JP6577780B2 - Tunnel disaster prevention system - Google Patents

Tunnel disaster prevention system Download PDF

Info

Publication number
JP6577780B2
JP6577780B2 JP2015153017A JP2015153017A JP6577780B2 JP 6577780 B2 JP6577780 B2 JP 6577780B2 JP 2015153017 A JP2015153017 A JP 2015153017A JP 2015153017 A JP2015153017 A JP 2015153017A JP 6577780 B2 JP6577780 B2 JP 6577780B2
Authority
JP
Japan
Prior art keywords
current
current value
line
disaster prevention
predetermined
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
JP2015153017A
Other languages
Japanese (ja)
Other versions
JP2017034489A (en
Inventor
泰周 杉山
泰周 杉山
Original Assignee
ホーチキ株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ホーチキ株式会社 filed Critical ホーチキ株式会社
Priority to JP2015153017A priority Critical patent/JP6577780B2/en
Publication of JP2017034489A publication Critical patent/JP2017034489A/en
Application granted granted Critical
Publication of JP6577780B2 publication Critical patent/JP6577780B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Description

  The present invention relates to a tunnel disaster prevention system in which terminal devices such as a notification device and a detector installed in a tunnel are connected to a disaster prevention receiving board and an abnormality in the tunnel is monitored.
  Conventionally, emergency facilities have been installed in tunnels for exclusive use of automobiles and the like in order to protect people and vehicles from fire accidents that occur in the tunnel.
  Such emergency facilities are equipped with fire detectors, manual notification devices, emergency telephones for fire monitoring and reporting, fire hydrant devices for fire extinguishing and fire prevention, and tunnel enclosures and In order to protect the inside of the duct from fire, a water spray that sprays water for fire extinguishing from the water spray head is installed, and a disaster prevention reception panel that monitors and controls the terminal equipment of these emergency facilities is built to build a tunnel disaster prevention system is doing.
  A tunnel disaster prevention system composed of a disaster prevention receiving board and terminal equipment is roughly divided into an R type transmission system and a P type direct transmission system. The R-type transmission method enables individual management in which a terminal device such as a fire detector having an address set on the transmission line is connected and detection and control are performed for each terminal device by transmission control. In the P-type direct transmission method, a plurality of terminal devices belonging to the same partition are connected to a signal line drawn out in each partition unit according to the type of terminal device, and detection and control are performed in signal line units.
  The R-type transmission disaster prevention system has various advantages in terms of functions and management because it can be individually detected and controlled by a terminal device. On the other hand, the P-type direct-sending tunnel disaster prevention system does not need to have a transmission control function in the fire detector, and it is not necessary to provide a relay amplifier board even if the transmission distance becomes long. In comparison, the system configuration is simple and inexpensive.
  As a tunnel disaster prevention system, considering the merits and demerits of the R type transmission method and the P type direct delivery method, the tunnel length, the traffic volume of the vehicle, etc., the tunnel disaster prevention system of the R type transmission method or the P type direct delivery method will be constructed. I have to.
By the way, in the P-type direct transmission type tunnel disaster prevention system, terminal devices such as a manual notification device, a fire hydrant starting device, a duct temperature detector, etc. are configured with a signal output unit by operation or detection as a no-voltage a contact switch, A no-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 turned off in a monitoring state, and is turned on by an operation or detection operation to output a no-voltage contact signal.
  Specifically, the power supply voltage is applied from the disaster prevention receiver side to one of the signal lines via a pull-up resistor, and in a steady monitoring state in which the no-voltage a contact switch is turned off, current consumption almost flows through the signal line. First, the power supply voltage between the signal lines as seen from the disaster prevention reception board is maintained at substantially the power supply voltage. When the no-voltage a contact switch is turned on, current flows in the signal line, and the voltage between the signal lines as seen from the disaster prevention receiving board decreases to approximately zero volts. The disaster prevention receiving board increases the current consumption of the signal line or between the signal lines. A voltage drop is detected and a reception signal indicating operation or detection of the terminal device is output to the control unit.
  For example, if it is a fire notification signal from a manual notification device, the disaster prevention reception board performs control operations such as fire display, lighting control of the response lamp on the terminal side, manual notification section display, output of fire extinguishing pump start signal, and remote monitoring Fire notification signals are transmitted to external equipment such as control equipment, television monitoring equipment, variable road information board equipment, tunnel ventilation equipment, lighting equipment, etc., so that predetermined countermeasure control is performed.
Japanese Patent Laid-Open No. 2002-246962 JP-A-11-128381
  By the way, in such a conventional P-type direct transmission type tunnel disaster prevention system, the insulation deterioration has progressed due to aged deterioration of the signal line (external cable) connecting the terminal equipment, and the terminal equipment is connected. More current than expected in the normal monitoring state flows through the signal line, and the disaster prevention reception panel determines that the signal is received by the operation or detection operation of the terminal equipment and performs an alarm operation, as well as remote monitoring control equipment, TV monitoring equipment, variable Interlocking other facilities such as road information board equipment, tunnel ventilation equipment, lighting equipment, etc., is often closed.
  In order to solve this problem, the current flowing through the signal line connected to the terminal device provided with the no-voltage a contact switch in the disaster prevention receiver is periodically measured and recorded, for example, once a day, When the measured current exceeds the specified threshold value, the signal line current value abnormality is judged and alarmed, and further, the signal line current value abnormality signal is sent from the disaster prevention reception panel to the remote monitoring and control equipment to alarm. Is considered.
  In this way, when the disaster prevention receiver has a function to measure and record the current value of the signal line and monitor insulation deterioration, even if an alarm is issued due to an abnormal current value, the signal that caused the abnormal current value immediately Do not perform maintenance and management to restore the fault by exchanging the circuit, and plan and respond to the replacement work of the signal line while judging the progress of the insulation deterioration of the signal line by looking at the current measurement record. Thus, it takes a certain period of time to recover from a failure by exchanging signal lines.
  However, when a current value abnormality is determined and an alarm is issued, a current value abnormality is determined each time a current measurement is performed periodically, and alarm output is repeatedly performed at the disaster prevention reception panel and remote monitoring control equipment, It is necessary to deal with the alarm output and there is a problem that hinders the monitoring work of the tunnel.
  Even if a current value abnormality is alarmed by periodically measuring the current of a signal line connected to a terminal device, the present invention continuously records and measures the line current without being bothered by a current value abnormality alarm. The purpose of this project is to provide a tunnel disaster prevention system that can accurately determine the situation.
(Recovery operation for abnormal current value)
The present invention, in the tunnel disaster prevention system for monitoring by connecting a terminal equipment from the disaster prevention receiving board the signal lines drawn in the tunnel,
Disaster prevention receiving plate, to measure the current flowing through the signal line, the measured current value is outside the current abnormality signal determines the current value abnormality if it exceeds or predetermined threshold value is above a predetermined threshold value A line current monitoring means is provided for canceling a warning of an abnormal current value when an alarm is transmitted to the equipment and a predetermined recovery operation is detected by the disaster prevention reception board or external equipment.
The present invention is a tunnel disaster prevention system for monitoring by connecting a terminal device to a signal line drawn into a tunnel from a disaster prevention reception board,
Measure the current value flowing through the signal line on the disaster prevention receiver, and if the measured current value is greater than or equal to the predetermined threshold value or exceeds the predetermined threshold value, it is determined that the current value is abnormal and the current value abnormal signal is A process for canceling the current value abnormality alarm and measuring the current value when a predetermined recovery operation by the disaster prevention reception panel or the external equipment is detected while interrupting the current value measurement by transmitting to the equipment and alarming Line current monitoring means for resuming the operation is provided.
(Change threshold)
The line current monitoring means sets a threshold value for determining a current value abnormality for each line, and when it is determined that the current value is abnormal , the predetermined current threshold value is changed and it is difficult to determine the current value abnormality compared to before the change. To be .
(Mask for current measurement)
Line current monitoring means, when it is determined that the current value abnormality in one of the plurality of signal lines, excluding the signal line is determined with the current value abnormality from the measurement target current value.
(Determination of abnormal current values related to environmental conditions)
The line current monitoring means measures a predetermined environmental condition together with the current value of the signal line, and determines a current value abnormality according to the measured current value of the signal line and the environmental condition.
(Threshold change according to environmental conditions)
The line current monitoring means changes a predetermined threshold value for determining a current value abnormality based on a measurement result of a predetermined environmental condition.
(Change threshold according to temporal changes in environmental conditions)
The line current monitoring means changes a predetermined threshold value for determining a current value abnormality for a predetermined period based on a measurement result of a predetermined environmental condition.
(Change threshold according to season and time of day)
Line current monitoring means, based on the measurement result of the predetermined environmental condition in the time zone of the season or day is changed in accordance with a predetermined threshold and determines a current value abnormality in the time zone of the season or day.
(Change threshold according to high temperature and humidity and low temperature drying)
Line current monitoring means sets in advance a predetermined threshold value as a predetermined reference threshold, and change the reference threshold to a higher threshold than when it is determined that the high temperature and humidity measurement results of a predetermined environmental condition, the predetermined environmental condition When it is determined that the drying is performed at a low temperature from the measurement result , the reference threshold value is changed to a lower threshold value.
(External notification if current value abnormality continues a predetermined number of times)
The line current monitoring means transmits a current value abnormality signal to an external facility for alarm when it is determined that the current value abnormality continues for a predetermined number of times for the same signal line .
(If an abnormal current value appears, shorten the cycle and measure the current value.)
Line current monitoring means measures the current value of the signal line at each predetermined period, if it is determined that the current value abnormal current value measurement of the signal line at predetermined intervals, the current value abnormal determination signal line , each shorter than the predetermined period cycle, and the current value of the signal line.
(Report to upper equipment and stop report)
When it is determined that the current value is abnormal, the line current monitoring means transmits a current value abnormality signal to an external facility to give an alarm, and then cancels the alarm when a predetermined time has elapsed since the notification.
The line current monitoring means sets a predetermined threshold as a predetermined lower threshold lower than a current value normally flowing in the signal line, and the current value measured by the line current monitoring means is equal to or lower than the lower threshold or lower than the lower threshold. In this case, it is determined that the current value is abnormal.
(Effect of current value abnormality recovery operation)
The present invention relates to a tunnel disaster prevention system in which a terminal device including a notification device and a detector is connected to a signal line drawn out from a disaster prevention reception board into a tunnel for monitoring. Measures and records the current value flowing in the connected signal line, and when the measured current value exceeds or exceeds the specified threshold value, it is determined that the current value is abnormal and an alarm is given, and the current value abnormal signal is sent to the external host device. When a recovery operation is detected by the disaster prevention reception board or higher-level equipment, a line current monitoring means is provided to cancel the current value abnormality alarm and restart current value measurement every predetermined period. Even if a current value abnormality occurs and an alarm is issued, the current value can be continuously measured and recorded by performing a recovery operation. Judge trends And properly it can be dealt with.
(Effect of changing threshold)
The line current monitoring means sets the threshold determining a current value faulty circuit unit, when it is determined that the current value anomaly, because you to change the threshold value to not determined that the current value abnormality, once, Even if a current value abnormality occurs and an alarm is issued, for example, by changing the threshold value to a higher value so as not to determine this current value abnormality , the current value is determined until the current value abnormality is determined by the changed threshold value. No abnormal value alarm is issued, current value can be measured and recorded without being bothered by an abnormal current value alarm, and the tendency of insulation deterioration in the signal line is judged from the change in the recorded current value Can be handled appropriately.
(Effects of current measurement mask)
The line current monitoring means, when it is determined that the current value abnormality in one of the plurality of signals lines, for which is adapted to suppress measurement of the current value of the signal line is determined as the current value abnormal current abnormality is determined By excluding the signal line from the measurement target, it is possible to continue the measurement recording of the current value of the other signal line even if the insulation deterioration occurs in the specific signal line.
(Effects of judgment of current value abnormality related to environmental conditions)
Further, the line current monitoring means measures a predetermined environmental condition together with the current value of the signal line, and determines a current value abnormality in relation to the measured environmental condition. One or both of the humidity is measured, and the threshold value for determining the current value abnormality is changed according to either or both of the temperature and humidity. Specifically, the line current monitoring means sets a predetermined reference threshold value. preset order to change the reference threshold to a higher threshold than when it is determined from the temperature and humidity and high temperature and humidity, and to change the reference threshold lower than the threshold value when it is determined that the low-temperature drying temperature and humidity , for example, if the temporary insulation deterioration by environmental conditions such as high temperature and high humidity has occurred, by changing the threshold value in response to changes in environmental conditions, is prevented from being determined that the current abnormalities, unwanted alarm output It makes it possible to deter the deer.
(Effect by changing threshold according to temporal change of environmental conditions)
Also, the line current monitoring means changes the threshold value for determining the current value abnormality temporally based on the environmental condition and the temporal measurement result of the current value, for example, one or both of temperature and humidity and the current value. Based on the temporal measurement results, the threshold for judging abnormal current values was changed temporally, so the logs that result in the measurement of temperature or humidity and current values were checked artificially, for example, high temperature and humidity From June to September, when the current value tends to increase, the threshold value is changed to a high value. Also, the temperature rises in the time zone of the day. For example, the threshold value is raised during the time zone from 10:00 to 18:00. By changing to the threshold value and changing the threshold according to the temporal change of the environmental condition, it is avoided that it is determined that the current value is abnormal, and unnecessary alarm output can be suppressed in advance.
(Effect of higher-level notification when current value abnormality continues for a predetermined number of times)
The line current monitoring means, since so as to alarm by sending a current abnormality signal when it is determined to continue current abnormality and a predetermined number of times to the upper equipment, the temporary signal line by the environmental conditions change, such as even happening insulation degradation, so long as the insulation deterioration does not continue, the current value abnormality signal to be determined that the current value abnormality as the upper equipment eg remote monitor control facilities is not sent, the current abnormalities due to factors transient It is possible to suppress unnecessary warnings.
(Effect of measuring and recording current value by shortening the cycle when an abnormal current value occurs)
The line current monitoring means measures and records the current value of the signal line every predetermined second period shorter than the predetermined period when it is determined that the current value is abnormal by measuring the current value of the signal line every predetermined period. Therefore, for example, when it is determined that the current value is abnormal by measuring the current value once every predetermined cycle once a day, for example, the signal line that is determined to be abnormal in current value by changing to the second cycle shorter than that, for example, every hour It is possible to measure and record the current value at a short time interval to more accurately grasp and deal with the change in the current value due to insulation deterioration.
(Effects of reporting to upper equipment and suspension of reporting)
The line current monitoring means, when it is determined that the current value anomaly, then the alarm by sending a current abnormality signal including the signal line information to the upper equipment, current abnormality when a predetermined time has elapsed from the notification Since the transmission of the signal is stopped and the alarm is released, even if it is determined that the current value of the signal line is abnormal and the alarm is output by the disaster prevention reception board, for example, in a remote monitoring control facility that is an external higher-level equipment, Only a current value abnormality alarm is output only during the time, and it is possible to prevent the current value abnormality alarm state from continuing to interfere with management work.
Explanatory diagram showing an overview of the tunnel disaster prevention system Block diagram showing the outline of the functional configuration of the tunnel disaster prevention system Block diagram showing details of P-type transmission unit Circuit block diagram showing details of current measurement unit Flowchart showing a first embodiment of line current monitoring control for canceling a current value abnormality alarm by a recovery operation The flowchart which showed 2nd Embodiment of the line current monitoring control which cancels | releases the alarm of an electric current value by changing a threshold value Flowchart showing a third embodiment of line current monitoring control for masking current value measurement of a current value abnormal line The flowchart which showed 4th Embodiment of the line current monitoring control which judges current value abnormality by the threshold value according to environmental conditions Flowchart showing a fifth embodiment of line current monitoring control for notifying the higher-level equipment when the current value abnormality exceeds a predetermined number of times. Flowchart showing a sixth embodiment of line current monitoring control for measuring and recording the current value by shortening the measurement cycle when it is determined that the current value is abnormal. Flowchart showing a seventh embodiment of line current monitoring control in which a higher-level equipment is notified and alarmed for a certain period of time when it is determined that the current value is abnormal.
[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-line tunnel 1 a and a down-line tunnel 1 b are constructed as tunnels for an automobile exclusive road, and the up-line tunnel 1 a and the down-line tunnel 1 b are connected by an evacuation connection pit 2.
  Fire detectors 16 are installed inside the upstream tunnel 1a and the downstream tunnel 1b along the wall surface in the longitudinal direction of the tunnel, for example, at intervals of 25 meters or 50 meters. The fire detector 16 sets monitoring areas on both sides, which are 25 meters or 50 meters on the left and right sides, detects a flame due to a fire, and issues a fire.
  In addition, a duct is formed in the inside of the monitoring passage in the longitudinal direction of the tunnel in the upstream tunnel 1a and the downstream tunnel 1b, and piping and cables are laid in the duct. 18 is installed. The duct internal temperature detector 18 detects a temperature rise in the duct due to a cable fire or the like, and outputs a temperature detection signal when the no-voltage a contact switch functioning as a contact means is turned on.
  In addition, fire hydrant devices 20 and automatic valve devices 22 are installed at intervals of, for example, 50 meters along the wall surface of the supervisor passage in the longitudinal direction of the tunnel inside the upstream tunnel 1a and the downstream tunnel 1b.
  The fire hydrant device 20 houses a hose with a nozzle inside the fire hydrant door. In the event of a fire, the fire hydrant door is opened, the hose with the nozzle is pulled out, and the fire hydrant valve opening / closing lever is opened to discharge the water for fire extinguishing. Switch on and start fire pump. Moreover, the fire hydrant device 20 is provided with a fire extinguisher door, in which the fire extinguisher is housed.
  Further, the fire hydrant device 20 is provided with a water hydrant used by the fire brigade, and is provided with a pump start switch operated by the fire brigade. Furthermore, the fire hydrant device 20 is provided with a notification device door, and the notification device door is provided with a manual notification device (transmitter). For this reason, the fire hydrant device 20 includes a transmitter, a fire hydrant valve opening / closing detection switch, and a pump start switch as terminal devices, and a fire notification signal, a fire hydrant detection signal or Output pump start signal.
  In addition, since the fire hydrant valve opening / closing detection switch and the pump start switch are the same switch in terms of system that outputs the same pump start signal, the following description will be given as a fire hydrant valve opening / closing detection switch (including a pump start switch). There is. Moreover, although the manual notification apparatus is installed in the emergency telephone box in addition to the fire hydrant apparatus 20, in the following description, the manual notification apparatus provided in the fire hydrant apparatus 20 will be described as a representative.
  The automatic valve device 22 constitutes a water spray facility. The main valve is driven to open by remote opening control of the motor-operated valve for operation, and water for fire extinguishing is discharged from a plurality of water spray heads installed in the longitudinal direction of the upper part of the tunnel wall surface. To protect the tunnel housing from fire. For this reason, the automatic valve device 22 includes a motor-operated valve for operation as a terminal device.
  In order to monitor the abnormalities in the tunnel by connecting terminal equipment such as the fire detector 16, duct temperature detector 18, fire hydrant device 20, and automatic valve device 22 installed in the tunnel, disaster prevention in the monitoring center etc. A receiving board 10 is installed.
The up line tunnel 1a and southbound tunnel 1b from disaster receiving plate 10, a plurality of pull the P-type signal line 12 of each predefined block divided into the tunnel longitudinal direction, the fire detectors 16 installed in the tunnel Connected.
In addition, a plurality of P-type signal lines 12 are drawn from the disaster prevention receiving board 10 into the upstream tunnel 1a and the downstream tunnel 1b, divided into sections in which the tunnel is divided in the longitudinal direction and the types of terminal equipment. As a terminal device other than the fire detector 16, a terminal device such as a manual notification device provided in the fire hydrant device 20, a fire hydrant valve opening / closing detection switch (including a pump activation switch), a duct temperature detector 18, and the like are connected.
  The P-type signal line 12 is composed of a signal line and a common line, and is a non-voltage a contact provided in each of the manual notification device of the fire hydrant device 20, the fire hydrant valve opening / closing detection switch, the pump start switch, and the temperature detector 18 in the duct. When a switch is connected, a fire notification signal, a pump activation signal, and a temperature detection signal are sent to the disaster prevention receiving panel 10 by turning on the no-voltage a contact switch and flowing the line current by each operation or detection operation. ing.
In addition to the fire detector 16, the fire hydrant device 20, and the automatic valve device 22, the emergency facilities for the tunnel include a fire pump facility 24, a cooling pump facility 25 for the duct, an IG slave station facility 26, a ventilation facility 28, and an alarm display. plate equipment 30, radio rebroadcast equipment 32, provided with a TV monitor equipment 34 and the lighting equipment 36, etc., except for connecting the IG slave station equipment 26 in the data transmission line, and the other equipment P-type signal line 12 is individually connected to the disaster prevention receiving board 10. Here, the IG slave station facility 26 is a communication facility that connects the disaster prevention receiving board 10 and a remote monitoring control facility 27 that is a higher-level facility provided outside via a network.
The ventilation facility 28 is a facility that gives energy to the air in the tunnel by a high blown air speed by the operation of a jet fan installed on the ceiling side in the tunnel and causes a flow of ventilation in the tunnel longitudinal direction.
  The alarm display board facility 30 is a facility for informing the user in the tunnel of the abnormality in the tunnel by displaying it on the electric display board. The radio rebroadcasting facility 32 is a facility that enables a driver or the like to receive information from a road manager in the tunnel. The television monitoring facility 34 is a facility for confirming the scale and position of the fire, grasping the situation in the tunnel when the water spray facility is operated, and evacuation guidance is performed. The lighting equipment 36 is equipment for driving and managing lighting equipment in the tunnel.
[Configuration of disaster prevention receiver]
FIG. 2 is a block diagram showing an outline of the functional configuration of the tunnel disaster prevention system. As shown in FIG. 2, the disaster prevention reception board 10 includes a control unit 40. The control unit 40 is a function realized by executing a program, for example, and various input devices including a CPU, a memory, and an AD conversion port as hardware. A computer circuit having an output port or the like is used.
For the control unit 40, a P-type transmission unit 42 in which various terminal devices installed in the tunnel are connected by the P-type signal line 12 is provided, and for the control unit 40, a speaker, a buzzer, an alarm indicator lamp, etc. Provided with an alarm unit 44, a display unit 46 provided with a liquid crystal display, etc., and an operation unit 48 provided with various switches. Further , ventilation equipment 28, alarm display board equipment 30, radio rebroadcast equipment 32, television monitoring equipment 34 In addition, a P-type transmission unit 52 in which the lighting equipment 36, the fire pump equipment 24, and the cooling pump equipment 25 are individually connected by the P-type signal line 12 is provided.
  The control unit 40 is provided with a monitoring control unit 70 and a line current monitoring unit 72 as functions realized by executing the program. The monitoring control means 70 performs predetermined monitoring control based on detection signals and operation signals from terminal devices such as the fire detector 16, the duct temperature detector 18, the fire hydrant device 20, and the automatic valve device 22 installed in the tunnel. .
  For example, when the fire control signal is received by the operation of the manual notification device provided in the fire hydrant device 20, the monitoring control means 70 performs the main sound by the alarm unit 44 and displays the fire display and the manual notification zone on the display unit 46. In addition, a response signal is transmitted to the fire hydrant device 20 to turn on the response lamp, and a pump start signal is output to the fire pump facility 24 to start the fire pump. Furthermore, the monitoring control means 70 controls the other equipment as a control for transmitting a fire notification signal to the remote monitoring control equipment 27 via the IG slave station equipment 26 to give an alarm, and a control for displaying the fire notification section by the TV monitoring equipment 34. Control for displaying a fire report in the manual report section by the alarm display board equipment 30, control for ventilating the manual report section by the ventilation equipment 28, control for lighting the manual report section by the lighting equipment 36, and the like.
Further, when the temperature in the duct rises and the monitoring control means 70 receives a temperature detection signal from the duct temperature detector 18, the monitoring control means 70 outputs a pump activation signal to the cooling pump equipment 25 and sprinkles water from the head installed in the duct. And control to cool the inside of the duct.
The line current monitoring means 72 predetermines the current value of the signal line 12 to which a terminal device having a no-voltage a contact switch including a manual notification device, a fire hydrant valve opening / closing detection switch, a pump start switch, and a duct internal temperature detector 18 is connected. Measured every cycle, for example, once a day and stored in the memory, and when the measured current value exceeds the predetermined threshold or exceeds the predetermined threshold, it is determined that the current value is abnormal and an alarm is given. Control is performed to send a signal to a remote monitoring control facility 27 that is an external higher-level facility via the IG slave station facility 26 to give an alarm.
  Further, the line current monitoring means 72 determines the current value when the notification signal of the restoration operation by the operation unit 48 or the restoration operation by the remote monitoring control facility is detected in the state in which the abnormality of the current value of the signal line 12 is determined and alarmed. Control is performed to cancel the alarm due to abnormality and restart current value measurement at predetermined intervals. This control is the first embodiment of the line current monitoring control by the line current monitoring means 72, which will be clarified later.
[P-type transmission unit]
FIG. 3 is a block diagram showing details of the P-type transmission unit provided in the disaster prevention receiver. As shown in FIG. 3, the P-type transmission unit 42 is provided with a plurality of partition modules 60 corresponding to the sections of the terminal equipment installed in the tunnel. For example, the tunnel corresponding to the first partition module 60 is provided. In the inner compartment, a plurality of fire hydrant devices 20 and duct internal temperature detectors 18 shown on the right side thereof are arranged.
  The fire hydrant device 20 is provided with a manual notification device (transmitter) 54, a fire hydrant valve opening / closing detection switch 56, and a pump activation switch 58 as terminal devices provided with a non-voltage a contact switch.
The section module 60 is provided with a line receiving unit 62a corresponding to the manual notification device 54, and a line receiving unit 62b is provided corresponding to the fire hydrant valve opening / closing detection switch 56 and the pump activation switch 58. Correspondingly, a line receiver 62c is provided.
  A plurality of manual notification devices 54 provided in the plurality of fire hydrant devices 20 are connected in parallel to the signal line 12a drawn from the line receiving unit 62a. For this reason, when the no-voltage a contact switch is turned on by operating one of the push buttons of a plurality of manual notification devices 54 belonging to the same section, the line receiver 62a receives the fire notification signal by the line current flowing, and identifies the section. The fire notification signal is output to the control unit 40.
  In addition, a plurality of fire hydrant valve opening / closing detection switches 56 and pump activation switches 58 provided in the plurality of fire hydrant apparatuses 20 are connected in parallel to the signal line 12b drawn from the line receiver 62b. Here, the fire hydrant valve opening / closing detection switch 56 and the pump start switch 58 output a pump start signal based on an operation related to a fire and are the same type because they are common as a pump start operation means. Therefore, the same type of terminal device is connected in parallel to the same signal line 12b.
  For this reason, when the user pulls out the hose with a nozzle of the fire hydrant device 20 and operates the fire hydrant valve opening / closing lever, the fire hydrant valve opening / closing detection switch 56 is turned on and the line current flows, so that the line receiver 62b sends a pump start signal. The pump starting signal which received and specified the division is output to the control part 40. Also, when the fire brigade opens the fire hydrant device 20 door, connects the fire hose to the water tap, and turns on the pump start switch 58, the line receiver 62b receives the pump start signal because the line current flows. Then, the pump activation signal specifying the section is output to the control unit 40.
Further, the in-duct temperature detector 18 provided in the same section is connected in parallel to the signal line 12c drawn from the line receiving unit 62c. For this reason, when the temperature detected in the duct exceeds a predetermined threshold temperature by any one of the plurality of duct temperature sensors 18 belonging to the same section, the no-voltage a contact switch is turned on, and the line current flows. The receiving unit 62c receives the temperature detection signal and outputs a duct fire detection signal specifying the section to the control unit 40.
Current measuring units 64 a to 64 c are provided for the line receiving units 62 a to 62 c provided in the partition module 60. The current measuring units 64 a to 64 c input a current value detection signal obtained by detecting the current value flowing through each of the signal lines 12 a to 12 c to the selector unit 65. The selector 65 receives a control signal at a predetermined measurement timing to be once every day by the line current monitoring means 72 provided in the control unit 40 of FIG. 2, corresponding to the signal lines that are input to the compartment module 60 The current value detection signal is sequentially selected and output to the AD conversion port of the control unit 40, and the line current monitoring means 72 converts the analog current value input to the AD conversion port into a digital current value, reads it, and stores it in the memory. Thus, the current value of each signal line is periodically measured and recorded.
  FIG. 4 is a circuit block diagram showing details of the current measuring unit provided in the P-type transmission unit of FIG. 3, and shows one signal line as an example. As shown in FIG. 4, a no-voltage a contact switch 68 and a termination resistor 15 provided in the terminal device 14 are connected in parallel to the signal line 12 including the signal line L and the common line C drawn from the disaster prevention receiving board 10. In the normal monitoring state, the no-voltage a contact switch 68 is turned off as shown in the figure.
The signal line L of the signal line 12 is pull-up connected to the power supply line of the power supply voltage + Vc by the resistor 66, and the common line C is grounded. Therefore, in the steady monitoring state where the no-voltage a contact switch 68 of the terminal device 14 is off, the line voltage VL between the signal line L and the common line C of the signal line 12 is the power supply voltage + Vc. The voltage VL is input to the line receiver 62.
  When any non-voltage a contact switch 68 of the terminal device 14 connected to the signal line 12 is turned on, the line voltage VL between the signal line L and the common line C is reduced to substantially zero volts. The line receiving unit 62 is provided with a switching circuit that is turned on when the line voltage VL decreases to near zero volts, and outputs a received signal to the control unit 40 when the switching circuit is turned on.
The current measuring unit 64 is a circuit that detects the line voltage VL between the signal line L and the common line C pulled up to the power supply line by the resistor 66 as a current detection signal VL. When the value is Rs and the insulation resistance of the signal line 12 is Z, the current I flowing through the signal line 12 when the no-voltage a-contact switch 68 is OFF is expressed by the following equation.
  Where (RS // Z) is the parallel resistance value
Represents.
Therefore the current detection signal (the line voltage) VL is
Thus, a current detection signal (line voltage) VL that increases in proportion to the line current I is obtained.
When the insulation deterioration of the signal line 12 occurs, the insulation resistance Z decreases, thereby increasing the current I flowing through the signal line 12 and increasing the current detection signal (line voltage) VL .
The line voltage (current detection signal) VL detected by the current measurement unit 64 is input to the selector unit 65, sequentially read from the selector unit 65 together with other current detection signals at a predetermined measurement timing, and read from the AD conversion port. Based on the detected current value VL, the line current monitoring means 72 of the control unit 40
I = (Vc−VL) / R (Formula 3)
As a result, the current value I is obtained and recorded, and compared with a predetermined threshold value, it is determined that the current value is abnormal due to signal line insulation deterioration, and an alarm is issued.
As another embodiment of the current measuring unit 64, a current detection resistor is inserted and connected to the signal line L side following the pull-up connection point by the resistor 66, and a current detection voltage generated at both ends of the current detection resistor proportional to the current. To the selector unit 65, sequentially read from the selector unit 65 together with other current detection signals at a predetermined measurement timing, and read and recorded as a current detection value from the AD conversion port by the line current monitoring means 72 of the control unit 40. The current value abnormality due to the insulation deterioration of the signal line may be determined and alarmed as compared with a predetermined threshold value .
FIG. 5 is a flowchart showing a first embodiment of line current monitoring control for canceling a current value abnormality alarm by a recovery operation. As described above, the first embodiment of the line current monitoring control by the line current monitoring means 72 provided in the control unit 40 of FIG. 27 to send an alarm, and when a recovery operation by the disaster prevention receiving board 10 or the remote monitoring control equipment 27 is detected during the alarm, the alarm state due to the current value abnormality is canceled and the current value measurement at a predetermined cycle is resumed. It is characterized by doing so.
  As shown in FIG. 5, when the line current monitoring means 72 determines in step S1 that the line current measurement timing reaches a predetermined time, for example, once a day, the process proceeds to step S2 where the line number N is set to N = 1. In step S3, the current value of the first signal line determined by N = 1 under the control of the selector unit 65 shown in FIG. 3 is measured and recorded in the memory.
Subsequently, it is determined whether or not the current value measured in step S4 is equal to or greater than a predetermined threshold value (or whether or not the threshold value is exceeded). If it is determined that the current value is equal to or greater than the predetermined threshold value, the process proceeds to step S5. It is determined that the current value is abnormal due to insulation deterioration of the signal line, and an acoustic alarm is displayed by the alarm unit 44 of the disaster prevention reception board 10 and an alarm is displayed by the display unit 46. Further, the process proceeds to step S7, An abnormal current value signal is transmitted to the remote monitoring and control equipment 27 to alert. If the current value is less than the threshold value in step S4, the processes in steps S5 to S7 are skipped.
  Subsequently, until the line number N reaches the maximum value Nmax, the line number N is incremented by 1 in step S9 and the processing from step S3 is repeated. When the current value measurement record of all the signal lines and the determination of the current value abnormality are completed, the process proceeds to step S10. At the present time, it is determined whether or not the current value abnormality is being alarmed. If the alarm is being determined, the process proceeds to step S11. It is determined whether or not there is a direct abnormality recovery operation by the disaster prevention receiving board 10 or a remote abnormality recovery operation by the remote monitoring control equipment 27.
If it is determined in step S11 that the abnormality recovery operation is performed directly or remotely, the process proceeds to step S12, the current value abnormality alarm is recovered, the alarm state is canceled, and the process returns to step S1 to wait for the next line current measurement timing.
  According to the first embodiment of such line current monitoring control, even if a current value abnormality occurs and an alarm is issued, the recovery operation is performed by the disaster prevention receiving board 10 or the remote monitoring control equipment 27. The alarm state is released and the current value can be continuously measured and recorded, and the tendency of the insulation deterioration of the signal line can be judged from the change in the recorded current value, so that it can be appropriately dealt with.
[Second Embodiment of Line Current Monitoring Control]
FIG. 6 is a flowchart showing a second embodiment of line current monitoring control for canceling a current value abnormality alarm by changing a threshold value. In the second embodiment of the line current monitoring control by the line current monitoring means 72 of FIG. 2, a threshold value for determining a current value abnormality is set for each line, and when it is determined that the current value is abnormal , the current value abnormality is not determined. Thus, the threshold value is changed as described above.
As shown in FIG. 6, the process of step S 21 ~S32 by line current monitoring means 72 is explained because it is the same as the steps S1~S12 in FIG. 5 is omitted.
The line current monitoring unit 72 proceeds to step S32 when the abnormality recovery operation by the direct or remote operation is discriminated in step S31, recovers the alarm of the current value abnormality and cancels the alarm state, and then proceeds to step S33 to detect the current value abnormality. the threshold value is set to the determined signal line reads and displays on the display unit 46 and the current threshold at the operation unit step S35 when determining threshold value changing operation by the 48 in step S34 so as not to determine the current value abnormality change.
  This change in threshold value changes the current threshold value to a larger threshold value. The change to increase the threshold value may be performed by adding a predetermined threshold increase value to the current threshold value or multiplying by one or more predetermined coefficients. However, an upper limit is determined for the increase in threshold value, and no further increase is made.
  Subsequently, the process from step S33 is repeated until the threshold value changing process is performed for all signal lines with abnormal current values in step S36. When this process is completed, the process returns to step S21 to wait for the next line current measurement timing.
  According to the second embodiment of such line current monitoring control, for example, even if a current value abnormality occurs and an alarm is issued, the threshold value is changed to a higher value, for example, so as not to determine this current value abnormality. Thus, the current value abnormality alarm is not issued until the current value abnormality is determined by the changed threshold value, and the current value can be continuously measured and recorded without being bothered by the current value abnormality alarm. It is possible to determine the tendency of insulation deterioration in the signal line from the change in the recorded current value and to cope with it appropriately.
[Third embodiment of line current monitoring control]
FIG. 7 is a flowchart showing a third embodiment of the line current monitoring control for masking the current value measurement of the line having an abnormal current value. In the third embodiment of the line current monitoring control by the line current monitoring means 72 of FIG. 2, when a current value abnormality is determined in any of a plurality of signal lines, the current value of the signal line determined as a current value abnormality is measured. It is characterized by performing a masking process to suppress.
  As shown in FIG. 7, the processing of steps S41, S42 and S44 to S53 by the line current monitoring means 72 is the same as the processing of steps S1 to S12 of FIG. 5, and the processing of step S43 is newly added.
Line current monitoring means 72, in step S43, and determines whether the signal line is determined as the current value abnormality in the processing up to the previous, in the case of the signal line which is not determined that the current value abnormality steps S44~S48 By processing, the current value of the signal line is measured and recorded, and the measured current value is compared with a threshold value to determine whether or not there is an abnormality in the current value. If it is determined that the current value is abnormal , the disaster prevention receiving board 10 and the remote monitoring control The equipment 27 outputs an alarm for an abnormal current value.
On the other hand, when a signal line that has been determined to have an abnormal current value is determined in step S43, the process of steps S44 to S48 is skipped, so that the current value is not measured and recorded for that signal line, and the current value is determined to be abnormal. The signal line is masked to be excluded from monitoring.
According to the third embodiment of such a line current monitor control, by excluding the signal line is determined to a current value abnormal from the measurement object, even happening insulation deterioration on the particular signal channel, the other signal channel Can continue to record current values.
[Fourth Embodiment of Line Current Monitoring Control]
FIG. 8 is a flowchart showing a fourth embodiment of line current monitoring control for determining a current value abnormality based on a threshold value according to environmental conditions. In the fourth embodiment of the line current monitoring control by the line current monitoring means 72 of FIG. 2, a predetermined environmental condition such as temperature and humidity is measured together with the current value of the signal line, and an abnormal current value is determined according to the temperature and humidity. The threshold value to be changed is changed.
For example, a predetermined reference threshold value is set in advance and the reference threshold value is changed to a higher threshold value when it is determined that the temperature and humidity are high and humid. If the humidity is determined to be low temperature drying, the reference threshold is changed to a lower threshold.
  As shown in FIG. 8, when the line current monitoring means 72 determines that the predetermined line current measurement timing has been reached in step S61, the line current monitoring means 72 proceeds to step S62 and measures the temperature with the temperature detector installed in the tunnel and the humidity. Measure humidity with a detector and capture.
Then, it progresses to step S63 and the threshold value which determines an electric current value abnormality is changed according to the temperature and humidity which were measured and taken in by step S62. This threshold value change is likely to cause insulation degradation of the signal line 12 in an environmental condition that is hot and humid in the summer as an environmental condition. Therefore, the reference threshold value is changed to a higher threshold value, and temporary insulation caused by the environmental condition is performed. possible so as not to alarm determines that the current value abnormality due to deterioration.
  Subsequently, the processes of steps S64 to S74 are performed. Since this process is the same as steps S2 to S12 of FIG. 5, the description thereof is omitted.
As a modification of the fourth embodiment of the line current monitoring control in which the threshold value is changed according to the environmental conditions, the line current monitoring means 72 uses a current value abnormality based on the environmental conditions and the temporal measurement result of the current value. You may make it change the threshold value which determines this with time.
  In this case, the line current monitoring means 72 artificially confirms, for example, a log that is a measurement result of temperature or humidity and current value, and the current value tends to increase due to high temperature and humidity, for example, from June to September. Changes the reference threshold value to a high threshold value, and changes the reference threshold value to a high threshold value in the time zone from 10:00 to 18:00, for example, when the temperature rises in the time zone of the day. By changing the threshold value according to the change, it is possible to avoid the determination of an abnormal current value and to suppress unnecessary alarm output in advance.
  Here, the change of the threshold corresponding to the temporal change of the environmental condition is automatically stored according to the passage of time by storing in advance the threshold that changes temporally according to the season or the time zone of the day. Alternatively, the threshold value may be changed and set manually, or the threshold value may be changed with time by a manual operation.
[Fifth Embodiment of Line Current Monitoring Control]
FIG. 9 is a flowchart showing a fifth embodiment of line current monitoring control for notifying a higher-level facility when a current value abnormality exceeds a predetermined number of times. Fifth Embodiment of the line current monitoring control by the line current monitoring means 72 in FIG. 2 causes the alarm by sending a current abnormality signal to the upper equipment when determining the current value signal abnormality line a predetermined number of times continuously for It is characterized by that.
As shown in FIG. 9, it explained by the process of step S81~S 86 by line current monitoring means 72 is the same as the steps Sl to S 6 in FIG. 5 will be omitted.
  When the current value measurement record and current value abnormality determination are performed by the processing of S81 to S87 and the process proceeds to step S89, whether or not the current value abnormality determination continues for the same signal line more than a predetermined number of times. If the number of continuations is less than the predetermined number, step S90 is skipped and the current value abnormality signal is not transmitted to the remote monitoring and control facility 27, and the current value abnormality has continued for a predetermined number of times or more in step S89. If it discriminate | determines, it will progress to step S90 and will notify the remote monitoring control equipment 27 by transmission of an electric current value abnormal signal for the first time at this stage, and will be alarmed.
  Subsequent steps S91 to S93 are the same as steps S10 to S12 in FIG.
According to the fifth embodiment of such line current monitoring control, even if a temporary signal line insulation deterioration occurs due to a change in environmental conditions or the like, even if the insulation deterioration does not continue, it is determined that the current value is abnormal. An abnormal current value signal is not transmitted to the distant monitoring control equipment 27 and the like, and it is possible to suppress an unnecessary alarm for an abnormal current value due to a temporary factor.
[Sixth embodiment of line current monitoring control]
FIG. 10 is a flowchart showing a sixth embodiment of line current monitoring control for notifying a higher-level facility when a current value abnormality exceeds a predetermined number of times. The sixth embodiment of the line current monitoring control by the line current monitoring means 72 of FIG. 2 is characterized in that when it is determined that the current value is abnormal , the current value is measured and recorded by shortening the measurement cycle.
  As shown in FIG. 10, when the line current monitoring means 72 determines in step S101 that the first timing of the line current measurement at a predetermined time, for example, once a day is reached, the line number N is set to N = N in step S102. The process is initially set to 1 and then the processes of steps S103 to S109 are performed. Since this process is the same as the processes of steps S3 to S9 of FIG.
Subsequently, the line current monitoring unit 72 proceeds to step S111 if there is a signal line with an abnormal current value in step S110 based on the current value measurement of the signal line 12 and the determination result of the abnormal current value. It is determined whether or not it is the first measurement timing once a day. If not, the process proceeds to step S112 to determine whether or not the second measurement timing is shorter than the first measurement timing cycle, for example, once every hour. If it is determined that the measurement timing has been reached, the process proceeds to step S113, where the current value of the signal line for which the current value abnormality is determined is measured and recorded, and the measurement of the signal line for which all current value abnormality has been determined in step S114 is completed. Until the process of step S113 is repeated.
  Subsequently, the processing of steps S115 and S116 is performed, which is the same as steps S11 and S12 of FIG.
According to the sixth embodiment of such line current monitoring control, for example, when it is determined that the current value is abnormal in the current value measurement every predetermined cycle once a day, by changing to a shorter second cycle, It is possible to measure and record the current value of the signal line for which the current value abnormality has been determined at short time intervals, and to more accurately grasp and deal with the change in the current value due to insulation deterioration.
[Seventh Embodiment of Line Current Monitoring Control]
FIG. 11 is a flowchart showing a seventh embodiment of line current monitoring control in which a higher-level facility is notified and alarmed for a predetermined time when it is determined that the current value is abnormal. In the seventh embodiment of the line current monitoring control by the line current monitoring means 72 of FIG. 11, when it is determined that the signal line current value is abnormal, the current value abnormality signal including the signal line information is transmitted to the remote monitoring control equipment 27. When the predetermined time has elapsed, the transmission of the current value abnormality signal is stopped, and the alarm of the current value abnormality in the remote monitoring control equipment 27 is released.
As shown in FIG. 11, the processing of step S121~S 126 by line current monitoring means 72 becomes the processing basically the same as steps Sl to S 6 in FIG. 5, FIG corresponding to step S6 in FIG. 5 11 In the process of step S126, the current value abnormality alarm is issued in the disaster prevention receiving panel 10, but at this stage, the current value abnormality signal is not transmitted to the remote monitoring control equipment 27 and the current value abnormality alarm is not issued. It is different in point.
  The remote monitoring control facility 27 proceeds to step S129 after the processing of steps S121 to S128 is completed. If there is a signal line with an abnormal current value, the remote monitoring control facility 27 transmits an abnormal current value signal including line information to the remote monitoring control facility 27 in step S130. Is transmitted, and the remote monitoring control facility 27 outputs an alarm for abnormality in the current value including the line information.
  Subsequently, when it is determined in step S131 that the predetermined time that can be dealt with in response to the current value abnormality alarm is determined on the remote monitoring control facility 27 side, the process proceeds to step S132, and transmission of the current value abnormality signal to the remote monitoring control facility 27 is stopped. Release the alarm output.
  Subsequently, the processes of steps S133 and S134 are performed, which are the same as steps S11 and S12 of FIG.
According to the seventh embodiment of such line current monitoring control, even if it is determined that the current value is abnormal for the signal line in the disaster prevention receiving board 10 and an alarm is output, for example, the remote monitoring control equipment 27 that becomes an external higher-level equipment In this case, an alarm for abnormal current value is only output for a predetermined time, and the alarm status of the abnormal current value continues to hinder the management work in the remote monitoring and control facility 27 that centrally monitors a plurality of tunnels. It is possible to avoid coming.
[Modification of the present invention]
(Terminal equipment)
In the above embodiment, as a terminal device connected to a signal line for measuring and monitoring a current value due to insulation deterioration, a manual notification device, a fire hydrant valve opening / closing detection switch, a pump start switch, and a temperature detector in a duct are taken as examples. As long as it is a terminal device connecting the no-voltage a contact switch to the signal line from the disaster prevention receiving board, other appropriate terminal devices are included.
(Monitoring of signal line disconnection)
In the above embodiment, when the measured current value of the signal line exceeds the predetermined threshold value or exceeds the upper limit threshold value due to insulation deterioration, it is determined that the current value is abnormal. A predetermined lower limit threshold value may be set for the current consumption, and when the measured current value is equal to or lower than the lower limit threshold value or lower than the lower limit threshold value, it may be determined that the current value is abnormal and an alarm is issued. In this way, an abnormal current value that is below or below the lower limit threshold value will detect and alarm the disconnection failure of the signal line.
(Other)
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.
DESCRIPTION OF SYMBOLS 1a: Up line tunnel 1b: Down line tunnel 10: Disaster prevention receiving board 12: Signal line 14: Terminal equipment 16: Fire detector 18: Duct temperature detector 20: Fire hydrant device 22: Automatic valve device 24: Fire pump equipment 25 : Cooling pump equipment 26: IG slave station equipment 27: Remote 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 and 52: P Type transmission unit 44: alarm unit 46: display unit 48: operation unit 54: manual notification device 56: fire hydrant valve opening / closing detection switch 58: pump start switch 60: partition module 62: line receiving unit 64: current measuring unit 65: selector unit 68: No-voltage a contact switch 70: Monitoring control means 72: Line current monitoring means

Claims (13)

  1. In tunnel disaster prevention system for monitoring by connecting a terminal equipment from the disaster prevention receiving board the signal lines drawn in the tunnel,
    The disaster prevention receiving panel, the signal measured value of the current flowing through the line, the measured current value is determined as the current value abnormality when exceeded or the predetermined threshold value is above a predetermined threshold current value abnormality signal was transmitted to the external equipment is alarm, in the case of detecting a predetermined recovery operation by the disaster prevention receiving board or the external equipment, characterized in that a line current monitoring means for releasing the alarm of the current abnormal Tunnel disaster prevention system.
  2. In tunnel disaster prevention system for monitoring by connecting a terminal equipment from the disaster prevention receiving board the signal lines drawn in the tunnel,
    The disaster prevention receiving panel, the signal measured value of the current flowing through the line, the measured current value is determined as the current value abnormality when exceeded or the predetermined threshold value is above a predetermined threshold current value abnormality signal the interrupt the measurement of the external and of the transmission to the equipment to alarm Rutotomoni the current value, when detecting the predetermined recovery operation by the disaster prevention receiving board or the external equipment, to release the alarm of the current abnormal A tunnel disaster prevention system comprising line current monitoring means for restarting the process of measuring the current value .
  3. In tunnel disaster prevention system according to claim 1 or 2, wherein the line current monitoring unit, when setting the threshold value for determining a current value abnormality, determines that the current value abnormality to the signal line unit, the predetermined A tunnel disaster prevention system, characterized in that it is difficult to determine that the current value is abnormal compared to before the change .
  4. In tunnel disaster prevention system according to claim 1 or 2, wherein the line current monitoring means, when it is determined that the current value abnormality in one of the plurality of signal lines, a current value signal line is determined with the current abnormalities Tunnel disaster prevention system, characterized in that it is excluded from the measurement target .
  5. 3. The tunnel disaster prevention system according to claim 1 , wherein the line current monitoring unit measures a predetermined environmental condition together with a current value of the signal line, and determines the measured current value of the signal line and the environmental condition. The tunnel disaster prevention system characterized by determining the current value abnormality in response .
  6. In tunnel disaster prevention system according to claim 5, wherein the line current monitoring means, based on said predetermined environmental condition measurements, and changes the predetermined threshold value determines the current anomaly Tunnel disaster prevention system.
  7. In tunnel disaster prevention system according to claim 6, wherein the line current monitoring means based on said predetermined environmental condition measurements, the predetermined predetermined period threshold value determines the current anomaly, changing A tunnel disaster prevention system characterized by
  8. In tunnel disaster prevention system according to claim 7, wherein the line current monitoring means, based on the measurement result of the predetermined environmental condition in the time zone of the season or day, the predetermined threshold value determining said current abnormalities Is changed according to the season or the time zone of the day .
  9. In tunnel disaster prevention system according to claim 6 or 8, wherein the line current monitoring means, said predetermined threshold set in advance as a predetermined reference threshold, determines that the hot and humid from the measurements of the predetermined environmental condition In this case, the reference threshold value is changed to a higher threshold value, and the reference threshold value is changed to a lower threshold value when the low temperature drying is determined from the measurement result of the predetermined environmental condition .
  10. In tunnel disaster prevention system according to claim 1 or 2, wherein the line current monitoring means, when it is determined that the current abnormalities for the same of the signal line continuously for a predetermined number of times, the current the outside of the equipment A tunnel disaster prevention system that sends an alarm by sending an abnormal value signal.
  11. In tunnel disaster prevention system according to claim 1 or 2, wherein the line current monitoring means, a current value of the signal line is measured at predetermined intervals, the current in the current measurement of the signal line for each of the predetermined cycle abnormal and if it is determined, for the signal line is determined with the current value abnormality, the short period every than the predetermined period, the tunnel disaster prevention system, characterized by measuring the current value of the signal line.
  12. In tunnel disaster prevention system according to claim 1 or 2, wherein the line current monitoring means, when it is determined that the current value abnormality, then the alarm by sending the current value abnormality signal to the external equipment, then tunnel disaster prevention system, characterized in that when a predetermined time elapses, to release the alarm.
  13. The tunnel disaster prevention system according to any one of claims 1 to 12, wherein the predetermined threshold value is a predetermined lower limit threshold value lower than a current value normally flowing through the signal line, and the current value measured by the line current monitoring means. Is determined to be abnormal in the current value when the value is less than or equal to the lower threshold or lower than the lower threshold.
JP2015153017A 2015-08-03 2015-08-03 Tunnel disaster prevention system Active JP6577780B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2015153017A JP6577780B2 (en) 2015-08-03 2015-08-03 Tunnel disaster prevention system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2015153017A JP6577780B2 (en) 2015-08-03 2015-08-03 Tunnel disaster prevention system

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP2019152418A Division JP6885994B2 (en) 2019-08-23 2019-08-23 Tunnel disaster prevention system

Publications (2)

Publication Number Publication Date
JP2017034489A JP2017034489A (en) 2017-02-09
JP6577780B2 true JP6577780B2 (en) 2019-09-18

Family

ID=57988996

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2015153017A Active JP6577780B2 (en) 2015-08-03 2015-08-03 Tunnel disaster prevention system

Country Status (1)

Country Link
JP (1) JP6577780B2 (en)

Also Published As

Publication number Publication date
JP2017034489A (en) 2017-02-09

Similar Documents

Publication Publication Date Title
CN201629021U (en) Fireproof earth-leakage monitoring device
KR20190051225A (en) Intelligent switchboard management system using integrated sensing module
JP2021122141A (en) Disaster prevention system
CN103861222A (en) Mixed early-warning cabinet fire extinguishing device and early-warning method thereof
KR20160010896A (en) Smart fire-fighting management system for cultural assets and method thereof
JP2018073023A (en) Tunnel disaster prevention system
JP6498917B2 (en) Tunnel disaster prevention system
JP6577780B2 (en) Tunnel disaster prevention system
KR101364813B1 (en) Fires prevention system of smart type
JP3963416B2 (en) Sprinkler fire extinguishing equipment
JP6899177B2 (en) Tunnel disaster prevention system
JP2020115382A (en) Tunnel disaster prevention system
KR102134256B1 (en) Repeater for Automatic Fire Detection system
JP6894824B2 (en) Tunnel disaster prevention system
JP6689711B2 (en) Tunnel disaster prevention system
JP2020161150A (en) Tunnel disaster prevention system
JP2018067032A (en) Tunnel disaster prevention system
JP2018049487A (en) Tunnel disaster prevention system
JP2021176087A (en) Disaster prevention system
JP3457229B2 (en) Signal transmission system for gas fire extinguishing equipment
JP6746444B2 (en) Tunnel disaster prevention system
JP2020170523A (en) Tunnel disaster prevention system
JP6894823B2 (en) Tunnel disaster prevention system
JP2020187791A (en) Tunnel disaster prevention system
JP2020205072A (en) Tunnel disaster prevention system

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20180416

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20190419

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20190522

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20190624

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20190724

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20190823

R150 Certificate of patent or registration of utility model

Ref document number: 6577780

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150