JP7441919B2 - 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 equipment such as reporting devices and detectors installed in the disaster prevention monitoring area to a disaster prevention reception panel.

2. Description of the Related Art Conventionally, emergency facilities have been installed in disaster prevention monitoring areas, such as tunnels such as motorways, in order to protect people and vehicles from fire accidents that occur within the tunnel.

Such emergency facilities include fire detectors, manual notification devices, and emergency telephones for monitoring and reporting fires, as well as fire hydrant systems for extinguishing fires and preventing the spread of fire. In order to protect the inside of the duct from fire, water spray equipment that sprays fire extinguishing water from a water spray head is installed, and a disaster prevention receiver panel is installed to monitor and control the terminal equipment of these emergency facilities, creating a tunnel disaster prevention system. are doing.

Tunnel disaster prevention systems, which consist of a disaster prevention receiver and terminal equipment, are broadly divided into R-type transmission systems and P-type direct transmission systems. The R-type transmission system connects terminal devices such as fire detectors with addresses set to transmission lines, and enables individual management of detection and control for each terminal device through transmission control. In the P-type direct transmission system, terminal devices are divided into predetermined sections according to their types, and a plurality of terminal devices belonging to the same section are connected to signal lines drawn out for each section, and detection and control are performed for each signal line.

By the way, in the P-type direct transmission type tunnel disaster prevention system, the terminal equipment such as the manual notification device, the fire hydrant activation device, the duct temperature detector, etc. has the signal output section by operation or detection configured as a non-voltage a contact switch, A non-voltage A contact switch is connected to the signal line drawn out from the disaster prevention receiver panel. The non-voltage a contact switch is normally off in the monitoring state, and is turned on by operation or detection operation to output a non-voltage contact signal.

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

For example, in the case of a fire notification signal from a manual notification device, the disaster prevention receiver panel performs control operations such as displaying the fire, controlling the lighting of the response lamp on the terminal side, and displaying the manual notification area, as well as controlling remote monitoring and control equipment, television monitoring equipment, etc. A fire notification signal is sent to external equipment such as variable road information board equipment, tunnel ventilation equipment, lighting equipment, etc., and predetermined response control is performed.

In addition, if the fire hydrant activation signal is from a fire hydrant activation device such as a fire hydrant valve open/close detection switch installed in a fire hydrant system, the disaster prevention receiver will transmit a pump activation signal to the fire pump equipment and remotely activate the fire pump equipment. I'm trying to get it started and running.

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

In such a conventional P-type direct transmission tunnel disaster prevention system, the insulation deteriorates due to age deterioration of the signal line (external line cable) connecting the terminal equipment, and the signal line connecting the terminal equipment deteriorates over time. When a current exceeding that expected under normal monitoring conditions flows through the area, the disaster prevention receiver panel determines that the signal has been received by the operation or detection operation of the terminal equipment, and issues an alarm. Other equipment such as information board equipment, tunnel ventilation equipment, and lighting equipment are linked, and tunnels are often closed to traffic.

To solve this problem, we installed a current monitoring device in a separate housing from the disaster prevention receiver, and monitored the current flowing through the signal line connected to the terminal equipment equipped with the non-voltage A contact switch, for example, once a day. The current is measured and recorded at regular intervals, and furthermore, if the measured current is outside a predetermined threshold range, an abnormality in the current value of the signal line is determined and an alarm is issued.

By the way, in conventional disaster prevention receivers, if the line receiving section from which the signal line is drawn out breaks down, the fire notification signal from the manual notification device and the fire hydrant activation signal from the fire hydrant activation device are not received. There is a problem in that the fire alarm function and remote activation function of fire pump equipment are lost, preventing them from operating normally.

In addition, conventionally, the current monitoring device was installed in a separate housing from the disaster prevention receiver, so there is also a transmission function and processing function that sends fire information, fault information, etc. from the disaster prevention receiver to the current measurement device and stores it along with the measurement history. There is also the problem that the equipment configuration and processing become complicated.

SUMMARY OF THE INVENTION An object of the present invention is to provide a disaster prevention system that prevents a disaster prevention monitoring function provided in a disaster prevention reception panel from being lost even if a line receiving section that receives fire signals breaks down.

(Disaster prevention system)
The present invention
A predetermined terminal device that is placed corresponding to the disaster prevention monitoring area and outputs a fire signal to the disaster prevention receiving board via a signal line when a fire occurs in the disaster prevention monitoring area;
a line receiving unit that receives a fire signal from a terminal device;
a monitoring control unit that performs predetermined control processing in response to a fire signal received by the line receiving unit;
a current detection unit that detects the current flowing in the signal line;
A disaster prevention system equipped with
The monitoring control unit is
Detects whether there is a failure in the line receiving section that receives fire signals,
If a failure in the line receiving section that receives the fire signal is not detected, the presence or absence of a fire is determined based on whether or not the line receiving section receives the fire signal, and the presence or absence of a fire is determined based on the current detected by the current detection section. Determines whether there is an abnormal current due to changes in the signal line status,
If a failure is detected in the line receiving unit that receives the fire signal, the current detection unit detects whether or not the line receiving unit has received the fire signal for the signal line connected to the failed line receiving unit. It is characterized in that it is determined whether or not a fire signal has been received based on the current value detected by.

(Treatment in case of fire)
The supervisory control unit determines that there is a fire based on the reception of the fire signal by the line receiving unit without detecting a failure in the line receiving unit that receives the fire signal, and if a failure in the line receiving unit that receives the fire signal is detected. If it is determined that a fire signal has been received based on the current value detected by the current detection unit for the signal line connected to the line reception unit, a fire alarm is output.

(Processing at the time of current abnormality)
When determining that the current is abnormal based on the current detected by the current detection unit, the monitoring control unit displays a measurement history including at least the current value of the detected current.

(Determination of failed line receiving unit)
The disaster prevention system further includes:
Other terminal equipment that is placed corresponding to the disaster prevention monitoring area and outputs a predetermined signal to the disaster prevention receiver panel via a signal line different from the terminal equipment that outputs the fire signal. and,
Unlike the line receiving section that receives fire signals, another line receiving section that receives predetermined signals from other terminal equipment,
Equipped with
When a failure of the line reception unit is detected, the supervisory control unit determines whether or not the failed line reception unit is the line reception unit that receives the fire signal.

(basic effect)
The present invention provides a predetermined terminal device that is arranged corresponding to a disaster prevention monitoring area and outputs a fire signal to a disaster prevention reception board via a signal line when a fire occurs in the disaster prevention monitoring area, and a line that receives the fire signal from the terminal device. A disaster prevention system comprising a receiving section, a monitoring control section that performs predetermined control processing according to a fire signal received by the line receiving section, and a current detection section that detects the current flowing in the signal line, the monitoring and control system comprising: The part detects the presence or absence of a failure in the line reception unit that receives the fire signal, and if the failure of the line reception unit that receives the fire signal is not detected, the In addition to determining the presence or absence of a fire, the system also determines the presence or absence of an abnormal current due to a change in the state of the signal line based on the current detected by the current detection unit, and if a failure of the line receiving unit that receives the fire signal is detected. For the signal line connected to the faulty line receiver, the system determines whether or not a fire signal has been received based on the current value detected by the current detector instead of whether the line receiver has received the fire signal. Therefore, even if the line receiving section that receives the fire signal fails, it is possible to determine whether or not a fire signal has been received based on the current value detected by the current detection section and perform the prescribed control in response to the fire signal. It becomes possible to recover from a failure in the line receiving unit and continue control processing related to disaster prevention monitoring, thereby increasing the reliability of disaster prevention monitoring.

(Effects of fire treatment)
In addition, the supervisory control unit determines that there is a fire based on the reception of the fire signal by the line receiving unit without detecting a failure in the line receiving unit that receives the fire signal, and if the failure of the line receiving unit that receives the fire signal is detected. If it is determined that a fire signal has been received based on the current value detected by the current detection unit for the signal line that is detected and connected to the line reception unit, a fire alarm is output, so that the fire signal is not received. It is possible to output a fire alarm even if the line receiving section fails, and it is possible to recover from the failure of the line receiving section and continue normal fire monitoring, thereby increasing the reliability of disaster prevention monitoring.

(Effects of processing at the time of current abnormality)
In addition, when the supervisory control unit determines that there is an abnormal current based on the current detected by the current detection unit, the monitoring control unit performs measurement that includes at least the current value of the detected current, so the current abnormality is determined based on the displayed measurement history. It is possible to know the information of

(Effects due to determination of faulty line receiving unit)
In addition, the disaster prevention system is further arranged to correspond to the disaster prevention monitoring area, and is different from the terminal equipment that outputs the fire signal. The supervisory control unit includes other terminal equipment that outputs signals, and another line receiving unit that receives predetermined signals from other terminal equipment, unlike the line receiving unit that receives fire signals. If a failure is detected in the line receiving unit, it is determined whether or not the failed line receiving unit is the one that receives the fire signal, so the system is equipped with a line receiving unit that receives a signal different from the fire signal. Even in the event of a fire, predetermined control processing can be performed in response to a fire signal.

Explanatory diagram showing an overview of the tunnel disaster prevention system Explanatory diagram showing the external appearance of the disaster prevention reception panel Explanatory diagram showing the monitor device visible when the panel door of the disaster prevention receiver is opened Explanatory diagram showing the graphic panel in Figure 2 taken out Explanatory diagram showing the display panel in Figure 2 taken out Block diagram showing an overview of the functional configuration of the tunnel disaster prevention system Explanatory diagram showing the measurement record screen of the monitor device displaying the measurement history by periodic measurement Explanatory diagram showing the measurement record narrowing screen of the monitor device, where the measurement history extracted by setting the narrowing conditions is displayed. Flowchart showing disaster prevention monitoring and control using the disaster prevention receiver panel Explanatory diagram showing another embodiment of the disaster prevention receiving board

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

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

The fire hydrant device 18 stores a hose with a nozzle inside the fire hydrant door, and in the event of a fire, the fire hydrant door is opened and the hose with a nozzle is pulled out, and when the fire hydrant valve opening/closing lever is opened, fire extinguishing water is discharged. The switch 14 is turned on and a fire hydrant start signal is output to the disaster prevention receiver 10 to start the fire pump.

Further, the fire hydrant device 18 is provided with a notification device door, and the notification device door is provided with a manual notification device (transmitter) 16. In this way, the fire hydrant device 18 is provided with the fire hydrant valve open/close detection switch 14 and the manual notification device 16 as terminal equipment, and when the non-voltage a contact switch functioning as a contact means is turned on, a fire hydrant start signal and a fire alarm are sent. A notification signal (fire signal) is output.

The fire hydrant device 18 is equipped with a pump start switch used by the fire brigade, but since it is the same switch that outputs the same fire hydrant start signal as the fire hydrant valve open/close detection switch 14, the following will be explained below. This will be explained as a fire hydrant valve opening/closing detection switch (including a pump starting switch) 14. Further, the manual notification device 16 is installed not only in the fire hydrant device 18 but also in the emergency telephone box, but in the following explanation, the manual notification device provided in the fire hydrant device 18 will be explained as a representative.

In addition to the fire hydrant device 18, tunnel emergency equipment includes a fire detector, an automatic valve device, a duct temperature detector, etc., but these are not shown.

Fire detectors are installed, for example, at intervals of 25 meters or 50 meters along the longitudinal wall of the tunnel, and monitoring areas are set on both sides, 25 meters or 50 meters on the left and right, to detect flames caused by a fire and issue a fire alarm. .

The automatic valve device constitutes water spray equipment, and the main valve is opened by remote opening control of the operating electric valve, and fire extinguishing water is sprayed from multiple water spray heads installed in the longitudinal direction of the upper part of the tunnel wall. to protect the tunnel structure from fire.

The temperature detector inside the duct is placed in the duct where the pipes and cables are laid inside the lifeguard passage in the longitudinal direction of the tunnel.It detects the temperature rise inside the duct due to a cable fire, etc., and is a non-voltage device that functions as a contact means. A temperature detection signal is output when the a contact switch is turned on.

Disaster prevention reception panels 10 are installed at monitoring centers and the like 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 board 10 is provided with a current monitoring function of monitoring the current of the P-type signal line connected to the terminal equipment.

From the disaster prevention receiving board 10, P-type signal lines 12-11 to 12-16 and 12-21 to 12-26 are connected to each predetermined section divided in the longitudinal direction of the tunnel in the up-line tunnel 1a and the down-line tunnel 1b. In this embodiment, for example, four fire hydrant devices 18 form one section, and a plurality of fire hydrant valve open/close detection switches 14 and manual notification device 16 provided in each section are connected. ing.

Furthermore, for the duct temperature detectors installed in the duct, a P-type signal line is similarly drawn out for each section, and multiple duct temperature sensors installed in each section are connected. However, illustration is omitted. Furthermore, the signal lines 12-11 to 12-26 may be referred to as the signal line 12 if there is no need to distinguish them.

The P-type signal line 12 is composed of a signal line and a common line, and is connected to a non-voltage a contact switch provided in each of the fire hydrant valve open/close detection switch 14 of the fire hydrant device 18, the manual notification device 16, and the duct temperature detector. In such a case, a fire hydrant starting signal, a fire report signal, and a temperature detection signal are sent to the disaster prevention receiving panel 10 by turning on the voltageless A contact switch and flowing a line current through each operation or detection operation.

In addition to the fire hydrant system 18, fire detector, and automatic valve system, emergency facilities for the tunnel include fire pump equipment 20, duct cooling pump equipment 22, IG slave station equipment 24, ventilation equipment 28, and alarm display board equipment. 30, radio rebroadcasting equipment 32, television monitoring equipment 34, lighting equipment 36, etc. are installed, and except for connecting IG slave station equipment 24 with a data transmission line, other equipment is connected to P-type signal lines for disaster prevention. They are individually connected to the receiving board 10. Here, the IG slave station equipment 24 is a communication equipment that connects the disaster prevention receiving board 10 and the remote monitoring and control equipment 26, which is a host equipment provided outside, via the network 25.

The ventilation equipment 28 is equipment that generates a flow of air in the longitudinal direction of the tunnel by giving energy to the air in the tunnel by high blowing wind velocity generated by the operation of a jet fan installed on the ceiling side of the tunnel.

Further, the alarm display board equipment 30 is equipment that notifies users of the tunnel of abnormalities within the tunnel by displaying them on an electronic display board. The radio rebroadcasting equipment 32 is equipment that allows drivers and the like to receive information from road administrators inside the tunnel. The television monitoring equipment 34 is equipment for checking the scale and location of a fire, operating water spray equipment, and grasping the situation inside the tunnel when conducting evacuation guidance. The lighting equipment 36 is equipment that drives and manages lighting equipment in the tunnel.

[Disaster prevention receiver]
FIG. 2 is an explanatory diagram showing the external appearance of the disaster prevention receiver, with FIG. 2(A) showing the front and FIG. 2(B) showing the side. FIG. 3 is an explanatory diagram showing a state in which the panel door of the disaster prevention reception board is opened and the monitor device is viewed.

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

On the front side of the panel door 64, there are a graphic panel 44 on which line indicator lights are arranged in a tunnel system diagram, a display panel 50 on which a plurality of representative lights are arranged, and an operation panel 52 on which various operation switches and telephones are arranged. provided.

Inside the housing 62, a monitor device 46 using a liquid crystal display with a touch panel is arranged. 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 the support frame 68 in the housing 62 appears, and the current value measurement of the signal line is displayed on the screen of the monitor device 46. Current value measurement history including results and judgment results can be displayed.

(Graphic panel)
FIG. 4 is an explanatory diagram showing the graphic panel of FIG. 2 taken out. As shown in FIG. 4, a fire representative light 100 is provided at the upper center of the graphic panel 44, and following the tunnel name below, an up line tunnel system diagram 102a and a down line tunnel system diagram 102b are displayed as tunnel system diagrams. is depicted.

The upline tunnel system diagram 102a is divided into three stages: a fire hydrant arrangement section 104, a manual notification device arrangement section 106, and a fire hydrant activation device arrangement section 108. In the fire hydrant arrangement section 104, marks indicating, for example, 22 fire hydrant devices arranged at intervals of 50 meters in the longitudinal direction of the tunnel are arranged.

The manual notification device arrangement unit 106 is divided into six sections corresponding to P-type signal lines, and each section is marked with a section number from "1 to 6" (corresponding to the line number). A line indicator light 110 is provided in each section.

Similarly, the fire extinguishing device arrangement section 108 is divided into six sections corresponding to the P-type signal line, and each section is marked with a section number "1 to 6", and each section is marked with a line display. A light 112 is provided. Note that the fire hydrant placement section 104, manual notification device placement section 106, and fire hydrant activation device placement section 108 are the same for the down-line tunnel system diagram 102b.

The line indicator lights 110 and 112 provided on the graphic panel 44 are turned on when it is determined that there is a fire or a fire hydrant has been activated by receiving a signal from the corresponding signal line.

(Display panel)
FIG. 5 is an explanatory diagram showing the display panel of FIG. 2 taken out. As shown in FIG. 5, various indicator lights necessary for disaster prevention monitoring are arranged on the display panel 50, and a manual report reception section failure light 120 is arranged in correspondence with the failure monitoring function provided in the disaster prevention reception panel 10. , a manual notification receiver failure recovery light 122, a fire hydrant receiver failure light 124, and a fire hydrant receiver failure recovery light 126.

Furthermore, a manual notification line disconnection light 128 and a fire hydrant line disconnection light 130 are provided in correspondence with the disconnection monitoring function provided in the disaster prevention receiving panel 10. In addition, corresponding to the current monitoring function provided in the disaster prevention receiver 10, a current monitoring device measurement light 132, a current monitoring device failure light 134, a manual notification current value abnormality light 136, and a fire hydrant current value abnormality light 138 are provided. . These indicator lights are lit or blinked in a predetermined display color when each event is determined.

[Disaster prevention receiver configuration]
FIG. 6 is a block diagram schematically showing the functional configuration of the tunnel disaster prevention system. As shown in FIG. 6, the disaster prevention reception panel 10 includes a control unit 40, and the control unit 40 is a function realized by, for example, executing a program, and the hardware includes various inputs including a CPU, memory, and AD conversion port. Use a computer circuit or the like with an output port or the like.

The control unit 40 is provided with a P-type transmission unit 42 that connects various terminal devices installed in the tunnel through a P-type signal line 12. , an alarm unit 48 equipped with a speaker, a buzzer, an alarm indicator light, etc., a display panel 50 equipped with various indicator lights, and an operation panel 52 equipped with various switches, and further provided with an IG slave station equipment 24, a ventilation equipment 28, and an alarm unit 48. A P-type transmission unit 54 is provided in which display board equipment 30, radio rebroadcast equipment 32, television monitoring equipment 34, lighting equipment 36, fire pump equipment 20, and cooling pump equipment 22 are individually connected via P-type signal lines. .

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

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

The control unit 40 is provided with the functions of a monitoring control unit 56 and a current monitoring unit 58 as functions realized by executing a program.

(Monitoring control unit)
The monitoring control unit 56 detects detection from terminal devices such as a fire hydrant valve open/close detection switch 14 provided in a fire hydrant device 18 installed in the tunnel, a manual notification device 16, a fire detector, a duct temperature detector, and an automatic valve device. Performs predetermined monitoring and control based on signals and operation signals.

Further, when the supervisory control unit 56 receives, for example, a fire notification signal (fire signal) by operating the manual notification device 16 provided in the fire hydrant device 18 via the line receiving unit 60, the supervisory control unit 56 causes the alarm unit 48 to emit a main sound sound. At the same time, the fire representative light 100 of the graphic panel 44 shown in FIG. It lights up to display a manual notification section, and also sends a response signal to the fire hydrant device 18 to light up the response lamp.

Further, following the reception of the fire report signal, the supervisory control unit 56 sends a fire hydrant activation signal to the line receiving unit 60 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 in the fire hydrant device. If the fire hydrant activation signal is received via the graphic panel 44 shown in FIG. A pump start signal is sent to the fire pump equipment 20 to start the fire pump.

Furthermore, the supervisory control unit 56 controls other equipment based on the reception of the fire report signal, such as control to transmit a fire report signal to the remote supervisory control equipment 26 via the IG slave station equipment 24 to issue an alarm, and control to issue an alarm to the TV monitoring equipment 34. control to display the manual notification compartment by the alarm display board equipment 30, control to ventilate the manual notification compartment by the ventilation equipment 28, control to illuminate the manual notification compartment by the lighting equipment 36, etc. I do.

Furthermore, when the temperature inside the duct rises and a temperature detection signal is received from the duct temperature detector, the monitoring control unit 56 outputs a pump start signal to the cooling pump equipment 22 and starts watering from the head installed inside the duct. control to cool the inside of the duct.

Further, the supervisory control unit 56 monitors a disconnection fault in the signal line 12, and when detecting a disconnection failure in the signal line for the manual notification device 16, causes the alarm unit 48 to sound a fault sound and display the display shown in FIG. When the manual notification line disconnection light 128 on the panel 50 lights up in yellow, for example, and a disconnection failure in the signal line 12 to the fire hydrant valve open/close detection switch 14 is detected, the alarm section 48 sounds an audible failure sound and displays the display shown in FIG. Control is performed to turn on the fire hydrant line disconnection light 130 on the panel 50, for example, in yellow.

The monitor control unit 56 monitors the signal line 12 for a disconnection fault by connecting a terminating resistor to the end of the signal line 12 and passing a disconnection monitoring current, and detects a disconnection fault when the disconnection monitoring current is interrupted.

(Current monitoring section)
The current monitoring unit 58 measures the current value of the signal line 12 connected to a terminal device equipped with a non-voltage a contact switch including the fire hydrant valve opening/closing detection switch 14 and the manual notification device 16, and the measured current value is set to a predetermined upper limit. If the current value is out of the threshold range determined by the current value and the lower limit value, it is determined that the current value is abnormal, and control is performed to store the measurement results as a measurement history in a memory using a removable memory card.

The current value of the signal line 12 is measured by the current monitoring unit 58, for example, by AD converting and reading the detection voltage of the current detection resistor inserted into the signal line 12 provided in the current detection unit 61 in FIG. In order to remove this, the average value of the current values measured for a predetermined period of time is determined.

Here, the current value measurement by the current monitoring unit 58 includes fixed period measurement, automatic measurement, and manual measurement. The periodic measurement of the current monitoring unit 58 involves sequentially measuring the current values of all the signal lines 12 at predetermined intervals, for example, once a day, and detecting the current when the measured current value is out of a predetermined threshold range. A value abnormality is determined, and control is performed to store the measurement results and determination results in a memory as a measurement history.

The current monitoring unit 58 automatically measures the current value by sequentially measuring the current values flowing through all the signal lines 12 when the monitor device 46 detects an automatic measurement operation, and detects that the measured current value is outside a predetermined threshold range. In this case, it is determined that the current value is abnormal, and control is performed to display the measurement results on the screen of the monitor device 46.

Manual measurement of a current value by the current monitoring unit 58 is such that when the monitor device 46 detects a manual measurement operation including selection of a signal line, the current value flowing through the selected signal line is measured, and the measured current value is determined as a predetermined value. If the current value is out of the threshold range, it is determined that the current value is abnormal, and control is performed to display the measurement result on the screen of the monitor device 46.

Further, when detecting a measurement history display operation by the monitor device 46, the current monitoring unit 58 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 lights up the current monitoring device measurement light 132 in the display panel 50 shown in FIG. 5 in green during periodic measurement, automatic measurement, or manual measurement. When a current value abnormality is determined by measurement or manual measurement, control is performed to cause the manual notification current value abnormality light 136 or the fire hydrant current value abnormality light 138 in the display panel 50 shown in FIG. 5 to light up in yellow for representative display. .

Further, when detecting an abnormality history display operation by the monitor device 46, the current monitoring unit 58 extracts a measurement history in which a current value abnormality has been determined from the current value measurement history stored in the memory, and displays it on the monitor device 46. Controls the screen to be displayed in chronological order.

[Recovery control for failure of line receiver]
(Recovery control for failure of line receiver for manual reporting)
A monitoring control unit 56 provided in the control unit 40 of the disaster prevention reception panel 10 is configured to operate a monitoring control unit 56 of one of the line receiving units 60 from which the signal lines 12-11 to 12-16 to which the manual notification device 16 shown in FIG. 6 is connected is drawn out. When a failure is detected, the current monitoring unit 58 is instructed to measure the current value flowing through the signal line 12 connected to the line receiving unit 60 where the failure has been detected, and the measured current value is equal to or higher than a predetermined fire threshold. In this case, recovery control is performed to determine a fire and output a fire alarm.

In addition, when the supervisory control unit 56 detects a failure in the line receiving unit 60 for manual notification and instructs the current monitoring unit 58 to perform recovery control, the monitoring control unit 56 changes the once-a-day measurement cycle in which the current value is measured. Control is performed to measure the current value flowing through the signal line 12 connected to the line receiving section 60 in which the failure has been detected by changing the predetermined fire monitoring cycle to a shorter one, for example, once every minute.

Furthermore, when a failure of the line receiving unit 60 for manual notification is detected, the supervisory control unit 56 lights up the manual notification receiving unit failure light 120 of the display panel 50 shown in FIG. 5 in yellow to indicate the failure of the line receiving unit. , and also instructs the current monitoring unit 58 to perform recovery control, and monitors the fire by measuring the current value flowing through the signal line 12 connected to the manual reporting line receiving unit 60 where a failure has been detected. When the process is started, control is performed to display failure recovery by lighting the manual reception section failure recovery light 122 of the display panel 50 shown in FIG. 5, for example, in green.

Therefore, even if the line receiving section 60 that receives the fire report signal fails, the current monitoring section 58 changes the value of the current flowing from the failed line receiving section 60 to the signal line 12 at short intervals based on instructions from the supervisory control section 56. If the measured current value increases above the fire threshold, a fire can be determined and a fire alarm can be output, and a failure of the line receiving section 60 can be completely recovered by the current monitoring section 58. It becomes possible to continue normal fire monitoring and improve the reliability of disaster prevention monitoring inside tunnels.

(Recovery control for failure of line receiver for starting fire hydrant)
The monitoring control unit 56 provided in the control unit 40 of the disaster prevention reception panel 10 has signal lines 12-21 to 12-26 connected to the fire hydrant valve opening/closing detection switch 16 functioning as a fire hydrant starting device shown in FIG. When a failure is detected in any of the line receiving sections 60, the current monitoring section 58 is instructed to change the current measurement period from once a day to a shorter period, for example, once every minute. Change to a predetermined fire monitoring cycle, measure the current value flowing through the signal line 12 connected to the line receiving unit 60 where the failure was detected, and start the fire hydrant when the measured current value is equal to or higher than a predetermined activation threshold. Recovery control is performed to make the determination and send a pump activation signal to the fire pump equipment 20.

Further, when a failure is detected in the line receiving unit 60 for starting the fire hydrant, the supervisory control unit 56 lights up the fire hydrant receiving unit failure light 124 of the display panel 50 shown in FIG. 5 in yellow to indicate the failure of the line receiving unit. The process also instructs the current monitoring unit 58 to perform recovery control and monitors the activation of the fire hydrant by measuring the current value flowing through the signal line 12 connected to the line receiving unit 60 for the fire hydrant in which the failure has been detected. When the process is started, control is performed to display failure recovery by lighting up the fire hydrant receiver failure recovery light 126 of the display panel 50 shown in FIG. 5 in green, for example.

Therefore, even if the line receiving unit 60 that receives the fire hydrant activation signal fails, the current monitoring unit 58 measures the current value flowing from the failed line receiving unit 60 to the signal line at short intervals based on instructions from the supervisory control unit 56. When the measured current value increases above the activation threshold, it is possible to determine whether the fire hydrant is activated and send a pump activation signal, and the failure of the line receiving unit 60 can be completely recovered by the current monitoring unit 58. The function of remotely starting the fire pump equipment 20 can be continuously maintained, and the reliability of disaster prevention monitoring inside the tunnel can be improved.

(Display of measurement record screen by monitor device)
FIG. 7 is an explanatory diagram showing a measurement recording screen of the monitor device displaying the measurement history by periodic measurement.

As shown in FIG. 7, 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 are indicated by hatching. As shown, when the measurement record selection button 75 is operated, the illustrated measurement record screen 72 is displayed.

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

By operating page switching buttons 79 and 80, pages of measurement history detailed information 83 can be switched. A file save button 81 instructs to store the measurement results in memory. The memory retrieval button 82 is operated to retrieve the memory storing the current value measurement information from the disaster prevention receiver panel 10.

The measurement history detailed information 83 displayed in the center of the measurement record screen 72 is divided into the following items: line number indicated by "No", date and time, item, upper/lower limit value, measured value, and judgment, and is displayed for each signal line. The information is displayed in a list.

Here, for line number 004, the measured value is 1.25 mA, which exceeds the upper limit value of 1.00 mA, so it is determined that the current value is abnormal by displaying "NG". Since the measured values of the other line numbers are within the range of the upper and lower limits, they are determined to be normal by displaying "OK".

The current monitoring unit 58 stores a measurement history of current values measured at a measurement cycle once a day, and when the measurement record selection button 75 is operated, measurement history detailed information 83 is displayed based on the stored history information. is displayed on the screen, but when performing recovery control for the failed line receiving unit 60 based on instructions from the supervisory control unit 56, the current value of the signal line is measured at short intervals, for example, once every minute. , the current value in this recovery control is also stored as a measurement history.

Therefore, when the measurement record screen 72 is displayed as shown in FIG. 7, the measurement history of current values measured in recovery control for a failure of the line receiving section 60 can also be viewed.

(Narrowed display of measurement history)
When the line selection button 77 arranged at the bottom of the measurement record screen 72 is operated, the display is switched to a measurement record narrowing-down screen 84 shown in FIG.

The measurement record narrowing down screen 84 in FIG. It is provided.

The system selection unit 85 selects from uplink and downlink. The device selection unit 86 selects from manual notification, fire hydrant, and duct. The section selection section 87 inputs the section number.

On the measurement record narrowing down screen 84, for example, if you want to narrow down the measurement records to "section 01 in the upline manual reporting device", enter "upline" in the system selection section 85 and "upline" in the device selection section 86 as shown in the figure. When "Manual report" is set to "01" in the section selection section 87 and the OK button 88 is operated, the corresponding narrowed-down measurement record 94 is displayed.

If the release button 89 is operated in this state, the narrowing down conditions and narrowing down measurement record 94 are cleared. Furthermore, when the close button 93 is operated, the screen returns to the measurement recording screen 72 shown in FIG.

By using such a function of the measurement record narrowing down screen 84, it is possible to narrow down and display measurement records from a huge amount of stored measurement records by setting narrowing down conditions that combine system, device, and section. For example, by displaying on the screen the current value measured by recovery control for a failure of the line receiving unit 60, it is possible to investigate the time when a fire occurred.

Note that in addition to the system, device, and section, a period may also be selected as the measurement record narrowing conditions.

[Disaster prevention monitoring and control]
FIG. 9 is a flowchart showing disaster prevention monitoring control by the disaster prevention receiving panel, which is 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. 9, the monitoring control unit 56 performs fire monitoring control in step S1, and when it receives a fire notification signal from the manual notification device 16 via the line receiving unit 60, it outputs a fire alarm and also sends other notifications. Performs fire alarm control that links equipment. Further, when the supervisory control unit 56 receives a fire hydrant starting signal via the line receiving unit 60 caused by turning on the fire hydrant valve opening/closing switch 14 accompanying the operation of the fire hydrant valve opening/closing lever provided in the fire hydrant device, the supervisory control unit 56 sends the pump to the fire pump equipment 20 . Performs control to start by sending a start signal.

Subsequently, the supervisory control unit 56 determines whether or not there is a failure in the line receiving unit 60 in step S2. If there is no failure in the line receiving unit 60, the process proceeds to step S3, and in step S3, the current monitoring unit 58 When it is determined that the current measurement cycle has been reached, the process proceeds to step S4, in which the current values of all signal lines are sequentially measured, the presence or absence of current value abnormality is determined, and the measurement results and judgment results are stored in the memory as a measurement history. Performs value measurement control.

On the other hand, when the supervisory control unit 56 determines that the line receiving unit 60 is malfunctioning in step S2, it instructs the current monitoring unit 58 to change its measurement cycle to, for example, a fire monitoring cycle of once per minute, and in step S5 When it is determined that the fire monitoring cycle has been reached, the process proceeds to step S6, where the current value flowing through the signal line of the failed line receiving unit 60 is measured, and the process proceeds to step S7, where the monitoring control unit 56 determines whether the failed line receiving unit is fire safe. If it is for a fire, it is compared with a fire threshold in step S8, and if it is determined that it is greater than or equal to the fire threshold, the process advances to step S9 to perform fire alarm control.

In the fire alarm control in step S9, the fire representative light 100 provided in the disaster prevention receiving panel 10 shown in FIG. The line indicator light 110 of the signal line or the line indicator light 112 in the fire hydrant activation device placement unit 108 where reception of the manual notification signal has been determined is turned on.

Furthermore, when the fire alarm control in step S9 is performed, the person in charge displays the measurement record narrowing down screen 84 shown in FIG. 8 on the monitor device 46 provided in the housing 62 shown in FIG. 3 as necessary. By switching the button, detailed fire information including the line number, time, item, and current measurement value of the signal line that determined the fire is displayed, and the detailed fire information displayed on the monitor device 46 is used to display the line receiving section. Be able to recognize failures and respond appropriately. Note that the measurement record narrowing down screen 84 may be automatically displayed on the monitor device 46 when fire alarm control is performed.

Further, if the supervisory control unit 56 determines in step S7 that the failed line receiving unit 60 is for activating a fire hydrant, the process proceeds to step S10, and if it determines that the activation threshold is greater than or equal to a predetermined activation threshold, the process proceeds to step S11 to extinguish the fire. Performs pump equipment startup control.

When the activation control of the fire pump equipment in step S11 is performed, the person in charge displays the measurement record narrowing down screen shown in FIG. 8 as necessary on the monitor device 46 provided in the casing 62 shown in FIG. 84, the detailed information including the line number, time, item, and current measurement value of the signal line that determined reception of the fire hydrant activation signal is displayed by button switching, and the line is displayed from the detailed information displayed on the monitor device 46. Be able to recognize failures in the receiving unit and respond appropriately. Note that the measurement record narrowing down screen 84 may be displayed automatically on the monitor device 46 when startup control of the fire pump equipment is performed.

[Disaster prevention receiving board with main monitor device]
FIG. 10 is an explanatory diagram showing another embodiment of the disaster prevention receiving board, with FIG. 10(A) showing the front and FIG. 10(B) showing the side.

As shown in FIG. 10, the disaster prevention receiving board 10 of this embodiment has a panel door 64 provided on the front side of a box-shaped housing 62 that is open from front to back and can be opened and closed by a handle operation, and a touch panel equipped on the front side. A main monitor device 96 using a liquid crystal display is installed, and an operation display section 98 is arranged below it. On the screen of the main monitor device 96, an image corresponding to the tunnel system diagram shown in FIG. 4 drawn on the graphic panel 44 of the disaster prevention receiving board 10 in FIG. Images corresponding to the various indicator lights displayed are displayed on the screen, and predetermined information regarding tunnel disaster prevention monitoring is also displayed.

Similar to the embodiment shown in FIG. 2, a monitor device 46 using a liquid crystal display with a touch panel is arranged inside the housing 64, and the measurement history of the current value shown in FIGS. 7 and 8 is read and displayed. .

In the disaster prevention receiving panel 10 provided with the main monitor device 96 in this way, when a failure in the line receiving section is detected, the occurrence of the line receiving section failure is displayed on the screen on the main monitor device 96, and the failure is detected. When a fire monitoring process is started by measuring the current value flowing through the signal line connected to the line receiving unit, the recovery from the line receiving unit failure is displayed on the screen of the main monitor device 96.

In this embodiment, when a fire is determined by the line monitoring unit, a fire representative light (not shown) provided in the disaster prevention receiving panel 10 shown in FIG. Fire information such as the area where the fire occurred will be displayed.

Furthermore, if the line monitoring unit determines that a fire has occurred by measuring the current flowing through the signal line of the manual notification device connected to the line receiving unit where a failure has been detected, the person in charge will By switching the button to display the measurement record narrowing screen 84 shown in FIG. Detailed information is displayed, and from the detailed fire information displayed on the monitor device 46, it is possible to know the failure of the line receiving unit and take appropriate measures.

In addition, the line monitoring unit 56 measures the current value flowing through the signal line of the fire hydrant valve open/close detection switch connected to the line receiving unit where the failure has been detected, determines whether a fire hydrant start signal has been received, and starts the fire pump equipment. When the control is performed, the person in charge can activate the fire hydrant by displaying the measurement record narrowing screen 84 shown in FIG. Detailed information including the line number, time, item, and current measurement value of the signal line for which reception of the signal was determined is displayed, and from the detailed fire information displayed on the sub-monitor device 46, the failure of the line reception unit is known and appropriate response is taken. be able to.

[Modification of the present invention]
In the above embodiment, a manual notification device and a fire hydrant valve open/close detection switch are used as examples of terminal equipment connected to a signal line. When the fire threshold is exceeded, it is determined that there is a fire and a fire alarm is output.The terminal device is a fire detector installed in the tunnel, and the fire detection device is connected to the line receiving unit where the failure is detected. A fire may be determined and a fire alarm may be output when the current value flowing through the signal line of the device is equal to or greater than a predetermined fire threshold.

Furthermore, the present invention includes appropriate modifications that do not impair its objects and advantages, and is not limited by the numerical values shown in the above embodiments.

1a: Up line tunnel 1b: Down line tunnel 10: Disaster prevention reception panel 12, 12-11 to 12-2n: Signal line 14: Fire hydrant valve open/close detection switch 16: Manual notification device 18: Fire hydrant device 20: Fire pump equipment 22: Cooling pump equipment 24: IG slave station equipment 26: Remote monitoring and control equipment 28: Ventilation equipment 30: Alarm display board equipment 32: Radio rebroadcast equipment 34: TV monitoring equipment 36: Lighting equipment 40: Control parts 42, 54: P type Transmission section 44: Graphic panel 46: Monitor device 48: Alarm section 50: Display panel 52: Operation panel 56: Monitoring control section 58: Current monitoring section 60: Line receiving section 61: Current detection section 62: Housing 64: Panel door 70: Monitor screen 72: Measurement record screen 84: Measurement record narrowing screen 96: Main monitor device 100: Fire representative light 102a: Up line tunnel system diagram 102b: Down line tunnel system diagram 104: Fire hydrant arrangement section 106: Manual notification device arrangement Section 108: Fire hydrant activation device arrangement section 110, 112: Line indicator light 120: Manual notification receiving section fault light 122: Manual notification receiving section fault recovery light 124: Fire hydrant receiving section fault light 126: Fire hydrant receiving section fault recovery light 128: Manual Notification line disconnection light 130: Fire hydrant line disconnection light 132: Current monitoring device measuring light 134: Current monitoring device failure light 136: Manual notification current value abnormal light 138: Fire hydrant current value abnormal light

Claims (4)

a predetermined terminal device that is arranged corresponding to a disaster prevention monitoring area and outputs a fire signal to a disaster prevention receiving board via a signal line when a fire occurs in the disaster prevention monitoring area;
a line receiving unit that receives the fire signal from the terminal device;
a monitoring control unit that performs predetermined control processing in response to the fire signal received by the line receiving unit;
a current detection unit that detects a current flowing in the signal line;
A disaster prevention system equipped with
The monitoring control unit includes:
Detecting the presence or absence of a failure in the line receiving section that receives the fire signal,
If no failure is detected in the line receiving unit that receives the fire signal, the presence or absence of a fire is determined based on whether or not the line receiving unit receives the fire signal, and the current detected by the current detection unit is Based on this, determine whether there is a current abnormality due to a change in the state of the signal line,
If a failure is detected in the line receiving unit that receives the fire signal, the signal line connected to the failed line receiving unit will be replaced with a message indicating whether or not the line receiving unit has received the fire signal. A disaster prevention system characterized by determining whether or not the fire signal is received based on a current value detected by the current detection section.
The disaster prevention system according to claim 1,
The supervisory control unit determines that there is a fire based on the reception of the fire signal by the line receiving unit without detecting a failure in the line receiving unit that receives the fire signal, and the line receiving unit that receives the fire signal. If a failure is detected and it is determined that the fire signal has been received based on the current value detected by the current detection unit for the signal line connected to the line reception unit, outputting a fire alarm. A distinctive disaster prevention system.
The disaster prevention system according to claim 1 or 2,
The disaster prevention system is characterized in that, when the monitoring control unit determines that the current is abnormal based on the current detected by the current detection unit, it displays a measurement history including at least the current value of the detected current. .
The disaster prevention system according to any one of claims 1 to 3,
The disaster prevention system further includes:
A terminal device arranged corresponding to the disaster prevention monitoring area and outputting a predetermined signal to the disaster prevention receiving board via a signal line different from the terminal device outputting the fire signal and different from the terminal device outputting the fire signal. with other terminal equipment,
Unlike the line receiving unit that receives the fire signal, another line receiving unit that receives the predetermined signal from the other terminal device;
Equipped with
The disaster prevention system is characterized in that, when a failure of the line receiving unit is detected, the monitoring control unit determines whether the failed line receiving unit is the line receiving unit that receives the fire signal.

Images