JP2019062590A - Tunnel disaster prevention system - Google Patents

Abstract

To prevent a monitoring function in a tunnel from being lost by promptly enabling a temporary restoration of a power supply unit for its malfunction without increasing the circuit scale of the power supply unit or necessarily controlling the power supply unit as a reserve system.SOLUTION: An externally-attachable regulated power supply 110-1 can be switched and connected to the inputs of DC/DC converters 104-1 to 104-5 via manual switches 106-1 to 106-5. An externally-attachable regulated power supply 110-2 can be switched and connected to the load-side power supply line from the DC/DC converters 104-1 to 104-5 via manual switches 108-1 to 108-5. When an AC/DC converter 102-1 malfunctions, the output of the regulated power supply 110-1 is switched and connected to the input of the DC/DC converter 104-1 by the manual switch 106-1. When the DC/DC converter 104-1 malfunctions, the output of the regulated power supply 110-2 is switched and connected to a power supply line 122-2 by the manual switch 108-1.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a tunnel disaster prevention system which monitors terminal abnormalities such as fire detectors installed in a tunnel by connecting a terminal device such as a fire detector to a disaster prevention receiving board.

  Conventionally, in tunnels such as motorways, emergency facilities are installed to protect human bodies and vehicles from fire accidents that occur in the tunnels.

  Such emergency facilities include a fire detector, a manual notification device, and an emergency telephone for monitoring and reporting fires, a fire hydrant for fire extinguishment and fire spread prevention, and a tunnel housing. In order to protect from fires, a water spray facility that waters fire extinguishing water from a water spray head is installed, etc., and a disaster prevention reception panel is installed to monitor and control the terminal equipment of these emergency facilities, to construct a tunnel disaster prevention system. There is.

  A tunnel disaster prevention system consisting of a disaster prevention reception board and terminal equipment is roughly classified into an R type transmission method and a P type direct transmission method. In the R type transmission method, terminal equipment such as a fire detector whose address is set to a transmission line is connected, and transmission control enables individual management to perform detection and control in units of terminal equipment. In the P-type direct transmission method, a plurality of terminal devices belonging to the same section are connected to the signal line drawn out in the section unit according to the type of the terminal device, and detection and control are performed in the signal line unit.

  Such a tunnel disaster prevention system usually monitors the inside of the tunnel continuously for 24 hours because it can not normally stop the inside of the tunnel when it starts to monitor the inside of the tunnel and the vehicle starts to be sent as the tunnel is completed. to continue.

  In addition, when it becomes impossible to monitor the inside of the tunnel due to maintenance inspection or failure of the facility equipment in the emergency facility, monitoring is carried out by putting up personnel in the supervisor aisle in the tunnel, etc., and in case of emergency preparedness There is also. For this reason, the disaster prevention receiving board is made redundant by, for example, duplicating important main functions such as a monitoring CPU board and a division CPU board.

Japanese Patent Laid-Open No. 2002-246962 Japanese Patent Application Laid-Open No. 11-128381 JP-A-5-284648 JP 2004-357423 A

  However, in the conventional disaster prevention receiving board in which the main function is duplicated in this way, the power supply unit is not duplicated in consideration of aging and cost.

  FIG. 5 is a block diagram showing a power supply unit provided in a conventional disaster prevention receiving board. As shown in Fig. 5, the power supply system of the disaster prevention reception panel includes a 5V DC internal processing system, a 12V DC internal display system, a 24V DC external transmission system, and a 48 VDC internal monitoring system divided into two systems. There is an AC power of 100 volts, which is an emergency power supply, drawn through the power switch 100 and input to the three AC / DC converters 102-1 to 102-3 to convert AC power to DC power, and is provided for each power system. The DC / DC conversion units 104-1 to 104-5 are input to be converted into DC voltage necessary for each system and output.

  When a failure occurs in the power supply unit having such a configuration, it is necessary to turn off the power supply switch 100 to replace the failed conversion unit, and when the power supply switch 100 is turned off, all the power supply systems stop and tunnel As the internal monitoring function is lost, it is necessary to take emergency measures such as standing and monitoring personnel in the guard aisle in the tunnel.

  Also, when spare parts are delivered and managed in order to cope with the failure of the power supply part, the spare parts will deteriorate over time if the operation period becomes long, and even if the failed converter part is replaced with the spare parts, it functions properly. If not, it is also assumed.

  For this reason, it is possible to establish redundancy by providing a main system and a spare system for the power supply section of the disaster prevention reception board, but the circuit scale is doubled compared to the conventional power supply section, and the installation space of the disaster prevention reception board is restricted. And cost problems.

  In addition, when the power supply unit is duplicated, when switching to the spare system due to a failure of the main system, there is a risk that the spare system may not operate normally due to aging, and in order to prevent this, the spare system is added to the main system. Periodic operation check is required, and there is a problem that maintenance and management of the spare system takes time and effort.

  The present invention enables quick temporary recovery for a failure of the power supply without increasing the circuit size of the power supply or requiring management as a spare system, and ensures that the monitoring function in the tunnel is lost. To provide a tunnel disaster prevention system that

(Power supply redundancy of disaster prevention reception board)
The present invention relates to 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.
In the power supply section of the disaster prevention reception board,
An AC / DC conversion unit which receives commercial AC power, converts it into DC power of a predetermined voltage, and outputs it;
A DC / DC conversion unit which receives DC power output from the AC / DC conversion unit, converts it into DC power of a predetermined voltage, and outputs the DC power to a load-side power supply line;
A first external connection terminal to which a first external power supply capable of setting a DC output voltage of the AC / DC conversion unit is detachably connected externally;
A second external connection terminal to which a second external power supply capable of setting a DC output voltage of the DC / DC conversion unit is detachably connected externally;
A first changeover switch for switching and connecting a first external connection terminal to which the first external power supply device is connected to an input of the DC / DC conversion unit when the AC / DC conversion unit breaks down;
A second changeover switch for switchingly connecting a second external connection terminal to which the second external power supply device is connected to the power line on the load side of the DC / DC conversion unit when the DC / DC conversion unit fails;
Is provided.

(Multiple power supply systems)
The AC / DC converter, the DC / DC converter, the first changeover switch, and the second changeover switch are provided for each of a plurality of power supply systems.

(Different power supply voltages for each power supply system)
The DC / DC converting unit provided for each of the plurality of power supply systems outputs DC power of different DC output voltage for each of the power supply systems,
The second external power supply apparatus can variably set a plurality of different DC output voltages for each power supply system.

(Manual switching)
The first changeover switch switches the first external connection terminal to the input of the DC / DC conversion unit by manual operation,
The second changeover switch switches and connects the second external connection terminal to the power supply line on the output side of the DC / DC conversion unit by manual operation.

(Automatic switching)
When stopping the output voltage of the AC / DC conversion unit and detecting the input voltage from the first external connection terminal, the first changeover switch switches the first external connection terminal to the input of the DC / DC conversion unit A first switching control unit for causing
When the output voltage of the DC / DC conversion unit is stopped and the input voltage from the second external connection terminal is detected, the second changeover switch is used to power the output side of the DC / DC conversion unit with the second external connection terminal. A second switching control unit for switching connection to the line;
Is provided.

(Connector connection)
The AC / DC conversion unit and the DC / DC conversion unit are detachably provided by connector connection.

(Effect of dual power supply for disaster prevention reception board)
The present invention relates to a tunnel disaster prevention system in which a terminal equipment installed in a tunnel is connected to a line drawn from a disaster prevention reception board, and a signal from the terminal equipment is received and controlled. AC / DC converter for inputting commercial AC power, converting it into DC power of a predetermined voltage and outputting it, and DC power output from the AC / DC converter, converting it into DC power of a predetermined voltage and loading it A first external connection terminal to which a first external power supply device capable of setting a DC output voltage of the AC / DC conversion unit is detachably connected externally; The second external connection terminal to which the second external power supply capable of setting the DC output voltage of the DC conversion unit is detachably connected externally, and the first external power supply when the AC / DC conversion unit breaks down Connected first external connection terminal DC / DC conversion of the first switch connected to the input of the DC / DC conversion unit and the second external connection terminal to which the second external power supply device is connected when the DC / DC conversion unit fails For example, when the AC / DC conversion unit fails, the first external power supply device is removed from the first external connection terminal because the second changeover switch connected to the power supply line on the load side of the unit is provided. By switching the first changeover switch to the first external connection terminal side in the attached state, the externally supplied first external power supply device supplies power from the failed AC / DC conversion unit to the DC / DC conversion unit. The power supply is temporarily restored in response to the failure of the AC / DC converter, the loss of the monitoring function in the tunnel by the power system due to the failed AC / DC converter is minimized, and the power supply is substantially reduced. two It can be of.

  Also, if the DC / DC conversion unit fails, the second changeover switch can be switched to the second external connection terminal while the second external power supply is externally connected to the second external connection terminal. The power supply to the power line on the load side of the broken DC / DC conversion unit is backed up from the externally connected second external power supply unit, and the power supply is temporarily restored to the failure of the DC / DC conversion unit, and the failure occurs. It is possible to minimize the loss of the monitoring function in the tunnel by the power supply system by the DC / DC conversion unit, and to substantially duplicate the power supply unit.

  In addition, since the first and second external power supplies can be set and change the output voltage by an external operation, it is necessary to prepare only one external power supply in the event of failure of the AC / DC conversion unit. It can be externally attached as an external power supply device 1 and can be externally attached and used as a second external power supply device at the time of failure of the DC / DC converter.

  In addition, the first and second external power supply devices may be constantly connected to each of the first and second external connection terminals. In this case, failure of the AC / DC conversion unit or the DC / DC conversion unit On the other hand, the power supply can be temporarily restored more rapidly by performing the switch switching.

(Effects of multiple power supply systems)
Further, the AC / DC conversion unit, the DC / DC conversion unit, the first changeover switch and the second changeover switch are provided for each of a plurality of power supply systems, and a plurality of first external connection terminals and second external connection terminals are provided. Common to the power supply system, it is possible to back up the system by preparing only one first and second external power supply device for multiple AC / DC conversion units and DC / DC conversion units. The cost of the circuit can be reduced by greatly reducing the circuit size required for duplexing of parts.

  Also, since the first or second external power supply device is externally attached to the first or second external connection terminal when the power supply unit fails, the first or second external power supply can be installed in the panel of the disaster prevention receiving board. There is no need to secure installation space for the device.

(Effect of different power supply voltage for each power supply system)
Further, the DC / DC converting unit provided for each of the plurality of power supply systems outputs DC power of a DC output voltage different for each power supply system, and the second external power supply device has a plurality of DC outputs different for each power supply system Since the voltage can be variably set, it is not necessary to prepare the second external power supply for each of a plurality of power supply systems having different power supply voltages, and the power supply can be changed by changing the output voltage of one second external power supply. Enables backup for multiple power supply systems with different voltages.

(Effect of manual switching)
In addition, the first changeover switch switches the first external connection terminal to the input of the DC / DC conversion unit by manual operation, and the second changeover switch manually connects the second external connection terminal to DC / DC. Since the power supply line on the output side of the DC conversion unit is switched and connected, the first changeover switch is manually switched at the time of failure of the AC / DC conversion unit, and the second switching is performed at the failure of the DC / DC conversion unit. By switching the switch by manual operation, it is possible to easily perform temporary restoration by backup of the failed power supply system.

(Effect by automatic switching)
When the output voltage of the AC / DC conversion unit is stopped and the input voltage from the first external connection terminal is detected, the first external connection terminal is input to the DC / DC conversion unit by the first changeover switch. The second external connection terminal is detected by the second changeover switch when the first switching control unit for switching connection, the stop of the output voltage of the DC / DC conversion unit, and the input voltage from the second external connection terminal are detected. And a second switching control unit for switching and connecting to the power supply line on the output side of the DC / DC conversion unit, so, for example, when the AC / DC conversion unit breaks down, the first external connection terminal When the external power supply device is externally connected, the first switching control unit detects the stop of the output voltage of the AC / DC conversion unit and the input voltage from the first external connection terminal, and automatically switches the first switching switch to Quickly switch over the faulty power system It can be up to provisional recovery.

  Further, in the case where the first external power supply device is externally attached to the first external connection terminal in advance, the first switching control unit automatically performs the first switching switch when the AC / DC conversion unit fails. It is possible to make a temporary restoration by switching back up the failed power supply system with a momentary loss.

If the second external power supply is externally connected to the second external connection terminal when the DC / DC conversion unit fails, the second switching control unit stops the output voltage of the DC / DC conversion unit. It is possible to detect the input voltage from the second external connection terminal and automatically switch the second changeover switch, back up the failed power supply system with about a momentary loss, and quickly restore it temporarily.
The failed power supply system can be backed up for quick recovery.

  In addition, when the second external power supply device is externally attached to the second external connection terminal in advance, the second switching control visual unit automatically performs the second switching switch when the DC / DC conversion unit fails. The power supply of the failed power supply system can be quickly backed up and temporarily restored.

(Effect by connector connection)
Further, since the AC / DC conversion unit and the DC / DC conversion unit are detachably provided by connector connection, the AC / DC conversion unit or the DC / DC conversion unit breaks down and the first external power supply device or the second external power supply device The replacement repair can be performed by the simple operation of removing the connector from the broken product and fitting it in a spare part while temporarily repairing the broken power supply system by externally attaching the external power unit.

An explanatory diagram showing the outline of the tunnel disaster prevention system Block diagram showing the board configuration of the disaster prevention reception board with terminal line connection A circuit block diagram showing an embodiment of a dual power supply unit provided in a disaster prevention receiving board A circuit block diagram showing another embodiment of a dual power supply unit provided in a disaster prevention receiving board Circuit block diagram showing a conventional power supply unit provided in a disaster prevention receiving board

[Overview of tunnel disaster prevention system]
FIG. 1 is an explanatory view showing an outline of a tunnel disaster prevention system, taking a P-type direct transfer system as an example. As shown in FIG. 1, an upstream tunnel 1 a and a downstream tunnel 1 b are constructed as tunnels of a motorway, and the upstream tunnel 1 a and the downstream tunnel 1 b are connected by an evacuation communication tunnel 2.

  Inside the upstream tunnel 1a and the downstream tunnel 1b, a fire detector 16 functioning as a terminal device is installed at intervals of, for example, 50 meters along the wall surface in the longitudinal direction of the tunnel. The fire detector 16 sets monitoring areas on both sides of 50 meters on both sides, detects a flame caused by a fire, issues a fire notification, and outputs a fire detection signal.

  In addition, fire extinguisher devices 18 and automatic valve devices 23 are installed at intervals of, for example, 50 meters along the wall surface of the supervisor passage in the longitudinal direction of the tunnel inside the upstream tunnel 1a and the downstream tunnel 1b. The fire hydrant device 18 is provided with a manual notification device 20 functioning as a terminal device and a fire hydrant switch 22.

  The fire hydrant device 18 has a hose with a nozzle housed in the fire hydrant door, and in the event of a fire, the fire hydrant door is opened and the hose with nozzle is pulled out, and when the fire hydrant valve opening / closing lever is opened, fire extinguishing water is released. The switch turns on and outputs a pump start signal to start the extinguishing pump.

  Moreover, the fire hydrant device 18 is provided with a fire extinguisher door, and the fire extinguisher is housed therein. In addition, the fire hydrant device 18 is provided with a water tap used by the fire brigade, and in accordance with this, a pump start switch is provided which outputs a pump start signal when a fire serviceman operates. The fire hydrant valve open / close detection switch and the pump start switch are connected in parallel, and this functions as the fire hydrant switch 22 shown.

  Furthermore, 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 that functions as a transmitter. When the manual notification device 20 is operated, a fire notification signal is output to the disaster prevention receiving board 10, and the response lamp is turned on by the response signal from the disaster prevention receiving board 10.

  Also, inside the upstream tunnel 1a and the downstream tunnel 1b, the automatic valve device 23 of the water spray facility is installed at intervals of 50 meters along the wall surface of the monitoring staff passage in the longitudinal direction of the tunnel. In 23, the main valve is driven to open by remote opening control of the actuating motor valve, and fire water is discharged from a plurality of water spray heads installed in the longitudinal direction of the upper part of the tunnel wall to protect the tunnel chassis from fire. The automatic valve device 23 of the water spray equipment is provided with a water spray switch 24 as a terminal device for detecting the start of water spray from the water spray head. The water spray switch 24 uses a pressure switch that detects and turns on the water discharge pressure due to the opening operation of the automatic valve.

  In order to monitor the abnormality in the tunnel by connecting the terminal equipment such as fire detector 16, manual notification device 20, fire hydrant switch 22 and water spray switch 24 installed in the tunnel, disaster prevention reception panel 10 in the monitoring center etc. Is installed.

  P-type signal line groups 11 and 12 are drawn out from the disaster prevention reception panel 10 into the upstream tunnel 1a and the downstream tunnel 1b, and the fire detector 16, the manual notification device 20 and the fire hydrant switch installed in the tunnel 22 and a water spray switch 24 are connected.

  In the present embodiment, the inside of the tunnel is divided into predetermined lengths, for example, two groups, for example, 800 meters, as one section, and signal lines extracted individually to the fire detectors 16 of each group are connected. For the other manual notification devices 20, the fire hydrant switch 22 and the water spray switch 24, one section of 800 meters is divided into block sections of 200 meters, for example, and connected to the signal line drawn out in glock section units. In the following description, the tunnel length is divided into two sections with 1600 meters as an example.

  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 hydrant switch 22 and the water spray switch 24 flow the 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 receiving board 10.

  A power line is drawn out from the disaster prevention reception panel 10 to terminal devices such as the fire detector 16, the manual notification device 20, the fire hydrant switch 22 and the water spray switch 24 installed in the tunnel, for example, DC48V supplied It is done.

  As emergency facilities for tunnel, in addition to this, 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 etc. Except for the point where the IG slave station equipment 38 is connected by the data transmission line, the other equipment is individually connected to the disaster prevention receiving board 10 by the P-type signal line group 14.

  Here, the IG slave station equipment 38 is a communication equipment connecting the disaster prevention receiving board 10 and the distant 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 velocity by the operation of a jet fan installed on the ceiling side in the tunnel to cause the flow of ventilation in the longitudinal direction of the tunnel.

  Moreover, the alarm display board installation 30 is an installation which displays and notifies occurrence of a fire in a tunnel, water spray start, etc. on an electric light display board to the user in a tunnel. The radio rebroadcasting facility 32 is a facility for enabling a driver or the like to receive information from a road manager in a tunnel. The TV monitoring facility 34 is a facility for checking the scale and position of the fire, and operating the water spray facility and grasping the condition in the tunnel when performing evacuation guidance. The lighting equipment 36 is equipment that drives and manages lighting equipment in the tunnel.

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

  The control CPU board 48 and the control CPU spare board 50 function as a duplexed main control unit, and when a fire detection signal from the fire detector 16 or a fire notification signal from the manual notification device 20 is received, predetermined fire alarm control When the pump start signal from the fire hydrant switch 22 is received, the start control of the fire extinguishing pump facility 25 is performed, and further, when the water spray start signal from the water spray switch 24 is received, Control such as warning display of tunnel intrusion prohibition accompanying the start of spraying is performed.

  The section rack 52 is provided with a section CPU board 54 and a section CPU spare board 56, and the section CPU boards are also duplicated. In addition, the division racks 52 are provided with division substrates 60-1 and 60-2 corresponding to the terminal devices of two sections of 800 meters of the upstream tunnel 1a, and two sections of 800 meters of the downstream tunnel 1b. Two partition substrates 60-3 and 60-4 are provided corresponding to the terminal devices of the above, and the terminal devices installed in the upstream tunnel 1a are provided on the partition substrates 60-1 and 60-2 by the signal line group 11. Terminal devices installed in the down tunnel 1 b are connected to the partition boards 60-3 and 60-4 by the signal line group 12. Further, the compartment rack 52 is provided with a P-type output board 62.

  The section CPU board 54 and the section CPU spare board 56 function as a dual section control section, and when a line signal from a terminal device installed in a tunnel is received, the type of the line signal and the line specifying the received signal line The number is sent to the main control unit duplicated by the control CPU board 48 and the control CPU spare board 50 to perform predetermined control.

  The duplexed partitioned CPU board 54 and the partitioned CPU spare board 56 are connected to the duplexed control CPU board 48 and the controlled CPU spare board 50 via serial transmission lines 58 and 59 such as duplexed RS-485. .

  Further, the divided CPU board 54 and the divided CPU spare board 56 are connected to the divided boards 60-1 to 60-4 and the P-type output board 62 through signal lines. The P-type output board 62 is connected to the external fire extinguishing pump equipment 25, the ventilation equipment 28, the alarm display board equipment 30, the radio rebroadcasting equipment 32, the TV monitoring equipment 34 and the lighting equipment 36 shown in FIG.

  From the division substrate 62-1 to the fire detector 16, the manual notification device 20, the fire hydrant switch 22 and the water spray switch 24 of the group G1 installed in the 0 to 800 meter section of the upstream tunnel 1a 80-1, 82-1, 84-1, 86-1 are drawn out, fire detector 16 is connected in line units, manual notification device 20, fire hydrant switch 22 and water spray switch 24 are connected in block units It is done.

  From the division substrate 62-1 to the fire detector 16, the manual notification device 20, the fire hydrant switch 22 and the water spray switch 24 of the group G2 installed in the 800 to 1600 meter section of the upstream tunnel 1a 80-2, 82-2, 84-2, 86-2 are drawn out, fire detector 16 is connected in line units, and manual notification device 20, fire hydrant switch 22 and water spray switch 24 are connected in block units It is done.

  Here, since the fire detector 16 is divided into 16 units in a section of 800 meters and the other terminal devices in 800 meters into 4 blocks of 200 meters, the signal line groups 80-1 and 80-2 are respectively The 16 lines, the signal line groups 82-1 to 86-2 are 4 lines each, and the signal line group 11 is a bundle of 56 lines.

  P-type signal line groups 80-3, 82-3, 84-3, 86-3 (56 lines in total) are drawn out from the line switching board 64-2 to the downstream tunnel 1 b, and the fire detector 16 is Are connected in line units, and the manual notification device 20, the fire hydrant switch 22 and the water spray switch 24 are connected in block units.

  In addition, although the detector test board which sends a test signal by the test signal circuit | line which becomes a crossover wiring with respect to the fire detector 16 is provided in the division rack 52, illustration is abbreviate | omitted.

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

  Furthermore, the disaster prevention receiving board 10 is provided with a power supply rack 76 and a power supply monitoring rack 78. The power supply rack 76 is provided with a power supply unit to be clarified in the following description, and inputs AC power from the emergency power supply AC 100 V, converts it into DC power of a predetermined voltage different for each system, and outputs it to the power supply line of each system doing.

  In FIG. 2, a power supply line 122 is drawn from the power supply rack 76 to the upstream tunnel 1a and the downstream tunnel 1b as an intra-tunnel monitoring system, and is bundled into P-type signal line groups 11 and 12, The direct current power of DC 48 V is supplied to the fire detector 16, the manual notification device 20, the fire hydrant switch 22 and the water spray switch 24 installed inside. The power supply rack 76 is divided into an in-panel processing system, an in-panel display system, and an out-of-panel mobile communication system in addition to the in-tunnel monitoring system, and supplies DC power of a predetermined voltage.

  Furthermore, the power supply unit provided in the power supply rack 76 is dualized, and in the event of a failure of the power supply unit, an external connector 112-for externally attaching the stabilized power supply devices 110-1 and 110-2 as shown by imaginary lines. An external AC power connector 114 is provided for supplying 100 V of the emergency power supply AC to 1, 112-2 and the stabilized power supply devices 110-1 and 110-2.

  The power supply monitoring rack 78 is provided with a power supply switching circuit, a voltage monitoring circuit, a storage battery circuit and the like, and monitoring control of the power supply section provided in the power supply rack 76 and red indicator light and response lamp provided in the fire hydrant device in the tunnel. The display control etc. of the

[Embodiment of disaster prevention receiver power supply section]
FIG. 3 is a circuit block diagram showing an embodiment of a dual power supply unit provided in the disaster prevention receiving board.

  As shown in FIG. 3, in the power supply unit of the present embodiment provided in the power supply rack 76, the AC / DC conversion unit 102 divided into three systems via the power supply switch 100, to which the emergency power supply AC 100 V is input as an AC power supply. -1, 102-2, 102-3.

  AC / DC conversion units 102-1, 102-2, 102-3 convert AC power of AC 100 V into DC power of a predetermined voltage and output it, and are provided with a power transformer, a rectifier circuit, and a smoothing circuit. The power supply circuit is used, for example, to output DC power of 24 V DC. Further, the power source capacities of the AC / DC converting units 102-1, 102-2, 102-3 are set corresponding to the maximum power required for the power source system connected to the secondary side.

  Following the AC / DC conversion units 102-1 to 102-3, they are divided into five systems, and DC / DC conversion units 104-1 to 104-5 are provided. The output of the AC / DC conversion unit 102-1 is connected to the input of the DC / DC conversion unit 104-1, but the output of the AC / DC conversion unit 102-2 is branched into two and the DC / DC conversion unit 104-2 , And 104-3, and similarly, the output of the AC / DC converter 102-3 is also branched into two and connected to the inputs of the DC / DC converters 104-4 and 104-5.

  The DC / DC conversion unit 104-1 converts DC 60 V DC input power into DC 5 V DC power required for the in-panel processing system, and outputs the DC power to the power supply line 122-1. The DC / DC conversion unit 104-2 converts DC 60 V DC input power into DC 12 V DC power required for the in-panel display system, and outputs the DC power to the power supply line 122-2.

  The DC / DC conversion unit 104-3 converts DC 60 V DC input power into 24 V DC DC power required for the off-board mobile communication system, and outputs the DC power to the power supply line 122-1. Furthermore, the DC / DC conversion units 104-4 and 104-5 convert the DC input power of DC 60 V into DC power of DC 48 V required for the in-tunnel monitoring system, and output them to the power supply lines 122-4 and 122-5, respectively. .

  As such DC / DC conversion units 104-1 to 104-5, switching power supply devices etc. using a non-stable converter that converts a predetermined DC input voltage into a predetermined DC output voltage according to a predetermined voltage conversion ratio It can be used.

  In addition, the input and output of AC / DC conversion units 102-1 to 102-3 and DC / DC conversion units 104-1 to 104-5 are detachably connected to the power supply line by connector 120, and a failure occurred. The replacement operation with the spare parts of the case is made easy and easy.

(Duplexing of AC / DC converter)
The configuration of such a power supply unit is the same as that of the conventional example shown in FIG. 5, but in the present embodiment, in order to double the power supply unit, an AC for DC / DC conversion units 104-1 to 104-5 is provided. The manual changeover switches 106-1 to 106-5 functioning as the first changeover switch are provided on the power supply lines from the / DC conversion units 102-1 to 102-3.

  The manual changeover switches 106-1 to 106-5 have changeover terminals a and b and a common terminal c, and manually switch the connection of the changeover terminals a and b with respect to the common terminal c according to the changeover section. Although the switching terminals a and b and the common terminal c are shown only for the manual switching switch 106-1, the remaining manual switching switches 106-2 to 106-5 are the same.

  The power supply line from the AC / DC conversion unit 102-1 is connected to the switching terminal a of the manual switching switch 106-1, and the AC / DC converting unit 102 is connected to the switching terminals a of the manual switching switches 106-2 and 106-3. The branched power supply line from point -2 is connected, and the branched power supply line from the AC / DC conversion unit 102-3 is connected to the switching terminal a of the manual changeover switches 106-4 and 106-5.

  The power supply rack 76 is provided with an external connector 112-1 functioning as a first external connection terminal, and any one of the AC / DC conversion units 102-1 to 102-3 fails in the external connector 112-1 In order to temporarily restore the power supply, the stabilized power supply 110-1 functioning as the first external power supply is externally connected by the insertion of the output plug 116 and is connected instead, and a predetermined AC / DC converter is replaced instead. Supply DC power of voltage.

  Further, in the vicinity of the external connector 112-1 of the compartment rack 78, an external AC power connector 114 to which the emergency power AC 100V is supplied via the power switch 100 is provided. By connecting the power supply plug 118, the stabilized power supply 110-1 can be operated.

  As the stabilized power supply device 110-1, a switching power supply device or the like using a commercially available stable converter capable of variably setting the output voltage by the setting operation can be used.

  Here, since the output of the AC / DC conversion unit 102-2 is branched into two systems and commonly input to the DC / DC conversion units 104-2 and 104-3, the manual switching switches 106-2 and 106 are used. The symbol -3 is a linked switch. The manual changeover switches 106-4 and 106-5 provided in the branch line from the AC / DC conversion unit 102-3 are similarly interlocked switches.

(Correspondence to failure of AC / DC converter)
If, for example, the AC / DC conversion unit 102-1 fails during operation of the tunnel disaster prevention system, the output of the AC / DC conversion unit 102-1 is stopped, and thereby the output of the DC / DC conversion unit 104-1 Also, the power supply by the power supply line 122-1 serving as the in-panel processing system is stopped.

  Such a failure of the AC / DC conversion unit 102-1 is detected by the power supply monitoring function of the power supply monitoring rack 78 shown in FIG. 2, and the power supply failure is identified and displayed on the display unit 72. The sound unit 68 outputs an alarm sound of a power failure. In this case, the power supply to the control rack 46 is also stopped because the power of the in-panel processing system is stopped, but the backup by the storage battery circuit of the power monitoring rack 78 is performed. Absent.

  Thus, when the failure of the AC / DC conversion unit 102-1 is notified, the person in charge carries out the prepared stabilized power supply 110-1 and inserts the power plug 116 into the external AC power connector 114 to operate. And then confirm that the output setting of the same output voltage DC60 V as that of the AC / DC conversion unit 102-1 which has failed in the setting of the output voltage of the regulated power supply 110-1 is made after the external connector 112. Insert the output plug 116 at -1.

  As a result, the DC power from the stabilized power supply device 110-1 is supplied to the switching terminals b of the manual changeover switches 106-1 to 106-5, and the person in charge is notified to the broken AC / DC converting unit 102-1. An operation is performed to switch the corresponding manual switching switch 106-1 from the switching terminal a to the switching terminal b.

  By the switching scan of the manual changeover switch 106-1, the DC power from the stabilized power supply 110-1 is supplied to the DC / DC converter 104-1, and the DC / DC converter 104-1 is supplied with the power supply line 122-1. The DC power supply of DC5V is supplied to this, temporary restoration of the in-panel processing system is performed, and the control function of the disaster prevention receiving board 10 is recovered.

  If temporary recovery is possible by backup of the stabilized power supply 110-1 attached in this way, the connector 120 of the failed AC / DC conversion unit 102-1 is removed and removed from the power supply rack 76. If the same spare part as the AC / DC conversion unit 102-1 is prepared, the connector 120 is connected to the spare part and arranged in the power supply rack 76.

  On the other hand, if the spare part of the failed AC / DC conversion unit 102-1 is not prepared, or if the replaced spare part did not operate normally even if it is replaced with the spare part, AC / DC The spare part of the conversion unit 102-1 is ordered from the manufacturer and waiting for delivery, and in this case, a certain period of time is required.

  However, even if it takes time to deliver spare parts, there is no problem in power supply by the externally attached stabilizing power supply 110-1, and it is possible to secure a sufficient margin time for spare parts preparation. Become. For this reason, it is not necessary to always store spare parts, and it becomes possible to take measures such as ordering spare parts in the event of failure.

  In addition, the response when the AC / DC conversion unit 102-1 fails is the same as when the AC / DC conversion units 102-2 and 102-3 fail, but the stabilizing power supply 110-1 is externally attached. The difference is that the interlocked manual switching switches 106-2 and 106-3 or the manual switching switches 106-4 and 106-5 are switched to the terminal b side in the above state.

(Duplexing of DC / DC converter)
As shown in FIG. 3, in the present embodiment, in addition to the duplexing of the AC / DC converting units 102-1 to 102-3, the DC / DC converting units 104-1 to 104-5 are duplexed. Manual changeover switches 108-1 to 108-5 functioning as a second changeover switch are provided on each of the power supply lines drawn from the outputs of the / DC converters 104-1 to 104-5.

  The manual changeover switches 108-1 to 108-5 are the same switches as the manual changeover switches 106-1 to 106-5, and the power supply line from the DC / DC conversion units 104-1 to 104-5 is connected to the changeover terminal a. The switching terminals b are connected in common and connected to an external connector 112-2 functioning as a second external connection terminal.

  Stabilized power supply device that functions as a second external power supply device to temporarily restore the power supply when any of the DC / DC conversion units 104-1 to 104-5 fails in the external connector 112-2. Reference numeral 110-2 is connected by the insertion of the output plug 116, and instead of the failed DC / DC conversion unit, DC power to be a predetermined DC voltage required for the failure system is supplied.

  Further, in the vicinity of the external connector 112-2 of the compartment rack 78, an external AC power connector 114 to which the emergency power AC 100 V is supplied via the power switch 100 is provided. By connecting the power supply plug 118, the stabilized power supply 110-2 can be operated.

  The stabilized power supply device 110-2 used for duplexing the DC / DC conversion units 104-1 to 104-5 includes the power supply lines 122-1 to 122-5 from the DC / DC conversion units 104-1 to 104-5. It is necessary to be able to variably set the output voltage of DC5V, DC12V, DC24V and DC48V to be supplied by using a switching power supply device etc. using a commercially available stable converter capable of variably setting the output voltage by setting operation. can do.

(Correspondence to failure of DC / DC converter)
If, for example, the DC / DC conversion unit 104-1 breaks down during operation of the tunnel disaster prevention system, the output of the DC / DC conversion unit 104-1 is stopped, and thereby the power supply line 122- serving as the in-panel processing system. The power supply by 1 is stopped, and the failure of the DC / DC conversion unit 104-1 is notified.

  In this case, the person in charge takes out the previously prepared stabilized power supply 110-2 and inserts the power plug 116 into the external AC power connector 114 to bring it into operation, and subsequently, the regulated power supply 110-2 has failed. After confirming that the output setting of the same output voltage DC5 V as the DC / DC conversion unit 104-1 is made, the output plug 116 is inserted into the external connector 112-2.

  As a result, the DC power from the stabilized power supply device 110-2 is supplied to the switching terminals b of the manual switching switches 108-1 to 108-5, and the person in charge is notified to the broken AC / DC converting unit 102-1. An operation is performed to switch the corresponding manual switching switch 108-1 from the switching terminal a to the switching terminal b.

  By the switching operation of the manual changeover switch 108-1, DC power from the stabilized power supply 110-2 is supplied to the power supply line 122-1, whereby temporary restoration of the power supply of the in-panel processing system is performed, and disaster prevention reception is performed. The control function of the board 10 is recovered.

  If temporary restoration by backup of the stabilized power supply 110-2 thus attached is completed, the connector 120 of the broken DC / DC conversion unit 104-1 is removed and removed from the power supply rack 76, and the broken DC / The connector 120 is connected to the same spare part as the DC conversion unit 104-1 and arranged in the power supply rack 76.

  Even when one of the DC / DC conversion units 104-2 to 102-5 fails, the output voltage of the externally attached stabilized power supply 110-2 is set to correspond to each failure system, except that This corresponds to the case where the DC / DC conversion unit 104-1 fails.

[Another embodiment of the disaster prevention receiver power supply unit]
FIG. 4 is a circuit block diagram showing another embodiment of a dualized power supply unit provided in the disaster prevention receiving board, characterized in that a failure of the power supply unit is detected and automatically switched to the backup state. I assume.

  As shown in FIG. 4, in the present embodiment, a switching control unit 130 (first switching control unit) is provided to monitor failures of the AC / DC conversion units 102-1 to 102-3. Further, a switching control unit 140 (second switching control unit) is provided to monitor failures of the DC / DC conversion units 104-1 to 104-5.

  Further, the manual changeover switches 106-1 to 106-5 shown in FIG. 3 are switch circuits 132-1 to 132-3 which can switch the terminals a and b by the switching control signal from the outside, among which AC / Since the output line of the DC conversion unit 102-2 is branched and input to the DC / DC conversion units 104-2 and 104-3, the switch circuit unit 132-2 has two circuits, and similarly, AC / DC. The switch circuit unit 132-3 provided in the branched output line of the conversion unit 102-3 is also configured as two circuits.

  Furthermore, the manual changeover switches 108-1 to 108-5 shown in FIG. 3 are switch circuits 142-1 to 142-5 which can switch the terminals a and b by a switching control signal from the outside.

  The switching control unit 130 receives the output voltage of the AC / DC converting units 102-1 to 102-3 and the output voltage of the stabilized power supply 110-1 externally attached to the external connector 112-1, AC / DC in which the output voltage is stopped when the stop of the output voltage of any of the DC / DC conversion units 102-1 to 102-3 is detected and the output voltage of the stabilized power supply 110-1 is detected A switching control signal is output to the switch circuit unit provided in the power supply line from the conversion unit, and control is performed to switch from the switching terminal a to the switching terminal b and temporarily restore.

  The switching control unit 140 receives the output voltages of the DC / DC converting units 104-1 to 104-5 and the output voltage of the stabilized power supply 110-2 externally connected to the external connector 112-2, and DC / DC in which the output voltage is stopped when the stop of the output voltage of any of the DC / DC conversion units 104-1 to 104-5 is detected and the output voltage of the stabilized power supply 110-2 is detected A switching control signal is output to the switch circuit unit provided in the power supply line from the conversion unit, and control is performed to switch from the switching terminal a to the switching terminal b and temporarily restore.

  As described above, in order to perform control for detecting a failure by the voltage monitoring of the switching control units 130 and 140 and for performing a temporary recovery automatically, the external power supply device 100-1 for the external connectors 112-1 and 112-2 It is desirable to always attach 100-2 externally.

  In addition, when any failure of the AC / DC conversion units 102-1 to 102-3 is notified, switching is performed when external power supply 110-1 is externally attached to external connector 112-1 and DC power is supplied. The control unit 130 can detect the output voltage of the stabilized power supply device 110-1, switch the switch circuit unit corresponding to the failure point, and automatically perform temporary restoration.

  Similarly, when any failure of the DC / DC conversion units 104-1 to 104-5 is notified, the stabilized power supply 110-2 is externally attached to the external connector 112-2 to supply DC power. Then, the switching control unit 140 can detect the output voltage of the stabilized power supply device 110-2, switch the switch circuit unit corresponding to the failure point, and automatically perform temporary restoration.

[Modification of the present invention]
(R-type transmission method)
Although the above embodiment exemplifies the power supply unit of the disaster prevention receiving board in the P-type direct transmission tunnel disaster prevention system, a terminal device such as a fire detector whose address is set to the transmission line is connected, and the terminal device is controlled by transmission control. With regard to the power supply unit of the disaster prevention receiving board in the tunnel disaster prevention system of the R type transmission method that enables individual management to perform detection and control on a unit basis, the same power supply unit as the embodiment described above may be duplexed.

(External operation of external power supply)
In the above embodiment, although the power plug of the external power supply is connected to the external AC power connector provided in the power rack to supply DC power for temporary recovery, as the external AC power connector, A connector with a power switch may be used to start and stop the externally connected external power supply device by operating the power switch provided on the external AC power connector. Thus, if the power supply unit fails, the external power supply device may be activated and temporarily restored after external power supply device attachment is completed, and it is necessary to start and stop the externally attached external power supply device. It can be done easily according to.

(Terminal equipment)
Although the above embodiment takes a fire detector, a manual notification device, a fire hydrant switch, and a water spray switch as an example of the terminal device connected to the partition substrate by a signal line, the present invention is not limited thereto. The present invention can also be applied to the case where an operation of an appropriate terminal device to be operated, for example, a notification operation of an emergency telephone, an extraction of a fire extinguisher, or the like is connected to the partition substrate as the terminal device.

(Self-fire report receiver)
Although the above embodiment takes the disaster prevention reception panel of the tunnel disaster prevention system as an example, the present invention is not limited to this, and the monitoring function is surely prevented from being lost like, for example, a self-light report receiver etc. The configuration of the power supply unit according to the present invention can be applied to other systems that need to be supplied and power must be supplied to each system.

(Others)
Furthermore, the present invention includes appropriate modifications that do not impair the objects and advantages thereof, and is not limited by the numerical values shown in the above embodiment.

1a: Uplink tunnel 1b: Downlink tunnel 10: Disaster prevention reception board 11, 12, 14: Signal line group 16: Fire detector 18: Fire hydrant device 20: Manual notification device 22: Fire hydrant switch 23: Automatic valve device 24: Water Spray switch 25: fire extinguishing pump equipment 28: ventilation equipment 30: alarm display board equipment 32: radio rebroadcast 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 boards 60-1 to 60-4: section board 62: P type output board 64: operation display CPU board 66: Operation unit 68: Sound unit 70: Display control board 72: Display unit 74: Serial CPU board 76: Power supply rack 78: Power supply monitoring rack 80-1 6-4: Signal line group 100: Power switches 102-1 to 102-3: AC / DC converters 104-1 to 104-5: DC / DC converters 106-1 to 106-3, 108-1 to 108 -5: Manual changeover switch 110-1, 110-2: Stabilized power supply 112-1, 112-2: External connector 114: External AC power supply 116: Output plug 118: Power plug 120: Connectors 122-1-122 -5: power supply line 130, 140: switching control unit 132-1 to 132-3, 142-1 to 142-5: switch circuit unit

Claims (6)

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 signals from the terminal device are received and controlled in line units,
In the power supply section of the disaster prevention reception board,
An AC / DC conversion unit which receives commercial AC power, converts it into DC power of a predetermined voltage, and outputs it;
A DC / DC conversion unit that receives DC power output from the AC / DC conversion unit, converts the DC power into a DC power of a predetermined voltage, and outputs the DC power to a power supply line on a load side;
A first external power supply device capable of setting a DC output voltage of the AC / DC conversion unit (a first external connection terminal to which the external connection is detachably connected;
A second external power supply device capable of setting a DC output voltage of the DC / DC conversion unit (a second external connection terminal to which the external connection is detachably connected;
A first changeover switch for switching and connecting the first external connection terminal to which the first external power supply device is connected to the input of the DC / DC conversion unit when the AC / DC conversion unit breaks down;
A second switching connection of the second external connection terminal to which the second external power supply device is connected to the power line on the load side of the DC / DC conversion unit when the DC / DC conversion unit fails. , And
A tunnel disaster prevention system characterized in that
In the tunnel disaster prevention system according to claim 1,
A tunnel disaster prevention system, wherein the AC / DC converter, the DC / DC converter, the first changeover switch, and the second changeover switch are provided for each of a plurality of power supply systems.
In the tunnel disaster prevention system according to claim 2,
The DC / DC conversion unit provided for each of the plurality of power supply systems outputs DC power of a DC output voltage different for each of the power supply systems,
The tunnel disaster prevention system, wherein the second external power supply apparatus can variably set a plurality of different DC output voltages different for each of the power supply systems.
In the tunnel disaster prevention system according to claim 1,
The first changeover switch switches and connects the first external connection terminal to the input of the DC / DC conversion unit by manual operation,
The tunnel disaster prevention system, wherein the second changeover switch switches and connects the second external connection terminal to the power supply line on the output side of the DC / DC conversion unit by manual operation.
In the tunnel disaster prevention system according to claim 1, further,
When the stop of the output voltage of the AC / DC conversion unit and the input voltage from the first external connection terminal are detected, the first external connection terminal is set to the DC / DC conversion unit by the first changeover switch. A first switching control unit for switching connection to an input;
When the output voltage of the DC / DC conversion unit is stopped and the input voltage from the second external connection terminal is detected, the second external connection terminal is switched to the DC / DC conversion unit by the second changeover switch. A second switching control unit for switching connection to the power supply line on the output side of
A tunnel disaster prevention system characterized in that
In the tunnel disaster prevention system according to claim 1,
The tunnel disaster prevention system, wherein the AC / DC conversion unit and the DC / DC conversion unit are detachably provided by connector connection.

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