JP6899177B2 - Tunnel disaster prevention system - Google Patents

Description

The present invention relates to a tunnel disaster prevention system that monitors abnormalities in a tunnel by connecting terminal devices such as a notification device and a detector installed in the tunnel to a disaster prevention receiver.

Conventionally, emergency facilities have been installed in tunnels such as motorways to protect people and vehicles from fire accidents that occur in the tunnels.

Such emergency facilities include fire detectors, manual notification devices, emergency telephones for fire monitoring and reporting, fire hydrant devices for extinguishing fires and preventing the spread of fire, and tunnel skeletons. In order to protect the inside of the duct from fire, water spray that sprinkles fire extinguishing water from the water spray head is installed, and a tunnel disaster prevention system is constructed by installing a disaster prevention receiver that monitors and controls the terminal equipment of these emergency facilities. doing.

The tunnel disaster prevention system consisting of a disaster prevention receiver and terminal equipment is roughly divided into an R-type transmission system and a P-type direct delivery system. The R-type transmission method connects a terminal device such as a fire detector whose address is set to a transmission line, and enables individual management in which detection and control are performed for each terminal device by transmission control. In the P-type direct delivery method, a plurality of terminal devices belonging to the same section are connected to a signal line drawn out in a predetermined section unit according to the type of the terminal device, and detection and control are performed for each signal line.

By the way, in the P-type direct delivery type tunnel disaster prevention system, terminal devices such as a manual notification device, a fire extinguisher activation device, and a duct temperature detector have a signal output unit for operation or detection configured as a non-voltage a contact switch. A non-voltage a contact switch is connected to the signal line drawn from the disaster prevention receiver. The non-voltage a-contact switch is normally turned off in the monitoring state, and is turned on by an operation or detection operation to output a non-voltage contact signal.

Specifically, the power supply voltage is applied to one of the signal lines from the disaster prevention receiver side via a pull-up resistor, and in the steady monitoring state when the non-voltage a contact switch is turned off, most of the current consumption flows through the signal line. However, the power supply voltage between the signal lines seen from the disaster prevention receiver is kept at approximately the power supply voltage. When the non-voltage a contact switch is turned on, a current flows through the signal line, the voltage between the signal lines seen from the disaster prevention receiver drops to almost zero volts, and the disaster prevention receiver increases the current consumption of the signal line or between the signal lines. Detects a voltage drop and outputs a received signal indicating the operation or detection of the terminal device to the control unit.

For example, in the case of a fire report signal from a manual report device, the disaster prevention receiver performs control operations such as fire display, lighting control of the response lamp on the terminal side, manual report section display, and output of the fire extinguishing pump start signal, and also performs remote monitoring. A fire alarm signal is transmitted to external equipment such as control equipment, TV monitoring equipment, variable road information board equipment, tunnel ventilation equipment, and lighting equipment so that predetermined countermeasure control can be performed.

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

In such a conventional P-type direct delivery type tunnel disaster prevention system, the insulation deteriorates due to aged deterioration of the signal line (outside line cable) connecting the terminal equipment, and the signal line connecting the terminal equipment. More current than expected in the normal monitoring state flows, and the disaster prevention receiver 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, and variable road. Information board equipment, tunnel ventilation equipment, lighting equipment, and other other equipment are often linked to block traffic in tunnels.

In order to solve this problem, a current monitoring device is provided in a housing separate from the disaster prevention receiver, 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. It is measured and recorded at regular intervals, and when the measured current deviates from a predetermined threshold range, an abnormality in the current value of the signal line is determined and an alarm is given.

By the way, if the disaster prevention receiver receives a fire alarm signal and outputs a fire alarm, or if a signal line failure is detected and a failure alarm is output, the fire signal will be displayed at the stage of subsequent investigation work. The measurement history measured by the current monitoring device may be displayed for the fire line in which the fire line is received or the failure line in which the failure is detected, and the state of the fire line or the failure line may be investigated.

However, since the current monitoring device is conventionally provided in a separate housing from the disaster prevention receiver, the transmission function and processing function that send fire information, failure information, etc. from the disaster prevention receiver to the current measurement device and store it together with the measurement history. There is also a problem that the equipment configuration and processing become complicated.

In addition, in the conventional disaster prevention receiver, a tunnel system diagram is placed on the graphic panel arranged on the front of the housing, and the line indicator lights are divided into the manual notification device and the fire hydrant activation device in the system diagram. They are arranged, and when a fire notification signal is received from the manual notification device and a fire alarm is output, the line indicator lamp corresponding to the manual notification device is turned on to display the fire hydrant section, and the fire hydrant is activated. When a pump start signal is received from the device, the line indicator light corresponding to the fire hydrant starter is turned on to display the section where the fire hydrant is started.

In addition to the fire monitoring by the signal line, the disaster prevention receiver also monitors the disconnection of the signal line, and the front panel of the housing is used to display the representative of the disconnection failure.

However, it takes time and effort to check the signal line in which the disconnection failure occurs, and there is a problem that it is not possible to easily confirm which section of the signal line has the trouble.

In the present invention, the function of the current monitoring device is integrated with the disaster prevention receiver to simplify the equipment configuration and processing, and the line indicator lamp provided corresponding to the signal line is used to cause a disconnection failure other than a fire. It is an object of the present invention to provide a tunnel disaster prevention system capable of easily grasping a signal line in which an abnormal current value or an abnormal current value is occurring and taking necessary measures.

(Tunnel disaster prevention system)
The present invention
In a tunnel disaster prevention system equipped with a terminal device that is connected to the disaster prevention receiver by a signal line laid in the tunnel and outputs a predetermined signal related to a fire to the disaster prevention receiver via the signal line.
It is equipped with a control unit that determines a current value abnormality that is an abnormality of the current value flowing through the signal line, and at least displays detailed information regarding the determination of the signal line determined to be the current value abnormality and an alarm display of the current value abnormality on the display unit.
The control unit is characterized in that the display unit displays different alarms when the disaster prevention receiving panel receives a predetermined signal related to a fire via a signal line and when it is determined that the current value is abnormal.

(Determination of signs of abnormal current value)
The control unit further determines the sign of the current value abnormality indicating the state in which the occurrence of the current value abnormality is predicted, and the detailed information regarding the determination of the signal line determined to be the sign of the current value abnormality and the sign of the current value abnormality. Display the alarm display on the disaster prevention receiver
When it is determined that the current value is abnormal, the display unit is made to display an alarm different from the case where the disaster prevention receiving panel receives a predetermined signal related to the fire and the case where it is determined that the current value is abnormal.

(Signal line failure detection)
The control unit further detects a signal line failure and displays an alarm display of the signal line failure on the display unit.
When a signal line failure is detected, an alarm different from when the disaster prevention receiver receives a predetermined signal related to a fire on the display, when it is determined that the current value is abnormal, or when it is determined that it is a sign of an abnormal current value. Display it.

(Basic effect)
The present invention is a signal in a tunnel disaster prevention system including a terminal device that is connected to a disaster prevention receiver by a signal line laid in the tunnel and outputs a predetermined signal related to a fire to the disaster prevention receiver via the signal line. Judgment of current value abnormality, which is an abnormality of the current value flowing in the line, judgment of a sign of current value abnormality indicating a state in which the occurrence of current value abnormality is predicted, a control unit for detecting a signal line failure, and a disaster prevention receiver Since it is equipped with a display unit that displays different alarms when a predetermined signal related to a fire is received, when it is determined that the current value is abnormal, when it is determined that the current value is abnormal, or when a signal line failure is detected. For example, when a fire alarm, a failure alarm, a current value abnormality alarm, or a current value abnormality sign alarm is issued from the disaster prevention receiver, the line display that is operating among the multiple line indicator lights provided on the front panel. By observing the display state of the light, it is possible to easily grasp whether the signal line for the terminal device in which section is causing a disconnection failure, a current value abnormality, or a sign of a current value abnormality in addition to a fire. It is possible to take necessary measures appropriately.

Further, since the current monitoring unit is provided integrally with the disaster prevention receiver, the equipment configuration and processing can be simplified and the installation space can be reduced as compared with the case where the current monitoring device is provided in a separate housing.

(Effect of displaying detailed information on judgment)
In addition, when a sign of current value abnormality or current value abnormality is determined, detailed information regarding the determination of the determined signal line is displayed on the display unit, so that a sign of current value abnormality or current value abnormality occurs. You can know the status of the signal line in detail.

Explanatory diagram showing the outline of the tunnel disaster prevention system Explanatory drawing showing the appearance of the disaster prevention receiver Explanatory drawing showing the state where the panel door of the disaster prevention receiver is opened and the monitor device can be seen. Explanatory drawing showing by taking out the graphic panel of FIG. Explanatory drawing showing by taking out the display panel of FIG. Block diagram showing the outline of the functional configuration of the tunnel disaster prevention system Graph diagram showing the sign judgment of current value abnormality by setting the sign threshold range Graph diagram showing the predictive judgment of current value abnormality due to the difference from the average current Graph diagram showing the predictive judgment of current value abnormality due to the difference from the current value of the previous measurement A time chart showing the operating status of the line indicator that changes the blinking or blinking frequency according to the alarm type. A 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 recording screen of the monitor device displaying the measurement history by regular cycle measurement Explanatory drawing showing the measurement record narrowing down screen of the monitor device which displays the measurement history extracted by setting the narrowing down condition.

[Overview 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 1a and a down line tunnel 1b are constructed as a tunnel for a motorway, and the up line tunnel 1a and the down line tunnel 1b are connected by an evacuation connecting pit 2.

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

The fire hydrant device 18 houses a hose with a nozzle inside the fire hydrant door. In the event of a fire, the fire hydrant door is opened to pull out the hose with a nozzle, and when the fire hydrant valve open / close lever is opened, fire hydrant water is discharged and the fire hydrant valve open / close detection is detected. The switch 14 is turned on to start the fire extinguishing pump.

Further, the fire hydrant device 18 is provided with a notification device door, and the notification device door is provided with a manual notification device (transmitter) 16. 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 functioning as the contact means is turned on, the fire hydrant start signal and the fire are generated. A notification signal is output.

The fire hydrant device 18 is provided with a pump start switch used by the fire brigade, but since it is the same switch in terms of the system that outputs the same pump start signal as the fire hydrant valve open / close detection switch 14, the following This will be described as a fire hydrant valve open / close detection switch (including a pump start switch) 14. Further, the manual notification device 16 is installed in the emergency telephone box in addition to the fire hydrant device 18, 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 temperature detector in a duct, and the like are provided as tunnel emergency equipment, but they are not shown.

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

The automatic valve device constitutes a water spray facility, and the main valve is opened and driven by remote opening control of the electric valve for operation, and fire extinguishing water is discharged from multiple water spray heads installed in the longitudinal direction at the top of the tunnel wall surface. Protect the tunnel frame from fire.

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

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

From the disaster prevention receiver 10, P-type signal lines 12-11 to 12-16, 12-21 to 12-26 are divided into predetermined sections in the up line tunnel 1a and down line tunnel 1b in the longitudinal direction of the tunnel. Is pulled out, for example, one section is formed by four fire hydrant devices 18, and a plurality of fire hydrant valve open / close detection switches 14 and a manual notification device 16 provided in each section are connected.

Similarly, for the in-duct temperature detector installed in the duct, a P-type signal line is pulled out in each section, and a plurality of in-duct temperature detectors provided in each section are connected. However, the illustration is omitted. Further, the signal lines 12-11 to 12-26 may be referred to as a signal line 12 when it is not necessary to distinguish them.

The P-type signal line 12 is composed of a signal line and a common line, and is connected to a non-voltage a contact switch provided in each of the fire extinguisher valve open / close detection switch 14, the manual notification device 16, and the temperature detector in the duct of the fire extinguisher device 18. In this case, the non-voltage a contact switch is turned on by each operation or detection operation to allow the line current to flow, so that the fire extinguishing plug start signal, fire notification signal, and temperature detection signal are sent to the disaster prevention receiver 10.

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

The ventilation equipment 28 is equipment that gives energy to the air in the tunnel by a high blowing wind speed operated by a jet fan installed on the ceiling side in the tunnel to cause an air flow in the longitudinal direction of the tunnel.

Further, the alarm display board equipment 30 is equipment for displaying an abnormality in the tunnel on an electric display board to notify the user in the tunnel. The radio rebroadcasting 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 equipment 34 is equipment for confirming the scale and position of a fire, operating a water spraying equipment, and grasping the situation in a tunnel when evacuation guidance is performed. The lighting equipment 36 is equipment for driving and managing the lighting equipment in the tunnel.

[Disaster prevention receiver]
2A and 2B are explanatory views showing the appearance of the disaster prevention receiver, FIG. 2A shows the front side, and FIG. 2B shows the side surface. FIG. 3 is an explanatory view showing a state in which the panel door of the disaster prevention receiver is opened so that the monitor device can be seen.

(Front panel and monitoring device in the housing)
As shown in FIG. 2, the disaster prevention receiver 10 is provided with a panel door 62 that can be opened and closed by operating a handle on the front surface of the box-shaped housing 61 opened in the front-rear direction, and also on the back surface of the housing 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, from the graphic panel 44 in which the line indicator lights are arranged in the tunnel system diagram, the display panel 50 in which a plurality of representative lights are arranged, and the operation panel 52 in which various operation switches and telephones are arranged. The operation display unit 64 is provided.

Inside the housing 61, a monitor device 46 using a liquid crystal display with a touch panel is arranged. As shown in FIG. 3, when the panel door 62 of the disaster prevention receiver 10 is opened, the monitor device 46 arranged on the support frame 68 appears in the housing 61, and the current value of the signal line is measured on the screen of the monitor device 46. It is possible to display the measurement history of the current value including the result and the judgment result.

(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 light 100 is provided in the upper center of the graphic panel 44, and following the tunnel name below it, as a tunnel system diagram, an up line tunnel system diagram 102a and a down line tunnel system diagram 102b Is drawn.

The up line tunnel system diagram 102a is divided into three stages: a fire hydrant arrangement unit 104, a manual notification device arrangement unit 106, and a fire hydrant starter arrangement unit 108. In the fire hydrant arrangement 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 notification device arrangement unit 106 is divided into 6 sections corresponding to the P-type signal line, and each section is indicated with a section number of "1 to 6" (corresponding to the line number), and each section is also represented. A line indicator light 110 is provided in the section. Similarly, the fire hydrant activation device arrangement unit 108 is also divided into 6 sections corresponding to the P-type signal line, and each section is indicated with a section number of "1 to 6", and the line is displayed in each section. A light 112 is provided. The fire hydrant arrangement unit 104, the manual notification device arrangement unit 106, and the fire hydrant starter arrangement unit 108 are the same for the down line tunnel system diagram 102b.

The line indicator lights 110 and 112 provided on the graphic panel 44 are provided so that the determination contents can be understood when a fire, a disconnection failure, a current value abnormality, or a sign of a current value abnormality is determined for the corresponding signal line. It is displayed in a different display state.

(Display panel)
FIG. 5 is an explanatory view showing the display panel of FIG. 2 taken out. As shown in FIG. 5, various indicator lights necessary for disaster prevention monitoring are arranged on the display panel 50, and the manual notification line disconnection light 120 corresponds to the disconnection monitoring function provided in the disaster prevention receiver panel 10. A fire hydrant line disconnection lighting 124 is provided. Further, corresponding to the current monitoring function provided in the disaster prevention receiving panel 10, the current monitoring device measuring medium light 124, the current monitoring device failure light 126, the manual notification current value abnormality light 128, the manual notification current value abnormality sign light 130, A fire extinguisher current value abnormality lamp 132 and a fire extinguisher current value abnormality sign lamp 134 are provided. When each event is determined, these indicator lights are turned on or blinked according to a predetermined display color.

[Disaster prevention receiver configuration]
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 receiving panel 10 includes a control unit 40, and the control unit 40 is a function realized by executing a program, for example, and the hardware includes various inputs including a CPU, a memory, and an AD conversion port. Use a computer circuit or the like equipped with an output port or the like.

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 graphic panel 44 and a monitoring device. 46, an alarm unit 48 equipped with a speaker, a buzzer, an alarm indicator light, etc., a display panel 50 equipped with various indicator lights, an operation panel 52 equipped with various switches, and further, an IG slave station equipment 24, a ventilation equipment 28, A P-type transmission unit 54 is provided in which the alarm display board equipment 30, radio rebroadcast equipment 32, television monitoring equipment 34, lighting equipment 36, fire extinguishing pump equipment 20, and cooling pump equipment 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 functions realized by executing the program.

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

Further, when the monitoring control unit 56 receives, for example, a fire notification signal (fire signal) operated by the manual notification device 16 provided in the fire hydrant device 18, the alarm unit 48 sounds the main sound and the graphic shown in FIG. The fire representative light 100 on the panel 44 is blinked to display the fire representative, and the line indicator light 110 of the manual notification device arrangement unit 106 corresponding to the signal line receiving the fire notification signal is turned on to display the manual notification area. In addition, a response signal is transmitted to the fire hydrant device 18 to control the response lamp to be turned on.

Further, when the monitoring control unit 56 receives the fire hydrant start signal by turning on the fire hydrant valve open / close detection switch 14 accompanying the operation of the fire hydrant valve open / close lever provided in the fire hydrant device, following the reception of the fire notification signal, FIG. The line indicator 112 of the fire hydrant starter arrangement unit 108 corresponding to the signal line that received the fire hydrant start signal of the graphic panel 44 shown in the above is turned on to display the fire hydrant start section.

Further, when the monitoring control unit 56 receives the fire hydrant start signal output by turning on the fire hydrant valve open / close detection switch 14 by opening the fire hydrant valve open / close lever provided in the fire hydrant device 18, the monitoring control unit 56 starts the pump to the fire hydrant pump equipment 20. Controls to send a signal and activate it.

Further, the monitoring control unit 56 transmits a fire notification signal to the distant monitoring control equipment 26 via the IG slave station equipment 24 to give an alarm as a control for other equipment based on the reception of the fire notification signal, the TV monitoring equipment 34. Control to display the manual report section by, control to display the fire report of the manual report section by the alarm display board equipment 30, control to ventilate the manual report section by the ventilation equipment 28, control to illuminate the manual report section by the lighting equipment 36, etc. I do.

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

Further, the monitoring control unit 56 monitors the disconnection failure of the signal line 12, and when it detects the disconnection failure of the signal lines 12-21 to 12-26 with respect to the manual notification device 16, the alarm unit 48 sounds the failure sound. When the manual notification line disconnection lamp 120 of the display panel 50 shown in FIG. 5 is lit in yellow, for example, and the disconnection failure of the signal lines 12-11 to 12-16 with respect to the fire hydrant valve open / close detection switch 14 is detected, the alarm unit 48 The fire hydrant line disconnection lamp 122 of the display panel 50 shown in FIG. 5 is controlled to be turned on, for example, in yellow.

The monitoring control unit 56 monitors the disconnection failure of the signal line 12 by connecting a terminating resistor to the end of the signal line 12 to allow a disconnection monitoring current to flow, and detects the disconnection failure when the disconnection monitoring current is interrupted.

(Current monitoring unit)
The current monitoring unit 58 measures the current value of the signal line 12 connected to the terminal device provided with the non-voltage a contact switch including the fire extinguisher valve open / close detection switch 14 and the manual notification device 16, and the measured current value is a predetermined upper limit. When the value and the lower limit value deviate from the threshold range, the current value abnormality is determined, and the measurement result is stored as a measurement history in a memory using a detachable memory card.

The current value of the signal line 12 is measured by the current monitoring unit 58, for example, the current value measured for a predetermined time is measured for a predetermined time in order to remove the influence of noise by AD-converting and reading the detection voltage of the current detection resistor inserted in the signal line 12. Calculate the average value of.

Here, the current value measurement by the current monitoring unit 58 includes a fixed cycle measurement, an automatic measurement, and a manual measurement. The constant cycle measurement of the current monitoring unit 58 sequentially measures the current values of all the signal lines 12 at predetermined cycles, for example, once a day, and when the measured current values deviate from the predetermined threshold range, the current is measured. 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 monitoring device 46 is detected, the current values flowing through all the signal lines 12 are sequentially measured, and the measured current value is out of the predetermined threshold range. In that case, the abnormality of the current value is determined, and the measurement result is controlled to be displayed on the screen on the monitor device 46.

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

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

During the measurement of the constant cycle measurement, the automatic measurement, or the manual measurement, the current monitoring unit 58 lights the current monitoring device measuring lamp 124 in the display panel 50 shown in FIG. 5 in green, and also performs the constant cycle measurement, the automatic measurement. When a current value abnormality is determined by measurement or manual measurement, the manual notification current value abnormality lamp 128 or the fire extinguisher current value abnormality lamp 132 in the display panel 50 shown in FIG. 5 is controlled to be lit in yellow and displayed as a representative. ..

Further, when the current monitoring unit 58 detects the abnormality history display operation by the monitoring 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 monitors the monitoring device 46. Controls the screen display in chronological order.

[Predictive warning of current value abnormality by current monitoring unit]
The current monitoring unit 58 provided in the control unit 40 of the disaster prevention receiver 10 is a sign of a current value abnormality when the measured current value exceeds a predetermined sign threshold within a predetermined threshold range for determining a current value abnormality. Is determined and control is performed to output a sign alarm.

The current value abnormality sign alarm by the current monitoring unit 58 displays the current value abnormality sign alarm on the screen of the graphic panel 44 as a representative, and also displays the measurement result as detailed information of the current value abnormality sign alarm on the screen of the monitor device 46. Display the system indicating whether it is an up line tunnel or a down line tunnel, and the device name such as a fire extinguisher or a manual notification device that is the target of a sign alarm.

Here, the predictive determination of the current value abnormality by the current monitoring unit 58 is, for example, (1) the predictive determination of the current value abnormality by setting the predictive threshold range.
(2) Judgment of a sign of current value abnormality due to the difference from the average current,
(3) Judgment of a sign of current value abnormality due to the difference from the current value measured last time,
There is, and the sign of the current abnormal value is determined by any one or a combination of two or more, and the sign alarm is output.

(Predictive judgment of current value abnormality by setting the predictive threshold range)
FIG. 7 is a graph showing a sign determination of a current value abnormality by setting a sign threshold range. FIG. 7 shows, for example, the diurnal change of the current value of the measurement history obtained by the fixed cycle measurement from the current day (1 day) to 18 days before that. The lower limit value Is1 and the upper limit value Is4 for determining the current value abnormality are set for such a current value measurement history, and the current value is within the range of the threshold range Is1 to Is4 for determining the current value abnormality. A sign lower limit value Is2 and a sign upper limit value Is3 for determining a sign of abnormality are set.

As shown in FIG. 7, the current monitoring unit 58 sets a narrower predictive threshold range Is2 to Is3 within the threshold range Is1 to Is4 for determining the current value abnormality, and the measured current value Ii is the predictive threshold range. When it deviates from Is2 to Is3, that is,
Is2 ≧ Ii> Is1 or Is4> Ii ≧ Is3
When becomes, the control is performed to determine the sign of the current value abnormality and output the sign alarm.

In FIG. 7, the current value Ii measured by the fixed-period measurement of the current day (first day) has reached the upper limit of the sign Is3. Therefore, the current monitoring unit 58 has the current value of the measured current value. The sign of abnormality is judged and a sign alarm is output.

Further, when the current value abnormality sign is determined by the current monitoring unit 58 in the constant cycle measurement, the automatic measurement or the manual measurement, the manual notification current value abnormality sign lamp 130 or the fire hydrant in the display panel 50 shown in FIG. Control is performed so that the current value abnormality sign lamp 134 is lit in yellow to display a representative display.

(Determining the sign of current value abnormality based on the difference from the average current)
FIG. 8 is a graph showing a sign determination of a current value abnormality due to a 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 constant cycle measurement of the current day (first day) determines the current value abnormality. When the difference ΔI between the measured current value Ii and the average current value Ia exceeds a predetermined predictive threshold ΔIth on condition that the current value is within the threshold range Is1 to Is4, the sign of the current value abnormality is determined. Controls to output a sign alarm.

In FIG. 8, the difference ΔI between the current value Ii and the average current value Ia measured by the constant cycle measurement of the current day (first day) is equal to or greater than the predictive threshold value ΔIth. Therefore, the current monitoring unit 58 Determines the sign of abnormal current value for the measured current value and outputs a sign alarm.

(Judgment of a sign of current value abnormality due to the difference from the current value measured last time)
FIG. 9 is a graph showing a sign determination of an abnormality in the current value due to a difference from the current value measured in the previous measurement. As shown in FIG. 9, the current monitoring unit 58 indicates that the current value Ii measured by the constant cycle measurement of the current day (first day) is within the threshold range Is1 to Is4 for determining the current value abnormality. As a condition, when the difference ΔI from the previously measured current value Ii-1 exceeds a predetermined predictive threshold value ΔIth, the sign of the current value abnormality is determined and the sign alarm is output. Here, the difference ΔI between the current value Ii measured this time and the current value Ii-1 measured last time, which is obtained by the current monitoring unit 58, indicates the rate of change of the current value, which is the rate of change of the current value. It means that when the value exceeds a predetermined threshold value, a sign of a current value or more is determined and an alarm is given.

(Alarm display control unit)
The alarm display control unit 60 provided in the control unit 40 of the disaster prevention receiving panel 10 of FIG. 6 displays the line indicators 110 and 112 provided in the graphic panel 44 of FIG. 4 with a fire alarm and a disconnection failure by the monitoring control unit 56. Control is performed to operate in different display states according to the alarm and the current value abnormality alarm and the current value abnormality sign alarm by the current monitoring unit 58.

The alarm display control unit 60 controls the line indicator light.
(1) Alarm identification display by blinking or blinking frequency (2) Alarm identification display by display color,
(3) Either the alarm identification display by the blinking or blinking pattern.

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

FIG. 10A shows the operation of the line indicator light in response to the fire alarm, and the line indicator light is always lit based on the reception of the fire notification signal.

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

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

FIG. 10 (D) shows the operation of the line indicator light corresponding to the sign alarm of the current value abnormality, and blinks or blinks at a frequency of 3 Hz, which is three times a second. The blinking or blinking frequency is an example, and may be a combination of frequencies that can be appropriately identified as needed.

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

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

FIG. 11A shows the operation of the line indicator light in response to the fire alarm, and the line indicator light is repeatedly lit once for a long time and three times for a short time.

FIG. 11B shows the operation of the line indicator light corresponding to the disconnection failure alarm, and the pattern of turning on the line indicator light once and turning it on briefly once is repeated.

FIG. 11C shows the operation of the line indicator light corresponding to the current value abnormality alarm, and the line indicator light is lit three times for a short time in a pattern of repeating the pause period.

FIG. 11D shows the operation of the line indicator light corresponding to the sign alarm of the current value abnormality, and the line indicator light has a pattern in which one short lighting and two short lighting are repeated through a pause period.

It should be noted that these patterns are examples, and may be a combination of different blinking patterns or blinking patterns as needed.

(Display of measurement recording screen by monitoring device)
FIG. 12 is an explanatory diagram showing a measurement recording screen of the monitoring device that displays the measurement history by the constant cycle measurement, and is an example of a case where the current monitoring unit 58 determines a sign of a current value abnormality and outputs a sign alarm. Shown.

As shown in FIG. 12, for example, the manual notification current value abnormality lamp 128 and the manual notification current value abnormality sign lighting 130 are lit in yellow on the display panel 50 of FIG. 5, and a representative display of the current value abnormality and its sign alarm 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 screen 70 of the monitor device 46, the measurement recording screen is read by reading the measurement history measured and stored by the fixed cycle measurement. 72 is displayed.

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, it is possible to switch the page of the measurement history detailed information 79. The file save button 76 instructs the memory storage of the measurement result. The memory eject button 77 is operated when ejecting the memory storing the current value measurement information from the disaster prevention receiving panel 10.

The measurement history detailed information 79 displayed in the center of the measurement recording screen 72 takes as an example the predictive determination of the current value abnormality by setting the predictive threshold range in (1). Here, in the line number 002, the measured value is 0.75 mA, and the upper limit of the sign has reached 0.75 mA. Therefore, the sign of the current value abnormality is indicated by the display of "NG" in the sign determination. Has been done.

Further, in the line number 004, the measured value is 1.25 mA, which exceeds the abnormal upper limit value of 1.00 mA. Therefore, in the abnormality determination, the current value abnormality is indicated by the display of "NG". .. In this case, since the measured value of 1.25 mA also exceeds the upper limit of the sign of 0.75 mA, the sign is naturally indicated by the display of “NG” in the sign determination.

A line selection button 78 is arranged below the measurement recording screen 72, and when the line selection button 78 is operated, the display can be switched to the measurement record narrowing down screen 80 shown in FIG.

The measurement record narrowing screen 80 of FIG. 13 includes a system selection unit 81, a device selection unit 82, a division selection unit 83, a confirmation button 84, a release button 85, a page display 86, page switching buttons 87 and 88, and a closing button 89. It is provided.

The system selection unit 81 selects from an up line and a down line. The device selection unit 82 selects from manual notification, fire hydrant, and duct. The section selection unit 83 inputs a section number.

On the measurement record narrowing down screen 80, for example, when it is desired to narrow down to the measurement record of "section 01 in the manual notification device for the up line", as shown in the figure, the system selection unit 81 is "up line" and the device selection unit 82 is "up line". When "manual notification" and "01" are set in the section selection unit 83 and the confirmation button 84 is operated, the corresponding narrowing measurement record 90 is displayed.

When the release button 85 is operated in this state, the narrowing condition and the narrowing measurement record 90 are cleared. Further, when the closing 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, it is possible to narrow down and display the measurement record by setting the narrowing conditions in combination with the system, the device, and the section from the huge number of stored measurement records. This makes it possible to efficiently determine, for example, the line deterioration status of an appropriate device that has caused an abnormality in the current value.

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

[Modification of the present invention]
In the above embodiment, a fire alarm, a failure alarm, a current value abnormality alarm, and a current value abnormality sign alarm are performed, but at least any three of them may be identified.

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

1a: Up line tunnel 1b: Down line tunnel 10: Disaster prevention receiver 12, 12-11 to 12-16, 12-21 to 12-26: Signal line 14: Fire hydrant valve open / close detection switch 16: Manual notification device 18: Fire hydrant Equipment 20: Fire extinguishing pump equipment 22: Cooling pump equipment 24: IG slave station equipment 26: Remote monitoring and control equipment 28: Ventilation equipment 30: Alarm display board equipment 32: Radio rebroadcasting equipment 34: TV 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 record screen 80: Measurement record narrowing screen 100: Fire representative light 102a: Up line tunnel system diagram 102b: Down line tunnel system diagram 104: Fire hydrant arrangement unit 106: Manual notification device arrangement unit 108: Fire hydrant starter arrangement unit 110, 112: Line indicator 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 abnormality light 130: Manual notification current value abnormality sign light 132: Fire hydrant current value abnormality light 134: Fire hydrant current value abnormality sign light

Claims (3)

In a tunnel disaster prevention system equipped with a terminal device that is connected to a disaster prevention receiver by a signal line laid in the tunnel and outputs a predetermined signal related to a fire to the disaster prevention receiver via the signal line.
A control unit that determines a current value abnormality that is an abnormality of the current value flowing through the signal line, and at least displays detailed information regarding the determination of the signal line determined to be the current value abnormality and an alarm display of the current value abnormality on the display unit. Prepare,
The control unit causes the display unit to display different alarms depending on whether the disaster prevention receiving panel receives a predetermined signal related to the fire via the signal line and the case where it is determined that the current value is abnormal. A tunnel disaster prevention system featuring.
In the tunnel disaster prevention system according to claim 1,
The control unit further determines a sign of a current value abnormality indicating a state in which the occurrence of the current value abnormality is predicted, and detailed information regarding determination of a signal line determined to be a sign of the current value abnormality and the current value abnormality. The warning display of the sign of
When it is determined that the current value is abnormal, the display unit is made to display an alarm different from that when the disaster prevention receiving panel receives a predetermined signal regarding the fire and when it is determined that the current value is abnormal. A tunnel disaster prevention system characterized by this.
In the tunnel disaster prevention system according to claim 1 or 2.
The control unit further detects a failure of the signal line and causes the display unit to display an alarm display of the failure of the signal line.
When a failure of the signal line is detected, the disaster prevention receiver receives a predetermined signal related to the fire on the display unit, determines that the current value is abnormal, and determines that it is a sign of the current value abnormality. A tunnel disaster prevention system characterized by displaying an alarm different from the case where the alarm is displayed.

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