JP7005194B2 - Tunnel disaster prevention system - Google Patents

Description

The present invention relates to a tunnel disaster prevention system in which a terminal device such as a fire detector installed in a tunnel is connected to a disaster prevention receiving panel to monitor an abnormality in the tunnel.

Conventionally, emergency facilities have been installed in tunnels such as motorways to protect people and vehicles from fire accidents that occur in the tunnels.

Such emergency facilities are equipped with a fire detector, a manual notification device, an emergency telephone for fire monitoring and notification, a fire hydrant device for extinguishing a fire and preventing the spread of fire, and a tunnel frame. In order to protect from fire, water spray equipment that sprinkles fire extinguishing water from the water spray head is installed, and by installing a disaster prevention receiver that monitors and controls the terminal equipment of these emergency facilities, a tunnel disaster prevention system is constructed. There is.

The tunnel disaster prevention system consisting of a disaster prevention receiver and terminal equipment is roughly divided into an R-type transmission system and a P-type direct transmission system. The R-type transmission method connects a terminal device such as a fire detector whose address is set to a transmission line, and enables individual management in which detection and control are performed for each terminal device by transmission control. In the P-type direct delivery method, a plurality of terminal devices belonging to the same section are connected to a signal line drawn out in a predetermined section unit according to the type of the terminal device, and detection and control are performed in the signal line unit.

FIG. 7 is an explanatory diagram showing the line connection of the terminal device to the disaster prevention receiver board by the conventional P-type direct delivery method. As shown in FIG. 7, in the tunnel 201, fire detectors 16 are installed along the longitudinal direction of the tunnel at the boundary of a monitoring area divided into, for example, 25 m intervals or 50 m intervals, and the fire detectors 16 are installed in both left and right directions. It has a detection area in the same area, and fires in the same monitoring area are monitored in duplicate by fire detectors 16 arranged adjacent to each other.

Further, in the tunnel 201 , fire hydrant devices are installed along the longitudinal direction of the tunnel, for example, at intervals of 50 m, and the fire hydrant device is provided with a manual notification device 20 known as a transmitter, and a fire hydrant by a fire hydrant valve open / close lever. A fire hydrant switch 22 is provided in which a fire hydrant valve open / close switch that is turned on by opening the valve and a pump start switch operated by the fire brigade are connected in parallel.

Further, in the tunnel 201, automatic valve devices for water spraying equipment that spray water in the form of mist from the water spray head to protect the tunnel frame from heat caused by a fire are installed along the longitudinal direction of the tunnel, for example, at intervals of 50 m. The automatic valve device is provided with a water spray switch 24 for detecting the start of water spray by the remote operation of the automatic valve.

The disaster prevention receiving board 200 is provided with partition boards 202-1 and 202-2 having a predetermined length in the tunnel, for example, 800 meters as one section. The fire detector 16, the manual notification device 20, the fire hydrant switch 22, and the water spray switch 24 installed in the section from 0 to 800 meters from the tunnel entrance are signal lines drawn from the partition board 202-1 in a bundled manner. It is connected to each signal line of the group 204-1, 206-1, 208-1, 100-1 on a device-by-device basis.

Further, the fire detector 16, the manual notification device 20, the fire hydrant switch 22, and the water spray switch 24 installed in the section of 800 to 1600 meters from the tunnel entrance were pulled out from the partition board 202-2 in a bundled manner. It is connected to each signal line of the signal line group 204-2, 206-2, 208-2, 210-2 for each device.

Japanese Unexamined Patent Publication No. 2002-246962 Japanese Unexamined Patent Publication No. 11-128381

However, in such a conventional tunnel disaster prevention system in which a plurality of partition boards are provided with a predetermined length as one section, the partition boards fail due to deterioration or the like during long-term operation. If this is the case, there is a problem that it becomes impossible to monitor all the terminal devices installed in the section in the tunnel corresponding to the failed partition board.

In addition, in case of a failure of the partition board, it is necessary to replace the failed partition board with a spare partition board, but the spare partition board prepared for the failure response does not operate normally due to aging or the like. In some cases, it takes time and effort to replace the failed partition board, and during that time, there is a problem that all terminal devices installed in the section in the tunnel corresponding to the failed partition board cannot be monitored.

In order to solve such a problem, the partition boards may be duplicated and switched to a spare partition board if the partition board fails during operation. However, as the tunnel becomes longer, the number of partition boards increases. However, if the partition board is duplicated, the installation space and cost will increase significantly, which is not a realistic solution.

The present invention provides a tunnel disaster prevention system capable of maintaining the minimum necessary monitoring function by a terminal device connected to a line from a normal partition board even if any of the plurality of partition boards fails. With the goal.

(Odd and even grouping of terminal devices and line connection)
The present invention is a tunnel disaster prevention system in which a plurality of types of terminal devices are connected to a disaster prevention receiver via a line.
A plurality of terminal devices are arranged in a row for each type and are given consecutive numerical numbers in the order of arrangement, forming an odd group in which the numerical numbers are odd and an even group in which the numerical numbers are even. It is connected to the line of the above group in units of
The disaster prevention receiver is characterized by having two partition boards connected to each of an odd-numbered group line and an even-numbered group line.

(Grouping and line connection by the remainder of dividing the terminal number by the number of compartment boards)
The present invention is a tunnel disaster prevention system in which a plurality of types of terminal devices are connected to a disaster prevention receiver via a line.
The disaster prevention receiver board is equipped with multiple partition boards corresponding to each of the multiple lines to be connected.
A plurality of terminal devices are arranged in a row and are given consecutive numerical numbers in the order of arrangement, and a plurality of groups are formed for each terminal device having the same remainder obtained by dividing the numerical numbers by the number of partition boards. Each line is connected in group units.

(Type of terminal device)
The terminal device is at least one of a fire detector, a manual notification device, a fire hydrant switch, or a water spray switch installed at predetermined intervals in the longitudinal direction of the tunnel.

(Fire hydrant switch)
The fire hydrant switch is connected in parallel with a fire hydrant valve open / close switch that detects the opening operation of the fire hydrant valve and outputs a pump start signal, and a pump start switch that detects a push button operation and outputs a pump start signal.

(Basic effect)
The present invention is a disaster prevention receiving board in a tunnel disaster prevention system in which a terminal device installed in a tunnel is connected to a line drawn from a disaster prevention receiving board and a signal from the terminal device is received and controlled for each line. Is provided with a plurality of partition boards that receive signals from terminal devices and instruct predetermined control, and when any of the plurality of partition boards fails, the circuit is connected to a line drawn from the failed partition board. Because multiple terminal devices are connected to the line drawn from each of the multiple partition boards so that the terminal device connected to the line drawn from the normal partition board is located adjacent to the terminal device. If any of the multiple partition boards provided on the disaster prevention receiver fails, the monitoring function by the terminal equipment connected to the line from the failed partition board will be lost, but from the remaining normal partition boards. The terminal device connected to the line is monitoring adjacent to the terminal device whose monitoring function has been lost due to a failure, and it becomes impossible to monitor all the fixed sections in the tunnel monitored by multiple terminal devices. It is possible to prevent this.

Further, when the terminal device has a monitoring area overlapping with other adjacent terminal devices, monitoring of all sections can be continued even if any of the plurality of partition boards fails.

(Effects of odd and even grouping of terminal devices and line connection)
Further, when the number of partition boards is two, a plurality of terminal devices are divided into an odd group in which consecutive numerical numbers are odd and an even group in which the numerical numbers are even, which are assigned in the order of arrangement in the longitudinal direction of the tunnel. Since multiple terminal devices belonging to the odd-numbered group are connected to the line drawn from one, and multiple terminal devices belonging to the even-numbered group are connected to the line drawn from the other of the partition boards, one of the partitions is used. If the board fails, the arrangement of normal terminal devices and terminal devices that have lost the monitoring function due to the failure will be repeated alternately in the longitudinal direction of the tunnel, and all monitoring of a certain section monitored by multiple terminal devices will be performed. It is possible to prevent it from disappearing, maintain the minimum necessary monitoring function, and allow time for repair and replacement of the failed partition board.

(Effects of grouping and line connection by the remainder of dividing the terminal number by the number of compartment boards)
In addition, when multiple terminal devices are assigned consecutive numerical numbers in the order of arrangement in the longitudinal direction of the tunnel, the remainder when the numerical numbers of the terminal devices are divided by the number of partition boards is the same. Since multiple terminal devices belonging to each group are connected to the line drawn from each of the plurality of partition boards in a group unit, when any of the plurality of partition boards fails, the failed partition board is used. To connect to the lines pulled out from multiple compartment boards so that the terminal equipment connected to the line pulled out from the normal partition board is located adjacent to the terminal equipment connected to the pulled out line. It is possible to easily group a plurality of terminal devices.

(Effects depending on the type of terminal device)
Further, the terminal device is at least one of a fire detector, a manual notification device, a fire hydrant switch or a water spray switch installed at predetermined intervals in the longitudinal direction of the tunnel, and the fire detector is another fire detection adjacent to both sides. A detection area that overlaps with the device is set, and the fire detector has a detection area that overlaps with other fire detectors adjacent to both sides, so even if any of the multiple compartment boards fails, it will be monitored. There is no detection area where you cannot do it.

In addition, the manual notification device is installed in the fire hydrant device installed at predetermined intervals in the longitudinal direction of the tunnel and outputs a fire notification signal. However, even if any of the plurality of partition boards fails, the function is lost due to the failure. Other manual notification devices adjacent to the manual notification device functioned normally, and the installation interval of the fire hydrant device equipped with the manual notification device was 50 meters, and the function of the manual notification device was lost due to the failure of the partition board. Although the installation interval is expanded to 100 meters in some parts, all the functions of a certain section such as 800 meters are not lost as in the past, and the minimum necessary monitoring function can be maintained.

This point is the same for the fire hydrant switch in which the fire hydrant valve open / close switch and the pump start switch provided in the fire hydrant device are connected in parallel.

Further, in the case of the water spray switch provided in the automatic valve device of the water spray facility, since the water spray is performed by the open control of the automatic valve device in a plurality of sections including the place where the fire occurs, any one of the plurality of compartment boards. Even if the water spray switch fails, the other water spray switches adjacent to the water spray switch whose function has been lost due to the failure will function normally, so that the monitoring function of the water spray start by the water spray equipment will not be lost.

Explanatory diagram showing the outline of the tunnel disaster prevention system Block diagram showing the board configuration of the disaster prevention receiver along with the terminal line connection Block diagram showing the outline of the functional configuration of the tunnel disaster prevention system A block diagram showing an embodiment of line connection of a terminal device when two partition boards are used. Taking the line connection of the fire detector in Fig. 4 as an example, a block diagram showing the monitoring function when the partition board is normal and when it fails. A block diagram showing an embodiment of line connection of a terminal device when three partition boards are used. Explanatory diagram showing the line connection of the terminal device to the disaster prevention receiver by the conventional P-type direct delivery method.

[Overview of tunnel disaster prevention system]
FIG. 1 is an explanatory diagram showing an outline of a tunnel disaster prevention system. As shown in FIG. 1, an up line tunnel 1a and a down line tunnel 1b are constructed as tunnels for a motorway, and the up line tunnel 1a and the down line tunnel 1b are connected by an evacuation connecting pit 2.

Inside the up line tunnel 1a and the down line tunnel 1b, fire detectors 16 that function as terminal equipment are installed along the wall surface in the longitudinal direction of the tunnel, for example, at intervals of 50 meters. The fire detector 16 sets monitoring areas on both sides, which are 50 meters to the left and right, and detects a flame caused by a fire and issues a fire.

Further, inside the up line tunnel 1a and the down line tunnel 1b, a fire hydrant device 18 and an automatic valve device 23 are installed along the wall surface of the observer passage in the longitudinal direction of the tunnel, for example, at intervals of 50 meters. The fire hydrant device 18 is provided with a manual notification device 20 and a fire hydrant switch 22 that function as terminal devices.

The fire hydrant device 18 has a hose with a nozzle housed in the fire hydrant door. In the event of a fire, the fire hydrant door is opened to pull out the hose with a nozzle, and when the fire hydrant valve open / close lever is opened, fire hydrant water is discharged and the fire hydrant valve open / close switch. Turns on and outputs a pump start signal to start the fire extinguishing pump. Further, the fire hydrant device 18 is provided with a fire extinguisher door, and the fire extinguisher is housed in the fire extinguisher door.

Further, the fire hydrant device 18 is provided with a water tap used by the fire brigade, and is provided with a pump start switch that outputs a pump start signal when operated by a fire brigade member. The fire hydrant valve open / close switch and the pump start switch are connected in parallel, and this functions as the illustrated fire hydrant switch 22.

Further, the fire hydrant device 18 is provided with a notification device door, and the notification device door is provided with a manual notification device 20 functioning as a transmitter. When the manual notification device 20 is operated, a fire notification signal is output to the disaster prevention receiving panel 10, and the response lamp is turned on by the response signal from the disaster prevention receiving panel 10.

Further, inside the up line tunnel 1a and the down line tunnel 1b, an automatic valve device 23 of a water spray facility is installed along the wall surface of the observer passage in the longitudinal direction of the tunnel, for example, at intervals of 50 meters. 23 opens and drives the main valve by remote opening control of the electric valve for operation, and discharges fire extinguishing water from a plurality of water spray heads installed in the longitudinal direction at the upper part of the tunnel wall surface to protect the tunnel frame from fire. The automatic valve device 23 of the water spraying equipment is provided with a water spray switch 24 as a terminal device for detecting the start of water spraying from the water spray head. As the water spray switch 24, a pressure switch that detects and turns on the water discharge pressure due to the opening operation of the automatic valve is used.

A disaster prevention receiver 10 is installed in a monitoring center or the like in order to connect terminal devices such as a fire detector 16, a manual notification device 20, a fire hydrant switch 22, and a water spray switch 24 installed in the tunnel to monitor abnormalities in the tunnel. Is installed.

P-type signal line groups 11 and 12 are pulled out from the disaster prevention receiver 10 into the up line tunnel 1a and the down line tunnel 1b, and the fire detector 16, the manual notification device 20, and the fire hydrant switch installed in the tunnel. 22 and the water spray switch 24 are connected. Details of the line connection to the fire detector 16, the manual notification device 20, the fire hydrant switch 22, and the water spray switch 24 in the present embodiment will be clarified later.

Here, the P-type signal line is composed of a signal line and a common line, and the fire detector 16, the manual notification device 20, the fire extinguishing plug switch 22, and the water spray switch 24 pass a line current based on their respective operations. A fire detection signal, a fire notification signal, a pump start signal, and a water spray start signal are sent to the disaster prevention receiver 10.

In addition to this, the emergency facilities of the tunnel include fire extinguishing pump equipment 25, ventilation equipment 28, alarm display board equipment 30, radio rebroadcasting equipment 32, TV monitoring equipment 34 and lighting equipment 36, IG slave station equipment 38, and the like. Except for the point that the IG slave station equipment 38 is connected by a data transmission line, the other equipment is individually connected to the disaster prevention receiving panel 10 by the signal line group 14.

Here, the IG slave station equipment 38 is a communication equipment that connects the disaster prevention receiving panel 10 and the remote management equipment 42 via the network 40. The ventilation equipment 28 is equipment that gives energy to the air in the tunnel by the high blowing wind speed operated by the jet fan installed on the ceiling side in the tunnel to generate a ventilation flow in the longitudinal direction of the tunnel.

Further, the alarm display board equipment 30 is a facility for notifying the user in the tunnel of the occurrence of a fire in the tunnel, the start of water spraying, etc. by displaying it on the lightning display board. The radio rebroadcasting facility 32 is a facility for allowing a driver or the like to receive information from a road administrator in a tunnel. The TV monitoring equipment 34 is a facility for confirming the scale and position of a fire, operating a water spraying facility, and grasping the situation in a tunnel when evacuation guidance is performed. The lighting equipment 36 is equipment that drives and manages the lighting equipment in the tunnel.

[Board configuration of disaster prevention receiver]
FIG. 2 is a block diagram showing the board configuration of the disaster prevention receiver board together with the terminal line connection. As shown in FIG. 2, the disaster prevention receiving board 10 is provided with a control rack 46 and a compartment rack 52. The control rack 46 is provided with a control CPU board 48 and a control CPU spare board 50, and the boards are duplicated.

The partition rack 52 is provided with a partition CPU board 54 and a partition CPU spare board 56, and the boards are duplicated. Further, the partition rack 52 is provided with two partition boards 60-1 and 60-2 corresponding to the terminal equipment of the up line tunnel 1a, and two pieces corresponding to the terminal equipment of the down line tunnel 1b. The partition boards 60-3 and 60-4 of the above are provided. Further, the partition rack 52 is provided with a P-type output board 62.

The duplicated partition CPU board 54 and the partitioned CPU spare board 56 are connected to the duplicated control CPU board 48 and the control CPU spare board 50 via serial transmission lines 76 and 78 such as the duplicated RS-485. .. Further, the duplicated partition CPU board 54 and the partition CPU spare board 56 are connected to the partition boards 60-1 to 60-4 and the P-type output board 62 via a signal line. The P-type output board 62 is connected to the external fire extinguishing pump equipment 25, ventilation equipment 28, alarm display board equipment 30, radio rebroadcasting equipment 32, TV monitoring equipment 34, and lighting equipment 36 shown in FIG.

From the partition board 60-1, P-type signal line groups 80-1, 82-1, 84-1, 86-1 (128 lines in total) are drawn out from the partition board 60-1 in units of 16 lines for the upstream tunnel 1a. , The fire detector 16, the manual notification device 20, the fire hydrant switch 22, and the water spray switch 24 are connected in line units.

Here, 32 fire detectors 16 are installed at intervals of 50 meters in the tunnel section of 1600 meters, and the signal line groups 80-1 and 80-2 are 16 lines each, and the signal line groups 80-1 and 80-1 are installed. Fire detectors 16 are alternately connected to each of the 80-2 signal lines. The same applies to the connection of the manual notification device 20, the fire hydrant switch 22, and the water spray switch 24 by the signal line groups 82-1, 84-1, and 86-1.

Regarding the manual notification device 20, the fire hydrant switch 22, and the water spray switch 24, the tunnel section is divided into a block section of, for example, 200 meters, and for example, four terminal devices included in one block are connected to the same signal line to block. Although monitoring may be performed in units, the following description takes as an example the case where a signal line is connected to each terminal device and monitoring is performed in units of terminal devices.

From the partition board 60-2, P-type signal line groups 80-2, 82-2, 84-2, 86-2 (total of 128 lines), which are grouped by 16 lines for the upstream tunnel 1a, are drawn out. , The remaining fire detector 16, the manual notification device 20, the fire hydrant switch 22, and the water spray switch 24 are connected in line units.

From the partition board 60-3, P-type signal line groups 80-3, 82-3, 84-3, 86-3 (total of 128 lines), which are grouped by 16 lines for the downlink tunnel 1b, are drawn out. , The fire detector 16, the manual alarm device 20, the fire hydrant switch 22, and the water spray switch 24 are connected in line units.

From the partition board 60-4, P-type signal lines 80-4, 82-4, 84-4, 86-4 (128 lines in total), which are grouped in units of 16 lines, are drawn out from the downlink tunnel 1b. The remaining fire detector 16, manual notification device 20, fire hydrant switch 22, and water spray switch 24 are connected in line units.

The partition rack 52 is provided with a detector test board that sends a test signal to the fire detector 16 by a test signal line that is a crossover wiring, but the illustration is omitted.

Further, the disaster prevention receiving board 10 is provided with an operation display CPU board 64, to which an operation unit 66 having a touch panel and various operation switches and an acoustic unit 68 having a speaker are connected, and via the display control board 70. A display unit 72 equipped with a liquid crystal display and various indicator lights is connected. Further, the disaster prevention receiving board 10 is provided with a serial CPU board 74, and the IG slave station equipment 38 shown in FIG. 1 is connected to the serial CPU board 74.

[Functional configuration of disaster prevention receiver]
FIG. 3 is a block diagram showing an outline of the functional configuration of the tunnel disaster prevention system. As shown in FIG. 3, the disaster prevention receiving panel 10 is provided with a main control unit 90, and the main control unit 90 is a function realized by executing a program, for example, and the hardware is the control CPU board 48 of FIG. A computer circuit or the like equipped with a provided CPU, memory, various input / output ports, etc. is used.

When the main control unit 90 receives a fire detection signal from the fire detector 16 or a fire notification signal from the manual notification device 20, the main control unit 90 performs predetermined fire alarm control and receives a pump start signal from the fire hydrant switch 22. Controls the start of the fire extinguishing pump equipment 25, and further controls the alarm display board equipment 30 to display a warning indicating that tunnel intrusion is prohibited when the water spray starts when the water spray start signal from the water spray switch 24 is received. Let me.

A partition control unit 96 is provided for the main control unit 90, and the partition control unit 96 is a function realized by, for example, executing a program. As hardware, the CPU provided on the partition CPU board 54 in FIG. 2 Computer circuits equipped with memory, various input / output ports, etc. are used.

When the partition control unit 96 receives a line signal from a terminal device installed in a tunnel, the partition control unit 96 sends a line number specifying the type of the line signal and the received signal line to the main control unit 90 to perform predetermined control. ..

For the section control unit 96, two sets of P-type receivers 98-1, 98-corresponding to each of the fire detector 16 of the upstream tunnel 1a, the manual notification device 20, the fire hydrant switch 22 and the water spray switch 24. 2,100-1,100-2,102-1,102-2,104-1,104-2 are provided. Here, the partition board 60-1 of FIG. 2 is used for the P-type receiving units 98-1, 100-1, 102-1, and 104-1, and the P-type receiving units 98-2, 100-2, 102-2 are used. , 104-2 uses the partition board 60-2 of FIG.

Further, for the section control unit 96, two sets of P-type receivers 98-3, corresponding to each of the fire detector 16 of the down line tunnel 1b, the manual notification device 20, the fire hydrant switch 22 and the water spray switch 24, 98-4, 100-3, 100-4, 102-3, 102-4, 104-3, 104-4 are provided. Here, the partition board 60-3 of FIG. 2 is used for the P-type receivers 98-3, 100-3, 102-3, 104-3, and the P-type receivers 98-4, 100-4, 102-4. , 104-4 uses the partition board 60-4 of FIG.

The P-type receivers 98-1 to 104-4 receive and receive signals output from the fire detector 16, the manual notification device 20, the fire hydrant switch 22, and the water spray switch 24 provided as terminal equipment in line units. A signal is output to the compartment control unit 96, and this received signal is sent from the compartment control unit 96 to the main control unit 90 to perform fire alarm control, pump start control, water spray alarm display control, and the like.

The main control unit 90 is provided with an acoustic unit 68, an operation unit 66, a display unit 72, a serial transmission unit 92, and a P-type output unit 94. Of these, the serial CPU board 74 of FIG. 2 is used for the serial transmission unit 92, and the P-type output board 62 of FIG. 2 is used for the P-type output unit 94. A parallel CPU board may be provided instead of the serial CPU board 74, and the serial transmission unit 92 in FIG. 3 may be used as the parallel transmission unit correspondingly.

[Countermeasures against partition board failures]
FIG. 4 is a block diagram showing an embodiment of line connection of terminal equipment when two partition boards are used. Note that FIG. 4 shows the terminal equipment on the up line tunnel 1a side, and the down line tunnel 1b side is not shown.

In the tunnel disaster prevention system of the present embodiment, as shown in FIG. 4, the fire detector 16 will be described as an example as a terminal device. The disaster prevention receiving panel 10 receives a signal from the fire detector 16 and controls the fire. A plurality of partition boards 60-1 and 60-2 are provided, and if any of the partition boards 60-1 or 60-2 fails, for example, if the partition board 60-2 fails, the failed partition board Fire detection connected to the signal line group 80-1 drawn from the normal partition board 60-1 adjacent to the fire detector 16 connected to the signal line group 80-2 drawn from 60-2. A plurality of fire detectors 16 are connected to the signal line groups 80-1 and 80-2 drawn from each of the plurality of partition boards 60-1 and 60-2 so that the vessel 16 is located.

In this embodiment, the case where the tunnel length is 1600 meters is taken as an example. Since the fire detectors 16 are installed at intervals of 50 meters, 32 units are installed at 1600 meters, and the fire detectors are correspondingly installed. Numbers 1 to 32 are shown as terminal arrangement numbers (numerical numbers) A indicating the arrangement order of 16 tunnels in the longitudinal direction.

(Line connection by grouping odd and even numbers of terminal devices)
As shown in FIG. 4, when the disaster prevention receiver 10 is provided with two partition boards 60-1 and 60-2, the continuous terminal arrangements of the 32 fire detectors 16 are given in the order of arrangement in the longitudinal direction of the tunnel. An odd number group in which the number A is an even number (A = 1,3,5, ..., 29, 31) and an even number in the terminal arrangement number A (A = 2,4,6, ..., 30, 32). 16 fire detectors 16 belonging to the odd-numbered group are connected to each signal line of the signal line group 80-1 drawn from the partition board 60-1 and pulled out from the partition board 60-2. The remaining 16 fire detectors 16 belonging to the even-numbered group are connected to each signal line of the signal line group 80-2.

In order to clarify this relationship, the partition board 60-2 and the fire detector 16 connected to the partition board 60-2 are shown by hatching.

FIG. 5 is a block diagram showing a monitoring function at the time of normal operation and failure of the partition board by taking the line connection of the fire detector of FIG. 4 as an example, FIG. 5 (A) shows the normal time, and FIG. 5 (B) shows. Indicates the time of failure.

When the partition boards 60-1 and 60-2 shown in FIG. 5A are normal, the plurality of fire detectors 16 arranged in the longitudinal direction of the tunnel are signal lines to the partition boards 60-1 and 60-2. They are connected alternately by groups 80-1 and 80-2.

Here, as shown in FIG. 5B, for example, when the partition board 60-2 fails, hatching is added to FIG. 5A connected by the signal line group 80-2. The monitoring function by the fire detector 16 is lost, and the state in which this function is lost is represented by a dotted line in FIG. 5 (B).

Even if the monitoring function of the fire detector 16 whose terminal arrangement number A is an even number is lost due to the failure of the partition board 60-2, the normal partition board is adjacent to the fire detector 16 whose function is lost. A fire detector 16 having an odd number of terminal arrangement numbers A connected to 60-1 and operating normally is located, and as shown in the conventional example of FIG. 7, a plurality of fires are caused by a failure of one of the compartment boards. It is possible to prevent a situation in which the detector 16 cannot monitor the entire 800-meter section.

Further, the fire detector 16 has a detection area of 50 meters in both the left and right directions when installed at intervals of 50 meters, and normally, the adjacent fire detectors 16 duplicately monitor the same detection area. .. Therefore, even if the monitoring function of the fire detector 16 is lost every other time due to the failure of the partition board 60-2, the overlap monitoring with the adjacent fire detector 16 connected to the normal partition board 60-1 is monitored. However, the independent monitoring function is maintained, and even if the partition board 60-2 fails, the fire monitoring function in the tunnel is not lost, and the failed partition board 60-2 is maintained while maintaining the monitoring function. You can take time to repair and replace. In this respect, even if the partition board 60-1 fails, the fire monitoring function in the tunnel is not lost as well.

The connection of the signal line group divided into the odd-numbered group and the even-numbered group of the fire detector 16 to the two compartmentalized boards 60-1 and 60-2 is the manual notification device 20 and the fire hydrant switch 22 shown in FIG. The same applies to the water spray switch 24.

In this case, the manual notification device 20 is provided in the fire hydrant device 18 installed at 50 meters in the longitudinal direction of the tunnel and outputs a fire notification signal, but one of the partition boards 60-1 and 60-2 fails. However, the other manual notification device 20 adjacent to the manual notification device 20 whose function was lost due to a failure functions normally, and the installation interval of the fire hydrant device 18 provided with the manual notification device 20 is 50 meters, and the partition board. The installation interval is expanded to 100 meters at the part of the manual notification device 20 where the function of either 60-1 or 60-2 is lost due to a failure, but the function of a fixed section such as 800 meters as in the conventional example of FIG. Is not lost, and the minimum required monitoring function can be maintained. This point is the same for the fire hydrant switch 22.

Further, when the water spray start signal by the water spray switch 24 is received by the disaster prevention receiving panel 10, an alarm display such as prohibition of tunnel entry due to the start of water spray is displayed on the alarm display board equipment 30 shown in FIG. Since the operation of the water spray equipment operates the automatic valve device 23 in a plurality of compartments centering on the place where the fire occurs, one of the compartment boards 60-1 and 60-2 fails and the water spray switch 24 is placed every other. Even if the function is lost, the monitoring by the adjacent water spray switch 24 is effectively performed, so that all the functions of the water spray switch 24 in a certain section such as 800 meters are lost as in the conventional example of FIG. No, the minimum required monitoring function can be maintained.

[Grouping and line connection by remainder after dividing the terminal number by the number of compartment boards]
(General system with the number of partition boards as N)
According to this embodiment, the grouping for providing a plurality of partition boards on the disaster prevention receiving board 10 and connecting the terminal devices by the signal line group can be generalized as follows.

Now, as shown in FIG. 4, when a plurality of terminal devices are given continuous terminal arrangement numbers A in the order of arrangement in the longitudinal direction of the tunnel, the terminal arrangement number A of the terminal equipment is divided by the number of partition boards N. It suffices to divide into groups for each terminal device having the same remainder C, and to connect a plurality of terminal devices belonging to each group to a signal line drawn from each of the plurality of partition boards in a group unit.

Here, assuming that the terminal arrangement number of the terminal device is A, the number of partition boards is N, and the group number of the terminal device is G.
G = (A) mod (N) (Equation 1)
The group number G is obtained by. The right side of this (Equation 1) shows the remainder calculation which means the calculation of the remainder obtained by dividing the terminal arrangement number A by the number N of the partition boards.

For example, in the case of the fire detector 16 in FIG. 4, since A = 1, 2, 3, ... 31, 32, N = 2, the group number G = 1, 0, 1, from (Equation 1). ..... It becomes 1,0, and it is divided into the first group of G = 1 and the second group of G = 0, and the fire detector 16 of the first group of G = 1 is a signal line group from the partition board 60-1. It is connected to the signal line unit of 80-1, and the fire detector 16 of the second group of G = 0 is connected to the signal line unit of the signal line 80-2 from the partition board 60-2.

Here, the first group of G = 1 corresponds to the above-mentioned odd-numbered group, the second group of G = 0 corresponds to the above-mentioned even-numbered group, and the terminal devices of the odd-numbered group and the even-numbered group from the terminal arrangement number A. The result is the same as when connecting to the signal line separately.

(Grouping and line connection when 3 compartment boards are used)
In the connection of the signal line based on the grouping of the terminal devices according to the above-mentioned (Equation 1), when the number N of the partition boards is N = 3 or more, the connection of the signal line by the grouping can be easily determined. ..

FIG. 6 is a block diagram showing an embodiment of line connection of terminal equipment when three partition boards are used.

As shown in FIG. 6, in the present embodiment, the disaster prevention receiving board 10 is provided with three partition boards 60-1, 60-2, 60-3. In this case, since the number N of the partition boards is N = 3, for example, regarding the terminal arrangement numbers A = 1, 2, 3, 4, 5, 6, ..., 30, 31, 32 of the fire detector 16. , When the group number G is obtained from the above (Equation 1),
G = 1,2,0,1,2,0, ..., 1,2,0
Is obtained, and it is divided into a first group with G = 1, a second group with G = 2, and a third group with G = 0.

Therefore, 11 terminal devices belonging to the first group of G = 1 are connected to the signal line unit of the signal line group 80-1 extracted from the partition board 60-1, and the signal extracted from the partition board 60-2 is connected. Eleven fire detectors 16 belonging to the second group of G = 2 are connected to the signal line unit of the line group 80-2, and the signal line unit of the signal line group 80-3 drawn from the partition board 60-3 is used. Ten fire detectors 16 belonging to the third group of G = 0 are connected.

This point also applies to the manual notification device 20, the fire hydrant switch 22, and the water spray switch 24.

Also in this case, if any of the partition boards 60-1 to 60-3 fails, the arrangement of two normal terminal devices and one terminal device that has lost the monitoring function due to the failure repeats in the longitudinal direction of the tunnel. Therefore, by locating a normal terminal device adjacent to a terminal device that has lost its function due to a failure, it is possible to prevent all monitoring of a certain section monitored by multiple terminal devices from being performed. It is possible to maintain the minimum necessary monitoring function, and it is possible to take time to repair and replace the failed partition board. If necessary, the number N of the partition boards may be N = 4 or more.

[Modified example of the present invention]
(Terminal device)
In the above embodiment, a fire detector, a manual notification device, a fire hydrant switch, and a water spray switch are taken as examples of terminal devices connected to the partition board by a signal line, but the present invention is not limited to this, and is related to a fire. It can also be applied when the operation of an appropriate terminal device to be operated, for example, an emergency telephone notification operation, a fire extinguisher removal, etc., is connected to the partition board as a terminal device.

(Transmission between CPUs)
In the above embodiment, the control CPU board, the control CPU spare board, the partition CPU board, and the partition CPU spare board are connected by a serial transmission line, but the present invention is not limited to this, and the control CPU board is connected by a parallel transmission line. Is also good.

(others)
In addition, the present invention includes appropriate modifications that do not impair its purpose and advantages, and is not further limited by the numerical values shown in the above embodiments.

1a: Up line tunnel 1b: Down line tunnel 10: Disaster prevention receivers 11, 12, 14: Signal line group 16: Fire detector 18: Fire extinguisher device 20: Manual notification device 22: Fire extinguishing plug switch 23: Automatic valve device 24: Water Spray switch 25: Fire extinguishing pump equipment 28: Ventilation equipment 30: Alarm display board equipment 32: Radio rebroadcasting equipment 34: TV monitoring equipment 36: Lighting equipment 38: IG slave station equipment 40: Network 42: Remote management equipment 46: Control rack 48: Control CPU board 50: Control CPU spare board 52: Section rack 54: Section CPU board 56: Section CPU spare board 60-1 to 60-4: Section board 62: P-type output board 64: Operation display CPU board 66: Operation unit 68: Acoustic unit 70: Display control board 72: Display unit 74: Serial CPU board 76, 78: Serial transmission lines 80-1 to 86-4: Signal line group 90: Main control unit 92: Serial transmission unit 94: P-type output unit 96: Partition control unit 98-1 to 104-4: P-type receiver unit

Claims (4)

It is a tunnel disaster prevention system in which multiple terminal devices of multiple types are connected to the disaster prevention receiver via a line .
The plurality of terminal devices are arranged in a row for each type and are given consecutive numerical numbers in the order of arrangement, forming an odd group in which the numerical numbers are odd and an even group in which the numerical numbers are even. It is connected to multiple lines in units of the above groups.
The disaster prevention receiving board is a tunnel disaster prevention system including two partition boards connected to each of the odd-numbered group lines and the even-numbered group lines.
It is a tunnel disaster prevention system in which multiple terminal devices are connected to the disaster prevention receiver via a line .
The disaster prevention receiver board is provided with a plurality of partition boards corresponding to each of the plurality of lines to be connected.
The plurality of terminal devices are arranged in a row and are given consecutive numerical numbers in the order of arrangement, and a plurality of groups are formed for each terminal device having the same remainder obtained by dividing the numerical numbers by the number of partition boards. A tunnel disaster prevention system characterized in that each line is connected in units of the group.
In the tunnel disaster prevention system according to claim 2 .
The tunnel disaster prevention system is characterized in that the plurality of terminal devices have a plurality of types and are arranged in a row for each type.
In the tunnel disaster prevention system according to any one of claims 1 to 3 .
The tunnel disaster prevention system, wherein the plurality of terminal devices are at least one of a fire detector, a manual notification device, a fire hydrant switch, and a water spray switch installed in a row at predetermined intervals.

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