drive control circuit. For example, when the disaster prevention terminal device is an automatic valve, the automatic valve is opened, water is discharged from the water spray head, and the fire is extinguished. Also, if the command control unit of the relay board goes out of control, the command control unit has a very low probability of outputting a predetermined coded signal to the control check circuit, and control is performed even if other signals are output to the control check circuit. Since the check circuit does not output the cutoff release signal to the cutoff circuit, the cutoff circuit remains closed. Even if a control command signal is output from the runaway command control unit to the cutoff circuit, the control command signal is sent to the drive control circuit. There is no output, and there is no possibility that the disaster prevention terminal device is erroneously driven. For example, there is an effect that the automatic valve is opened and water is prevented from being discharged from the water spray head.

Further, the command control section of the relay board outputs a control command signal from the disaster prevention board to the shutoff circuit and controls a predetermined coded signal and pulse signal when the control command signal from the disaster prevention board is input. Output to the circuit, and the control check circuit outputs the cutoff release signal only when the predetermined coded signal and pulse signal are input at the same timing, so that if the command control unit goes out of control, the command control unit controls The probability that a predetermined coded signal is output to the check circuit is extremely small, and even if it is output, the control check circuit does not output the cutoff release signal to the cutoff circuit unless it is output at the same timing as the pulse signal. Has the effect that the probability of no erroneous driving is increased by the addition of the pulse signal.

Further, the command control section of the relay board outputs a control command signal from the disaster prevention board to the shut-off circuit, and when the control command signal from the disaster prevention board is input, only a predetermined final code is delayed. A signal is output to the control check circuit, and the control check circuit outputs a cutoff release signal only when a coded signal delayed only by a predetermined final code is input, so that a command is issued when the command control unit goes out of control. The control unit has a very small probability of outputting a coded signal in which only the predetermined final code is delayed to the control check circuit,
Even if other signals are output, the control check circuit does not output the cutoff release signal to the cutoff circuit, so the probability that the disaster prevention terminal device will not be accidentally driven will be increased by delaying the final code. Having.

Further, the shut-off circuit of the relay board sends the control command signal from the fire prevention board to the drive control circuit only when the shut-off release signal from the control check circuit and the unlock signal from the fire prevention board are input. Because it is output, not only the control command signal from the disaster prevention panel but also the unlocking circuit is not checked unless it receives the unlock signal, so it is double checked so that the malfunction prevention terminal equipment is erroneously driven. In addition, even if the command control unit of the relay board runs away, the disaster prevention terminal device is prevented from being erroneously driven.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a first embodiment of the present invention.

FIG. 2 is a block diagram showing a main part of the embodiment.

FIG. 3 is a block diagram showing a main part of a second embodiment of the present invention.

FIG. 4 is a block diagram showing a main part of a third embodiment of the present invention.

FIG. 5 is a schematic configuration diagram of a fourth embodiment of the present invention.

FIG. 6 is a schematic configuration diagram of a conventional tunnel disaster prevention facility.

FIG. 7 is a schematic configuration diagram of a conventional disaster prevention facility for a tunnel.

[Explanation of symbols]

 3 Disaster Prevention Board 4 Relay Board 6 Automatic Valve (Disaster Prevention Terminal Equipment) 15 MPU 20 Reception Processing Unit (Command Control Unit) 21 Control Check Circuit 22 Shutoff Circuit 23 Automatic Valve I / O Circuit (Drive Control Circuit)

Continuation of front page (56) References JP-A-4-209093 (JP, A) JP-A-2-66698 (JP, A) JP-A-2-28798 (JP, A) JP-A-3-139790 (JP) , A) (58) Fields investigated (Int. Cl. ⁷ , DB name) G08B 17/00 A62C 37/00 G08B 29/18

Claims (5)

(57) [Claims] 1. A disaster prevention terminal device such as a fire detector or a fire extinguisher provided for each monitoring range, and a control command signal for controlling and monitoring the disaster prevention terminal device and for controlling the disaster prevention terminal device. In a disaster prevention facility comprising a relay board, the relay board is a drive control circuit that drives and controls the disaster prevention terminal device, and a control check circuit that outputs a cutoff release signal only when a predetermined coded signal is input, A shutoff circuit that outputs the control command signal to the drive control circuit only when a shutoff release signal is input from the control check circuit, and a control check circuit that outputs a predetermined coded signal when the control command signal is output to the shutoff circuit. Disaster prevention equipment characterized by comprising a command control unit for outputting to a user. 2. A disaster prevention terminal device such as a fire detector or a fire extinguishing device provided for each monitoring range, a relay panel for controlling and monitoring these disaster prevention terminal devices, and a relay panel for controlling the disaster prevention terminal device on the relay panel. In a disaster prevention facility comprising a disaster prevention board for transmitting a control command signal, the relay panel outputs a drive control circuit for driving and controlling a disaster prevention terminal device and a shutdown release signal only when a predetermined coded signal is input. A control check circuit, a cutoff circuit that outputs a control command signal from the disaster prevention board to the drive control circuit only when a cutoff release signal from the control check circuit is input, and a control command signal from the disaster prevention board to the cutoff circuit. Disaster prevention equipment, comprising: a command control unit that outputs a predetermined coded signal to a control check circuit when a control command signal is input from the disaster prevention board. 3. The command control unit outputs a control command signal from the disaster prevention board to a shut-off circuit, and when a control command signal from the disaster prevention board is input, sends a predetermined coded signal and a pulse signal to a control check circuit. 3. The disaster prevention equipment according to claim 2, wherein the control check circuit outputs a cutoff release signal only when a predetermined coded signal and a pulse signal are input. 4. The command control section outputs a control command signal from the disaster prevention board to a shutoff circuit and controls a coded signal delayed only by a predetermined final code when the control command signal from the disaster prevention board is input. 3. The disaster prevention equipment according to claim 2, wherein the control circuit outputs the cutoff release signal only when a coded signal obtained by delaying only the predetermined final code is input. 5. The interrupting circuit outputs a control command signal from the disaster prevention board to a drive control circuit only when a shutdown release signal from a control check circuit and a lock release signal from a disaster prevention board are input. The disaster prevention equipment according to claim 2, 3, or 4.