JP2022106938A - Disaster prevention system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a disaster prevention system capable of connecting a terminal device via a signal line which can give an alarm by catching a sign of a current value abnormality on a signal line before it is determined.

SOLUTION: In a disaster prevention system, a disaster prevention reception panel 10 comprises: a control unit 40 that determines a current value abnormality of a current value flowing in each of signal lines 12-1 to 12-n and a sign of a current value abnormality; a main monitor device 44 that displays a current value abnormality and a sign of a current value abnormality; and a sub-monitor device 46 that displays a current value abnormality or a sign of a current value abnormality in accordance with a determination result of the control unit 40, and a current value. The main monitor device 44 and the sub-monitor device 46 are arranged so that they are in a mutual position relation such that there is a case the other display unit is not viewed at the same time when either one of them is viewed, or the sub-monitor device 46 is arranged at a position such that there is a case it can be viewed from a position where the main monitor device 44 is cannot viewed due to a change in an aspect of the disaster prevention reception panel 10.

SELECTED DRAWING: Figure 4

COPYRIGHT: (C)2022,JPO&INPIT

Description

The present invention relates to a disaster prevention system that monitors an abnormality in a disaster prevention monitoring area by connecting a terminal device such as a reporting device or a detector installed corresponding to the disaster prevention monitoring area to a disaster prevention receiving panel.

Conventionally, emergency facilities have been installed in tunnels such as automobile-only roads, which are disaster prevention monitoring areas, in order 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 extinguishing plug 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. is doing.

The tunnel disaster prevention system consisting of the disaster prevention receiver and the terminal equipment is roughly classified into the R type transmission system and the 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 Japanese Unexamined Patent Publication No. 2014-157435 Japanese Unexamined Patent Publication No. 2008-14362 Japanese Unexamined Patent Publication No. 2003-281639 Japanese Unexamined Patent Publication No. 2014-26450

In such a conventional P-type direct 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 signal reception is due to 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 close 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, in the conventional current monitoring function, when the current value for each signal line obtained by the constant cycle measurement deviates from the threshold range determined by the predetermined upper limit value and lower limit value, it is determined that the current value is abnormal and an alarm is given. However, it is assumed that fluctuations in the current value due to insulation deterioration of the signal line appear before the current value abnormality is determined, and it is necessary to know the signs of such current value abnormality at an early stage. If this is possible, it is expected that the current value will become abnormal in the near future, and it will be possible to prepare appropriate measures from an early stage.

In addition, 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.

The present invention is a disaster prevention system that integrates the functions of a current monitoring device into a disaster prevention receiver to simplify the equipment configuration and processing, and also catches a sign of an abnormality in the current value of a signal line and enables an alarm. The purpose is to provide.

(Disaster prevention system 1)
The present invention is a disaster prevention system that outputs an alarm based on a predetermined signal transmitted from a terminal device arranged corresponding to a disaster prevention monitoring area via a signal line and received by a disaster prevention receiver.
Based on the current value flowing in the signal line, it is equipped with a control unit that determines the sign of the current value abnormality in the current value flowing in the signal line and the sign of the current value abnormality in which the occurrence of the current value abnormality is predicted.
The disaster prevention receiver is
At least with the first display unit that displays that the current value is abnormal when the control unit determines the current value abnormality, and displays that the current value abnormality is a sign alarm when the control unit determines the sign of the current value abnormality. ,
At least for the signal line judged by the control unit as a current value abnormality or a sign of a current value abnormality, the fact that the current value is abnormal or a sign of a current value abnormality according to the judgment result, and the current value that is the source of the judgment result The second display unit that displays
With
The first display unit and the second display unit are arranged so as to have a mutual positional relationship in which when one of the display units is visually recognized, the other display unit may not be visually recognized at the same time. It is a feature.

(Disaster prevention system 2)
The present invention is a disaster prevention system that outputs an alarm based on a predetermined signal transmitted from a terminal device arranged corresponding to a disaster prevention monitoring area via a signal line and received by a disaster prevention receiver.
Based on the current value flowing in the signal line, it is equipped with a control unit that determines the sign of the current value abnormality in the current value flowing in the signal line and the sign of the current value abnormality in which the occurrence of the current value abnormality is predicted.
The disaster prevention receiver is
At least with the first display unit that displays that the current value is abnormal when the control unit determines the current value abnormality, and displays that the current value abnormality is a sign alarm when the control unit determines the sign of the current value abnormality. ,
At least for the signal line judged by the control unit as a current value abnormality or a sign of a current value abnormality, the fact that the current value is abnormal or a sign of a current value abnormality according to the judgment result, and the current value that is the source of the judgment result The second display unit that displays
With
The second display unit is characterized in that it is arranged at a position where there is a case where the first display unit can be visually recognized even from a position where the first display unit cannot be visually recognized due to a change in the mode of the disaster prevention receiving panel.

(Arrangement of first display unit and second display unit)
The housing of the disaster prevention receiver is provided with a door that can be opened and closed by rotating around the front of the housing.
The first display unit is arranged at a position where it can be visually recognized from the front of the housing when the door is closed.
The second display unit is arranged inside the housing on the back surface side of the door when the door is closed, at a position where the first display unit may be visually recognized from a position where the first display unit is not visible when the door is opened.

(Basic effect)
The present invention is a current flowing through a signal line in a disaster prevention system that outputs an alarm based on a predetermined signal transmitted from a terminal device arranged corresponding to the disaster prevention monitoring area via a signal line and received by a disaster prevention receiver. Based on the value, it is equipped with a control unit that determines the current value abnormality of the current value flowing in the signal line and the sign of the current value abnormality, which is a state in which the occurrence of the current value abnormality is predicted. A first display unit that displays that the current value is abnormal when the current value abnormality is determined, and displays that the current value abnormality is a sign alarm when the sign of the current value abnormality is determined, and at least the control unit. Displays the fact that the current value is abnormal or the sign of the current value abnormality, and the current value that is the source of the judgment result, according to the judgment result, for the signal line judged to be the current value abnormality or the sign of the current value abnormality. Since it is equipped with a second display unit, it is possible to know the sign of current value abnormality before the current value abnormality due to insulation deterioration of the signal line is determined and warned, and in the near future, current value abnormality will occur. It is possible to grasp the problem that the possibility of being judged is high and take appropriate measures.

In addition, when the control unit is provided in the disaster prevention receiving board, the function of the current monitoring device provided in the separate housing is provided integrally with the disaster prevention receiving board, so that the current monitoring device is provided in the separate housing. Compared to the above, the equipment configuration and processing are simpler, and the installation space can be reduced.

(Effect of arranging the first display unit and the second display unit)
Further, are the first display unit and the second display unit arranged so as to have a mutual positional relationship in which there is a case where the other display unit is not visually recognized at the same time when one of the display units is visually recognized? , The second display unit is arranged at a position where the first display unit may be visible even from a position where the first display unit cannot be visually recognized due to a change in the mode of the disaster prevention receiving panel. More specifically, the disaster prevention receiving unit is arranged. The housing of the board is provided with a door that can be opened and closed by rotating around the front of the housing, and the first display unit is arranged at a position that can be visually recognized from the front of the housing when the door is closed. The display unit 2 is arranged inside the housing on the back side of the door when the door is closed, at a position where the first display unit may be visually recognized from a position where the first display unit is not visible when the door is opened. Therefore, when the control unit determines a sign of current value abnormality or current value abnormality, the first display unit knows the sign of current value abnormality or current value abnormality, and the determination result displayed on the screen on the second display unit. By looking at the measurement results of the current value and the current value, it is possible to know the detailed information of the signal line determined to be a sign of current value abnormality or current value abnormality, and it is necessary to select the display unit to be viewed according to the required information. Enables coping. Further, are the first display unit and the second display unit arranged so as to have a mutual positional relationship in which the first display unit may not be visually recognized at the same time when the second display unit is visually recognized? , The second display unit is arranged at a position where the first display unit may be visible even from a position where the first display unit cannot be visually recognized due to a change in the mode of the disaster prevention receiving panel. Therefore, only one display unit is confirmed. The existence of a possible position makes it possible to confirm only the display of the display unit to be confirmed.

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 sub monitor device can be seen. 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 Explanation diagram showing the measurement recording screen of the sub-monitor device that displays the measurement history by regular cycle measurement Explanatory drawing showing another embodiment of the disaster prevention receiving panel provided with the graphic panel, the display panel and the operation panel on the front door panel. Explanatory drawing showing by taking out the display panel of FIG.

[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.

A disaster prevention receiver 10 is installed at a monitoring center or the like of the up line tunnel 1a and the down line tunnel 1b. In addition to the disaster prevention monitoring function of the up 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 12-1 to 12-n are pulled out from the disaster prevention receiving panel 10 in each of the predetermined sections divided in the longitudinal direction of the tunnel in the up line tunnel 1a and the down line tunnel 1b, and are provided in each section. A plurality of fire hydrant valve open / close detection switches 14 and a manual notification device 16 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 12-1 to 12-n 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 extinguishing valve 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 monitor device]
FIG. 2 is an explanatory view showing the appearance of the disaster prevention receiver, FIG. 2 (A) shows the front surface, and FIG. 2 (B) 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 sub monitor device can be seen.

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 60 opened in the front-rear direction, and also on the back surface of the housing 60. , A back door 63 that can be opened and closed by a bundle operation is provided.

A main monitor device 44 using a liquid crystal display with a touch panel is installed on the front side of the panel door 62, and an operation display unit 64 is arranged below the main monitor device 44. Predetermined information regarding tunnel disaster prevention monitoring is displayed on the screen of the main monitor device 44.

Inside the housing 60, a sub-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 sub-monitor device 46 arranged on the support frame 68 appears in the housing 60, and the current value of the signal line is measured on the screen of the sub-monitor device 46. The result and the judgment result can be displayed.

[Disaster prevention receiver configuration]
FIG. 4 is a block diagram showing an outline of the functional configuration of the tunnel disaster prevention system. As shown in FIG. 4, the disaster prevention receiver 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 main monitor device 44 and a sub-monitor device. 46, an alarm unit 48 equipped with a speaker, a buzzer, an alarm indicator light, etc., a display unit 50 equipped with various indicator lights, an operation unit 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 and the current monitoring unit 58 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 a fire hydrant device 18 installed in a tunnel. Performs predetermined monitoring and control based on signals and operation signals.

Further, when the monitoring control unit 56 receives a fire notification signal (fire signal) by the operation of the manual notification device 16 provided in the fire hydrant device 18, for example, the alarm unit 48 sounds the main sound and the display unit 50 displays the fire representative. The display is performed, and further, a fire display and a manual notification section display are performed on the screen of the main monitor device 44, and a response signal is transmitted to the fire hydrant device 18 to control the lighting of the response lamp.

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, as control for other equipment, the monitoring control unit 56 transmits a fire notification signal to the remote monitoring control equipment 26 via the IG slave station equipment 24 to give an alarm, and the TV monitoring equipment 34 displays the manual notification section. , The alarm display board equipment 30 controls to display the fire report of the manual report section, the ventilation facility 28 controls to ventilate the manual report section, the lighting equipment 36 controls to illuminate the manual report section, and the like.

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 the disconnection failure is detected, the alarm unit 48 sounds the failure sound and the display unit 50 displays the failure representative, and the main monitor device 44 The failure display and the failure area are displayed on the screen of, and further, the current monitoring unit 58 is controlled to notify the line number of the failure line.

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

(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 sub monitor 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 sub monitor device 46.

In the manual measurement of the current value by the current monitoring unit 58, when a manual measurement operation including selection of a signal line by the sub monitor 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 sub monitor device 46.

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

Further, when the current monitoring unit 58 detects the abnormality history display operation by the sub monitor device 46, the current monitoring unit 58 extracts the measurement history in which the current value abnormality is determined from the measurement history of the current value stored in the memory, and the sub monitor 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 receiving panel 10 is provided when the measured current value changes significantly beyond a predetermined change usually expected within a predetermined threshold range for determining a current value abnormality. , Controls to determine the sign of an abnormal current value and 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 main monitor device 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 sub monitor device 46. At the same time, 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 targeted for a sign alarm are displayed.

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. 5 is a graph showing a sign determination of a current value abnormality by setting a sign threshold range. FIG. 5 shows, for example, the diurnal change of the current value of the measurement history obtained by the fixed cycle measurement from the present day (1 day) to 18 days before that. A lower limit value Is1 and an upper limit value Is4 for determining a current value abnormality are set for such a current value measurement history, and a current value is within the range of the threshold range Is1 to Is4 for determining a 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. 5, 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. 5, 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.

(Determining the sign of current value abnormality based on the difference from the average current)
FIG. 6 is a graph showing a sign determination of a current value abnormality due to a difference from the average current. As shown in FIG. 6, 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. A sign of current value abnormality when the difference ΔI between the measured current value Ii and the average current value Ia increases or decreases beyond a predetermined threshold change amount ΔIth on condition that the current value is within the threshold range Is1 to Is4. Is determined and control is performed to output a sign alarm.

In FIG. 6, 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 threshold change amount ΔIth. Therefore, the current monitoring unit With respect to the measured current value, 58 determines a sign of an abnormality in the current value and outputs a sign alarm.

(Determination of a sign of current value abnormality due to the difference from the current value measured last time)
FIG. 7 is a graph showing a sign determination of a current value abnormality due to a difference from the current value measured in the previous measurement. As shown in FIG. 7, the current monitoring unit 58 determines 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 increases or decreases beyond a predetermined threshold value change amount 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.

(Display of measurement recording screen by sub monitor)
FIG. 8 is an explanatory diagram showing a measurement recording screen of the sub-monitor 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. 8, when a representative display of a sign alarm of a current value abnormality is displayed on the screen of the main monitor device 44 on the sub monitor screen 70, as shown in FIG. 3, the panel door 62 is opened and the sub monitor is displayed. When a predetermined screen operation is performed by the device 46, the measurement recording screen 72 is displayed by reading out the measurement history measured and stored by the constant cycle measurement.

On the right side of the measurement recording screen 72, a page display 74, page switching buttons 76 and 78, a file save button 80, and a memory eject button 82 are arranged.

By operating the page switching buttons 76 and 78, the page of the measurement history detailed information 84 can be switched. The file save button 80 instructs the memory storage of the measurement result. The memory eject button 82 is operated when ejecting the memory storing the current value measurement information from the disaster prevention receiving panel 10.

The measurement history detailed information 84 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.

[Other embodiments of disaster prevention receiver]
FIG. 9 is an explanatory view showing another embodiment of the disaster prevention receiving panel provided with a graphic panel, a display panel, and an operation panel on the front door panel, and FIG. 10 is an explanatory view showing the display panel of FIG. 9 taken out. ..

As shown in FIG. 9, in the disaster prevention receiving board 10 of the present embodiment, the panel door 62 has a graphic panel 86 instead of the main monitor device 44 provided in the disaster prevention receiving board 10 of FIGS. 2 and 3. A display panel 88 and an operation panel 90 are provided.

A tunnel system diagram is displayed on the graphic panel 86, and the system diagram divides the inside of the tunnel into P-type signal lines and arranges fire hydrants and compartment indicator lights of a manual notification device. Further, the operation panel 90 is provided with an operation switch and an emergency telephone necessary for tunnel disaster prevention monitoring.

As shown in FIG. 10, the display panel 88 is arranged with various indicator lights necessary for disaster prevention monitoring, and the current monitoring device is being measured in response to the current monitoring function provided in the disaster prevention receiver panel 10. A light 92, a current monitoring device failure light 94, a manual notification current value abnormality light 96, a manual notification current value abnormality sign light 98, a fire extinguisher current value abnormality light 100, and a fire extinguisher current value abnormality sign light 102 are provided.

The functional configuration of the disaster prevention receiving board 10 according to the present embodiment has the same function except that the main monitor device 44 is removed from the functional configuration of the disaster prevention receiving board 10 shown in FIG. Therefore, when the current monitoring unit of the disaster prevention receiver 10 determines a sign of an abnormality in the current value based on the above-mentioned (1) to (3) with respect to the current value of, for example, the manual notification device measured by the constant cycle measurement, The manual notification current value abnormality sign lamp 98 provided on the display panel shown in FIG. 10 is turned on to display the sign of the current value abnormality as a representative together with the output of a predetermined alarm sound, and based on this, as shown in FIG. 8, the sub monitor The detailed information of the sign of the current value abnormality can be displayed on the screen of the device 46.

Further, when the current monitoring unit of the disaster prevention receiver 10 determines that the current value is abnormal with respect to the current value of, for example, the manual notification device measured by the constant cycle measurement, the manual notification current provided on the display panel shown in FIG. The value abnormality lamp 96 is turned on to display the current value abnormality as a representative together with the output of a predetermined alarm sound, and based on this, as shown in FIG. 8, the detailed information of the current value abnormality can be displayed on the screen of the sub monitor device 46. can.

[Modification of the present invention]
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, 12-1 to 12-n: Signal line 14: Fire hydrant valve open / close detection switch 16: Manual notification device 18: Fire hydrant device 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 unit 42, 54: P type Transmission unit 44: Main monitor device 46: Sub monitor device 48: Alarm unit 52: Operation unit 56: Monitoring control unit 58: Current monitoring unit 60: Housing 62: Panel door 70: Sub monitor screen 72: Measurement recording screen 86: Graphic panel 88: Display panel 90: Operation panel 96: Manual notification current value abnormality light 98: Manual notification current value abnormality sign light 100: Fire hydrant current value abnormality light 102: Fire hydrant current value abnormality sign light

Claims (3)

In a disaster prevention system that outputs an alarm based on a predetermined signal transmitted from a terminal device arranged corresponding to the disaster prevention monitoring area via a signal line and received by a disaster prevention receiver.
A control unit for determining a sign of a current value abnormality of the current value flowing through the signal line and a sign of a current value abnormality in a state in which the occurrence of the current value abnormality is predicted based on the current value flowing through the signal line is provided.
The disaster prevention receiver is
At least, when the control unit determines the current value abnormality, it displays that the current value is abnormal, and when it determines the sign of the current value abnormality, it displays that it is a sign of the current value abnormality. Display and
At least for the signal line determined by the control unit to be the current value abnormality or a sign of the current value abnormality, the fact that the current value abnormality is present or the sign of the current value abnormality is determined according to the determination result, and the determination result. A second display that displays the original current value,
With
The first display unit and the second display unit are arranged so as to have a mutual positional relationship in which when one of the display units is visually recognized, the other display unit may not be visually recognized at the same time. A disaster prevention system featuring.
In a disaster prevention system that outputs an alarm based on a predetermined signal transmitted from a terminal device arranged corresponding to the disaster prevention monitoring area via a signal line and received by a disaster prevention receiver.
A control unit for determining a sign of a current value abnormality of the current value flowing through the signal line and a sign of a current value abnormality in a state in which the occurrence of the current value abnormality is predicted based on the current value flowing through the signal line is provided.
The disaster prevention receiver is
At least, when the control unit determines the current value abnormality, it displays that the current value is abnormal, and when it determines the sign of the current value abnormality, it displays that it is a sign of the current value abnormality. Display and
At least for the signal line determined by the control unit to be the current value abnormality or a sign of the current value abnormality, the fact that the current value abnormality is present or the sign of the current value abnormality is determined according to the determination result, and the determination result. A second display that displays the original current value,
With
The disaster prevention system is characterized in that the second display unit is arranged at a position where the first display unit may be visible even from a position where the first display unit cannot be visually recognized due to a change in the mode of the disaster prevention receiving panel. ..
The disaster prevention system according to claim 1 or 2.
The housing of the disaster prevention receiver is provided with a door that can be opened and closed by rotating around the front of the housing.
The first display unit is arranged at a position where it can be visually recognized from the front of the housing when the door is closed.
The second display unit may be visually recognized inside the housing, which is the back surface side of the door when the door is closed, from a position where the first display unit is not visible when the door is opened. A disaster prevention system characterized by being placed in a position.

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