JP6709146B2 - Tunnel disaster prevention system - Google Patents

Description

TECHNICAL FIELD The present invention relates to a tunnel disaster prevention system for connecting a terminal device such as a notification device or a detector installed in a tunnel to a disaster prevention reception panel to monitor an abnormality in the tunnel.

BACKGROUND ART Conventionally, an emergency facility is installed in a tunnel such as a road for automobiles in order to protect a person and a vehicle from a fire accident occurring in the tunnel.

As such an emergency facility, a fire detector, a manual notification device, and an emergency telephone are installed to monitor and report a fire, and a fire hydrant device is installed to extinguish the fire and prevent the spread of fire. In order to protect the inside of the duct from fire, a water spray that sprays fire extinguishing water from the water spray head is installed, and a disaster prevention reception board that monitors and controls the terminal equipment of these emergency facilities is installed to build a tunnel disaster prevention system. is doing.

The tunnel disaster prevention system consisting of the disaster prevention reception board and terminal equipment is roughly divided into the R type transmission method and the P type direct transmission method. The R-type transmission method enables individual management by connecting a terminal device such as a fire detector whose address is set to a transmission line and performing detection and control for each terminal device by transmission control. The P-type direct delivery system divides the terminal device into predetermined partition units according to the type of the terminal device, connects a plurality of terminal devices belonging to the same partition to the signal line drawn out in the partition unit, and performs detection and control for each signal line unit.

By the way, in a P-type direct delivery type tunnel disaster prevention system, terminal devices such as a manual notification device, a fire hydrant activation device, and a duct temperature detector have a signal output unit operated or detected as a non-voltage a contact switch, A non-voltage a contact switch is connected to the signal line drawn from the disaster prevention reception board. The no-voltage a-contact switch is normally off in the monitoring state, and is turned on by an operation or a detection operation to output a no-voltage contact signal.

Specifically, the power supply voltage is applied from the disaster prevention receiver board to one side of the signal line via a pull-up resistor, and in the steady monitoring state where the non-voltage a-contact switch is turned off, most current consumption flows in the signal line. However, the power supply voltage between the signal lines as seen from the disaster prevention reception board 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 as seen from the disaster prevention receiver panel drops to approximately zero volt. A voltage drop is detected and a reception signal indicating the 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 reception panel performs control operations such as fire display, lighting control of response lamps on the terminal side, manual notification section display, output of fire pump activation signal, and remote monitoring. Fire control signals are transmitted to external equipment such as control equipment, television monitoring equipment, variable road information board equipment, tunnel ventilation equipment, and lighting equipment to perform predetermined coping control.

JP-A-2002-246962 JP, 11-128381, A

In such a conventional P-type direct-dispatch tunnel disaster prevention system, insulation deterioration is progressing due to deterioration over time of the signal line (external cable) connecting the terminal equipment, and the signal line connecting the terminal equipment. In the normal monitoring condition, more current than expected flows, and the disaster prevention reception panel determines that the signal has been received by the operation or detection operation of the terminal equipment and performs an alarm operation, and also remote monitoring control equipment, TV monitoring equipment, variable roads. It is often the case that other equipment such as information board equipment, tunnel ventilation equipment, and lighting equipment are interlocked with each other to block tunnels.

In order to solve this problem, a current monitoring device is provided in a housing separate from the disaster prevention reception panel, and the current flowing through the signal line connected to the terminal device provided with the non-voltage a-contact switch is, for example, once a day. Is measured and recorded at a fixed cycle, and when the measured current is out of a predetermined threshold range, an abnormal current value of the signal line is determined and an alarm is issued.

By the way, if a fire alarm signal is output from the fire prevention reception board and a fire alarm is output, or if a fault in the signal line is detected and a fault alarm is output, the fire alarm signal will be output during the subsequent investigation work. There is a case where the fire history or the troubled circuit in which the trouble is detected may be displayed by displaying the measurement history measured by the current monitoring device to check the state of the fired circuit or the troubled circuit.

However, since a current monitoring device is conventionally installed in a separate housing for the disaster prevention reception panel, transmission and processing functions that send fire information and failure information from the disaster prevention reception panel to the current measurement device and store it with the measurement history However, there is also a problem that the equipment configuration and processing become complicated.

In addition, in the conventional disaster prevention reception panel, a tunnel system diagram is placed on the graphic panel located on the front of the housing, and a line indicator light is divided into a manual reporting device and a fire hydrant activation device in the system diagram. When the fire alarm signal is received from the manual alarm device and the fire alarm is output, the line indicator light corresponding to the manual alarm device is turned on to display the fire occurrence area and the fire hydrant is activated. When a pump activation signal is received from the device, the line indicator lamp corresponding to the fire hydrant activation device is turned on to display the section in which the fire hydrant is activated.

In addition to the fire monitoring by the signal line, the disaster prevention reception panel also monitors the signal line for disconnection, and the front panel of the housing displays a representative of the disconnection failure.

However, it takes time and effort to check the signal line in which the disconnection failure has occurred, and there is a problem that it cannot be easily confirmed in which section the signal line is in trouble.

The present invention integrates the function of a current monitoring device into a disaster prevention reception panel to simplify the equipment configuration and processing, and uses a line indicator light provided corresponding to a signal line to prevent a disconnection fault other than a fire. An object of the present invention is to provide a tunnel disaster prevention system capable of easily grasping an abnormal current value or a signal line in which an abnormal current value is occurring and taking necessary measures.

(Tunnel disaster prevention system)
The present invention is
A plurality of terminal devices including a manual notification device and a detector for outputting a fire signal connected to each of a plurality of signal lines drawn out from the disaster prevention reception panel into the tunnel,
A monitoring control unit provided on the disaster prevention reception board, which outputs a fire alarm by receiving a fire signal through a signal line, detects a disconnection fault of the signal line, and outputs a fault alarm,
It is installed in the disaster prevention reception board and measures the current value flowing in multiple signal lines at every predetermined cycle and stores it as a measurement history.When the measured current value is out of the predetermined threshold range, the current value is judged to be abnormal. A current monitoring unit that outputs a current value abnormality alarm, determines the sign of current value abnormality and outputs a sign alarm when the measured current value exceeds a predetermined sign threshold within the threshold range for judging the current value abnormality When,
In a tunnel disaster prevention system equipped with
On the front panel of the disaster prevention reception board, a plurality of line indicator lights provided corresponding to a plurality of signal lines,
An alarm display control unit that activates the line indicator in different display states according to a fire alarm, a failure alarm, a current value abnormality alarm or a current value abnormality warning alarm,
Is provided.

(Alarm identification display by blinking frequency)
The alarm display control unit causes the line indicator lamp to blink or blink at a different frequency according to a fire alarm, a fault alarm, a current value abnormality alarm, or a current value abnormality warning alarm.

(Identification display by blinking cycle)
The alarm display control unit operates the line indicator lights in different display colors according to a fire alarm, a failure alarm, a current value abnormality alarm or a current value abnormality warning alarm.

(Alarm identification display by blinking pattern)
The alarm display control unit causes the line indicator lamp to operate with a different blinking pattern or blinking pattern depending on a fire alarm, a fault alarm, a current value abnormality alarm, or a current value abnormality warning alarm.

(Display of measurement history by monitor device)
Furthermore, a monitor device is installed in the case of the disaster prevention reception board,
When a predetermined measurement history read operation is detected, the current monitoring unit reads the measurement history and displays it on the monitor device.

(Basic effect)
The present invention provides a plurality of terminal devices including a manual notification device and a detector for outputting a fire signal connected to each of a plurality of signal lines drawn out from a disaster prevention reception panel into a tunnel, and a signal provided on the disaster prevention reception panel. A fire prevention signal is output by receiving a fire signal through the line and a fire alarm is detected, and a fault alarm is output by detecting a disconnection fault in the signal line. Measured at each cycle and stored as a measurement history, if the measured current value is outside the specified threshold range, it is judged as abnormal current value and an abnormal current value alarm is output, and the measured current value is abnormal current value. In a tunnel disaster prevention system equipped with a current monitoring unit that determines a sign of a current value abnormality and outputs a sign warning when a specified sign threshold is exceeded within a specified threshold range for judging Multiple line indicators on the front panel for multiple signal lines, and different line indicators depending on the fire alarm, fault alarm, current value abnormality alarm or current value abnormality warning signal. Since a fire alarm, a fault alarm, an abnormal current value alarm or a warning sign of abnormal current value is issued from the disaster prevention reception panel, there are multiple lines provided on the front panel. By observing the display status of the line indicator lamp that is operating in the indicator lamp, in addition to a fire, a disconnection fault, a current value abnormality or a sign of a current value abnormality may occur in the signal line for which terminal device It is possible to easily understand what is happening and it is possible to appropriately take necessary measures.

Further, since the current monitoring unit is provided integrally with the disaster prevention reception panel, the equipment configuration and processing are simpler and the installation space can be reduced compared to the case where the current monitoring device is provided in a separate housing.

(Effect of alarm identification display by blinking frequency)
Further, the alarm display control unit causes the line indicator light to blink or blink at a different frequency according to a fire alarm, a fault alarm, a current value abnormality alarm, or a current value abnormality warning alarm. It is possible to easily understand which of the fire, the disconnection failure, the current value abnormality, or the sign of the current value abnormality has occurred from the difference of the above.

(Display of identification display by blinking cycle)
Further, the alarm display control unit operates the line indicator lights in different display colors according to the fire alarm, the fault alarm, the current value abnormality alarm or the current value abnormality warning alarm. From the difference, it is possible to easily understand which of fire, disconnection failure, current value abnormality, or sign of current value abnormality has occurred.

(Effect of alarm identification display by blinking pattern)
Further, the alarm display control unit operates the line indicator light in a different blinking pattern or blinking pattern depending on the fire alarm, the fault alarm, the current value abnormality alarm or the current value abnormality warning alarm. It is possible to easily comprehend whether a fire, a disconnection failure, a current value abnormality, or a sign of a current value abnormality has occurred from the difference in blinking pattern or blinking pattern frequency.

(Effect of display of measurement history by monitor device)
Further, since the monitor device is arranged in the housing of the disaster prevention reception board and the current monitoring unit reads the measurement history and displays it on the monitor device when a predetermined measurement history read operation is detected, the line on the front panel is displayed. By the display of the indicator lamp, it is possible to know in detail the state of the signal line where the current value abnormality or the sign of the current value abnormality has occurred.

Explanatory diagram showing the outline of the tunnel disaster prevention system Explanatory diagram showing the appearance of the disaster prevention reception board Explanatory drawing showing the state of opening the panel door of the disaster prevention reception board and looking at the monitor device Explanatory drawing showing the graphic panel of FIG. Explanatory view showing the display panel of FIG. 2 taken out Block diagram showing the outline of the functional configuration of the tunnel disaster prevention system Graph showing the sign judgment of current value abnormality by setting the sign threshold range The graph which showed the sign judgment of the current value abnormality by the difference with the average current. Graph showing the sign judgment of the current value abnormality due to the difference from the current value of the previous measurement Time chart showing the operating state of the line indicator that changes the frequency of blinking or blinking according to the alarm type Time chart showing the operating status of the line indicator that changes the blinking or blinking pattern according to the alarm type Explanatory diagram showing the measurement record screen of the monitor device that displays the measurement history of the periodic measurement Explanatory diagram showing the measurement record narrowing screen of the monitor device that displays the measurement history extracted by setting the narrowing condition

[Outline of tunnel disaster prevention system]
FIG. 1 is an explanatory diagram showing an outline of a tunnel disaster prevention system. As shown in FIG. 1, an up tunnel 1a and a down tunnel 1b are constructed as a tunnel for an automobile road, and the up tunnel 1a and the down tunnel 1b are connected by an evacuation contact pit 2.

Inside the ascending line tunnel 1a and the descending line tunnel 1b, fire hydrant devices 18 are installed, for example, at intervals of 50 meters along the wall surface of the observer passage in the longitudinal direction of the tunnel.

The fire hydrant device 18 accommodates a hose with a nozzle in the fire hydrant door, and when a fire occurs, open the fire hydrant door and pull out the hose with a nozzle. The switch 14 is turned on to start the fire pump.

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. As described above, 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 devices, and when the non-voltage a contact switch that functions as a contact means is turned on, a fire hydrant activation signal and a fire are generated. A notification signal is output.

The fire hydrant device 18 is provided with a pump activation switch used by the fire brigade, but since the system is the same switch that outputs the same pump activation signal as the fire hydrant valve opening/closing detection switch 14, It will be described as a fire hydrant valve opening/closing detection switch (including a pump start switch) 14. In addition to the fire hydrant device 18, the manual notification device 16 is also installed in the emergency telephone box, but in the following description, the manual notification device provided in the fire hydrant device 18 will be described as a representative.

In addition to the fire hydrant device 18, a fire detector, an automatic valve device, a duct temperature detector, and the like are provided as tunnel emergency equipment, but they are not shown.

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

The automatic valve device constitutes water spray equipment.The main valve is driven to open by the remote opening control of the electric motor operated valve, and fire extinguishing water is discharged from the multiple water spray heads installed in the longitudinal direction above the tunnel wall surface. Protect the tunnel frame from fire.

The duct temperature detector is located in the duct where the pipes and cables are laid inside the guardian passage in the longitudinal direction of the tunnel.It detects the temperature rise in the duct due to a cable fire, etc. and acts as a contactless means. A temperature detection signal is output when the a-contact switch is turned on.

A disaster prevention reception board 10 is installed at a monitoring center or 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 tunnel 1a and the down tunnel 1b, the disaster prevention receiver board 10 is provided with a current monitoring function of monitoring the current of the P-type signal line connected to the terminal device.

From the disaster prevention reception board 10, P-type signal lines 12-11 to 12-26, 12-21 to 12-26 are provided in each of the uplink tunnel 1a and the downlink tunnel 1b for each predetermined section divided in the tunnel longitudinal direction. The four fire hydrant devices 19 form one compartment, and a plurality of fire hydrant valve opening/closing detection switches 14 and a manual notification device 16 provided for each compartment are connected.

Similarly, for the temperature sensor inside the duct installed in the duct, a P-type signal line is similarly drawn out for each unit, and a plurality of on-ducts and detectors provided for each unit are connected. However, the illustration is omitted. Further, the signal lines 12-11 to 12-26 may be referred to as the signal line 12 when there is no need to distinguish them.

The P-type signal line 12 is composed of a signal line and a common line, and connected to the fire hydrant valve open/close detection switch 14 of the fire hydrant device 18, the manual notification device 16 and the non-voltage a contact switch provided in each of the duct temperature detectors. In this case, the non-voltage a-contact switch is turned on by each operation or detection operation to flow a line current, thereby sending a fire hydrant activation signal, a fire notification signal, and a temperature detection signal to the disaster prevention receiver board 10.

In addition to the fire hydrant device 18, the fire detector and the automatic valve device, the emergency facilities of the tunnel include the fire extinguishing pump equipment 20, the cooling pump equipment 22 for the duct, the IG slave station equipment 24, the ventilation equipment 28, and the alarm display board equipment. 30, a radio rebroadcast facility 32, a television monitoring facility 34, a lighting facility 36, etc. are provided, and except for the point that the IG slave station facility 24 is connected by a data transmission line, the other facilities are disaster-proof by a P-type signal line. It is individually connected to the receiving board 10. Here, the IG slave station facility 24 is a communication facility that connects the disaster prevention reception panel 10 and a remote monitoring control facility 26, which is a higher-level facility provided outside, via the network 25.

The ventilation facility 28 is a facility that gives energy to the air in the tunnel by a high blowing wind speed by the operation of a jet fan installed on the ceiling side in the tunnel, and causes the air flow in the longitudinal direction of the tunnel.

Further, the alarm display board facility 30 is equipment that informs a user in the tunnel of an abnormality in the tunnel by displaying it on an electronic display board. The radio rebroadcast facility 32 is a facility for allowing a driver or the like to receive information from a road administrator in a tunnel. The TV monitoring facility 34 is a facility for confirming the scale and position of a fire, grasping the situation in the tunnel when operating the water spray facility and guiding evacuation. The lighting equipment 36 is equipment for driving and managing the lighting equipment in the tunnel.

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

(Monitor device in front panel and housing)
As shown in FIG. 2, the disaster prevention reception panel 10 has a box-shaped casing 61 that is opened at the front and back, and a panel door 62 that can be opened and closed by operating a handle is provided on the front face of the casing 61. A back door 63 that can be opened and closed by a bundle operation is provided.

On the front side of the panel door 62, there are a graphic panel 44 in which line indicator lights are arranged in a tunnel system diagram, a display panel 55 in which a plurality of representative lights are arranged, and an operation panel 52 in which various operation switches and a telephone are arranged. It is provided.

A monitor device 46 using a liquid crystal display with a touch panel is arranged inside the housing 61. As shown in FIG. 3, when the panel door 62 of the disaster prevention reception board 10 is opened, the monitor device 46 arranged in the support frame 68 appears inside the housing 61, and the current value of the signal line is measured on the screen of the monitor device 46. The measurement history of the current value including the result and the determination result can be displayed.

(Graphic panel)
FIG. 4 is an explanatory view showing the graphic panel of FIG. 2 taken out. As shown in FIG. 4, a fire representative lamp 100 is provided in the upper center of the graphic panel 44, and following the tunnel name under the fire representative lamp 100, a tunnel system diagram, an up line tunnel system diagram 102a and a down line tunnel system diagram 102b. Is drawn.

The upstream tunnel system diagram 102a is divided into three stages of a fire hydrant placement unit 104, a manual notification device placement unit 106, and a fire hydrant activation device placement unit 108. In the fire hydrant placement unit 104, rectangular symbols indicating, for example, fire hydrant devices arranged at intervals of 50 meters in the longitudinal direction of the tunnel are arranged.

The manual reporting device placement unit 106 is divided into 6 sections corresponding to P-type signal lines, and each section is labeled with a section number (corresponding to the line number) of "1 to 6", and A line indicator light 110 is provided in the section. Similarly, the fire hydrant activation device placement unit 108 is also divided into 6 sections corresponding to the P-type signal lines, and each section is given a section number of "1 to 6" and a line display on each section. A lamp 112 is provided. Note that the fire hydrant placement unit 104, the manual notification device placement unit 106, and the fire hydrant activation device placement unit 108 are the same in the downlink tunnel system diagram 102b.

The line indicator lamps 110 and 112 provided on the graphic panel 44 enable the contents of the determination to be understood when a fire, a disconnection failure, a current value abnormality, or a sign of a current value abnormality of the corresponding signal line is determined. Displayed in different display states.

(Display panel)
FIG. 5 is an explanatory view showing the display panel of FIG. 2 taken out. As shown in FIG. 5, various kinds of indicator lights necessary for disaster prevention monitoring are arranged on the display panel 50. In response to the disconnection monitoring function provided on the disaster prevention receiver board 10, a manual notification line disconnection lamp 120 is provided. A hydrant line disconnection lighting 124 is provided. In addition, corresponding to the current monitoring function provided in the disaster prevention monitoring panel 10, the current monitoring device measuring light 124, the current monitoring device failure light 126, the manual reporting current value abnormal lamp 128, the manual reporting current value abnormal sign lamp 130, A fire hydrant current value abnormality lamp 132 and a fire hydrant current value abnormality warning light 134 are provided. These indicators are lit or blinked in a predetermined display color when each event is determined.

[Structure of disaster prevention reception board]
FIG. 6 is a block diagram showing an outline of the functional configuration of the tunnel disaster prevention system. As shown in FIG. 6, the disaster prevention reception board 10 includes a control unit 40, and the control unit 40 has a function realized by executing a program, for example, and various hardware including a CPU, a memory, and an AD conversion port are included as hardware. A computer circuit having an output port or the like is used.

The control unit 40 is provided with a P-type transmission unit 42 in which various terminal devices installed in the tunnel are connected by a P-type signal line 12, and the control unit 40 is provided with a main monitor device 44 and a monitor device. 46, a speaker, a buzzer, an alarm unit 48 including an alarm indicator light, a display unit 50 including various indicator lights, an operation unit 52 including various switches, and further, an IG slave station facility 24, a ventilation facility 28, A P type transmission unit 54 is provided in which the alarm display board facility 30, the radio rebroadcast facility 32, the television monitoring facility 34, the lighting facility 36, the fire pump facility 20 and the cooling pump facility 22 are individually connected by a P type signal line. There is.

The control unit 40 is provided with the functions of the monitoring control unit 56, the current monitoring unit 58, and the alarm display control unit 60 as the functions realized by executing the program.

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

In addition, for example, when the monitoring control unit 56 receives a fire notification signal (fire signal) due to the operation of the manual notification device 16 provided in the fire hydrant device 18, the monitoring unit 56 causes the alarm unit 48 to ring the main sound and the graphic shown in FIG. The fire representative lamp 100 on the panel 44 is blinked to display a fire representative, and the line indicator lamp 110 of the manual notification device placement unit 106 corresponding to the signal line that receives the fire notification signal is turned on to display the manual notification section display. The response signal is transmitted to the fire hydrant device 18 and the response lamp is turned on.

Moreover, when the monitoring control unit 56 receives the fire hydrant activation signal 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, following the reception of the fire notification signal, as shown in FIG. The line indicator lamp 112 of the fire hydrant activation device placement unit 108 corresponding to the signal line that has received the fire hydrant activation signal of the graphic panel 44 shown in FIG.

Further, when the monitoring control unit 56 receives the fire hydrant activation signal output by turning on the fire hydrant valve opening/closing detection switch 14 by opening the fire hydrant valve opening/closing lever provided in the fire hydrant device 18, the fire activating pump equipment 20 starts the pump. It controls to send a signal and activate.

Furthermore, the monitoring control unit 56 transmits the fire notification signal to the distant monitoring control equipment 26 via the IG slave station equipment 24 to issue an alarm as a control for other equipment based on the reception of the fire notification signal, and the television monitoring equipment 34. Control for displaying the fire notification section by the alarm control panel, control for displaying the fire notification of the manual notification section by the alarm display board facility 30, control for ventilating the manual notification section by the ventilation facility 28, control for illuminating the manual notification section by the lighting facility 36, etc. I do.

Further, when the duct internal temperature rises and the duct internal temperature detection signal is received from the duct internal temperature detector, the monitoring control unit 56 outputs a pump start signal to the cooling pump facility 22, and the head installed in the duct outputs the pump activation signal. The water is sprayed to control the inside of the duct.

Further, the monitoring control unit 56 monitors the disconnection failure of the signal line 12, and when detecting the disconnection failure of the signal line to the manual reporting device 16, the alarm unit 48 sounds the failure sound and displays the display shown in FIG. When the manual notification line disconnection lamp 120 of the panel 50 is illuminated in yellow, for example, and a disconnection fault of the signal line 12 to the fire hydrant valve opening/closing detection switch 14 is detected, an alarm sound is emitted by the alarm unit 48 and the display shown in FIG. The fire hydrant line disconnection lamp 122 of the panel 50 is controlled to light yellow, for example.

In the monitoring of the disconnection failure of the signal line 12 by the monitoring control unit 56, a disconnection monitoring current is supplied by connecting a terminating resistor to the end of the signal line 12, and the disconnection failure is detected when the disconnection monitoring current is interrupted.

(Current monitor)
The current monitoring unit 58 measures the current value of the signal line 12 to which the terminal equipment having the non-voltage a contact switch including the fire hydrant valve opening/closing detection switch 14 and the manual notification device 16 is connected, and the measured current value has a predetermined upper limit. When the current value is out of the threshold range determined by the value and the lower limit value, the current value is determined to be abnormal, and the measurement result is stored 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, the detected voltage of the current detection resistor inserted in the signal line 12 is AD-converted and read to remove the influence of noise. Calculate the average value of.

Here, the current value measurement by the current monitoring unit 58 includes fixed cycle measurement, automatic measurement, and manual measurement. The constant-cycle measurement of the current monitoring unit 58 sequentially measures the current values of all the signal lines 12 at a predetermined cycle, for example, once a day, and when the measured current value is out of the predetermined threshold range, the current is measured. A control is performed to determine a value abnormality and store the measurement result in the memory as a measurement history.

In the automatic measurement of the current value by the current monitoring unit 58, when the automatic measurement operation by the monitor device 46 is detected, the current values flowing in all the signal lines 12 are sequentially measured, and the measured current value is out of the predetermined threshold range. If the current value is abnormal, it is determined that the measurement result is displayed on the monitor device 46 on the screen.

In the manual measurement of the current value by the current monitoring unit 58, when the manual measurement operation including the selection of the signal line by the monitor device 46 is detected, the current value flowing through the selected signal line is measured, and the measured current value is predetermined. If the current value is out of the threshold range, the current value is determined to be abnormal, and the measurement result is displayed on the monitor screen.

Further, the current monitoring unit 58, when detecting the measurement history display operation by the monitor device 46, 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 illuminates the current monitoring device measuring lamp 124 in the display panel 50 shown in FIG. 5 in green during the measurement of the fixed period measurement, the automatic measurement or the manual measurement, and also performs the fixed period measurement or the automatic measurement. When a current value abnormality is determined by measurement or manual measurement, control is performed to turn on the manual notification current value abnormality lamp 128 or the hydrant current value abnormality lamp 130 in the display panel 50 shown in FIG. ..

Further, when the current monitoring unit 58 detects an abnormality history display operation by the monitor device 46, the current monitoring unit 58 extracts the measurement history in which the current value abnormality is determined from the measurement history of the current value stored in the memory, and the monitor device 46. Control the screen display in time series.

[Signal warning of current value abnormality by current monitor]
The current monitoring unit 58 provided in the control unit 40 of the disaster prevention receiver board 10 indicates the sign of the current value abnormality when the measured current value exceeds the predetermined sign threshold value within the predetermined threshold value range for judging the current value abnormality. The judgment is made to output a warning sign.

The current value abnormality predictive warning by the current monitoring unit 58 displays the current value abnormality predictive warning as a representative on the screen of the main monitor device 44, and the measurement result as detailed information of the current value abnormal predictive alarm on the screen of the monitor device 46. At the same time, a system indicating an up tunnel or a down tunnel, and device names such as a fire hydrant and a manual notification device that are targets of the warning sign are displayed.

Here, the sign determination of the current value abnormality by the current monitoring unit 58 is, for example, (1) Sign determination of the current value abnormality by setting the sign threshold range,
(2) Judgment of current value abnormality due to difference from average current,
(3) Sign judgment of current value abnormality due to difference from current value of previous measurement,
Therefore, any one or a combination of a plurality of them is used to determine the sign of the abnormal current value and output the sign warning.

(Prediction of current value abnormality by setting warning threshold range)
FIG. 7 is a graph showing the sign determination of the current value abnormality by setting the sign threshold range. FIG. 7 shows, for example, a daily change in the current value of the measurement history obtained by the periodic measurement from the current day (1 day) to 18 days before the current day. For such a current value measurement history, a lower limit value Ith1 and an upper limit value Ith4 for determining a current value abnormality are set, and a current value is within a threshold range Ith1 to Ith4 for determining a current value abnormality. A sign lower limit value Ith2 and a sign upper limit value Ith3 for determining a sign of abnormality are set.

As shown in FIG. 7, the current monitoring unit 58 sets the narrower predictive threshold range Ith2 to Ith3 within the threshold range Ith1 to Ith4 for determining the abnormal current value, and the measured current value Ii is the predictive threshold range. When it deviates from Ith2 to Ith3, that is,
Ith2≧Ii>Ith1 or Ith4>Ii≧Ith3
In the case of, the sign of the current value abnormality is determined and the sign warning is output.

In FIG. 7, the current value Ii measured by the periodic measurement on the current day (first day) has reached the sign upper limit Ith3. Therefore, the current monitoring unit 58 determines the current value of the measured current value. The sign of abnormality is judged and a sign warning is output.

In addition, the current monitoring unit 58, when the sign of the current value abnormality is determined in the fixed cycle measurement, the automatic measurement or the manual measurement, the manual notification current value abnormality sign lamp 132 or the fire hydrant in the display panel 50 shown in FIG. The current value abnormality sign lamp 134 is lit in yellow to perform a representative display control.

(Signal judgment of abnormal current value due to difference from average current)
FIG. 8 is a graph showing the sign determination of the current value abnormality based on the difference from the average current. As shown in FIG. 8, the current monitoring unit 58 obtains the past average current value Ia from the measurement history, and the current value Ii measured by the periodic measurement on the current day (the first day) determines that the current value is abnormal. If the difference ΔI between the measured current value Ii and the average current value Ia exceeds a predetermined sign threshold value ΔIth, the sign of the current value abnormality is determined, provided that it is within the threshold range Ith1 to Ith4. Then, control is performed to output a warning sign.

In FIG. 6, the difference ΔI between the current value Ii and the average current value Ia measured by the periodic measurement on the current day (first day) is equal to or larger than the predictive threshold value ΔIth. Therefore, the current monitoring unit 58 Judges the sign of the current value abnormality in the measured current value and outputs a sign alarm.

(Signal judgment of abnormal current value due to the difference from the current value measured last time)
FIG. 9 is a graph showing the sign determination of the current value abnormality based on the difference from the previously measured current value. As shown in FIG. 9, the current monitoring unit 58 confirms that the current value Ii measured by the constant cycle measurement on the current day (first day) is within the threshold range Ith1 to Ith4 for determining the current value abnormality. As a condition, when the difference ΔI from the previously measured current value Ii−1 exceeds a predetermined sign threshold ΔIth, the sign of the current value abnormality is determined and a sign warning is output. Here, the difference ΔI between the current value Ii measured this time and the current value Ii-1 measured last time obtained by the current monitoring unit 58 indicates the rate of change of the current value. This means that a sign of a current value or more is determined and an alarm is issued when the threshold value is equal to or higher than a predetermined threshold.

(Alarm display controller)
The alarm display control unit 60 provided in the control unit 40 of the disaster prevention reception panel 10 in FIG. 6 uses the line indicator lights 110 and 112 provided in the graphic panel 44 in FIG. Control is performed to operate in different display states depending on the alarm and the current value abnormality alarm and the current value abnormality warning alarm by the current monitoring unit 58.

The control of the line indicator by the alarm display controller 60 is
(1) Alarm identification display by blinking or blinking frequency (2) Alarm identification display by display color,
(3) Alarm identification display by blinking or blinking pattern,
Either

(Alarm identification display by blinking or blinking frequency)
FIG. 10 is a time chart showing the operating state of the line indicator lamp that changes the frequency of blinking or blinking according to the alarm type.

FIG. 10A shows the operation of the line indicator lamp for the fire alarm, and the line indicator lamp is constantly turned on based on the reception of the fire alarm signal.

FIG. 10B shows the operation of the line indicator lamp corresponding to the disconnection failure alarm, which blinks or blinks at a frequency of 1 Hz, which is once every second.

FIG. 10C shows the operation of the line indicator lamp corresponding to the abnormal current value alarm, which blinks or blinks at a frequency of 2 Hz, which is twice a second.

FIG. 10D shows the operation of the line indicator lamp corresponding to the current value abnormality alarm, which blinks or blinks at a frequency of 3 Hz, which is three times per second. The frequency of blinking or blinking is an example, and a combination of frequencies may be used so that it can be appropriately identified as necessary.

(Identification display by display color)
The alarm display unit 60 has different display colors depending on the type of alarm, such as red for a fire alarm, yellow for a fault alarm, orange for an abnormal current value alarm, and purple for a warning sign of an abnormal current value. Control to operate. The combination of display colors can be appropriately determined other than this.

(Alarm identification display by blinking or blinking pattern)
FIG. 11 is a time chart showing the operating state of the line indicator lamp that changes the blinking or blinking pattern according to the alarm type.

FIG. 11A shows the operation of the line indicator lamp for the fire alarm, and the pattern of the line indicator lamp is repeated once for long lighting and three times for short lighting.

FIG. 11B shows the operation of the line indicator lamp corresponding to the disconnection failure alarm, and the pattern of the line indicator lamp being lit once and shortly lit once is repeated.

FIG. 11C shows the operation of the line indicator lamp corresponding to the abnormal current value alarm, and has a pattern in which the line indicator lamp is turned on three times for a short period of time during the rest period.

FIG. 11D shows the operation of the line indicator lamp corresponding to the abnormal current value alarm, and has a pattern in which the line indicator lamp is repeatedly lit for one short period and twice for a short period during the rest period.

Note that these patterns are merely examples, and may be a combination of different blinking patterns or blinking patterns as appropriate.

(Display of measurement record screen by monitor device)
FIG. 12 is an explanatory diagram showing a measurement recording screen of the monitor device displaying the measurement history of the fixed cycle measurement, and taking as an example the case where the current monitoring unit 58 determines the sign of the current value abnormality and outputs the sign alarm. Shows.

As shown in FIG. 12, for example, on the display panel 50 of FIG. 5, the manual notification current value abnormality lamp 128 and the manual notification current value abnormality predictive lighting 130 are illuminated in yellow, and the representative display of the current value abnormality and its predictive warning is performed. In this case, as shown in FIG. 3, when the panel door 62 is opened and a predetermined screen operation is performed on the monitor device 46, the measurement record screen 72 is displayed by reading the measurement history that is measured by the periodic measurement and stored. It

On the right side of the measurement recording screen 72, a page display 73, page switching buttons 74 and 75, a file save button 76, and a memory eject button 77 are arranged.

By operating the page switching buttons 74 and 75, the page of the measurement history detailed information 79 can be switched. The file save button 76 gives an instruction to store the measurement result in the memory. The memory take-out button 77 is operated when taking out the memory storing the current value measurement information from the disaster prevention receiver 10.

The detailed measurement history information 79 displayed in the center of the measurement recording screen 72 is an example of the sign determination of the current value abnormality by the setting of the sign threshold range in (1) above. Here, in line number 002, the measured value is 0.75 mA, and since the sign upper limit value of 0.75 mA is reached, the sign “NG” is displayed in the sign judgment to indicate the sign of the abnormal current value. Has been done.

Further, in the case of the line number 004, the measured value is 1.25 mA and exceeds the abnormal upper limit value of 1.00 mA. Therefore, the abnormality judgment indicates that the current value is abnormal. .. In this case, since the measured value of 1.25 mA exceeds the sign upper limit value of 0.75 mA, the sign of "NG" is naturally displayed in the sign determination.

A line selection button 78 is arranged below the measurement recording screen 72. When the line selection button 78 is operated, the display is switched to the measurement recording narrowing screen 80 shown in FIG.

On the measurement record narrowing screen 80 of FIG. 13, a system selection section 81, a device selection section 82, a section selection section 83, a confirm button 84, a release button 85, a page display 86, page switching buttons 87, 88, and a close button 89 are displayed. It is provided.

The system selection unit 81 selects from the up line and the down line. The device selection unit 82 selects from manual notification, fire hydrant, and duct. The partition selection unit 93 inputs the partition number.

On the measurement record narrowing screen 80, for example, when narrowing down to the measurement record of “section 01 in the manual reporting device for the up line”, as shown in the figure, the system selecting unit 81 displays the “up line” and the device selecting unit 82 displays the “up line”. If “01” is set in the section selection section 83 and the confirm button 84 is operated, the corresponding narrowed measurement record 90 is displayed.

When the release button 85 is operated in this state, the narrowing-down condition and the narrowing-down measurement record 90 are cleared. When the close button 89 is operated, the screen returns to the measurement recording screen 72 of FIG.

By using the function of the measurement record narrowing screen 80 as described above, it is possible to narrow down and display the measurement records by setting narrowing conditions that are a combination of the system, the device, and the section from among the enormous stored measurement records. Therefore, for example, it is possible to efficiently determine the line deterioration status of an appropriate device that has an abnormal current value.

As a condition for narrowing down the measurement record, the period may be selected in addition to the system, device, and section.

[Modification of the present invention]
In the above-described embodiment, the fire alarm, the fault alarm, the current value abnormality alarm, and the current value abnormality predictive alarm are issued, but at least any three of them may be identified.

Further, the present invention includes appropriate modifications that do not impair the object and advantages thereof, and is not limited by the numerical values shown in the above embodiments.

1a: Upline tunnel 1b: Downline tunnel 10: Disaster prevention reception panel 12, 12-1 to 12-n: 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: distant monitoring control equipment 28: ventilation equipment 30: alarm display board equipment 32: radio rebroadcast equipment 34: television monitoring equipment 36: lighting equipment 40: control units 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: Alarm display control unit 61: Housing 62: Panel door 70: Monitor screen 72: Measurement recording screen 80: Measurement recording narrowing screen 100: Fire representative light 102a: Upline tunnel system diagram 102b: Downline tunnel system diagram 104: Fire hydrant placement unit 106: Manual notification device placement unit 108: Fire hydrant activation device placement unit 110 , 112: Line indicator light 120: Manual notification line disconnection light 122: Fire hydrant line disconnection light 124: Current monitoring device measuring light 126: Current monitoring device failure light 128: Manual notification current value abnormal light 130: Manual notification current value abnormal sign Light 132: Fire hydrant current value abnormal light 134: Fire hydrant current value abnormal light

Claims (5)

A plurality of terminal devices including a manual notification device and a detector for outputting a fire notification signal connected to each of a plurality of signal lines drawn out from the disaster prevention reception panel into the tunnel,
A monitoring control unit provided on the disaster prevention receiving panel, which outputs a fire alarm by receiving a fire signal through the signal line and also detects a disconnection fault of the signal line and outputs a fault alarm,
Provided in the disaster prevention reception board, the current value flowing through the plurality of signal lines is measured at predetermined intervals and stored as a measurement history, and when the measured current value is out of a predetermined threshold range, an abnormal current value is detected. A current value abnormality alarm is output by judging, and the sign of the current value abnormality is judged when the measured current value exceeds a predetermined sign threshold value within the predetermined threshold range for judging the current value abnormality. A current monitoring unit that outputs a warning sign,
In a tunnel disaster prevention system equipped with
On the front panel of the disaster prevention reception board, a plurality of line indicator lights provided corresponding to the plurality of signal lines,
An alarm display control unit that operates the line indicator lamp in different display states depending on the fire alarm, the failure alarm, the current value abnormality alarm or the current value abnormality sign warning,
Tunnel disaster prevention system characterized by the provision of
2. The tunnel disaster prevention system according to claim 1, wherein the alarm display control unit changes the line indicator lamp according to the fire alarm, the failure alarm, the current value abnormality alarm, or the current value abnormality warning signal. Tunnel disaster prevention system characterized by blinking or blinking at a frequency.
2. The tunnel disaster prevention system according to claim 1, wherein the alarm display control unit changes the line indicator lamp according to the fire alarm, the failure alarm, the current value abnormality alarm, or the current value abnormality warning signal. A tunnel disaster prevention system that operates in the displayed color.
2. The tunnel disaster prevention system according to claim 1, wherein the alarm display control unit changes the line indicator lamp according to the fire alarm, the failure alarm, the current value abnormality alarm, or the current value abnormality warning signal. A tunnel disaster prevention system characterized by operating in a blinking pattern or a blinking pattern.
In the tunnel disaster prevention system according to claim 1,
Furthermore, a monitor device is arranged in the housing of the disaster prevention reception board,
The tunnel disaster prevention system, wherein the current monitoring unit reads out the measurement history and displays it on the monitor device when a predetermined measurement history reading operation is detected.

Images