JP3106333B2 - Tunnel fire extinguishing system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fire extinguishing system for a tunnel, and more particularly to a process for preventing erroneous water discharge even if a computer runs away.

[0002]

2. Description of the Related Art In general, a fire extinguishing system for a tunnel is a centralized type in which a plurality of sections are centrally monitored by a single disaster prevention panel, and when a fire occurs, the disaster prevention panel controls an automatic valve in a fire generating section to extinguish a fire. In addition, centralized monitoring with a single 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 decentralized type that shares the same function as the board. A fire extinguishing system for a tunnel using this distributed type will be described.

FIG. 4 is a schematic diagram of a conventional fire extinguishing system for a distributed tunnel. 1 is a power supply equipment, 2 is a central disaster prevention panel for centrally managing a disaster prevention panel, tunnel lighting equipment, smoke exhaust equipment, etc., 3 is a disaster prevention panel, and 4 and 5 are provided for each predetermined section, and are controlled and monitored by the disaster prevention panel 3. 4b and 5b are detectors provided in each section, 6 and 7 are automatic valves provided in each section, 8a is a water spray head as a water discharge head for discharging water by driving the automatic valve 6, 9a is a water spray head that discharges water by driving the automatic valve 7. The detector 4b and the detector 5b are, for example, 50 tunnels.
It is provided for each section divided for each m. Although not shown, the relay boards 4 and 5 control and monitor a large number of detectors and automatic valves provided in a plurality of sections, respectively.

[0004] The water spray fire extinguishing system provided in the tunnel, which includes an automatic valve, a water spray head, etc., extinguishes a fire by discharging water in a mist state. Limited. In addition, the automatic valve control unit that controls the automatic valve is always locked by a lock signal 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. And two lock release signals for unlocking the lock are not input unless they are input to the automatic valve control unit.

The operation of the tunnel fire extinguishing system configured as described above will be described below. For example, when a fire occurs in the section of NO5-2 monitored by the relay panel 5 in the tunnel in the tunnel, the fire detector 5b in that section operates and sends a fire detection signal to the relay panel 5. Relay board 5
Outputs a fire signal with address information such as a section number or a detector number added to the disaster prevention board 3 via a transmission line. When the fire prevention panel 3 receives this fire signal, the central disaster prevention panel 2 where the tunnel manager and the like are always informed that the detector of the NO5-2 section has detected the fire occurrence, and discharges water from the fire occurrence section. The section (N02) to be operated is automatically determined. In addition, the worker in the disaster prevention board 3 may manually determine a section where water is to be discharged. With this determination, a pump (not shown) is driven to be ready for water discharge.

Next, a lock release signal is input to the disaster prevention panel 3 from the central disaster prevention panel 2 or a lock release switch (not shown) of the disaster prevention panel 3.
Is pressed, an automatic valve control command signal for opening the automatic valve to which the division information is added is output to the relay panel 5 for controlling the automatic valve of the determined water discharge section through the transmission line, and the automatic valve is opened. The water spray from the water spray head. When an automatic valve closing switch (not shown) provided on the disaster prevention board 3 or the central disaster prevention board 2 is pressed, an automatic valve control command signal for closing the automatic valve via the transmission line is transmitted to the relay panel 5. Outputs and closes the automatic valve. There are generally two types of such fire extinguishing systems. In the first method, the lock signal or the unlock signal is not sent from the disaster prevention board to the relay board, but the relay board determines the automatic valve control command signal from the disaster prevention board, and the automatic valve control command signal is the open control command. If so, it is determined that the lock has been released, and a lock release signal is output to the automatic valve control unit in place of the disaster prevention board to discharge water. In the second method, water is released by transmitting a lock release signal and an automatic valve control command signal to a relay panel. The configuration of the disaster prevention board and the relay board of such two systems will be specifically described.

FIG. 5 is a schematic configuration diagram showing a concrete example of a first conventional distributed type. In the figure, the description will be made with one relay panel and a transmission / reception circuit omitted. In the figure, 2
0 is the M provided for the disaster prevention board 3 (also referred to as a distributed receiver).
The PU is provided with automatic water discharge processing, manual water discharge control processing, signal determination processing, AND processing, and the like. The AND processing of the MPU 20 is performed by ANDing a water discharge instruction from an automatic water discharge processing, a manual water discharge control processing, and the like, and a lock release instruction from the signal determination processing.
And outputs the result to the relay panel 5 as an automatic valve control command signal. Reference numeral 25 denotes an MPU provided in the relay panel 5, and the MPU 25 receives a fire detection signal from the detector and outputs the signal to the disaster prevention panel 3.
, An automatic valve control command signal from the disaster prevention board 3, and based on the automatic valve control command signal, an opening control command for opening the automatic valve 7, a lock command, and a lock release command. And a receiving process for outputting a closing control command and the like.
In this reception process, when the automatic valve control command signal from the disaster prevention board 3 is an open control command, it is determined that there is at least a lock release command, and the automatic valve control unit 27.

Reference numeral 21 denotes a switch provided on the disaster prevention board 3, which normally outputs a lock signal for signal determination processing. In the event of a fire, when this switch is pressed, a lock release signal is used instead of the lock signal. Is output to the signal determination process. 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 26 denotes a closing control unit that closes the automatic valve in response to a closing control command from the MPU 25. 27 is an automatic valve control unit. The automatic valve control unit 27 normally keeps the contact open, keeps the automatic valve in an OFF state (hereinafter referred to as a locked state),
With the input of the opening control command and the unlocking signal from U25, the contact is closed to unlock the automatic valve and discharge water. When a close control command is input from the MPU 25 instead of the open control command, the hard contact is opened to lock the automatic valve.

The operation of the conventional tunnel disaster prevention system as described above will be described below. In this case, the process of opening the automatic valve and discharging water when the contact of the automatic valve control unit 27 is in the open state and the automatic valve is in the locked state will be described. For example, when the detector detects a fire and outputs a fire detection signal to the relay panel 4, the relay panel 4
Receives the fire detection signal and performs a fire determination process, and then transmits a fire signal to which the address of the detector is added to the disaster prevention board 3 via a transmission cable. Then, the notification processing of the disaster prevention board 3 transmits this fire signal to the central disaster prevention board 2, and when the unlocking signal is sent from the central disaster prevention board 2 to the disaster prevention board 3, or the switch 21 of the disaster prevention board 3 is pressed. When it is, M of disaster prevention board 3
The signal determination process of the PU 20 outputs the unlock signal to the AND process. At this time, if the water discharge command is output to the AND process by the automatic water discharge control process, the manual water discharge control process, or the like of the MPU 20, the AND process uses the logical product of both as an automatic valve control command signal to determine the automatic valve to be opened. Output to the control panel. The automatic valve control command signal in this case is an open control command.

Next, the MPU 25 of the relay panel 4 receives the open control command, outputs the open control command to the automatic valve control unit 27, and judges that the open control command is unlocked in the case of the open control command. Automatic lock control unit 2 issues lock release command in place of disaster prevention board 3
7 is output. The automatic valve control unit 27 closes the contact in the open state to release the lock of the automatic valve and discharge water from the water spray head in response to the input of the opening control command and the unlocking command. FIG. 6 is a schematic configuration diagram showing a concrete example of the related art using the distributed type of the second system. In the figure, reference numeral 30 denotes an MPU provided on the disaster prevention board. This MP
U30 does not include an AND process, sends an automatic valve control command signal such as a water discharge command or a water discharge stop command from an automatic water discharge process, a manual water discharge process, or the like via a transmission cable. The lock signal or the unlock signal from the central disaster prevention board 2 is output to the relay board 4 via the transmission cable.

Reference numeral 31 denotes an MPU provided in the relay board.
The MPU 31 inputs an automatic valve control command signal, a lock release signal, a lock signal, and the like from the disaster prevention board 3 via a transmission cable. If the automatic valve control command signal is an open control command, the MPU 31 inputs a lock release signal. , The opening control command and the unlocking signal are output to the automatic valve control unit 27. That is, in the second method, the locked state of the automatic valve control unit 27 is released by causing the receiving process of the relay board 4 to perform the same AND as in the first method.

[0012]

The above-described conventional fire extinguishing system for a decentralized type tunnel activates an automatic valve when a fire occurs in the tunnel, and discharges a mist of water to stop the fire. Although it extinguishes a fire, when a car is running in a tunnel, the mist of water makes it impossible to see the front, and a fire may occur separately due to a rear-end collision or the like. For this reason, in order to prevent water from being immediately discharged even if a fire occurs, the automatic valve control unit locks the automatic valve that drives the water spray head and unlocks the automatic valve control unit when the automatic valve is opened. The lock state is released only when a signal and an open control signal are input.
Two methods are adopted. The first method is MP of disaster prevention board
U takes the logical product of the lock release signal when the lock release switch of the disaster prevention board is pressed or the lock release signal from the central disaster prevention board and the water discharge command from the water discharge process, and generates an automatic valve control command signal. Output. That is, the signal is output to the relay panel as an automatic valve control command signal for opening the automatic valve only when both signals are present. When the automatic valve control command signal is input and the automatic valve control command signal indicates an open control command, the MPU of the relay panel determines that the lock is unlocked and replaces the disaster prevention panel. The lock release signal and the open control signal are output to the automatic valve control unit to release the lock state and open the automatic valve.

In the second system, the MPU of the disaster prevention board transmits a lock release signal when the lock release switch of the disaster prevention board is pressed or a lock release signal from the central disaster prevention board to the transmission cable directly to the relay board. And an automatic valve control command signal. Then, when the unlocking signal and the automatic valve control command signal are input to the relay panel, the unlocking state is released by outputting the unlocking signal and the opening control signal to the automatic valve control unit, and the water is discharged. Things. That is, the automatic valve control unit opens the automatic valve when the unlocking signal and the opening control signal are aligned in consideration of safety in either method. However, in either method, the MPU of the relay board releases the locked state of the automatic valve control unit.
If U goes out of control, even if a fire does not occur, an automatic valve control command signal and a lock release signal are output from the disaster prevention board to the relay board to release the lock and discharge water into the tunnel,
Also, when the MPU of the relay board runs away, the relay board itself outputs a unlock signal and an open control signal to release the lock state and discharge water into the tunnel, and both MPUs may run away, There was a problem that it was very dangerous. The present invention has been made to solve the above problems,
An object of the present invention is to obtain a fire extinguishing system for a tunnel in which even if an MPU of a disaster prevention board or an MPU of a relay board runs out of control, water is not released unless the MPU is actually unlocked.

[0014]

SUMMARY OF THE INVENTION A fire extinguishing system according to the present invention is provided.
The water discharge head for fire extinguishing is connected to the
The automatic valve whose closed state is locked by the signal and the automatic valve
Outputs automatic valve open signal to open automatic valve
And a disaster prevention panel connected to the relay panel
In the fire extinguishing system, the unlocking signal and automatic control
When two command signals are input, the automatic valve
A lock release judgment circuit that outputs a valve open signal is provided,
Separates the lock release signal and the automatic valve control command signal
Is output to In addition, the fire extinguishing system according to the present invention
Installations, substitute at least, are disposed at predetermined sections, and repeater panels which control monitoring automatic valve for supplying water from the pump to the detector and the water discharge head of the compartments provided in each compartment in a given compartment, repeater panels A fire extinguishing system consisting of a fire prevention panel that releases the lock state of the automatic valve in response to the transmission of a fire signal from the fire panel. The fire prevention panel detects that a fire has occurred in response to the input of a fire signal from the relay panel. A first microcomputer for notifying and transmitting an automatic valve control command signal for discharging water to a predetermined section where a fire has occurred to a relay board via a first transmission cable; and a lock release for releasing a locked state of the automatic valve. And a transmission circuit for transmitting the unlock signal to the relay board via the second transmission cable when the signal is input,
The relay panel sends a fire signal of the detector in the monitoring section to the disaster prevention panel via the first transmission cable, and outputs an open control command signal when receiving an automatic valve control command signal from the disaster prevention panel. A second microcomputer, a relay circuit for receiving and reproducing the unlock signal from the disaster prevention board via the second transmission cable, an open control command signal from the second microcomputer, and a lock from the relay circuit. When the solution signal is complete,
It comprises a lock release determination circuit that outputs an automatic valve opening signal, and an automatic valve control circuit that releases the locked state of the automatic valve in response to the input of the automatic valve opening signal. The relay circuit reproduces the unlocked signal, amplifies the unlocked signal, and sends the amplified signal to the next relay board. Further, when the unlock signal is input, the unlock determination circuit determines whether or not a lock signal for locking the automatic valve has been transmitted from the disaster prevention board. The automatic valve opening signal is output when the signal and the unlock signal from the relay circuit are aligned.

[0015]

In the present invention, the first microcomputer of the disaster prevention board determines the water discharge section in response to the input of the fire occurrence signal from the relay board, and sends the automatic valve control command signal via the first transmission cable. The signal is sent to the relay board, and the second microcomputer of the relay board outputs an open control command signal.

When a lock release signal for releasing the lock state of the automatic valve is input, the transmission circuit of the disaster prevention board sends the lock release signal to the relay board via the second transmission cable. Then, the relay circuit of the relay board receives and reproduces the unlock signal from the second transmission cable. The unlocking determination circuit outputs an automatic valve opening signal to the automatic valve control circuit when the opening control command signal from the second microcomputer and the unlocking signal from the relay circuit are complete. The automatic valve control circuit releases the locked state of the automatic valve according to the input of the automatic valve open signal.
The relay circuit reproduces the unlocked signal, amplifies the signal, and sends the amplified signal to the next relay board. Further, when the unlock signal is input, the unlock determination circuit determines whether or not the lock signal has been transmitted from the disaster prevention board. After confirming that there is no lock signal, the unlock control command signal and the relay and outputs the automatic valve open signal when the signal from the two systems of locking solutions signal from circuit is Tsu assortment.

[0017]

FIG. 1 is a schematic block diagram of a first embodiment of the present invention. In the figures, 2 to 27 correspond to FIGS.
Is similar to Reference numeral 35 denotes a transmission circuit provided on the disaster prevention board 3 for transmitting a lock signal or a lock release signal. Reference numeral 40 denotes an MPU according to the present invention provided in the relay board 4;
In U40, in addition to the transmission process, the fire determination process, and the like, at least when the automatic valve control command signal from the disaster prevention board 3 is input and the automatic valve control command signal indicates the opening control command,
An open control command signal is output to the AND circuit 45, and when a close control command is indicated, the close control command signal is output to the close control unit 2.
6 is output. 41 is a relay circuit. The relay circuit 41 receives at least the lock signal or unlock signal from the disaster prevention board 3 and reproduces and outputs the signal to the unlock determination circuit 43, and amplifies the reproduced lock signal or unlock signal. , The next lock
Send it to the next relay board via the cable for unlocking. In addition, the disconnection of the lock / unlock cable is monitored, and when the disconnection occurs, the content is transmitted to the disaster prevention board via another cable (for example, the transmission cable 51), and the power supply abnormality or the abnormality of the apparatus itself is performed. Is generated, the signal is sent to the next relay board by the bypass circuit 63 (see FIG. 2) provided in the relay circuit 41.

Reference numeral 42 denotes a lock release determination circuit. The lock release determination circuit 42 is provided in the relay board 4 and includes a lock release determination circuit 43 and an AND circuit 45. The lock release determination circuit 43 determines whether or not the lock signal is output from the relay circuit 41, and outputs a lock release signal when it is determined that the lock signal is not output. The AND circuit 45 is provided with an open control command signal from the MPU 40 and the unlock determination circuit 43.
And outputs an automatic valve opening control signal obtained by logical AND to the automatic valve control unit 27. The operation of the tunnel fire extinguishing system configured as described above will be described below. In this case, it is assumed that the lock switch of the switch unit 21 of the central disaster prevention board 2 or the disaster prevention board 3 is pressed and the relay circuit 41 outputs an OFF signal to the automatic valve control unit 27 to be in the locked state. Reference numeral 51 denotes a first transmission cable provided between the disaster prevention board 3 and the relay board for transmitting various signals, and 52 denotes a first transmission cable between the disaster prevention board 3 and the relay board and a subsequent relay board. 2 is a second transmission cable for a lock / unlock signal connected by (1). For example, when a fire occurs in a section in a tunnel where a detector connected to the relay board 4 is arranged and the detector operates, the M of the relay board 4 is activated.
The PU 40 sends the section number and the fire signal to the disaster prevention board 3 via a transmission process. Next, an automatic water discharge process, a manual water discharge process, or the like of the MPU 20 of the disaster prevention board 3 determines a water discharge section to be discharged, and a notification process notifies the central disaster prevention board 2 or the like. And
When the lock release switch of the central disaster prevention board 2 or the lock release switch of the switch unit 21 of the disaster prevention board 3 is pressed by an administrator or the like and a lock release signal is obtained, the signal determination process of the MPU 20 of the disaster prevention board 3 The unlock instruction is output to the AND processing. Next, in the AND process, an automatic valve control command signal, which is the logical product of the unlocking command and the water discharge command, is transmitted via the transmission cable 51 to the relay panel 4 that controls the automatic valve in the section where water is to be discharged. The transmission circuit 35 transmits the unlock signal to the cable 5.
2 to the relay board 4.

Next, the MPU 40 of the relay board 3 receives the automatic valve control signal, and outputs an open control command signal to the AND circuit 45 when the signal is an open control command. The relay circuit 41 of the relay board 3 receives and reproduces the unlock signal from the disaster prevention board 3, outputs the unlock signal to the unlock determination circuit 42, amplifies the unlock signal, and sends it to the next relay board. I do. Further, the relay circuit 41 of the relay board 4 is provided with an OF so that water is not discharged in any case while the lock signal is transmitted from the disaster prevention board 3.
Although the F signal is output to the automatic valve control unit 27, the OFF signal is stopped with the input of the unlock signal. Next, the unlocking determination circuit 43 of the lock release determination circuit 42 confirms that a lock signal for locking the automatic valve has not been transmitted from the disaster prevention board 3, and sends the unlock signal to the AND circuit 45. Output. The AND circuit 45 receives the open control command signal and the unlock signal, performs a logical product operation, and outputs an automatic valve open signal to the automatic valve control unit 27. The automatic valve control unit 27 closes the hard contact with the input of the automatic valve open signal, outputs the automatic valve open signal to the automatic valve, turns on the automatic valve, and discharges water. Next, when locked, the MPU 20 of the disaster prevention board 3
Alternatively, the case where the MPU 40 of the relay board 4 runs away for some reason and the open control command signal is constantly output to the AND circuit 45 will be described.

Even in such a state, the relay circuit 41 remains on unless the switch of the switch unit 21 of the disaster prevention panel 3 or the lock release switch provided on the central disaster prevention panel is pressed by the administrator.
The F signal is output to the automatic valve control unit 27, and the lock signal is output to the unlock determination circuit 43 of the unlock determination circuit 42. Therefore, the unlock determination circuit 43 determines that the switch unit 21 is not in the unlock mode, and does not output the unlock signal to the AND circuit 45. This AND circuit 45
The automatic valve control unit 27 outputs an automatic valve open signal to the automatic valve control unit 27 when an unlock control signal and an open control command signal from the MPU 40 are input. No open signal is output. Also, the relay circuit 41
Since the FF signal is output and the hard contact of the automatic valve control unit 27 is in an open state, even if noise is added to the output of the AND circuit 45 and the automatic valve open signal is output to the automatic valve control unit 27, Since the hard contacts do not close, no water is discharged.

FIG. 2 is a block diagram of the relay circuit 41 of the relay board 4. 61 is a locked and amplified signal or a locked and amplified signal, and a reproduced amplifier circuit for outputting the signal to the next relay panel 4;
62 is a monitoring circuit for monitoring the regenerative amplifier 61, 63 is connected in parallel with the regenerative amplifier 61, and when the regenerative amplifier 61 fails, outputs an input signal such as a lock signal to the next relay board as it is. Is a disconnection monitoring circuit for monitoring disconnection of the second transmission cable. The relay circuit 41 is configured by these circuits. next,
The operation of the relay circuit 41 will be described. Normally, the signal of the second transmission cable 52 is reproduced and amplified by the reproduction amplifier circuit 61 and output to the next relay panel 4. This is to prevent a signal such as a lock signal from attenuating because the distance between the relay boards is long, for example, 1000 m. Further, the reproduction amplifier circuit 61 is monitored by the monitoring circuit 62, and outputs a failure signal to the MPU 40 of the relay board 4 when the reproduction amplifier circuit 61 fails. Accordingly, the MPU 40 operates the bypass circuit 63 including, for example, a switching element such as a relay contact, and outputs the lock signal and the like to the succeeding relay board 4 without amplification. If the reproduction amplification circuit 61 of the succeeding relay board 4 is not out of order, the locked signal and the like are reproduced and amplified here, and return to a normal signal that is not attenuated. When such a failure of the reproduction amplifier circuit 61 is reproduced on two adjacent relay boards, the distance between the two relay boards 4 is long and the length of the second transmission cable 52 connecting them is long. Then, the lock signal and the like are attenuated and may not be transmitted to the relay board thereafter.

Therefore, in such a case, the MPU 40 of the relay board 4 which has received the failure signal of the reproduction amplifier circuit 61 sends the failure signal to the disaster prevention board 3. When a failure signal is received from the relay board 4 of this example, it is determined that an abnormal situation has occurred, and processing for the abnormal situation described later is performed. Further, the second transmission cable 52 constantly monitors the disconnection by the disconnection monitoring circuit 64, and when the disconnection is detected, the MPU 40 of the relay panel 4 sends a disconnection signal to the disaster prevention board 3 via the cable 51, for example. . Upon receiving the disconnection signal, the disaster prevention board 3 determines that an abnormal situation has occurred. If two regenerative amplifier circuits 61 break down consecutively or the second transmission cable 52 is disconnected, even if a lock release signal is transmitted by the disaster prevention board 3, the signal cannot be received. , The automatic valve opening signal cannot be output from the AND 45, and water may not be discharged in the event of a fire. Therefore, when an abnormal situation occurs, the disaster prevention panel 3 is connected to the relay panel 4 subsequent to the relay panel 4 which has continuously transmitted the failure signal and to the relay panel 4 which has transmitted the disconnection signal. , An invalid command signal for invalidating the signal of the second cable 52 is transmitted. The relay board 4 receiving this invalid command signal ignores the signal of the second transmission cable 52 and controls the automatic valve only with the signal from the first transmission cable 51.

That is, upon receiving the automatic valve control command signal from the disaster prevention board 3, the MPU 40 of the relay board 4 outputs an open control command and an unlock signal for closing the hard contact to the automatic valve control section. Release the automatic valve to release water. FIG. 3 is a schematic configuration diagram of an embodiment of the second system using the present invention. As shown in the figure, the disaster prevention board 3 is provided with a transmission circuit 35 for sending a lock signal or unlock signal to the relay board 4 via the cable 52. The relay board 4 has a relay circuit 41 and a lock release judgment. The circuit 42 is provided. Reference numeral 50 denotes an MPU provided in the relay board 4. The MPU 50 inputs an automatic valve control command signal, a lock release signal, a lock signal, and the like from the disaster prevention board 3 via the transmission cable 51. If the automatic valve control command signal is an open control command, the MPU 50 outputs the lock release signal. In accordance with the input, the opening control command is output to the AND circuit 45. The operation of the above disaster prevention system will be described below. In this case, when locked, the MPU 20 of the disaster prevention board 3 or the relay board 4
MPU 50 runs out of control for some reason and an open control command signal is always output to AND circuit 45.

Similarly, in this system, the relay circuit 41 automatically sends the OFF signal unless the switch of the switch unit 21 of the disaster prevention panel 3 or the lock release switch provided on the central disaster prevention panel is pressed by the administrator. The lock signal is output to the control unit 27 and the unlock signal is output to the unlock determination circuit 43.
Accordingly, the unlock determination circuit 43 determines that the unlock has not been performed, and does not output the unlock signal to the AND circuit 45. The AND circuit 45 outputs an automatic valve opening signal to the automatic valve control unit 27 when a lock release signal and an opening control command signal are input. No valve open signal is output. Further, since the OFF signal is output and the hard contact of the automatic valve control unit 27 is in an open state, noise is output on the output of the AND circuit 45 and the signal is output to the automatic valve control unit 27 as an automatic valve open signal. Even so, no water is discharged because the hard contacts do not close. In the above embodiments, the number of relay boards is one. However, even if a plurality of relay boards are provided with the same function, even if the MPU runs out of control, erroneous water discharge will not occur.

[0025]

As described above, according to the present invention, the first microcomputer of the disaster prevention board determines the water discharge section, and sends the automatic valve control command signal to the relay board via the first transmission cable. An open control command signal is output to the second microcomputer of the relay board. When a lock release signal for releasing the lock state of the automatic valve is input, the transmission circuit of the disaster prevention board sends the lock release signal to the relay board via the second transmission cable. Then, the open control command signal from the second microcomputer of the relay board and the unlock signal from the relay circuit and 2
By outputting an automatic valve opening signal to the automatic valve control unit when signals from the system are collected, the transmission circuit of the hardware-based disaster prevention board, the second transmission cable, and the relay circuit of the relay board are provided. If the unlock signal is not transmitted, the automatic valve opening signal is not output to the automatic valve control unit, so that even if the first microcomputer of the disaster prevention board or the second microcomputer of the relay board runs away, water is erroneously discharged. Never.

Further, the relay circuit of the relay board reproduces the unlock signal and amplifies and sends the signal to the next relay board, so that the effect that the tunnel can be lengthened can be obtained. . When the lock release signal is input from the disaster prevention board, the relay board determines whether the lock signal is sent from the disaster prevention board, and after confirming that there is no lock signal, opens the open control command signal and the relay circuit. Since the automatic valve opening signal is output when the unlock signal from the controller is obtained, the effect of further improving the accuracy for preventing erroneous water discharge is obtained.

[Brief description of the drawings]

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

FIG. 2 is a schematic configuration diagram of a relay circuit of the relay board according to the present invention.

FIG. 3 is a schematic configuration diagram of an embodiment of a second system using the present invention.

FIG. 4 is a schematic configuration diagram of a conventional distributed tunnel disaster prevention system.

FIG. 5 is a schematic configuration diagram showing a specific example of the conventional distributed type of the first method.

FIG. 6 is a schematic configuration diagram showing a specific example of the related art using the distributed type of the second system.

[Description of Signs] 1 Power supply equipment 2 Remote control device 3 Disaster prevention board 4 Relay board 20 MPU 35 Transmission circuit 40 MPU 41 Relay circuit 42 Lock release determination circuit 43 Unlocking determination circuit 45 AND circuit

Continuation of the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) A62C 3/00 A62C 27/00-39/00

Claims (4)

(57) [Claims] 1. A fire-extinguishing water discharge head is connected,
An automatic valve whose closed state is locked by a lock signal;
By outputting an automatic valve open signal to the automatic valve,
Relay panel for opening valve and disaster prevention connected to the relay panel
In a fire extinguishing system including a control panel, two signals of a lock release signal and an automatic valve control command signal are transmitted to the relay panel.
Signal is input, the automatic valve outputs the automatic valve open signal.
A lock release determination circuit, and the disaster prevention board includes a lock release signal and an automatic valve control command signal.
And output separately to the relay board.
Fire system. 2. At least every predetermined section
Detectors provided in each section within the predetermined section and the
Controls the automatic valve that supplies water from the pump to the water discharge head
The relay panel to be monitored and the fire signal from the relay panel
Therefore, the emergency valve that releases the locked state of the automatic valve
A fire suppression system, wherein the disaster prevention board receives an input of a fire occurrence signal from the relay board.
Along with notifying that a fire has occurred,
The automatic valve control command signal for discharging water to the raw predetermined section is transmitted to the first
A first microphone to be transmitted to the relay board via a transmission cable
A microcomputer and a lock release signal for releasing the locked state of the automatic valve.
Is input, the unlock signal is transmitted to the second transmission cable.
A transmission circuit for sending the signal to the relay panel via the relay panel, wherein the relay panel transmits a fire occurrence signal of a detector in a monitoring section to the relay panel.
Sending to the disaster prevention board via a first transmission cable,
When an automatic valve control command signal is received from the disaster prevention panel,
Second microcomputer for outputting control command signal
And the unlock signal from the disaster prevention board to the second transmission cable.
And a relay circuit for receiving and reproducing via an opening control command signal from the second microcomputer
And the unlock signal from the relay circuit are complete,
A lock release determination circuit that outputs a valve opening signal , and locks the automatic valve in response to the input of the automatic valve opening signal.
An automatic valve control circuit for releasing the state is provided.
A fire extinguishing system. 3. The relay circuit reproduces an unlock signal.
And amplify it and send it to the next relay board.
The fire extinguishing system according to claim 1. 4. The lock release judging circuit according to claim 1, further comprising a lock release signal.
Lock signal to lock the automatic valve when
Judge whether the signal is sent from the disaster prevention board,
If there is no lock signal, the open control command signal and the relay circuit
The automatic valve open signal when the unlock signal from the
3. The fire extinguishing system according to claim 2, wherein the output is obtained.
M