JPH06259688A - Disaster preventing facility for tunnel - Google Patents

Abstract

PURPOSE:To provide a transmission system for the disaster preventing facility for tunnel which can perform communication with an attendant board behind a disconnected part even when a shared cable connected to plural attendant boards and disaster prevention boards is disconnected at any part. CONSTITUTION:In the case of one tunnel for which cable path grooves 13 and 15 are formed, plural attendant boards 12a-12m installed at every prescribed block are provided on the wall side of one cable groove 13, and a shared cable 17 is arranged while being passed through one cable path groove 13, successively serially connecting the attendant boards, connecting the head to a disaster prevention board 42 and connecting the end to the final attendant board 12m of the tunnel, this facility is provided with an auxiliary transmission cable 40 which which connects one terminal to the final attendant board 12m inside the tunnel and connects the other terminal through a cross groove formed at the upper part of the tunnel edge part or under a road and the other cable path groove 15 to the disaster prevention board 42.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disaster prevention facility for a tunnel for detecting a fire in a tunnel or controlling a fire extinguishing facility, especially when a cable connecting a fire terminal such as a relay board in the tunnel is broken. , Related to disaster prevention equipment for tunnels that can communicate with terminals for fires after the disconnection.

[0002]

2. Description of the Related Art Generally, as a structure of a disaster prevention facility for a tunnel, there is a large amount of information for controlling and monitoring various terminal devices such as a fire detector and an automatic valve of a fire extinguishing facility when the length of the tunnel is long. A relay board having the same function as a part of the disaster prevention board is arranged in each predetermined section to share the function of the disaster prevention board, and a dedicated cable is provided between each of the relay boards and the disaster prevention board. There is a wired first transmission scheme. In addition, there is a second transmission system in which a plurality of relay boards and disaster prevention boards arranged in each predetermined section in the tunnel are connected to the plurality of relay boards by a common shared cable. A disaster prevention facility for a tunnel using the first transmission method or the second transmission method will be described below. FIG. 6 is a schematic configuration diagram showing the first transmission method. In the figure, there is an up lane tunnel and a down lane tunnel, and a case where these tunnels are controlled and monitored by one disaster prevention panel will be described. Reference numeral 1 is a disaster prevention board (receiver) for monitoring the up lane tunnel and the down lane tunnel.

2a to 2m are relay boards arranged in predetermined sections of tunnels for down lanes, and 2aa to 2mm are dedicated cables connected to the relay boards 2a to 2m.
4a to 4m are relay boards arranged in each predetermined section of the tunnel for the up lane, and 4aa to 4mm are dedicated cables connected to the relay boards 4a to 4m. Although illustration is omitted, the tunnel for the up lane and the tunnel for the down lane do not show fire, but a fire detector that automatically detects a fire in the tunnel, a driver of a car passing through the tunnel, etc. When it is found, a manual alarm to notify the manager of the management center, an automatic valve to automatically extinguish the fire, a water spray fire extinguishing equipment such as a water spray head, a fire hydrant, etc. are arranged, and by a transmission line not shown It is connected to each relay board.

Further, a predetermined number of fire detectors and automatic valves of water spray fire extinguishing equipment are arranged in each section divided by 50 m, and a manual alarm and a fire hydrant are set by a predetermined number in each section divided every 200 m. It is arranged. In the first transmission method as described above, the relay boards 2a to 2m arranged in the tunnel for the down lane have their own dedicated cables 2aa.
~ The fire detection and fire extinguishing control information was exchanged with the disaster prevention board 1 via the dedicated cable 2 mm. Further, the relay boards 4a to 4m arranged in the tunnel for the up lane carry out the exchange of information on fire detection and fire suppression control with the disaster prevention board 1 via the dedicated cables 4aa to 4mm.

In the first transmission system as described above, since a dedicated cable is provided for each of a plurality of relay boards, even if one of the dedicated cables is disconnected, only the relay board will be damaged, and the tunnel will be damaged. Considered as a whole, it is not such an obstacle. However, since a dedicated cable is connected to each relay board, the number of cables increases and the cost increases. Therefore, the second method described above may be used. FIG. 7 shows a conventional disaster prevention facility using the second transmission method. In the figure, the case where there is one tunnel will be described.

In the figure, 10 is a disaster prevention board, and 12a-12.
m is a relay board arranged in each predetermined section in the tunnel. Reference numeral 13 is a cable groove provided on the edge of the side wall inside the tunnel. In this cable groove 13, a lid 15 is provided for stripping or repairing the cable at predetermined intervals.
Are arranged. 17 is a relay board 12a-12m
And a common cable common to a plurality of relay boards that connect the disaster prevention board 10. This shared cable 17 is for disaster prevention board 10 and 1
A cable 17a for connecting the second relay board 12a and a cable 17b for connecting the relay boards to the relay board 1 to cable 1
It is made of 7 m, and the connection to each relay board is connected to the relay board through the cable hole of the cable groove 13.

Although not shown, the fire detector and the water spray fire extinguishing equipment are arranged in a predetermined number every 50 m, and the manual alarm and the fire hydrant are divided every 200 m, for example. A predetermined number is arranged for each section. In the transmission system as shown in FIG. 7, addresses are set in the relay boards 12a to 12m, and the disaster prevention board 10 collects the fire detection information from the relay boards 12a to 12m by polling using the shared cable 17 and the control information. Was sent and the predetermined processing was performed.

However, in such a transmission system, for example, when an accident occurs, oil flows in from the abutting portion of the lid 15 of the cable groove 13, and when the accident causes a fire, the common cable 17 is placed at the abutting portion. If the car collides with the shared cable 17 connected to the relay board that is pulled out from the cable groove 13 due to an accident, the wire will be melted and broken, the wire will be exposed and short-circuited, or the wire will be shared If the cable 17 is broken or the common cable 17 between any relay boards is broken due to corrosion, there is 1 or 1 and the fire detection information is collected from the relay board after the disconnection point and fire extinguishing control is performed. It becomes impossible to send information. FIG. 8 is a schematic configuration diagram in which the second transmission method is used for the tunnels for the upper and lower lanes. In the figure, 20
Is a disaster prevention board for the tunnel for the down lane, 21a to 21m are relay boards arranged in predetermined sections in the tunnel for the down lane, and 23 is a cable groove provided on the edge of the side wall for the tunnel for the down lane , 26 are disaster prevention boards 20 and relay boards 21
It is a shared cable for the down lane connected to a to the relay board 21m.

Numeral 30 is a disaster prevention board for tunnels for up lanes, 3
1a to 31m are relay boards arranged in predetermined sections in an up lane tunnel, 33 is a cable groove provided at an edge of a side wall in the up lane tunnel, and 36 is a disaster prevention board 30 and a relay board 31a. ~ A shared cable for the up lane connected to the relay board 31m. In the transmission system shown in FIG. 8, the disaster prevention panel 20 polls by using the shared cable 26 for the down lane in the tunnel for the down lane to collect the fire detection information and the like from each of the relay panels 21a to 21m. Then, predetermined processing was performed. Further, in the tunnel for the up lane, the disaster prevention panel 30 polls by using the shared cable 36 for the up lane and relay boards 31a to 31a.
Fire detection information from 31m was collected and the prescribed processing was performed.

[0010]

In the conventional disaster prevention equipment for a tunnel as described above, in order to reduce the cable cost, a plurality of relay boards and disaster prevention boards arranged in predetermined sections in the tunnel are provided. The second transmission method is used in which a common transmission cable is connected to the relay board. For example, in the case of a single tunnel, a plurality of relay boards arranged in each predetermined section in the tunnel and the disaster prevention board are connected by one system of a common cable. A cable groove in which the shared cable is arranged is formed inside the tunnel, and a relay board is also arranged in each predetermined section in the tunnel.

Therefore, the shared cable is taken out from the cable groove and connected to the relay board, and the shared cable is exposed between the cable groove and the relay board. For this reason, a fire in the tunnel may melt and cause the wire to break, or the car that has caused an accident may come into contact with this shared cable and break, or the oil of the car that caused the accident may cover the cable groove. If the oil enters at the butt section and causes a fire, the shared cable may break at the butt section or the shared cable may deteriorate due to deterioration of the shared cable. There was a problem that information on fire detection from the panel might be collected and the fire extinguishing equipment could not be controlled. Even if there is such a disconnection, connect another shared cable to the final relay board and connect the same cable groove so that it can collect information on fire detection from the relay board and control the fire extinguishing equipment. Although it may be possible to connect to the disaster prevention board via the same cable groove, it is good if the cable groove is large enough, but if it is small it may not fit, or it is the same cable groove. Therefore, there is a problem that both of them may be disconnected due to an accident or the like in the tunnel, making it impossible to collect fire detection information from the relay board after the disconnection point. Also, if there are tunnels for the upper and lower lanes, a relay board is placed in each of the up lane tunnels and the down lane tunnels for each predetermined section, and a shared cable is placed in each tunnel to detect fire. However, the same wire breakage as above may occur.

In order to enable the disaster prevention board to collect information on fire occurrence from each relay board and control fire extinguishing equipment even if a wire breakage occurs, another one for folding back in the cable groove is used as described above. Although it is possible to provide a shared cable for a book, there is a problem in that the same problem occurs because the same cable groove is used. The present invention has been made to solve the above problems, and any one of a relay board, a fire detector, an automatic valve of a fire extinguishing facility, a cable for connecting a plurality of fire terminals such as a fire hydrant to a disaster prevention board. The objective is to obtain a disaster prevention facility for a tunnel that can communicate with a fire terminal after the disconnection point even if the disconnection occurs at that point.

[0013]

[Means for Solving the Problems] A disaster prevention facility for a tunnel according to the first invention is a dedicated cable and an auxiliary transmission cable having a disaster prevention panel, a cable path formed in the tunnel, and a tip connected to the disaster prevention panel. And a fire terminal that is connected to a dedicated cable or auxiliary transmission cable and is controlled and monitored by the disaster prevention panel.The dedicated cable and auxiliary transmission cable are loop-shaped cables with their rear ends connected. The dedicated cable and the auxiliary transmission cable are routed through different cable paths. A second invention is a disaster prevention board, first and second cable paths formed along the tunnel at different positions in the tunnel, a plurality of fire terminals installed in the tunnel, and a first fire terminal in the tunnel. 1
In the tunnel, a common cable that is routed through the cable route, connects multiple fire terminals in series, the leading edge is connected to the disaster prevention panel, and the last end is connected to the final fire terminal of the tunnel. One to the final fire terminal of the other and the other to the second cable path of the tunnel,
It is equipped with an auxiliary transmission cable connected to the disaster prevention board. In addition, the disaster prevention board communicates with multiple fire terminals in the tunnel by using a shared cable, monitors whether there is a break in the shared cable, and when it detects a break, the auxiliary transmission cable side also immediately It is used to communicate with multiple fire terminals. A third invention is a disaster prevention board, a first cable path formed along the tunnel in the first tunnel, a plurality of fire terminals installed in the first tunnel, and a first cable. Passed through the route, the fire terminals of the first tunnel were sequentially connected in series, the leading edge was connected to the disaster prevention panel, and the last end was connected to the final fire terminal of the first tunnel. A first shared cable, a second cable path formed along the tunnel in a second tunnel juxtaposed to the first tunnel, and a plurality of fire terminals installed in the second tunnel And the first cable route to connect the fire terminals of the second tunnel in series, the leading edge is connected to the disaster prevention panel, and the last end is the final fire of the second tunnel. The second shared cable connected to the terminal and the first tunnel Last one fire terminal of the inner is connected, in which the other is an auxiliary transmission cable connected to the final fire terminal of the second tunnel. In addition, the disaster prevention board has a first transmitting / receiving unit and a second transmitting / receiving unit connected to the first common cable.
The second transmission / reception unit connected to the shared cable of the above, the disaster prevention panel communicates with the relay panel in the tunnel by the first transmission / reception unit, and also monitors the first shared cable for disconnection points. , When a disconnection point is detected, immediately
The second transceiver is used to communicate with the relay board. A fourth invention is a disaster prevention board, a first cable path formed along the tunnel in the first tunnel, and a first invention.
Fire terminals installed in the tunnel of the first tunnel and the first cable route to connect the fire terminals of the first tunnel in series, the leading edge is connected to the disaster prevention board, and the last A first shared cable having an end connected to the final fire terminal of the first tunnel and a second cable formed along the tunnel in a second tunnel juxtaposed to the first tunnel.
, The plurality of fire terminals installed in the second tunnel, and the plurality of fire terminals of the second tunnel, which are passed through the second cable path, are serially connected in series.
A second tunnel with a second shared cable with the leading edge connected to the disaster prevention board and the last end connected to the final fire terminal of the second tunnel, and the final fire in the first tunnel. One is connected to the terminal for use, and the other is connected to the disaster prevention board by being routed to the second cable route or the third cable route formed in the second tunnel at a position different from the second cable route. A first auxiliary transmission cable,
One is connected to the final relay board in the second tunnel, and the other is the first cable path or the fourth cable path formed at a position different from the first cable path in the first tunnel. And a second auxiliary transmission cable connected to the disaster prevention board. Further, the disaster prevention board is composed of a disaster prevention board for the first tunnel and a disaster prevention board for the second tunnel, and the disaster prevention board for the first tunnel uses the first auxiliary transmission when the first shared cable is broken. The cable is also used to communicate with multiple fire terminals in the first tunnel, and the disaster prevention panel in the second tunnel uses the second auxiliary transmission cable when the second shared cable is broken. ,
It communicates with a plurality of fire terminals in the second tunnel.

[0014]

In the first and second aspects of the invention, the plurality of fire terminals are connected in series in series by being passed through the first cable path of the tunnel, the leading edge is connected to the disaster prevention panel, and the last end is If any part of the cable connected to the final fire terminal in the tunnel is broken, one is connected to the final fire terminal in the tunnel and the other is provided at a position different from the first cable route. An auxiliary transmission cable is used that is routed through the second cable path provided and connected to the disaster prevention board. In addition, the disaster prevention board communicates with the fire terminal in the tunnel through the shared cable, monitors whether there is a broken point in the shared cable, and when the broken point is detected, the auxiliary transmission cable side is also used immediately. And communicate with the fire terminal. In the third invention, a first cable path provided in the first tunnel and a plurality of fire terminals, and a plurality of fire terminals of the first tunnel passed through the first cable path are provided. The first shared cable, which is connected in series in series, the leading edge is connected to the disaster prevention board, and the last end is connected to the final fire terminal, and the second tunnel provided in parallel with the first tunnel. The second cable route and the multiple fire terminals provided in the and the second cable route are connected to the multiple fire terminals in the second tunnel in series, and the most advanced disaster prevention Connected to the board,
And when the second end is provided with a second shared cable connected to the final fire terminal of the second tunnel,
When either the first shared cable or the second shared cable is broken, one is connected to the final fire terminal in the first tunnel and the other is the final fire terminal in the second tunnel. The auxiliary transmission cable connected to the first shared cable or the second shared cable is used.

Further, the disaster prevention board has a first transmitting / receiving section connected to the first common cable and a second transmitting / receiving section connected to the second common cable, and the disaster prevention board is provided by the first transmitting / receiving section. While communicating with the relay board in the tunnel, the first shared cable is monitored for a disconnection point, and when the disconnection point is detected, the second transmission / reception unit is also used immediately to disconnect the disconnection point. Communicate with the relay board after the point. In the fourth invention, the first cable path provided in the first tunnel and the plurality of fire terminals and the plurality of fire terminals connected in series are passed through the first cable path. , The first shared cable with the leading edge connected to the disaster prevention panel and the last end connected to the final fire terminal of the first tunnel, and the second tunnel provided in parallel with the first tunnel A second cable path provided in
And a plurality of fire terminals and the second cable route through the second cable path to sequentially connect the plurality of fire terminals of the second tunnel in series, the leading edge is connected to the disaster prevention board, and the last end is the last. The second auxiliary cable connected to the fire terminal of the first auxiliary transmission cable is connected to the first auxiliary transmission cable.
One is connected to the final fire terminal in the tunnel, and the other is connected to the disaster prevention board through the second or third cable path of the second tunnel.

Also, one of the second auxiliary transmission cables is connected to the final fire terminal in the second tunnel, and the other is connected to the disaster prevention panel through the first or fourth cable path groove of the first tunnel. To do. Further, this disaster prevention board is composed of a disaster prevention board for the first tunnel and a disaster prevention board for the second tunnel. The disaster prevention board for the first tunnel is the first when the shared cable of the first tunnel is broken. The second auxiliary transmission cable is also used to communicate with multiple fire terminals in the first tunnel, and the disaster prevention panel of the second tunnel is disconnected when the shared cable of the second tunnel is broken. Cables are also used to communicate with multiple fire terminals in the second tunnel.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a schematic configuration diagram of one embodiment of disaster prevention equipment for a tunnel according to the first and second inventions. In the figure, 12
a to 12m are relay boards as fire terminals, 13 is a first cable groove as a first cable path provided at a side wall edge which is one side wall of the tunnel, and 14 is another side wall of the tunnel Is a second cable groove as a second cable path provided on the side wall edge, 15 is a lid of the cable groove, and 17 (17a to 17m) is a plurality of relay boards 12a.
It is a common cable common to ~ 12m. As shown in the figure, a common cable 17 (cables 17a to 17m) is arranged in one of the cable grooves 13 in the tunnel, and the relay boards 12a to 12m are connected by feed wiring or series connection, that is, sequentially connected in series. Connected to. 40 is an auxiliary transmission cable. The auxiliary transmission cable 40 is connected to the final relay board 12m, and is connected to the disaster prevention board 42 via a route different from the one cable groove 13 in the tunnel. Is connected to the disaster prevention board 42 via the other cable groove 14 provided on the lower part of the other side wall portion and the upper part of the end of the tunnel. This auxiliary transmission cable 40 is put in a pipe or the like at the end of the tunnel. Also, the relay boards 12a to 1
Although not shown, various devices such as a fire detector, a manual alarm, an automatic valve of a water spray fire extinguisher, and a fire hydrant are connected to each of the 2 m via electric lines such as transmission lines.

Further, depending on the tunnel length, an amplification circuit 41 (hereinafter referred to as an amplifier) that amplifies a signal as necessary to correct the signal attenuation is provided with an auxiliary transmission cable 40, a shared cable 17, or a relay board 12a. It may be provided at a predetermined interval of 12 m. Reference numeral 42 is a disaster prevention board according to the present invention. The disaster prevention board 42 includes at least a disconnection monitoring circuit that monitors the disconnection of the shared cable 17. When a disconnection occurs, the disconnection point is identified, and the shared cable 17 is used to reach the disconnection point. The fire detection information of the relay board is collected and controlled, and after the disconnection point, the auxiliary transmission cable 40 is used to collect the relay board and fire detection information after the disconnection point and control the fire extinguishing equipment. .

The transmission system of FIG. 1 as described above will be described below. For example, the first relay board 12 due to an accident
When oil flows into the abutment part of the lid 15 in the cable groove 13 between the a and the second relay board 12b, and a fire occurs due to an accident, the common cable 17 at the inflowing point is broken or covered. The wires in the cable melt and become short-circuited. However, if the auxiliary transmission cable 40 is the shared cable 17,
Since the auxiliary transmission cable 40 is connected to the disaster prevention panel 42 through a route different from that, the auxiliary transmission cable 40 will not be disconnected or short-circuited due to a fire associated with an accident. Therefore, if this auxiliary transmission cable 40 is used, the disaster prevention board 42 will be the relay board 12
It is possible to communicate with the relay boards after b (including the relay board 12b). Further, when the shared cable 17b between the first relay board 12a and the second relay board 12b is corroded due to, for example, corrosion due to exhaust gas, the auxiliary transmission cable 40 is used in the same manner as in the relay board 12b and the subsequent relay boards 12b. It is possible to communicate with the relay board (including the relay board 12b).

Further, even when the common cable 17 connected to the second relay panel 12b is disconnected due to an accident or the like, the auxiliary transmission cable 40 is used to relay the relay panels after the relay panel 12c (relay). Board 1
2c) (including 2c). When such a transmission method is used, the disaster prevention panel 42 has a configuration described below.

FIG. 2 is a schematic configuration diagram of an embodiment of the disaster prevention board 42 according to the first and second inventions. Reference numeral 43 is a controller, which is provided with at least an information collection control means 45 and a transmission line switching means 46. Information collection control means 4
5 is a relay board address and a collection command (hereinafter referred to as a collection command signal) or a relay board when collecting fire detection information or the like or transmitting control information from the relay boards 12a to 12m arranged in the tunnel. A control signal to which an address is added is output, and predetermined processing is performed based on the response signal from the relay board. That is, it is polling control.

Further, when the disconnection monitoring circuit 48 notifies the disconnection point, a collection command signal or the like is sequentially output from the relay board at a stage subsequent to the disconnection point. At least the address of the relay board is added to the response signal of the relay board. Further, the transmission line switching means 46 includes a disconnection monitoring circuit 48.
Until the disconnection occurrence signal is input, the shared cable 17 is used by using only the first transmission / reception unit 50. With the input of the disconnection occurrence signal, the first transmission / reception unit 50 is connected.
Besides, the second transmission / reception unit 52 is also used to use the auxiliary transmission cable 40. The information collection control means 45 and the transmission line switching means 46 are implemented by an MPU (microcomputer) or the like.

Reference numeral 50 is a first transmission / reception unit. The shared cable 17 is connected to the first transmission / reception unit 50, and while the transmission line switching unit 46 is selecting, the collection command signal, the control signal, etc. from the information collection control unit 45 are transmitted via the shared cable 17. Then, the response signal of the relay board or the like is received from the shared cable 17 and output to the inside.

Reference numeral 48 is a disconnection monitoring circuit. The disconnection monitoring circuit 48 reads the address of the relay board from the signal every time the first transmission / reception unit 50 sends the collection command signal or the control signal to the shared cable 17, and the response signal from the relay board returns a predetermined number of times. If there is not, it is determined that there is a disconnection between the relay board and the relay board immediately before, and the disconnection occurrence signal is output to the transmission line switching means 46 and the disconnection location is output to the information collection control means 45. . 52 is a second transmission / reception unit. The second transmission / reception unit 52 is connected to the other side of the auxiliary transmission cable 40, and inputs a collection command signal or a control signal from the information collection control unit 45 in response to the input of the switching signal from the transmission line switching unit 46. , Through the auxiliary transmission cable 40, receives a response signal or the like from the auxiliary transmission cable 40, and outputs it to the information collection control means 45.

Further, the disaster prevention panel 42 is provided with a display device for displaying a fire area and a control state of the fire extinguishing equipment, an audio device, a printer, etc., but their illustration and description are omitted. The operation of the transmission system of the disaster prevention equipment of the tunnel configured as described above will be described below. FIG. 3 is a sequence diagram of the disaster prevention board and the relay board according to the first and second inventions. In the figure, a case where the shared cable 17b between the first relay board 12a and the second relay board 12b is broken will be described as an example. First, when the information collection control means 45 of the disaster prevention board 42 outputs an information collection command signal to the first transmission / reception section 50 for the first relay board 12a in the tunnel, the first transmission / reception section 50 collects the information. The command signal is transmitted via the shared cable 17 (a in FIG. 3). When the first relay board 12a receives this information collection command signal and, for example, the address of the information collection command signal is the same as its own address, for example, 1 it is taken in and the status information such as detection is sent as a response signal. Is sent to the disaster prevention board 42 via the shared cable 17 (b in FIG. 3).

At the time of sending this information, the address of the relay board 12a of its own is added to the status information such as detection and control results and sent. Next, the first transmission / reception unit 50 of the disaster prevention board 42 receives the response signal from the relay board 12a, and the information collection control means 4
Output to 5. At this time, the disconnection monitoring circuit 48 reads the address of the signal every time the first transmission / reception unit 50 outputs a collection command, reads the address of the response signal sent from the relay board, and sets the address as the purpose. It is being monitored whether it is the address of the relay board.

As another method, the disconnection monitoring circuit 48 may constantly monitor the voltage between the second transmission / reception section 52 and the auxiliary transmission cable 40, and determine that the voltage is disconnected when the voltage disappears. Next, the information collecting control means 45 outputs a collecting command signal to the second relay board 12b when a response signal is received from the first relay board 12a. And the first
The transmitting / receiving unit 50 of the shared cable 1
7 (a in FIG. 3). However, since there is a disconnection between the first relay board 12a and the second relay board 12b, the collection command signal does not reach the second relay board 12b. Therefore, the second relay board 12b does not output the response signal (c in FIG. 3).

In such a state, the disconnection monitoring circuit 4
No. 8 has no response signal from the relay board 12b, so it is determined that the first relay board 12a and the second relay board 12b are disconnected, and the information collection control means 45 is notified of the disconnection point. A switching signal is output to the transmission line switching means 46 (e in FIG. 3). Next, when the information collecting control means 45 is informed that the second relay board 12b is disconnected, 2
Collection command signal (2-instruction code in the figure) for collecting information of the second relay board 12b, third relay board 12c, ...
...... Sequentially outputs collection commands for collecting information from the m-th relay board 12m (f in FIG. 3).

Further, the transmission line switching means 46 is connected to the second transmission / reception section 52 in addition to the connection between the information collection control means 45 and the first transmission / reception section 50 in accordance with the input of the switching signal. As a result, the second transmission / reception unit 52 transmits a collection command signal for collecting the information of the second relay board 12b, a collection command for collecting the information of the third relay board 12c, ... The signals are sequentially output through the auxiliary transmission cable 40 (g in FIG. 3), and the state of the auxiliary transmission cable 40 becomes the state (h in FIG. 3).

The second relay board 12b has auxiliary transmission cable 40, cable 17m, cable 17m-
1, ... The collection command signal is received via the cable 17c, and the response signal is sent to the cable 17c.
It is output to the second transmitting / receiving unit 52 via m-1, the cable 17m, and the auxiliary transmission cable 40 (i in FIG. 3). In this way, the subsequent third relay board 12c, the fourth relay board 12d, ..., and the mth relay board 12m use the auxiliary transmission cable 40 as shown in i and k of FIG. It becomes possible to exchange the collection command signal and the response signal. Then, the above operation is repeated until the common cable 17b between the relay boards 12a and 12b is normally restored.

Next, the case where there are tunnels for the upper and lower lanes will be described. FIG. 4 is a schematic configuration diagram of one embodiment of a disaster prevention facility for a tunnel of the third invention. In the figure, 21a to 21m are relay boards as an example of a fire terminal provided in a down lane tunnel, and 23 is provided as a first cable path of a down lane tunnel at a side wall edge portion which is a side wall portion. It is the first cable groove. 26 is
The relay boards 21a to 21m are connected to the disaster prevention board 60 by wiring or in series, that is, they are sequentially connected in series to form a first shared cable. 31a to 31m are relay boards as an example of a fire terminal provided in the up lane tunnel, and 33 is a second cable groove provided as a second cable route in the up lane tunnel. 36 is a relay board 31a-
This is a second common cable in which 31 m is connected to the disaster prevention board 60 by feed wiring connection or series connection, that is, sequentially connected in series.
In addition, the relay boards 21a to 21m of the tunnel for the down lane,
Although illustration is omitted, each of the relay boards 31a to 31m of the up lane tunnel includes various devices such as a fire detector, a manual alarm, an automatic valve of a water spray fire extinguisher and a fire hydrant, which are provided in each tunnel. It is connected via a transmission line.

25 is the final relay board for the up lane tunnel 31 m and the final relay board for the down lane tunnel 21 m
Auxiliary transmission cable connected to and. The auxiliary transmission cable 25 is connected via a pipe or the like and via the upper part of the end of each tunnel. In this case, for example, when the relay board 21a and the relay board 21b of the tunnel for the down lane are disconnected, the relay board is relayed via the shared cable 36 and the auxiliary transmission cable 25 of the tunnel for the up lane. 21m, relay board 21m-1, ..., relay board 2
The disaster prevention board 60 can obtain the fire detection information and the like from 1b. The disaster prevention board 60 in this case has the same structure as that of FIG. 2, but normally, the relay board 21 for the down lane is used.
a-Relay board 21m to relay lanes 31m-31 for the up lane
Fire detection and control information is exchanged in order up to a.
When a disconnection is detected, information is exchanged from the up lane side. That is, when there is a disconnection between the relay board 21a and the relay board 21b of the tunnel for the down lane,
Relay panel 21b for the down lane tunnel ... Relay panel 21m
Common cable 36
Send to.

This collecting command signal is connected to the common cable 26 for the tunnel for the down lane and the common cable 36 for the tunnel for the up lane by the auxiliary transmission cable 25. A collection command signal is sent to the relay board that operates, and the fire detection information and the like from the relay board is transmitted to the shared cable 36 and the auxiliary transmission cable 2.
5 and the common cable 26 will be received by the disaster prevention board 60. Also, I decided to pass this auxiliary transmission cable 25 through the upper part of the end of each tunnel.
2 cable grooves as cable routes in both tunnels
If there is one, it will be the disaster prevention equipment described below.

FIG. 5 is a block diagram showing an embodiment of the disaster prevention equipment of the fourth invention. In the figure, 21a to 21m are relay boards provided in the down lane tunnel, and 23 is a first cable groove formed as a first cable path at a side wall edge portion which is a side wall of the down lane tunnel. 24 is the fourth
The fourth cable groove formed on the edge portion of the other side wall portion, which is a position different from the first cable groove 23 in the tunnel for the down lane, is a cable path of the first cable groove 23. One is a disaster prevention board 73 for the down lane.
Connected to the relay boards 21a to 21m, the first shared cable for the down lane, 31a to 31m are the relay boards provided in the up lane tunnel, and 33 is the second cable route, and is the up lane. The second cable groove 34, which is formed on the side wall edge portion that is the side wall portion of the traffic tunnel, serves as a third cable path and is located at a position different from the second cable groove 33 in the up lane tunnel. A third cable groove formed at the edge of the side wall, and 36 is a second cable groove 3
No. 2 for the up lane, which is common to the relay boards 31a to 31m, and which is arranged in No.
It is a shared cable. The first and second common cables 26 and 36 are used for the relay boards 21a to 21 of the respective tunnels.
m, 31a to 31m are respectively connected by feed line connection, serial connection, or the like, that is, sequentially connected in series. 70 is an auxiliary transmission cable for the up lane. The auxiliary transmission cable 70 for the up lane connects one to the final relay board 31m of the tunnel for the up lane, and the other one passes through the upper part of the tunnel end for the up lane and the upper part of the tunnel end for the down lane, and goes down. Via the fourth cable groove 24 in the lane tunnel, the disaster prevention board 72 of the up lane tunnel
It is connected to the. The auxiliary transmission cable 70 for the up lane is put in a pipe or the like at the end of the tunnel.

Reference numeral 71 is an auxiliary transmission cable for the down lane. One of the auxiliary transmission cables 71 for the down lane is connected to the final relay board 21m of the tunnel for the down lane, the other is through the tunnel end for the down lane and the tunnel end for the up lane, and the tunnel for the up lane. Third cable groove 3 in
4 is connected to the disaster prevention board 73 of the tunnel for the down lane. The auxiliary transmission cable 71 for the down lane is put in a pipe or the like at the end of the tunnel. further,
Depending on the tunnel length, an amplifier circuit (hereinafter referred to as an amplifier) that amplifies the signal as necessary to correct the signal attenuation may be provided at predetermined intervals. Reference numeral 72 is a tunnel disaster prevention board for the up lane, and 73 is a tunnel disaster prevention board for the down lane. The configuration of the disaster prevention panel 72 for the tunnel for the up lane and the disaster prevention panel 73 for the tunnel for the down lane is at least equipped with a disconnection monitoring circuit for monitoring the disconnection of the common cable as in FIG. 2, and when the disconnection occurs. Identifies the disconnection point, collects and controls the fire detection information of the relay panel up to the disconnection point using the shared cables 36 and 26 up to the disconnection point, and the relay panel after the disconnection point The collection and control of the fire detection information is switched to use the auxiliary transmission cables 70 and 71.

The transmission system of FIG. 5 as described above will be described below. For example, in the event of an accident or the like, oil flows into the abutting portion of the lid 15 of the cable groove 23 between the first relay board 21a and the second relay board 21b in the tunnel for the down lane, and a fire occurs from the accident. , The common cable 26 at the inflowing point is broken or the coating is melted, the line in the cable is short-circuited, and the disaster prevention board 73 of the tunnel for the down lane is in communication with the relay boards after the relay board 21b. become unable. However, the auxiliary transmission cable 71 for the down lane
Through the cable groove 34 of the tunnel for another up lane, the tunnel end for the up lane, and the tunnel end for the down lane,
Since it is connected to the final relay board 21m of the tunnel for the down lane, the auxiliary transmission cable 71 for the down lane will not be disconnected or short-circuited due to the fire accompanying the accident.

Therefore, by using the auxiliary transmission cable 71 for the down lane, it is possible to communicate with the relay boards after the relay board 21b (including the relay board 21b). Similarly, when the shared cable 26 between the first relay board 21a and the second relay board 21b of the tunnel for the down lane is corroded due to corrosion or the like, the auxiliary transmission cable 71 for the down lane is similarly used. Then, communication with the relay boards after the relay board 21b (including the relay board 21b) can be performed. Further, even if the common cable 26 connected to the second relay board 21b is broken due to an accident in the tunnel for the down lane, the relay is performed by using the auxiliary transmission cable 71 for the down lane. It is possible to communicate with the relay boards after the board 21c (including the relay board 21c). Also, for example, due to an accident or the like, oil flows from the butting portion of the lid 15 into the second cable groove 33 between the first relay board 31a and the second relay board 31b in the tunnel for the up lane, and from the accident, In the event of a fire, the common cable 36 at the point of the inflow may break or the coating may melt,
The line in the cable is short-circuited, and the disaster prevention board 72 of the tunnel for the up lane cannot communicate with the relay boards after the relay board 31b.

However, the auxiliary transmission cable 7 for the up lane
0 is the fourth cable groove 2 of the tunnel for another down lane
4. Since it is connected to the final relay board 31m of the tunnel for the up lane through the upper part of the tunnel end for the down lane and the upper part of the tunnel end for the up lane, this auxiliary transmission cable 70 for the up lane is used. Will not be disconnected or short-circuited due to the fire accompanying the accident. Therefore, when the auxiliary transmission cable 70 for the up lane is used, the relay board 31b
It is possible to communicate with the subsequent relay boards (including the relay board 31b). In addition, the first relay board 31a and the second relay board 31b of the tunnel for the up lane are corroded due to, for example, corrosion.
Similarly, when the shared cable 36 between the two is corroded, if the auxiliary transmission cable 70 for the up lane is used, the relay board 3
It is possible to communicate with the relay boards 1b and later (including the relay board 31b). Further, even if the common cable 36 connected to the second relay board 31b is broken due to an accident in the tunnel for the up lane, the relay is performed by using the auxiliary transmission cable 70 for the up lane. It is possible to communicate with the relay boards after the board 31c (including the relay board 31c).

In the above embodiment, the auxiliary transmission cables 25, 40, 70, 71 are arranged through the upper part of the tunnel end, but the cable groove is formed at the lower part of the tunnel end so as to cross the road. If so, it may be routed through the cable groove of a different route in the tunnel. In the above embodiment, the auxiliary transmission cables 40, 7 are connected to the cable grooves 14, 24, 34 at the edge of the tunnel.
Although the cable grooves (cable paths) for 0 and 71 are used, another path such as a slam passage or a work road may be used, or may be provided at the bottom of the tunnel.

In each of the above-described embodiments, the case where the relay board is used as a fire terminal has been described. However, a fire detector, a fire extinguishing facility, or a fire hydrant is used as a fire terminal, and a common cable is used for sending wiring connection or series connection. You may make it connect in series one by one. In the embodiment of the fourth aspect of the invention, the first auxiliary transmission cable is provided in the third cable groove which is the third cable path, and the second auxiliary transmission cable is provided in the fourth.
The first auxiliary transmission cable is arranged in the second cable groove, which is the second cable path, together with the second shared cable, and the second auxiliary cable is arranged. The transmission cable may be arranged together with the first shared cable in the first cable groove that is the first cable path.

Further, in the embodiment of the fourth aspect of the invention, when there is a third tunnel for work or the like used for inspection or the like in addition to the first and second tunnels, the first and second tunnels are used. The auxiliary transmission cable may be arranged in the third tunnel.

[0042]

As described above, according to the first or second invention, a plurality of fire terminals are sequentially connected in series by being passed through the first cable path of the tunnel, and the leading edge is a disaster prevention board. In the case of one tunnel with a shared cable that is connected and the last end is connected to the final fire terminal of the tunnel, connect one to the final fire terminal in the tunnel,
Since the other side is equipped with the auxiliary transmission cable connected to the disaster prevention panel through the second cable route provided at a position different from the first cable route in the tunnel, even if any part of the shared cable is disconnected. Since the auxiliary transmission cable passing through a route different from that of the shared cable is not disconnected at the same time, the effect that the auxiliary transmission cable can communicate with the fire terminal can be obtained. In addition, the disaster prevention board communicates with multiple fire terminals in the tunnel by a shared cable, monitors whether there is a disconnection point on the shared cable, and when a disconnection point is detected,
Since I also decided to use the auxiliary transmission cable side immediately,
Even if any part of the common cable is broken, it is possible to communicate with the relay board. According to the third invention, the first shared cable is arranged in the first
If a second tunnel in which the second shared cable is arranged is formed in parallel with the first tunnel and the second tunnel is connected in parallel to the first tunnel, connect one to the final fire terminal in the first tunnel. , The other end is connected to the final fire terminal of the second tunnel through the crossing or the like formed above the end of the first tunnel or under the road, so that the first shared cable or Even if the second shared cable is broken, the second
Since the common cable or the first common cable is not disconnected at the same time, it is possible to obtain an effect that the fire terminal can be communicated through the second common cable or the first common cable and the auxiliary transmission cable. There is. Further, in this case, only a cable having almost the same length as the conventional one is required, and there is an effect that there is no waste in wiring. Further, the disaster prevention board is provided with a first transmitting / receiving section connected to the first common cable and a second transmitting / receiving section connected to the second common cable, and the disaster prevention board is provided in the tunnel by the first transmitting / receiving section. When communicating with the fire terminal and monitoring the shared cable for breaks, when a break is detected,
Since it is possible to immediately use the second transmitting / receiving unit to communicate with the fire terminal, it is possible to obtain the effect of being able to communicate with the fire terminal up to and after the disconnection point. Fourth
According to the invention, when the first tunnel in which the first shared cable is arranged and the second tunnel in which the second shared cable is arranged are formed along the first tunnel, One is connected to the final fire terminal in the first tunnel, and the other is connected through the cable path of the second tunnel through the cable path of the second tunnel through the crossover formed above the end of the first tunnel or under the road. Connect the auxiliary transmission cable of to the disaster prevention board,
Furthermore, one of the second auxiliary transmission cables is connected to the final fire terminal in the second tunnel, and the other is connected to the other end of the second tunnel via a crossing or the like formed above the end of the tunnel or under the road. Since the disaster prevention panel is connected through the cable path of the first tunnel, the second auxiliary transmission cable or the first auxiliary transmission cable is disconnected at the same time even if the first shared cable or the second shared cable is disconnected. Therefore, there is an effect that communication with the fire terminal can be performed via the second shared cable or the first shared cable and the auxiliary transmission cable. The disaster prevention board consists of a disaster prevention board for the first tunnel and a disaster prevention board for the second tunnel.
The disaster prevention board for the first tunnel uses the first auxiliary transmission cable to communicate with the fire terminal of the first tunnel when the shared cable of the first tunnel is broken, and When the shared cable of the second tunnel is broken, the disaster prevention panel of the tunnel uses the second auxiliary transmission cable to send a signal to the fire terminal of the second tunnel, so that the auxiliary transmission cable Since it is possible to send a signal to the fire terminal via the, it is possible to communicate with the fire terminal after the disconnection point.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a transmission system of a disaster prevention facility for a tunnel according to the first and second aspects of the present invention.

FIG. 2 is a schematic configuration diagram of a disaster prevention board according to the first and second inventions.

FIG. 3 is a sequence diagram of a disaster prevention board and a relay board according to the first and second inventions.

FIG. 4 is a schematic configuration diagram of a transmission system of a disaster prevention facility for a tunnel according to a third aspect of the present invention.

FIG. 5 is a configuration diagram showing a transmission system of a fourth invention.

FIG. 6 is a schematic configuration diagram showing a first transmission method.

FIG. 7 is a conventional disaster prevention system using the second transmission method.

FIG. 8 is a schematic configuration diagram in which a second transmission method is used for a tunnel for upper and lower lanes.

[Explanation of symbols]

 13 First Cable Groove (Route) 14 Second Cable Groove (Route) 17 Shared Cable 23 First Cable Groove (Route) 24 Fourth Cable Groove (Route) 25 Auxiliary Transmission Cable 26 First Shared Cable 33 Second cable groove (route) 34 Third cable groove (route) 36 Second shared cable 40 Auxiliary transmission cable 45 Information collection control means 46 Transmission line switching means 48 Disconnection monitoring circuit 70 First auxiliary transmission cable 71 2 auxiliary transmission cable

Claims (7)

[Claims] 1. A disaster prevention board, a cable route formed in a tunnel, a dedicated cable and an auxiliary transmission cable whose tip is connected to the disaster prevention board, and a dedicated cable or an auxiliary transmission cable,
It is composed of a fire terminal that is controlled and monitored by the disaster prevention board, the dedicated cable and the auxiliary transmission cable are loop-shaped cables to which the respective rear ends are connected, and the dedicated cable and the auxiliary transmission cable are respectively Disaster prevention equipment for tunnels characterized by being routed through different cable routes. 2. A disaster prevention board, first and second cable paths formed along the tunnel at different positions in the tunnel, a plurality of fire terminals installed in the tunnel, and inside the tunnel. Shared with the plurality of fire terminals sequentially connected in series through the first cable path, the leading edge is connected to the disaster prevention board, and the last end is connected to the final fire terminal of the tunnel. One is connected to the cable and the final fire terminal in the tunnel,
The other is routed through the second cable path of the tunnel,
A disaster prevention facility for a tunnel having an auxiliary transmission cable connected to the disaster prevention board. 3. The disaster prevention board communicates with a plurality of fire terminals in the tunnel by the shared cable, monitors whether there is a disconnection point in the shared cable, and detects the disconnection point. The disaster prevention equipment for a tunnel according to claim 2, wherein the auxiliary transmission cable side is also used immediately to communicate with the plurality of fire terminals. 4. A disaster prevention board, a first cable path formed along the tunnel in the first tunnel, a plurality of fire terminals installed in the first tunnel, and the first fire path. A plurality of fire terminals in the first tunnel are sequentially connected in series through a cable route, the leading edge is connected to the disaster prevention board, and the last end is connected to the final fire terminal in the first tunnel. First shared cable, a second cable path formed along the tunnel in a second tunnel juxtaposed to the first tunnel, and a plurality of cables installed in the second tunnel Of fire terminals and the plurality of fire terminals of the second tunnel are sequentially connected in series by passing through the first cable path, the leading end is connected to the disaster prevention panel, and the last end is the above-mentioned. Connected to the final fire terminal in the second tunnel A second shared cable; and an auxiliary transmission cable, one of which is connected to the final fire terminal of the first tunnel and the other of which is connected to the final fire terminal of the second tunnel. Tunnel disaster prevention equipment. 5. The disaster prevention board comprises a first transceiver unit connected to a first shared cable and a second transceiver unit connected to a second shared cable, and the disaster prevention panel includes the first transceiver unit. Section communicates with the relay board in the tunnel, monitors the first shared cable for a disconnection point, and when the disconnection point is detected, immediately uses the second transmission / reception section. The disaster prevention equipment for a tunnel according to claim 4, wherein the disaster prevention equipment communicates with the relay board. 6. A disaster prevention board, a first cable path formed along the tunnel in the first tunnel, a plurality of fire terminals installed in the first tunnel, and the first The fire terminal of the first tunnel is sequentially connected in series through a cable route, the leading edge is connected to the disaster prevention panel, and the last end is connected to the final fire terminal of the first tunnel. First shared cable, a second cable path formed along the tunnel in a second tunnel juxtaposed to the first tunnel, and a plurality of cables installed in the second tunnel Fire terminal and the second cable path, and sequentially connecting a plurality of fire terminals of the second tunnel in series, the leading edge is connected to the disaster prevention panel, and the last end is the Connected to the final fire terminal of the second tunnel And a second tunnel in which a second shared cable is arranged, and one is connected to the final fire terminal in the first tunnel, and the other is connected to the second cable path or the second tunnel. A first auxiliary transmission cable connected to the disaster prevention panel through a third cable channel formed at a position different from the second cable channel, and a final relay panel in the second tunnel. To the first cable path or the first cable path.
A second auxiliary transmission cable connected to the disaster prevention panel through a fourth cable path formed at a position different from the first cable path in the tunnel. Disaster prevention equipment. 7. The disaster prevention board comprises a disaster prevention board for the first tunnel and a disaster prevention board for the second tunnel, and the disaster prevention board for the first tunnel is provided when the first shared cable is broken. , The first auxiliary transmission cable is also used to communicate with the plurality of fire terminals in the first tunnel, and the disaster prevention panel of the second tunnel is used when the second shared cable is disconnected. 7. The tunnel disaster prevention equipment according to claim 6, wherein the second auxiliary transmission cable is also used to communicate with a plurality of fire terminals of the second tunnel.