JP7615192B2 - Disaster Prevention System - Google Patents

Description

The present invention relates to a disaster prevention system that monitors abnormalities in a disaster prevention monitoring area by connecting disaster prevention terminal devices such as reporting devices and detectors installed in the disaster prevention monitoring area to a disaster prevention receiving panel.

Conventionally, emergency facilities have been installed in disaster prevention monitoring areas, such as tunnels on expressways, to protect people and vehicles from fires that may occur within the tunnel.

Such emergency facilities include fire detectors, manual reporting devices, and emergency telephones for monitoring and reporting fires, as well as fire hydrants for extinguishing fires and preventing the spread of fires, and water sprayers that spray water from water spray heads to protect the tunnel structure and inside the ducts from fires. A tunnel disaster prevention system is created by installing a disaster prevention receiving panel that monitors and controls the terminal equipment of these emergency facilities.

Tunnel disaster prevention systems, consisting of disaster prevention receiving panels and terminal devices, are broadly divided into R-type transmission methods and P-type direct transmission methods. The R-type transmission method connects terminal devices such as fire detectors with addresses set to the transmission line, enabling individual management with detection and control on a terminal device basis through transmission control. The P-type direct transmission method divides the terminal devices into designated partition units according to their type, connects multiple terminal devices belonging to the same partition to the signal lines drawn out for each partition, and performs detection and control on a signal line basis.

In a tunnel disaster prevention system using the P-type direct transmission method, the terminal devices such as the manual reporting device, fire hydrant activation device, and duct temperature detector are configured with a no-voltage a-contact switch as a signal output section in response to operation or detection, and the no-voltage a-contact switch is connected to a signal line drawn from the disaster prevention receiving panel. The no-voltage a-contact switch is normally off in the monitoring state, and is turned on by operation or detection to output a no-voltage contact signal.

Specifically, the line receiving unit installed in the disaster prevention receiving panel applies a power supply voltage to one side of the signal line via a pull-up resistor, and in the steady monitoring state with the no-voltage a-contact switch off, almost no consumption current flows through the signal line, and the power supply voltage between the signal lines as seen from the disaster prevention receiving panel is maintained at approximately the power supply voltage. When the no-voltage a-contact switch is on, current flows through the signal line, and the voltage between the signal lines as seen from the disaster prevention receiving panel drops to approximately zero volts, and the line receiving unit of the disaster prevention receiving panel detects an increase in the consumption current of the signal line or a drop in the voltage between the signal lines and outputs a reception signal to the control unit indicating the operation or detection of the terminal device.

For example, if a fire signal is received from a manual reporting device, the disaster prevention receiving panel performs control operations such as displaying a fire, controlling the lighting of the response lamp on the terminal, and displaying the manual reporting area, and also transmits a fire reporting signal to external equipment such as remote monitoring and control equipment, television monitoring equipment, variable road information board equipment, tunnel ventilation equipment, and lighting equipment, so that the specified response control can be performed.

In addition, if the fire hydrant start signal is from a fire hydrant start device, such as a fire hydrant valve open/close detection switch installed in the fire hydrant device, the disaster prevention receiving panel sends a pump start signal to the fire pump equipment to remotely start and operate the fire pump equipment.

JP 2002-246962 A Japanese Patent Application Publication No. 11-128381 Japanese Unexamined Patent Publication No. 50-010097 Korean Patent No. 10-1527371 JP 2002-063664 A

In such conventional P-type direct tunnel disaster prevention systems, deterioration over time of the signal lines (external cables) connecting the terminal devices leads to deterioration of insulation, causing a current greater than that expected in normal monitoring conditions to flow through the signal lines connecting the terminal devices. The disaster prevention receiving panel judges this to be a signal received due to the operation or detection of the terminal device and issues an alarm. It also frequently links up with other equipment such as remote monitoring and control equipment, television monitoring equipment, variable road information board equipment, tunnel ventilation equipment, and lighting equipment, and closes the tunnel to traffic.

To solve this problem, a current monitoring device is installed in a separate housing from the disaster prevention receiving panel, and the current flowing through the signal line connected to a terminal device equipped with a no-voltage a-contact switch is measured and recorded at regular intervals, for example once a day, and if the measured current falls outside a specified threshold range, an abnormality in the current value of the signal line is detected and an alarm is issued.

Meanwhile, conventional disaster prevention receiving panels have a graphic panel depicting a tunnel system diagram on the front of the panel. The tunnel system diagram on the graphic panel shows, for example, the fire hydrant devices installed along the length of the tunnel as an array of rectangular symbols, and also has a number of section indicator lights arranged separately for manual reporting devices and fire hydrant activation devices in accordance with the sections divided along the length of the tunnel.

When the disaster prevention receiving panel receives a fire signal from a manual reporting device installed in a fire hydrant device, for example, and outputs a fire alarm, it lights up a compartment indicator light with a compartment symbol corresponding to the signal line that received the fire signal, making it possible to identify the compartment where the manual report was made.

However, in conventional tunnel disaster prevention systems using the P-type direct transmission method, terminal devices are divided into predetermined sections according to their type, and multiple terminal devices belonging to the same section are connected to signal lines drawn out for each section, and detection and control are performed on a signal line basis. Therefore, even if the section in which a manual report was made can be determined by the illumination of the section indicator light, the fire hydrant device in which the manual report was made is unknown, and it is not possible to know this without visiting the site to check.

To solve this problem, it would be better to use the R-type transmission method, which allows the address of the terminal device to be known, rather than the P-type direct transmission method. However, this would not take advantage of the advantages of the P-type direct transmission method, which takes into account vehicle traffic volume and tunnel length. Therefore, it would be desirable to be able to identify and display operating terminal devices within a section in addition to displaying the section when using the P-type direct transmission method.

In addition, conventionally, the current monitoring device was installed in a separate housing from the disaster prevention receiving panel, which required transmission and processing functions to send fire information, fault information, etc. from the disaster prevention receiving panel to the current measuring device and store it together with the measurement history, which created the problem of complex equipment configuration and processing.

The present invention aims to provide a P-type direct transmission disaster prevention system that can identify an activated disaster prevention terminal device from among multiple disaster prevention terminal devices connected to a signal line.

(Disaster prevention system)
The present invention relates to
a disaster prevention monitoring area divided into predetermined sections, a plurality of predetermined disaster prevention terminal devices are connected to signal lines laid corresponding to the sections of the disaster prevention monitoring area, the predetermined disaster prevention terminal devices are arranged in each of the sections of the disaster prevention monitoring area, and output signals via the signal lines;
A monitoring control unit that receives a signal from the disaster prevention terminal device via a signal line and performs a predetermined control process according to the received signal;
A disaster prevention system comprising:
The monitoring control unit is characterized in that, when it receives a signal from a disaster prevention terminal device via a signal line, it displays the disaster prevention terminal device that output the signal in an area system diagram displayed on the display unit, which shows the arrangement of the disaster prevention terminal devices in the disaster prevention monitoring area, in a manner that makes the disaster prevention terminal device that output the signal distinguishable from other disaster prevention terminal devices, and also displays in a manner that makes the section to which the disaster prevention terminal device that output the signal belongs distinguishable.

(Identification of multiple types of disaster prevention terminal devices)
the predetermined disaster prevention terminal device is a plurality of types of disaster prevention terminal devices, each of the plurality of types of disaster prevention terminal devices being provided in the same device and arranged in each of the sections of the disaster prevention monitoring area;
The area system diagram is
An equipment location section showing the location of equipment in which the protection terminal equipment is installed;
a disaster prevention terminal device location section which is provided for each type of protection terminal device and indicates a section in which the disaster prevention terminal device is located;
Equipped with
The monitoring control unit displays the device in which the disaster prevention terminal device that output the signal is installed in the device placement section of the area system diagram so that it is distinguishable from other devices , and displays the section to which the disaster prevention terminal device that output the signal belongs in the disaster prevention terminal device placement section corresponding to the disaster prevention terminal device that output the signal in the area system diagram so that it is distinguishable from other sections , thereby displaying the disaster prevention terminal device that output the signal so that it is distinguishable from other disaster prevention terminal devices and displaying the section to which the disaster prevention terminal device that output the signal belongs so that it is distinguishable .

(Basic Effects)
The present invention is a disaster prevention system comprising: predetermined disaster prevention terminal devices which are connected to signal lines laid corresponding to the sections of a disaster prevention monitoring area which is divided into predetermined sections, are placed in each of the sections of the disaster prevention monitoring area, and output signals via the signal lines; and a monitoring control unit which receives signals from the disaster prevention terminal devices via the signal lines and performs predetermined control processing according to the received signals.When the monitoring control unit receives a signal from a disaster prevention terminal device via the signal line, the monitoring control unit displays the disaster prevention terminal device which output the signal in a distinguishable manner from the other disaster prevention terminal devices on an area system diagram which is displayed on a display unit and shows the arrangement of the disaster prevention terminal devices in the disaster prevention monitoring area, and also displays in a distinguishable manner the section to which the disaster prevention terminal device which output the signal belongs, so that the disaster prevention terminal device which output the signal can be simply and easily identified along with the section in which it is located.

(Effect of identifying and displaying multiple types of disaster prevention terminal devices)
In addition, the specified disaster prevention terminal device is a plurality of types of disaster prevention terminal devices, each of which is provided in the same device and arranged in each of the sections of the disaster prevention monitoring area, and the area system diagram includes an device location section showing the location of the device in which the protective terminal device is provided, and a disaster prevention terminal device location section which is provided separately for each type of protective terminal device and shows the section in which the disaster prevention terminal device is arranged, and the monitoring control section displays the device in which the disaster prevention terminal device that output a signal is provided in the device location section of the area system diagram so as to be distinguishable from other devices , and displays the section to which the disaster prevention terminal device that output a signal belongs in the disaster prevention terminal device location section corresponding to the disaster prevention terminal device that output the signal in the area system diagram so as to be distinguishable from other sections , thereby displaying the disaster prevention terminal device that output the signal so as to be distinguishable from other disaster prevention terminal devices and displaying the section to which the disaster prevention terminal device that output the signal belongs so as to be distinguishable , so that even when there are a plurality of types of disaster prevention terminal devices, the display manner can be simplified while still allowing simple and easy identification.

An explanatory diagram showing the overview of the tunnel disaster prevention system An explanatory diagram showing the appearance of the disaster prevention receiving panel An explanatory diagram showing the monitor device when the panel door of the disaster prevention receiving panel is opened. FIG. 3 is an explanatory diagram showing the graphic panel of FIG. 2 ; Block diagram showing the outline of the functional configuration of the tunnel disaster prevention system Circuit block diagram showing the circuit configuration of a manual reporting device connected to a signal line FIG. 7 is an explanatory diagram showing the setting of a threshold value for identifying the current in the signal line that flows when the manual notification device of FIG. 6 is switched on. An explanatory diagram showing the relationship between fire hydrant numbers, compartments, and fire hydrant device identification codes within the compartments FIG. 13 is an explanatory diagram showing a measurement record screen of a monitor device displaying a measurement history based on periodic measurements. FIG. 13 is an explanatory diagram showing a measurement record filtering screen of a monitor device on which measurement histories extracted by setting filtering conditions are displayed. Flowchart showing disaster prevention monitoring control using a disaster prevention receiving panel FIG. 13 is an explanatory diagram showing another embodiment of the disaster prevention receiving panel.

[Outline of tunnel disaster prevention system]
The tunnel disaster prevention system is explained in detail in Fig. 1. As shown in Fig. 1, an up line tunnel 1a and an down line tunnel 1b are constructed as tunnels for a motorway. The up line tunnel 1a and the down line tunnel 1b are connected by an evacuation tunnel 2.

Inside the up-bound tunnel 1a and the down-bound tunnel 1b, fire hydrant devices 18 are installed along the walls of the guard passages in the longitudinal direction of the tunnels, for example at intervals of 50 meters.

The fire hydrant device 18 has a hose with a nozzle stored inside the hydrant door. In the event of a fire, the hydrant door is opened to pull out the hose with the nozzle, and when the fire hydrant valve opening/closing lever is opened, water for extinguishing the fire is discharged. In addition, the fire hydrant valve opening/closing detection switch 14 is turned on, and a fire hydrant start signal is output to the disaster prevention receiving panel 10 to start the fire pump.

The fire hydrant device 18 is also provided with a reporting device door, and the reporting device door is provided with a manual reporting device (transmitter) 16. In this way, the fire hydrant device 18 is provided with a fire hydrant valve opening/closing detection switch 14 and a manual reporting device 16 as terminal devices, and a fire hydrant start signal and a fire reporting signal (fire signal) are output when the non-voltage a-contact switches, which function as contact means, are turned on.

The fire hydrant device 18 is equipped with a pump start switch used by the fire brigade, but because it is the same switch in terms of the system that outputs the same fire hydrant start signal as the fire hydrant valve opening/closing detection switch 14, it will be described below as the fire hydrant valve opening/closing detection switch (including the pump start switch) 14. Also, the manual reporting device 16 is installed not only in the fire hydrant device 18 but also in emergency telephone booths, but in the following explanation, the manual reporting device installed in the fire hydrant device 18 will be used as a representative.

In addition to the fire hydrant device 18, the tunnel is also equipped with fire detectors, automatic valve devices, duct temperature detectors, etc. as emergency equipment, but these are not shown in the figure.

Fire detectors are installed along the tunnel walls in the longitudinal direction, for example at intervals of 25 or 50 meters, with monitoring areas set on both sides, 25 or 50 meters apart, and a fire alarm is sounded when flames caused by a fire are detected.

The automatic valve device constitutes a water spray system, and the main valve is opened by remotely controlling the opening of the operating motor valve, and fire-extinguishing water is sprayed from multiple water spray heads installed along the length of the upper part of the tunnel wall to protect the tunnel structure from fire.

The duct temperature detector is placed in a duct containing pipes and cables inside the guard passage along the length of the tunnel, and detects a rise in temperature inside the duct due to a cable fire, etc., and outputs a temperature detection signal by turning on a non-voltage a-contact switch that functions as a contact means.

A disaster prevention receiving panel 10 is installed in the monitoring center of the up-line tunnel 1a and the down-line tunnel 1b. In addition to the disaster prevention monitoring function of the up-line tunnel 1a and the down-line tunnel 1b, the disaster prevention receiving panel 10 is provided with a current monitoring function for monitoring the current of the P-type signal line to which the terminal equipment is connected.

From the disaster prevention receiving panel 10, P-type signal lines 12-11 to 12-16 and 12-21 to 12-26 are drawn out for each of the predetermined sections divided along the length of the tunnel into the up-bound tunnel 1a and the down-bound tunnel 1b, for example, into six sections. In this embodiment, four fire hydrant devices 18 form one section, and multiple fire hydrant valve opening/closing detection switches 14 and manual reporting devices 16 installed in each section are connected to the same signal line.

Note that, for the duct temperature detectors installed inside the ducts, P-type signal lines are similarly pulled out on a per-section basis, and multiple duct temperature detectors installed in each section are connected, but this is not shown. Also, signal lines 12-11 to 12-26 may be referred to as signal line 12 when there is no need to distinguish between them.

The P-type signal circuit 12 is composed of a signal line and a common line, and when the no-voltage a-contact switches provided on the fire hydrant valve opening/closing detection switch 14 of the fire hydrant device 18, the manual notification device 16, and the duct temperature detector are connected, the no-voltage a-contact switches are turned on by the respective operations or detection actions to allow line current to flow, thereby sending the fire hydrant start signal, fire notification signal (fire signal), and temperature detection signal to the disaster prevention receiving panel 10.

In addition to the fire hydrant equipment 18, fire detectors, and automatic valve equipment, the tunnel's emergency facilities include a fire pump equipment 20, duct cooling pump equipment 22, IG satellite station equipment 24, ventilation equipment 28, warning display board equipment 30, radio rebroadcast equipment 32, television monitoring equipment 34, and lighting equipment 36. Except for the IG satellite station equipment 24, which is connected by a data transmission line, all other equipment is individually connected to the disaster prevention receiving panel 10 by P-type signal lines. Here, the IG satellite station equipment 24 is a communication facility that connects the disaster prevention receiving panel 10 to the remote monitoring and control equipment 26, which is a higher-level facility installed externally, via a network 25.

The ventilation equipment 28 is a device that applies energy to the air inside the tunnel by operating a jet fan installed on the ceiling side of the tunnel to blow air at a high speed, creating an air flow in the longitudinal direction of the tunnel.

The warning display board equipment 30 is equipment that notifies users inside the tunnel of any abnormalities inside the tunnel by displaying them on an electronic display board. The radio rebroadcast equipment 32 is equipment that enables drivers and others inside the tunnel to receive information from the road administrator. The television monitoring equipment 34 is equipment that is used to confirm the scale and location of a fire, activate the water spray equipment, and grasp the situation inside the tunnel when providing evacuation guidance. The lighting equipment 36 is equipment that drives and manages the lighting equipment inside the tunnel.

[Disaster prevention receiving panel]
Fig. 2 is an explanatory diagram showing the appearance of the disaster prevention receiving panel, Fig. 2(A) shows the front and Fig. 2(B) shows the side. Fig. 3 is an explanatory diagram showing the state when the panel door of the disaster prevention receiving panel is opened and the monitor device is viewed.

(Front panel and monitor unit inside the case)
As shown in FIG. 2, the disaster prevention receiving panel 10 has a box-shaped housing 62 that is open at the front and rear, and a panel door 64 that can be opened and closed by operating a handle on the front side of the housing 62, and a back door 66 that can be opened and closed by a bundle operation on the back side of the housing 62.

On the front side of the panel door 64, there is a graphic panel 44 on which the section indicator lights and fire hydrant indicator lights are arranged on a tunnel system diagram, a display panel 55 on which multiple representative lights are arranged, and an operation panel 52 on which various operation switches and a telephone are arranged.

A monitor device 46 using a liquid crystal display with a touch panel is disposed inside the housing 62. As shown in FIG. 3, when the panel door 64 of the disaster prevention receiving panel 10 is opened, the monitor device 46 disposed on a support frame 68 inside the housing 62 appears, and the signal line current value measurement results and the measurement history of the current value including the judgment results can be displayed on the screen of the monitor device 46.

(Graphics Panel)
Fig. 4 is an explanatory diagram showing the graphic panel of Fig. 2. As shown in Fig. 4, a fire warning light 100 is provided at the top center of the graphic panel 44, and below that, following the tunnel name, an up line tunnel system diagram 102a and a down line tunnel system diagram 102b are drawn as tunnel system diagrams.

The up-bound tunnel system diagram 102a is divided into three sections: a fire hydrant arrangement section 104, a manual reporting device arrangement section 106, and a fire hydrant activation device arrangement section 108. In the fire hydrant arrangement section 104, fire hydrant indicator lights 110 are arranged as rectangular fire hydrant symbols indicating, for example, 22 fire hydrant devices arranged at 50-meter intervals along the length of the tunnel.

The manual reporting device placement section 106 is divided into six partition symbols corresponding to the P-type signal circuits, and each partition symbol is marked with a partition number "1 to 6" (corresponding to the circuit number), and each partition symbol is provided with a partition indicator light 112. The partition symbols in which the circuit indicator lights 112 are arranged are arranged corresponding to the four fire hydrant indicator lights 110, and the last partition symbol is arranged corresponding to the two fire hydrant indicator lights 110, numbered 21 and 22.

The fire extinguishing device placement section 108 is also divided into six section symbols corresponding to the P-type signal circuits, with each section symbol being marked with a section number "1 to 6" and each section symbol being provided with a circuit indicator light 114. The fire hydrant placement section 104, manual reporting device placement section 106, and fire hydrant activation device placement section 108 are the same for the outbound tunnel system diagram 102b.

The fire hydrant indicator light 110 and the circuit indicator lights 112, 114 provided on the graphic panel 44 are turned on when a fire or fire hydrant activation is determined by receiving a signal from the corresponding signal circuit.

[Configuration of the disaster prevention receiving panel]
(Outline of the disaster prevention receiving panel)
Fig. 5 is a block diagram showing an outline of the functional configuration of the tunnel disaster prevention system. As shown in Fig. 5, the disaster prevention receiving panel 10 includes a control unit 40, which is a function realized by, for example, executing a program, and uses, as hardware, a computer circuit or the like equipped with a CPU, memory, various input/output ports including an AD conversion port, and the like.

The control unit 40 is provided with a P-type transmission unit 42 that connects various terminal devices installed in the tunnel via P-type signal lines 12. The control unit 40 is also provided with a graphic panel 44, a monitor device 46, an alarm unit 48 equipped with a speaker, buzzer, alarm indicator lights, etc., a display panel 50 equipped with various indicator lights, and an operation panel 52 equipped with various switches. In addition, a P-type transmission unit 54 is provided that individually connects the IG child station equipment 24, ventilation equipment 28, alarm display board equipment 30, radio rebroadcast equipment 32, television monitoring equipment 34, lighting equipment 36, fire pump equipment 20, and cooling pump equipment 22 via P-type signal lines.

The P-type transmission unit 42 is provided with a line receiving unit 60 corresponding to the signal lines 12-11 to 12-16 and 12-21 to 12-26 drawn out to the uplink tunnel 1a, and the line receiving unit 60 is provided with a current detection unit 61 that detects the current flowing through the signal line.

The P-type transmission unit 42 is also provided with a line receiving unit 60 corresponding to the signal lines 12-11 to 12-16 and 12-21 to 12-26 drawn out to the downlink tunnel 1b, and the line receiving unit 60 is provided with a current detection unit 61 that detects the current flowing through the signal line.

(Configuration of manual reporting device)
FIG. 6 is a circuit block diagram showing the circuit configuration of a manual reporting device connected to a signal line.

As shown in FIG. 6, for example, signal line 12-21 drawn from line receiving section 60 of disaster prevention receiving panel 10 is connected to the switches of manual notification devices 16-1 to 16-4 provided in fire hydrant devices 18-1 to 18-4, and resistors RA, RB, RC, and RD with different resistance values are connected in series to the switches of manual notification devices 16-1 to 16-4.

In this embodiment, the relationship between RA, RB, RC, and RD is RA>RB>RC>RD.
The relationship between the currents is set as follows. When the manual reporting devices 16-1 to 16-4 are switched on, the currents flowing through the signal line 12-21 are IA, IB, IC, and ID.
IA<IB<IC<ID
The relationship between the

A termination resistor R0 is connected to the end of the signal line 12-21 to pass a disconnection monitoring current I0, and the resistance values are R0>RA>RB>RC>RD.
Therefore, the current value is I0<IA<IB<IC<ID
The relationship between the

Figure 7 is an explanatory diagram showing the setting of a threshold value for identifying the current flowing through the signal line when the manual notification device in Figure 6 is switched on.

As shown in FIG. 7, the currents flowing through the signal line 12-21 when the manual reporting devices 16-1 to 16-4 are switched on are IA, IB, IC, ID, and the disconnection monitoring current IO. If the current thresholds Ith1, Ith2, Ith3, Ith4, and Ith5 are set as shown, and the identification codes of the manual reporting devices 16-1 to 16-4 are A, B, C, and D, then by measuring the current value flowing through the signal line 12-21, it is possible to determine whether the manual reporting device 16-1 with identification code A has been switched on, whether the manual reporting device 16-12 with identification code B has been switched on, whether the manual reporting device 16-3 with identification code C has been switched on, and whether the manual reporting device 16-4 with identification code D has been switched on.

Figure 8 is an explanatory diagram showing the relationship between fire hydrant numbers, compartments, and the identification codes of fire hydrant devices within the compartments. For example, compartment number 1 corresponding to the first compartment is identified by receiving a fire notification signal from the manual notification device 16-1 connected to the signal line 12-21 in Figure 6, and identification code A is identified by measuring the current value IA flowing through the signal line 12-21 shown in Figure 7. With this combination of (compartment number 1, identification code A), it is possible to identify, from the relationship shown in Figure 8, that a fire notification operation has been performed on the fire hydrant device with fire hydrant number 1 out of the 22 fire hydrant devices 18 located within the tunnel.

The same applies to the other automatic notification devices 16 connected to the signal lines 12-12 to 12-26, and the fire hydrant valve open/close detection switches 14 connected to the signal lines 12-11 to 12-16.

Specifically, the memory provided in the control unit 40 of the disaster prevention receiving panel 10 stores table information that stores fire hydrant numbers using pairs of partition numbers and identification codes as indexes based on the relationship in Figure 8.

The control unit 40 has the functions of a monitoring control unit 56 and a current monitoring unit 58, which are functions realized by executing a program.

(Monitoring and control unit)
The monitoring control unit 56 performs predetermined monitoring and control based on detection signals and operation signals from terminal devices such as the fire hydrant valve opening/closing detection switch 14, manual reporting device 16, fire detector, duct temperature detector, and automatic valve device provided in the fire hydrant device 18 installed in the tunnel.

When the monitoring control unit 56 receives a fire notification signal (fire signal) via the line receiving unit 60, for example, by operating the manual notification device 16 provided in the fire hydrant device 18, it causes the alarm unit 48 to sound the main sound and also lights or blinks the fire representative light 100 on the graphic panel 44 shown in FIG. 4 to display the fire representative, lights the line indicator light 112 on the manual notification device placement unit 106 corresponding to the signal line that received the fire notification signal to display the manual notification section, and also transmits a response signal to the fire hydrant device 18 to light the response lamp.

Furthermore, when the monitoring control unit 56 receives a fire hydrant activation signal via the line receiving unit 60, which is generated by turning on the fire hydrant valve opening/closing detection switch 14 in response to the operation of the fire hydrant valve opening/closing lever provided on the fire hydrant device, following receipt of the fire notification signal, it turns on the line indicator light 114 of the fire hydrant activation device placement unit 108 corresponding to the signal line that received the fire hydrant activation signal on the graphic panel 44 shown in FIG. 4 to display the fire hydrant activation area, and further transmits a pump activation signal to the fire pump equipment 20 to activate the fire pump.

Furthermore, the monitoring control unit 56 performs controls over other equipment based on the reception of a fire notification signal, such as sending a fire notification signal to the remote monitoring and control equipment 26 via the IG slave station equipment 24 to issue an alarm, displaying the manual notification area using the television monitoring equipment 34, displaying a fire notification in the manual notification area using the alarm display board equipment 30, ventilating the manual notification area using the ventilation equipment 28, and lighting the manual notification area using the lighting equipment 36.

In addition, when the temperature inside the duct rises and a temperature detection signal is received from the duct temperature detector, the monitoring and control unit 56 outputs a pump start signal to the cooling pump equipment 22 and controls the spraying of water from a head installed inside the duct to cool the inside of the duct.

The monitoring and control unit 56 also monitors for disconnection faults in the signal line 12. When it detects a disconnection fault in the signal line to the manual reporting device 16, it causes the alarm unit 48 to sound an audible fault and turns on the manual reporting line disconnection lamp on the display panel 50 shown in FIG. 2, for example, in yellow. When it detects a disconnection fault in the signal line 12 to the fire hydrant valve open/close detection switch 14, it causes the alarm unit 48 to sound an audible fault and controls the fire hydrant line disconnection lamp on the display panel 50 shown in FIG. 5, for example, to turn on in yellow.

(Current monitoring unit)
The current monitoring unit 58 measures the current value of the signal line 12 to which a terminal device equipped with a non-voltage a-contact switch including the fire hydrant valve opening/closing detection switch 14 and the manual reporting device 16 is connected, and if the measured current value falls outside a threshold range determined by predetermined upper and lower limits, it determines that the current value is abnormal, and controls the storage of the measurement results as measurement history in a memory using a removable memory card.

The current monitoring unit 58 measures the current value of the signal line 12, for example, by reading the detection voltage of a current detection resistor inserted in the signal line 12 provided in the current detection unit 61 in Figure 5 after AD conversion, and then calculating the average current value measured over a specified period of time to eliminate the effects of noise.

Here, the current value measurement by the current monitoring unit 58 includes fixed-period measurement, automatic measurement, and manual measurement. Fixed-period measurement by the current monitoring unit 58 measures the current values of all signal lines 12 sequentially at a predetermined cycle, for example once a day, and determines that the current value is abnormal if the measured current value falls outside a predetermined threshold range, and controls the measurement results and determination results to be stored in memory as a measurement history.

When the automatic measurement operation by the monitor device 46 is detected, the current monitoring unit 58 measures the current values flowing through all signal lines 12 in sequence, and if the measured current value falls outside a predetermined threshold range, it determines that the current value is abnormal and controls the monitor device 46 to display the measurement result on its screen.

When the current monitoring unit 58 detects a manual measurement operation, including the selection of a signal line by the monitor device 46, it measures the current value flowing through the selected signal line, and if the measured current value falls outside a predetermined threshold range, it determines that the current value is abnormal and controls the monitor device 46 to display the measurement result on its screen.

In addition, when the current monitoring unit 58 detects an operation to display the measurement history by the monitor device 46, it controls the monitor device 46 to display the measurement history of the current value stored in the memory on the screen.

The current monitoring unit 58 controls the current monitoring device measurement lamp in the display panel 50 shown in FIG. 5 to light green during periodic, automatic, or manual measurement, and when a current value abnormality is determined by periodic, automatic, or manual measurement, controls the manual report current value abnormality lamp or fire hydrant current value abnormality lamp in the display panel 50 shown in FIG. 5 to light yellow to provide a representative display.

In addition, when the current monitoring unit 58 detects an operation to display the abnormality history by the monitor device 46, it extracts the measurement history in which the current value has been determined to be abnormal from the measurement history of the current value stored in the memory, and controls the monitor device 46 to display the measurement history in chronological order on the screen.

[Identification of activated terminal based on current measurement of signal line]
(Identification of manual reporting devices)
The monitoring control unit 56 provided in the control unit 40 of the disaster prevention receiving panel 10 in FIG. 5, when receiving a fire notification signal output by switching on the manual notification device 16-1 to 16-4 provided in any of the four fire hydrant devices 18-1 to 18-4 connected to the signal line 12-21 shown in FIG. 6, instructs the current monitoring unit 58 to measure the current value flowing through the signal line 12-21 from which the fire notification signal was received, and when it determines that the measured current value is within the range of the current threshold values Ith2 to Ith3 shown in FIG. 7, it determines that the fire notification signal is a fire notification signal generated by switching on the manual notification device 16-1 shown in FIG. 6 corresponding to the identification code A, and controls the fire hydrant indicator light 110 with the fire hydrant number 1 in the fire hydrant arrangement section 104 of the up-line tunnel system diagram 102a of the graphic panel 44 in FIG. 4 to light up or flash, thereby identifying and indicating that a fire notification operation has been performed on the fire hydrant device 18-1.

In this way, when the disaster prevention receiving panel 10 receives a fire notification signal, it can easily identify and display the fire hydrant device 18 equipped with the manual notification device 16 that output the fire notification signal by measuring the current value of the signal line 12 on which the fire notification signal was received, making it possible to identify the location within the tunnel where the fire notification was made and take appropriate action without having to go to the site.

(Effects of identifying fire hydrant starting devices)
The monitoring control unit 56 provided in the control unit 40 of the disaster prevention receiving panel 10 in FIG. 5, when receiving a fire hydrant start signal outputted by turning on the fire hydrant valve opening/closing detection switch 14 by opening the fire hydrant valve opening/closing lever provided in any of the four fire hydrant devices 18 connected to the signal line 12-11, instructs the current monitoring unit 58 to measure the current value flowing through the signal line 12-11 from which the fire hydrant start signal was received, and when it determines that the measured current value is within the range of the current thresholds Ith2 to Ith3 shown in FIG. 7, it determines that the fire hydrant start signal is the fire hydrant start signal generated by turning on the fire hydrant valve opening/closing detection switch 14 corresponding to the identification code A, and controls the fire hydrant indicator light 110 with the fire hydrant number 1 in the fire hydrant arrangement unit 104 in the up-line tunnel system diagram 102a of the graphic panel 44 in FIG. 4 to light up or flash, thereby identifying and indicating that a fire hydrant start operation has been performed in the fire hydrant device 18-1.

When the disaster prevention receiving panel 10 receives a fire hydrant activation signal, it can easily identify and display the fire hydrant device 18 equipped with the fire hydrant valve opening/closing detection switch 14 that output the fire hydrant activation signal by measuring the current value of the signal line 12 on which the fire hydrant activation signal was received. This makes it possible to know which fire hydrant device 18 is being used for firefighting activities without going to the scene, and makes it possible to properly grasp the situation at the fire site inside the tunnel.

(Display of measurement record screen on monitor device)
FIG. 9 is an explanatory diagram showing a measurement record screen of a monitor device which displays a measurement history based on periodic measurements.

As shown in FIG. 9, an automatic measurement selection button 73, a manual measurement selection button 74, a measurement record selection button 75, an abnormality history selection button 76, and a line selection button 77 are arranged at the bottom of the monitor screen 70, and as shown by the hatching, when the measurement record selection button 75 is operated, the measurement record screen 72 shown in the figure is displayed.

On the right side of the measurement record screen 72 are a page display 78, page switching buttons 79 and 80, a file save button 81, and a memory removal button 82.

The page switching buttons 79 and 80 can be used to switch pages of the detailed measurement history information 83. The file save button 81 instructs the measurement results to be stored in memory. The memory removal button 82 is operated when removing the memory that stores the current measurement information from the disaster prevention receiving panel 10.

The detailed measurement history information 83 displayed in the center of the measurement record screen 72 displays information for each signal line in a list, divided into the line number indicated by "No", date and time, item, upper and lower limits, measurement value, and judgment. Here, for line number 004, the measurement value is 1.25 mA, which exceeds the upper limit of 1.00 mA, and is therefore judged to be an abnormal current value, with the display showing "NG." Measurement values for other line numbers are within the range between the upper and lower limits, and are therefore judged to be normal, with the display showing "OK."

The current monitoring unit 58 stores the measurement history of the current values measured at a measurement cycle of once a day, and by operating the measurement record selection button 75, the measurement history detailed information 83 is displayed on the screen based on the stored history information. However, even when the current value of the signal line that received the fire notification signal or fire hydrant activation signal is measured based on the instruction of the monitoring control unit 56, and the operated fire hydrant device is identified and displayed, the measured current value is also stored as the measurement history.

Therefore, when the measurement record screen 72 is displayed as shown in Figure 9, the measurement history of the current values measured upon receiving a fire notification signal or a fire hydrant activation signal can also be viewed, making it possible to investigate the time of the fire outbreak, the time of the fire hydrant activation, etc.

(Display of narrowed down measurement history)
When the line selection button 77 arranged below the measurement record screen 72 in FIG. 9 is operated, the display is switched to a measurement record narrowing down screen 84 shown in FIG.

The measurement record filtering screen 84 in FIG. 10 includes a system selection section 85, a device selection section 86, a section selection section 87, a confirm button 88, a cancel button 89, a page display 90, page switching buttons 91 and 92, and a close button 93.

The system selection unit 85 selects between the upstream line and the downstream line. The device selection unit 86 selects between manual notification, fire hydrant, and duct. The section selection unit 87 inputs the section number.

On the measurement record narrowing screen 84, if you want to narrow down the measurement records to "section 01 on the manual reporting device of the up line," for example, set "up line" in the system selection section 85, "manual reporting" in the device selection section 86, and "01" in the section selection section 87 as shown in the figure, and then operate the confirm button 88, and the corresponding narrowed down measurement record 94 will be displayed.

In this state, pressing the release button 89 will clear the refinement conditions and refinement measurement record 94. Pressing the close button 93 will return to the measurement record screen 72 in Figure 9.

By using the functions of this measurement record filtering screen 84, it is possible to filter and display measurement records from the vast amount of stored measurement records by setting filtering conditions that combine systems, devices, and sections. For example, the current value measured upon receiving a fire notification signal or a fire hydrant activation signal can be displayed on the screen, making it possible to easily investigate the time of a fire outbreak, the time of a fire hydrant activation, etc.

In addition to system, equipment, and section, the period can also be selected as a filtering condition for measurement records.

[Disaster prevention monitoring and control]
FIG. 10 is a flow chart showing disaster prevention monitoring control by the disaster prevention receiving panel, which corresponds to the control operation of the monitoring control section 56 and the current monitoring section 58 provided in the disaster prevention receiving panel of FIG.

As shown in FIG. 10, when the current monitoring unit 58 determines in step S1 that the current measurement period of once a day has been reached, it proceeds to step S2, where it sequentially measures the current values of all signal lines to determine whether or not there is an abnormality in the current value, and performs current value measurement control to store the measurement results and the determination results in memory as a measurement history.

Then, in step S3, the monitoring control unit 56 monitors whether a fire notification signal has been received. If it determines that a fire notification signal has been received, it proceeds to step S4 to perform fire alarm control, and then in step S5, it identifies the compartment number for which the fire notification has been received from the signal line that received the fire notification signal.

Then, the monitoring control unit 56 proceeds to step S6, instructs the current monitoring unit 58 to measure the current value of the signal line that received the fire notification signal, and in step S7, identifies the fire hydrant number that is the source of the notification based on the measured current value.

Then, the monitoring control unit 56 proceeds to step S8, and turns on the line indicator light 112 and the fire hydrant indicator light 110 of the compartment where the fire report was received in the graphic panel 44 in FIG. 4, thereby displaying the compartment where the fire report was received and the fire hydrant device.

Then, in step S9, the monitoring control unit 56 monitors whether a fire hydrant activation signal has been received. If a fire hydrant activation signal has been received, the monitoring control unit 56 proceeds to step S10 to perform fire pump activation control, and then in step S11 identifies the compartment number where the fire hydrant was activated from the signal line that received the fire hydrant activation signal.

Then, the monitoring control unit 56 proceeds to step S12, instructs the current monitoring unit 58 to measure the current value of the signal line that received the fire hydrant activation signal, and in step S13, identifies the fire hydrant number that activated the signal based on the measured current value.

Then, the monitoring control unit 56 proceeds to step S14, and turns on the circuit indicator light 114 and the fire hydrant indicator light 110 of the section where the fire hydrant was activated in the graphic panel 44 in FIG. 4, thereby displaying the section where the fire hydrant was activated and the fire hydrant device.

Then, the monitoring control unit 56 proceeds to step S15 to determine whether the fire has been restored. If the fire in the tunnel has been extinguished and it is determined that the fire has been restored, the monitoring control unit 56 performs a predetermined restoration process in step S16, and then returns to step S1 to perform normal disaster prevention monitoring control.

[Disaster prevention receiving panel equipped with main monitor device]
FIG. 12 is an explanatory diagram showing another embodiment of the disaster prevention receiving panel, with FIG. 12(A) showing the front and FIG. 12(B) showing the side.

As shown in FIG. 12, the disaster prevention receiving panel 10 of this embodiment has a panel door 64 that is attached to the front of a box-shaped housing 62 that is open both front and rear and can be opened and closed by operating a handle. On the front side of the panel door 64, instead of the graphic panel 44 provided in the embodiment of FIG. 2, a second monitor device 96 using a liquid crystal display with a touch panel is installed, and an operation display unit 98 is located below that.

The screen of the second monitor device 96 displays an image corresponding to the tunnel system diagram shown in Figure 4, which is drawn on the graphic panel 44 of the disaster prevention receiving panel 10 in Figure 2, and further displays specified information related to tunnel disaster prevention monitoring.

Inside the housing 64, as in the embodiment of FIG. 2, a monitor device 46 using a liquid crystal display with a touch panel is placed, and the measurement history of the current values shown in FIG. 9 and FIG. 10 is read out and displayed.

The difference in the disaster prevention receiving panel 10 thus equipped with the second monitor device 96 is that the second monitor device 96 is provided instead of the graphic panel 44 shown in FIG. 5, but the rest of the configuration and control functions are the same.

When the disaster prevention receiving panel 10 equipped with the second monitor device 96 receives a fire notification signal or a fire hydrant activation signal, it changes or flickers the display color of the fire hydrant symbol in the tunnel system diagram displayed on the screen of the second monitor device 96, which indicates that a fire notification operation or a fire hydrant activation operation has been determined, and it also changes or flickers the display of the section symbol in the tunnel system diagram corresponding to the signal line on which the fire notification signal or fire hydrant activation signal was received, making it possible to simply and easily identify the fire hydrant device or section that has been operated.

In addition, by viewing the measurement history of the current values measured to monitor the insulation deterioration of the signal line on the screen of the monitor device 46, it is possible to properly grasp the deterioration state of the signal line. Also, since the measurement history of the current values measured upon receiving a fire notification signal or a fire hydrant activation signal is also stored, it is possible to view the measurement history of the current values of the fire notification signal and the fire hydrant activation signal on the monitor device 46 as well.

[Modifications of the present invention]
The present invention includes appropriate modifications that do not impair the objects and advantages of the present invention, and is not limited to the numerical values shown in the above embodiments.

1a: Up-line tunnel 1b: Down-line tunnel 10: Disaster prevention receiving panel 12, 12-11 to 12-26: Signal line 14: Fire hydrant valve open/close detection switch 16: Manual reporting device 18: Fire hydrant device 20: Fire pump equipment 22: Cooling pump equipment 24: IG child station equipment 26: Remote monitoring and control equipment 28: Ventilation equipment 30: Alarm display board equipment 32: Radio rebroadcast equipment 34: Television monitoring equipment 36: Lighting equipment 40: Control unit 42, 54: P-type transmission unit 44: Graphic panel 46: Monitor device 48 : Alarm unit 50: Display panel 52: Operation panel 56: Monitoring control unit 58: Current monitoring unit 60: Line receiving unit 61: Current detection unit 62: Housing 64: Panel door 70: Monitor screen 72: Measurement record screen 84: Measurement record narrowing screen 96: Second monitoring device 100: Fire representative light 102a: Up line tunnel system diagram 102b: Down line tunnel system diagram 104: Fire hydrant arrangement unit 106: Manual reporting device arrangement unit 108: Fire hydrant activation device arrangement unit 110: Fire hydrant indicator lights 112, 114: Line indicator lights

Claims (1)

a disaster prevention monitoring area is divided into predetermined sections, a plurality of predetermined disaster prevention terminal devices are connected to signal lines laid corresponding to the sections, the predetermined disaster prevention terminal devices are arranged in each of the sections of the disaster prevention monitoring area, and the predetermined disaster prevention terminal devices output signals via the signal lines;
a monitoring control unit that receives a signal from the disaster prevention terminal device via the signal line and performs a predetermined control process in response to the received signal;
A disaster prevention system comprising :
the predetermined disaster prevention terminal device is a plurality of types of disaster prevention terminal devices, each of the plurality of types of disaster prevention terminal devices being provided in a single device and arranged in each of the sections of the disaster prevention monitoring area;
When the monitoring control unit receives the signal from the disaster prevention terminal device via the signal line, the monitoring control unit causes the disaster prevention terminal device that has output the signal to be displayed in a manner distinguishable from the other disaster prevention terminal devices on the area system diagram displayed on the display unit, and also causes the monitoring control unit to cause the disaster prevention terminal device that has output the signal to be displayed in a manner distinguishable from the other disaster prevention terminal devices on the area system diagram displayed on the display unit,
The area system diagram is:
a device location section that indicates the location of devices in which the disaster prevention terminal devices are installed;
a disaster prevention terminal device arrangement section provided for each type of the disaster prevention terminal device and indicating a section in which the disaster prevention terminal device is arranged;
Equipped with
The monitoring control unit displays the device in which the disaster prevention terminal device that output the signal is installed in the device location section of the area system diagram so that it is distinguishable from other devices, and displays the section to which the disaster prevention terminal device that output the signal belongs in the disaster prevention terminal device location section of the area system diagram corresponding to the disaster prevention terminal device that output the signal so that it is distinguishable from other sections, thereby displaying the disaster prevention terminal device that output the signal so that it is distinguishable from other disaster prevention terminal devices and displaying the section to which the disaster prevention terminal device that output the signal belongs so that it is distinguishable from other sections.

Images