JP6900206B2 - Tunnel disaster prevention system - Google Patents

Description

The present invention relates to a fire detector connected to a signal line drawn from a disaster prevention receiver to monitor a fire in a tunnel.

Conventionally, in tunnels such as automobile-only roads, in order to protect people and vehicles from fire accidents that occur in the tunnel, a fire detector that monitors the fire is installed and connected to the signal line drawn from the disaster prevention receiver. ing.

The fire detector has detection areas in both the left and right directions, and the detection areas with the adjacent fire detectors overlap each other along the longitudinal direction of the tunnel, for example, at intervals of 25 m or 50 m. They are arranged continuously at intervals.

In addition, the fire detector monitors the radiation from the fire flame generated in the tunnel through the translucent window, for example, infrared rays, and in order to monitor the sensitivity of the light receiving element in order to maintain the flame monitoring function. We are conducting a sensitivity test and a dirt test to monitor the dirt on the translucent window.

In the sensitivity test of the light receiving element, when the test signal periodically transmitted from the disaster prevention receiver is received, the test light corresponding to the light from the pseudo flame is incident on the light receiving element from the test light source to receive the light receiving sensitivity. Is detected, and the light receiving value is corrected with a correction value that is the inverse of the detection sensitivity until the light receiving sensitivity drops to a predetermined threshold value, and the detection sensitivity drops to a predetermined sensitivity threshold value, making correction impossible. In this case, a failure signal of the light receiving element is transmitted to the disaster prevention receiving panel to output a sensor failure alarm. Further, a higher warning sensitivity threshold value is set with respect to the sensitivity threshold value, and when the detection sensitivity falls below the warning sensitivity threshold value, a warning warning of sensitivity abnormality is output.

In the stain test of the translucent window, when the test signal periodically transmitted from the disaster prevention receiver is received, the test light is incident on the translucent window from the test light source provided outside the fire detector. The light receiving element receives light to obtain the dimming rate, and when the dimming rate exceeds a predetermined dirt threshold value, a dirt abnormality signal is transmitted to the disaster prevention receiving panel to output a dirt alarm. Further, a warning dirt threshold lower than the dirt threshold is set, and when the dimming rate exceeds the dirt warning threshold, a warning of dirt abnormality is output.

Japanese Unexamined Patent Publication No. 6-325271 Japanese Unexamined Patent Publication No. 2002-246962 Japanese Unexamined Patent Publication No. 11-128381

However, in such a conventional fire detector test, it is not possible to detect a failure other than a failure of the light receiving element and its signal processing circuit due to a lightning strike or a stain on the translucent window, and the operation period is long. If it becomes long, the fire detector often suddenly malfunctions in a state where it seems that it is operating normally without detecting sensor failure by sensitivity test or dirt abnormality by dirt test. Therefore, there is a risk that the reliability of the tunnel disaster prevention system cannot be ensured.

An object of the present invention is to provide a tunnel disaster prevention system that monitors an abnormality of a fire detector that cannot be judged by a sensitivity test or a dirt test and can notify the abnormality before it causes a malfunction.

(Tunnel disaster prevention system)
The present invention is a tunnel disaster prevention system in which a fire detector is connected to a disaster prevention receiver to monitor a fire.
It is equipped with an abnormality determination unit that determines each of a failure abnormality that is a failure state of the internal circuit of the fire detector and a deterioration abnormality that is recognized as a deterioration state before the failure abnormality of the fire detector.
The abnormality determination unit is characterized in that the deterioration abnormality is determined so that the location where the deterioration abnormality has occurred can be identified from a plurality of locations of the internal circuit to be determined for the deterioration abnormality.
More specifically, the internal circuit of the fire detector is divided into circuit blocks for each function.
Abnormality determining unit, when at least one of either the internal voltage or current consumption of the circuit block is out of the predetermined range, determining the possible degradation abnormality identifying the circuit blocks.
Further, the fire detector includes a display unit that displays the deterioration abnormality when the abnormality determination unit determines the deterioration abnormality.
Also, the fire detector
In addition to being arranged so that the detection ranges of adjacent fire detectors overlap
It is provided with a first fire detection unit that monitors one side of adjacent fire detectors in an arranged state and a second fire detection unit that monitors the other side that is opposite to one side.
The abnormality determination unit determines the deterioration abnormality by distinguishing between the deterioration abnormality of the first fire detection unit and the deterioration abnormality of the second fire detection unit.
Deterioration abnormality is determined by a predetermined fire detector, and when there is no abnormality including deterioration abnormality in the fire detector whose detection range overlaps with the fire detector for which the deterioration abnormality is determined, the fire detection in which the deterioration abnormality is determined Do not use the fire detection result of the vessel in the fire judgment.
In addition, the deterioration abnormality is notified including the part of the internal circuit of the fire detector identified as the deterioration abnormality.
Further, in another embodiment of the present invention, a tunnel disaster prevention system that monitors a fire by connecting a fire detector that detects a fire based on radiation incident on a light receiving element through a translucent window to a disaster prevention receiver. In
Equipped with an abnormality judgment unit that determines the deterioration abnormality that is recognized as the deterioration state before the failure abnormality that is the failure state of the internal circuit of the fire detector.
The abnormality judgment unit
First information for determining deterioration abnormality other than stains on a translucent window acquired during a stain test in which test light is incident on a light receiving element through a translucent window to detect stains on the translucent window. And or
Based on the second information for determining deterioration abnormality other than the light receiving sensitivity of the light receiving element acquired at the time of the sensitivity test in which the test light is incident on the light receiving element without passing through the translucent window to detect the light receiving sensitivity of the light receiving element. hand,
It is characterized by determining deterioration abnormality.

(Judgment of deterioration abnormality by fire detector)
The abnormality judgment unit is provided in the fire detector,
The fire detector transmits a deterioration abnormality signal to the disaster prevention receiver when the abnormality determination unit determines the deterioration abnormality.
When the disaster prevention receiver receives a deterioration abnormality signal from the fire detector, the disaster prevention receiver notifies the deterioration abnormality of the fire detector.

(Judgment of deterioration abnormality on the disaster prevention control panel)
The abnormality judgment unit is provided on the disaster prevention receiver.
The fire detector transmits the measurement results related to the internal circuit to the abnormality judgment unit of the disaster prevention receiver.
The abnormality judgment unit judges the deterioration abnormality based on the measurement result received from the fire detector, and determines the deterioration abnormality.
Disaster receiving plate, the abnormality determination unit when determining abnormality degradation, reports the degradation abnormality of the fire detector.

(Notice of deterioration abnormality)
The abnormality determination unit determines a notice of deterioration abnormality when it is recognized that a decrease in at least one of the internal voltage and the current consumption or an increase in the current consumption is within a predetermined range in the previous stage leading to the determination of the deterioration abnormality. Then, the disaster prevention receiver is notified of the deterioration abnormality notice of the fire detector.

(Change threshold setting)
The disaster prevention receiver changes the threshold value of the abnormality determination unit, which is a reference when recognizing the deterioration abnormality and / or the deterioration abnormality, based on a predetermined setting operation.

(Measurement of power supply voltage and power supply current of power supply unit)
Fire detector measures at least one of power supply voltage or power supply current is output for each circuit block from the power supply unit, as at least one of the internal voltage or current consumption of each circuit block.

(Measurement of power supply voltage and power supply current during detector test)
Fire detector measures at least one of power supply voltage or power supply current is output for each circuit block from the power supply unit when the detector test, as at least one of the internal voltage or current consumption of each circuit block.

( Measurement by test signal )
The disaster prevention receiver sends a test signal to the fire detector at a predetermined operation or at a predetermined cycle, and the disaster prevention receiver sends a test signal to the fire detector.
Fire detector, when receiving a test signal from the disaster prevention receiver to measure at least one of the internal voltage or current consumption of each circuit block of the own vessel.

(Measurement of average voltage and average current for each circuit block)
Fire detectors, during the implementation of the test based on the test start signal, at least one of the internal voltage or the at least one measured every predetermined cycle average voltage or average current consumption current of each circuit block Ask.

(Basic effect)
The present invention is a tunnel disaster prevention system in which a fire detector is connected to a disaster prevention receiver to monitor a fire, before the failure abnormality which is a failure state of the internal circuit of the fire detector and the failure abnormality of the fire detector. It is equipped with an abnormality determination unit that determines each of the deterioration abnormalities recognized as the deterioration state of the above, and the abnormality determination unit can identify the location where the deterioration abnormality has occurred from a plurality of locations of the internal circuit to be determined for the deterioration abnormality. It is characterized by determining deterioration abnormality, and more specifically, the internal circuit of the fire detector is divided into circuit blocks for each function, and the abnormality determination unit consumes or consumes the internal voltage of any of the circuit blocks. When at least one of the currents is out of the specified range , the circuit block can be identified and the deterioration abnormality is determined . Therefore, as the operating period of the system becomes longer, the circuit part of the fire detector ages. As the deterioration progresses and the circuit function deteriorates, a change appears in which the internal voltage and / or current consumption measured in the test state that creates a pseudo fire detection state decreases, and the internal voltage and current consumption during such a test It is possible to judge the progress of circuit deterioration from the deterioration and notify the deterioration abnormality before the malfunction occurs, and replace the fire detector causing the deterioration abnormality with a spare fire detector before the malfunction occurs. Even if the system deteriorates over time, the reliability of fire monitoring can be continuously maintained. In addition, it is possible to identify the location where the deterioration is abnormal.

(Effect of judging deterioration abnormality with fire detector)
Further, the abnormality determination unit is provided in the fire detector, and when the abnormality determination unit determines the deterioration abnormality , the fire detector is used, for example, at least one of the internal voltage and the current consumption of any of the circuit blocks of the own unit. When a predetermined decrease or a predetermined increase in the current consumption is observed, the deterioration abnormality is judged and the deterioration abnormality signal is transmitted to the disaster prevention receiver, and the disaster prevention receiver receives the deterioration abnormality signal from the fire detector. In addition, since the deterioration abnormality of the fire detector is notified, it is possible to judge the progress of circuit deterioration from the decrease in internal voltage and current consumption during the test and notify the deterioration abnormality before causing a malfunction. In addition, the processing load on the disaster prevention receiver can be reduced by determining the deterioration abnormality on the fire detector side.

(Effect of judging deterioration abnormality on the disaster prevention control panel)
Further, the abnormality determination section provided in the disaster prevention receiving board, fire detectors, the measurement results for the internal circuit, the disaster prevention receiving plate for example by measuring at least one of the internal voltage or current consumption of each circuit block of the own vessel transmitted to the abnormality determination section, the abnormality determining unit, the fire detector measurements received from, for example, in any given drop or supply current to at least one of the measurement results in which the internal voltage or current consumption of the circuit block When a predetermined increase is observed, the deterioration abnormality is judged, and when the abnormality judgment unit judges the deterioration abnormality, the disaster prevention receiver notifies the deterioration abnormality of the fire detector. Therefore, the inside at the time of the test. It is possible to judge the progress of circuit deterioration from the decrease in voltage and current consumption and notify the deterioration abnormality before causing a malfunction, and by judging the deterioration abnormality of the fire detector with the disaster prevention receiver, it deteriorates. It solves the problem that the deterioration judgment cannot be made normally with the advanced fire detector, and it is possible to surely judge the deterioration of the fire detector.

(Effect of notice of deterioration abnormality)
In addition, the abnormality determination unit gives a notice of deterioration abnormality when it is recognized that a decrease in at least one of the internal voltage and the current consumption or an increase in the current consumption is within a predetermined range in the previous stage leading to the determination of the deterioration abnormality. Since it is judged and the disaster prevention receiver is notified of the deterioration abnormality notice of the fire detector, the deterioration abnormality progress of the fire detector is notified by the notification of the deterioration abnormality before the deterioration abnormality is notified. degree can over time to determine, before the deterioration abnormality is issued, or prepare a fire detector for the exchange, it is possible to often a useful set up a proper schedule of exchange work.

(Effect of changing threshold setting)
Also, disaster prevention receiving board, based on a predetermined setting operation, the abnormality determination section, for which is adapted to change the reference becomes the threshold when deemed deteriorated abnormal and or degradation abnormality notice early degradation abnormal and or degradation abnormal If you want to notify the notice of deterioration, change the threshold value to a high value, and if you want to delay the notification of deterioration abnormality and / or the notice of deterioration abnormality, change the threshold value to a low value, if necessary. Make it possible.

(Effect of measuring the power supply voltage and power supply current of the power supply unit)
Also, fire detectors, because at least one of power supply voltage or power supply current is output for each circuit block from the power supply unit, and to measure the at least one internal voltage or current consumption of each circuit block, The degree of deterioration of the circuit part provided in the fire detector can be judged from the changes in the power supply voltage and power supply current.

(Effect of measuring power supply voltage and power supply current during detector test)
Further, the fire detector measures at least one of power supply voltage or power supply current is output for each circuit block from the power supply unit when the detector test, as at least one of the internal voltage or current consumption of each circuit block Therefore, the degree of deterioration can be determined for each circuit block during the detector test.

(Effect of measurement by test signal)
In addition, the disaster prevention receiver transmits a test signal to the fire detector at a predetermined operation or at a predetermined cycle, and the fire detector receives a test signal from the disaster prevention receiver for each circuit block of its own device. due to so as to measure at least one of the internal voltage or current consumption, it is possible to measure the internal voltage and the current consumption of an equivalent operational state and the detection state of a fire flame in sensitivity test and soiling test, the circuit portion The degree of deterioration can be judged more accurately.

(Effect of measuring average voltage and average current for each circuit block)
Also, fire detectors, during the performance of the test based on the test start signal, at least one of measuring the at least one of the internal voltage or current consumption of each circuit block for each predetermined cycle average voltage or average current Since one of them is calculated, the degree of deterioration can be judged more accurately without being affected by temporary changes in the internal voltage and current consumption during the test.

Explanatory diagram showing the outline of the tunnel disaster prevention system Block diagram showing the outline of the functional configuration of the disaster prevention receiver Explanatory drawing showing the appearance of the fire detector Block diagram showing the outline of the functional configuration of the fire detector Flowchart showing the control operation of the disaster prevention receiver Flow chart showing the control operation of the fire detector

[Overview of tunnel disaster prevention system]
FIG. 1 is an explanatory diagram showing an outline of the tunnel disaster prevention system. As shown in FIG. 1, an up line tunnel 1a and a down line tunnel 1b are constructed as tunnels for automobile-only roads.

Inside the up line tunnel 1a and the down line tunnel 1b, fire detectors 12 are installed at intervals of, for example, 25 meters or 50 meters along the wall surface in the longitudinal direction of the tunnel. The fire detector 12 has two sets of fire detection units, and has detection areas in both the ascending side and the descending side in the longitudinal direction of the tunnel, and is adjacent to the fire detectors arranged along the longitudinal direction of the tunnel. The detection areas are continuously arranged so as to complement each other, and the fire is detected by observing the radiation from the flame caused by the fire that occurred in the detection area, for example, infrared rays.

In addition, the up line tunnel 1a and the down line tunnel 1b are provided with a manual notification device and an emergency telephone for fire notification as emergency facilities, and a fire hydrant device for extinguishing a fire and preventing the spread of fire. In order to protect the tunnel frame and the inside of the duct from a fire, a water spray that sprinkles fire extinguishing water from the water spray head is installed, but the illustration is omitted.

From the disaster prevention receiver panel 10, the transmission lines 14a and 14b including the power supply line are pulled out from the up line tunnel 1a and the down line tunnel 1b to connect the fire detector 12, and the fire detector 12 is unique to each line. The address has been set.

For the disaster prevention receiver 10, the fire extinguishing pump equipment 16, the cooling pump equipment 18 for ducts, the IG slave station equipment 20, the ventilation equipment 22, the alarm display board equipment 24, the radio rebroadcasting equipment 26, and the television monitoring equipment 28. And lighting equipment 30 and the like are provided, and the other equipment is individually connected to the disaster prevention receiver 10 by a P-type signal line, except that the IG slave station equipment 20 is connected by a data transmission line. Here, the IG slave station equipment 20 is a communication equipment that connects the disaster prevention receiver 10 and the remote monitoring and control equipment 32, which is a higher-level equipment provided outside, via a network.

The ventilation equipment 22 is equipment that gives energy to the air in the tunnel by the high blowing wind speed operated by the jet fan installed on the ceiling side in the tunnel to generate a ventilation flow in the longitudinal direction of the tunnel.

The alarm display board equipment 24 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 26 is a facility for allowing a driver or the like to receive information from a road administrator in a tunnel. The TV monitoring equipment 28 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 30 is equipment for driving and managing the lighting equipment in the tunnel.

[Disaster prevention receiver]
FIG. 2 is a block diagram showing an outline of the functional configuration of the disaster prevention receiver. As shown in FIG. 2, the disaster prevention receiving panel 10 includes a panel control unit 34, and the panel control unit 34 is a function realized by, for example, executing a program. Hardware includes a CPU, a memory, various input / output ports, and the like. Use a computer circuit or the like equipped with.

Transmission units 36a and 36b are provided for the panel control unit 34, and a plurality of fire detectors 12 installed in the up line tunnel 1a and the down line tunnel 1b are provided in the transmission lines 14a and 14b drawn from the transmission units 36a and 36b, respectively. It is connected.

Further, the panel control unit 34 has an alarm unit 38 equipped with a speaker, an alarm indicator, etc., a display unit 40 equipped with a liquid crystal display, a printer, etc., an operation unit 42 equipped with various switches, and an IG that communicates with external monitoring equipment. A modem 44 for connecting the slave station equipment 20 is provided, and further, the fire extinguishing pump equipment 16, the cooling pump equipment 18, the ventilation equipment 22, the alarm display board equipment 24, the radio rebroadcasting equipment 26, the television monitoring equipment 28, and the television monitoring equipment 28 shown in FIG. An IO unit 46 to which the lighting equipment 30 is connected is provided.

The panel control unit 34 repeatedly transmits a call signal including a poll command instructing the transmission units 36a and 36b to sequentially specify the address of the fire detector 12, and the fire detector 12 is a call signal matching its own address. Is received, a response signal including self-state information such as fire detection and test results is returned.

Further, when a fire is detected by receiving a response signal from the fire detector 12, the panel control unit 34 of the disaster prevention receiving panel 10 outputs a fire alarm by the alarm unit 38 and interlocking control of other equipment via the IO unit 46. Control to instruct.

Further, the panel control unit 34 transmits a test signal in which a test instruction command in which the address of the fire detector 12 is sequentially specified is set at a predetermined cycle at the time of system startup or during operation, and transmits the test signal to the fire detector 12. Sensitivity test, stain test and deterioration test are performed, and control is performed to respond to each test result. Further, by performing a test operation in which the address of the specific fire detector 12 is designated by the operation unit 42, a test signal can be transmitted to each fire detector to perform the test.

Further, when the panel control unit 34 receives the response signal of the sensitivity abnormality warning obtained by the sensitivity test of the fire detector 12, the panel control unit 34 gives a warning sound of the sensitivity abnormality that specifies the address of the fire detector to the alarm sound of the display unit 40. Controls to notify by display and printing.

Also, if the panel controller 34 receives a response signal more resulting sensor failure sensitivity testing of fire detectors 12, the warning sound of the display unit 40 a sensor fault alarm identifying the address of the fire detector, the display displaying , Controls to notify by printing.

Further, when the panel control unit 34 receives the dirt abnormality warning signal obtained by the dirt test of the fire detector 12, the panel control unit 34 gives a warning sound of the dirt abnormality specifying the address of the fire detector 12 and displays the warning sound of the display unit 40. , Controls to notify by printing.

Further, when the panel control unit 34 receives the response signal of the stain abnormality obtained by the stain test of the fire detector 12, the panel control unit 34 issues a stain alarm specifying the address of the fire detector by the alarm sound of the display unit 40, the display, and the printing. Controls to notify by.

Further, when the panel control unit 34 receives the response signal of the deterioration abnormality warning obtained by the deterioration test of the fire detector 12, the panel control unit 34 gives a warning sound of the deterioration abnormality that specifies the address of the fire detector to the alarm sound of the display unit 40. Controls to notify by display and printing.

Further, when the panel control unit 34 receives the response signal of the deterioration abnormality obtained by the deterioration test of the fire detector 12, the panel control unit 34 issues a deterioration abnormality alarm specifying the address of the fire detector by the alarm sound of the display unit 40, the display display, and the display. Controls to notify by printing.

Further, when the panel control unit 34 receives the response signal of the warning, failure, or abnormality obtained by the sensitivity test, the dirt test, and the deterioration test of the fire detector 12, the IG slave station shown in FIG. 1 is displayed from the modem 44. It is transmitted to the remote monitoring and control equipment 32 via the equipment 20 to perform control to notify a warning alarm, a failure alarm, or an abnormality alarm.

Further, the panel control unit 34 has a threshold value and a sensitivity for determining a sensitivity abnormality, a dirt abnormality, and a deterioration abnormality set in the fire detector 12 based on the operation of the operation unit 42 using the display of the display unit 40. Control is performed to change the notice threshold value for judging the notice of abnormality, dirt abnormality, and deterioration abnormality. The control for changing the threshold value and the warning threshold value can change the threshold value or the warning threshold value of the fire detector 12 all at once, or can change the threshold value or the warning threshold value of a specific fire detector 12 by designating an address. You can also.

In the following description, the transmission lines 14a and 14b and the transmission units 36a and 36b may be referred to as the transmission line 14 and the transmission unit 36 when it is not necessary to distinguish them.

[Fire detector]
(Appearance of fire detector)
FIG. 3 is an explanatory diagram showing the appearance of the fire detector, and FIG. 4 is a block diagram showing an outline of the functional configuration of the fire detector.

As shown in FIG. 3, in the fire detector 12, two sets of translucent windows 50R and 50L are provided on the left and right sides of the sensor storage portion 51 provided in the upper part of the housing 49, and the translucent windows 50R are provided. , A sensor unit is arranged in each of the 50L. Further, two sets of translucent windows for test light sources 52R in which an external test light source used for a stain test of the translucent windows 50R and 50L are housed in a position near the translucent windows 50R and 50L where the sensor unit can be seen. , 52L is provided.

In the following description, the translucent window 50R may be referred to as a right-eye translucent window 50R, and the translucent window 50L may be referred to as a left-eye translucent window 50L.

(Outline configuration of fire detector)
As shown in FIG. 4, the fire detector 12 includes a detector control unit 54, a transmission unit 56, a power supply unit 58, two sets of left and right fire detection units 60R and 60L, a test light emission drive unit 72, and a sensitivity test. Internal test light sources 74R and 75R, internal test light sources 74L and 75L, and external test light sources 76R and 76L used for a stain test are provided. In the following description, the fire detection unit 60R may be referred to as a right eye fire detection unit 60R, and the fire detection unit 60L may be referred to as a left eye fire detection unit 60L.

The detector control unit 54 is a function realized by executing a program, for example, and uses a computer circuit or the like provided with a CPU, a memory, various input / output ports, etc. as hardware.

The transmission unit 56 is connected to the transmission unit 36 of the disaster prevention receiving panel 10 shown in FIG. 2 by the serial transmission line S and the serial transmission common line SC of the transmission line 14, and transmits and receives various signals by serial transmission.

The power supply unit 58 receives power from the disaster prevention receiving panel 10 shown in FIG. 2 by the power supply line B and the power supply common line BC included in the transmission line 14, for example, the detector control unit 54, the transmission unit 56, and two sets of fires on the left and right. Predetermined power supply voltages Vcc1 to Vcc 5 are supplied separately for the circuit blocks serving as the detection units 60R and 60L and the test light emission drive unit 72.

Here, the power supply voltage Vcc1 is supplied to the transmission unit 56, the power supply voltage Vcc2 is supplied to the detector control unit 54, the power supply voltage Vcc3 is supplied to the fire detection unit 60R, and the power supply voltage Vcc4 is supplied to the fire detection unit 60L. , The power supply voltage Vcc 5 is supplied to the test light emitting drive unit 72.

A voltage / current detection unit 78 is individually provided in the power supply line from the power supply unit 58 to each circuit block, detects the power supply voltage and the current consumption for each circuit block, and outputs the voltage / current to the detector control unit 54. The voltage-current detection unit 78 directly takes out the voltage of the power supply line for voltage detection, inserts and connects a low resistor for current detection to the power supply line for current detection, and takes out the voltage across the power supply line as the current detection voltage. ..

Internal test light sources 74R, 75R, 74L, 75L used for the sensitivity test are connected to the test light emitting drive unit 72, and external test light sources 76R, 76L used for the dirt test are connected, and LEDs are provided as light emitting elements, respectively. ing.

(Fire detection unit)
The fire detection units 60R and 60L include sensor units 64 and 68 and amplification processing units 66 and 70. For example, taking the right eye fire detection unit 60R as an example, the right eye translucent window 50R provided on the detector cover is arranged on the front surface of the sensor units 64 and 68, and the right eye translucent window 50R is interposed through the right eye translucent window 50R. light energy from the outside of the detection area Te is incident on the sensor unit 64, 68.

The right eye fire detection unit 60R monitors a fire by, for example, a two-wavelength flame detection. The sensor unit 64 uses an optical wavelength bandpass filter to emit radiation of 4.4 to 4.5 μm, which is a resonance radiation band of _{CO 2} peculiar to flames, from the light energy incident through the right eye translucent window 50R. The energy of the radiation is detected by the light receiving sensor and photoelectrically converted, and then subjected to predetermined processing such as amplification by the amplification processing unit 66 to obtain a light receiving signal corresponding to the amount of energy. Output to the control unit 54.

The sensor unit 68 selectively transmits (passes) radiant energy of 5 to 6 μm from the light energy incident through the left eye translucent window 50L by an optical wavelength bandpass filter, and transmits (passes) the radiant energy by a light receiving sensor. After detecting the energy and performing photoelectric conversion, the amplification processing unit 70 performs a predetermined process such as amplification to obtain a light receiving signal corresponding to the amount of energy and outputs the signal to the detector control unit 54.

The amplification processing units 66 and 70 are provided with a preamplifier, a filter for passing the fluctuation frequency band of the flame, a power amplifier, and the like.

(Fire judgment)
The detector control unit 54 is provided with the function of the fire determination unit 80 as a function realized by executing the program. The fire judgment unit 80 determines the presence or absence of a flame by, for example, taking a relative ratio of the received light values (light received signal levels) output from the amplification processing units 66 and 70 of the right eye fire detection unit 60R and comparing them with a predetermined threshold value. When a fire is detected based on the determination that there is a flame, the transmission unit 56 is instructed to set the fire detection information in the response signal to the call signal matching the self-address and transmit it to the disaster prevention receiving panel 10. I do.

(Sensitivity test)
The detector control unit 54 is provided with the function of the sensitivity test unit 82 as a function realized by executing the program. The sensitivity test unit 82 operates when it receives a test signal with its own address specified from the disaster prevention receiver 10 via the transmission unit 56, and instructs the test light emission drive unit 72 to instruct the internal test light sources 74R, 75R, The 74L and 75L are driven to emit light in order to perform a sensitivity test of the fire detection units 60R and 60L.

For example, taking the sensitivity test of the circuit system of the sensor unit 64 and the amplification processing unit 66 in the right eye fire detection unit 60R as an example, the test light emission driving unit 72 emits light by driving the internal test light sources 74R and 75R to generate a fire flame. A corresponding flame pseudo light is incident on the sensor unit 64. The flame simulated light from the internal test light source 74R contains 4.4 to 4.5 μm peculiar to the flame received by the sensor unit 64 and 5 to 6 μm received by the sensor unit 68, and is peculiar to the flame. It is said to be light having a fluctuation frequency of 8 to 12 Hz.

The sensitivity test unit 82 performs a sensitivity test for each of the circuit blocks of the sensor unit 64 and the amplification processing unit 66 and the circuit blocks of the sensor unit 68 and the amplification processing unit 70.

For example, in the sensitivity test of the circuit blocks of the sensor unit 64 and the amplification processing unit 66, the reference light receiving value initially set at the time of shipment from the factory is stored in the memory, and the detected light receiving value obtained in the sensitivity test at the time of system startup is It matches the reference light receiving value, and the detection sensitivity obtained by dividing the detected light receiving value by the reference light receiving value is 1. As the operation period elapses, the detected light receiving value gradually decreases, and the detection sensitivity decreases to 0.9, 0.8, 0.7, and so on.

When the detection sensitivity drops to 1 or less in this way, the sensitivity test unit 82 obtains the detection sensitivity by the sensitivity test, obtains the correction value which is the reciprocal of the detection sensitivity, stores it in the memory, and detects it in the subsequent operating state. The sensitivity is corrected by multiplying the received light value by the correction value, and the fire determination unit 80 determines the fire based on the sensitivity-corrected light receiving value.

Further, the sensitivity test unit 82 is preset with a sensitivity threshold value corresponding to a limit at which sensitivity correction is impossible, for example, a sensitivity threshold value of 0.5, and the detection sensitivity obtained in the sensitivity test is equal to or less than the sensitivity threshold value or the sensitivity. When it falls below the threshold value, it is determined that the failure is due to the sensitivity abnormality of the sensor unit 64, and the transmission unit 56 is instructed to set the sensor failure information in the response signal to the ringing signal matching the self-address and transmit it to the disaster prevention receiving panel 10. Control to make it. In order to ensure the determination of the sensor failure, the sensitivity test unit 82 may transmit a response signal in which the sensor failure is set when it is determined that the failure is due to the sensitivity abnormality a plurality of times in succession.

Further, the sensitivity test unit 82 is preset with a predetermined warning threshold for sensitivity abnormality, for example, a warning threshold of 0.6, which is larger than the sensitivity threshold, and the detection sensitivity obtained in the sensitivity test is equal to or less than the warning threshold for sensitivity abnormality. When it falls below the sensitivity abnormality warning threshold, it is determined that a failure due to the sensitivity abnormality of the sensor unit 64 is near, and the transmission unit 56 is instructed to set the sensitivity abnormality warning information in the response signal to the ringing signal matching the self-address. Then, control is performed so that the signal is transmitted to the disaster prevention receiving panel 10.

Regarding the sensitivity test of the circuit system of the sensor unit 68 and the amplification processing unit 70 in the left eye fire detection unit 60L, the sensitivity test is performed in the same manner by driving the internal test light sources 74L and 75L with the test light emission driving unit 72. It is said.

(Dirt test)
The detector control unit 54 is provided with the function of the dirt test unit 84 as a function realized by executing the program. The dirt test unit 84 operates when it receives a test signal with its own address specified from the disaster prevention receiver 10 via the transmission unit 56, and instructs the test light emitting drive unit 72 to use the external test light sources 76R and 76L. The light emission is driven in order to perform a stain test on the translucent windows 50R and 50L.

For example, taking a dirt test of the translucent window 50R as an example, the test light emitting drive unit 72 emits and drives an external test light source 76R to emit a flame pseudo light corresponding to a fire flame through the translucent window 50R. It is incident on the sensor unit 64. The flame simulated light from the external test light source 76R contains 4.4 to 4.5 μm peculiar to the flame received by the sensor unit 64 and 5 to 6 μm received by the sensor unit 68, and is peculiar to the flame. It is said to be light having a fluctuation frequency of 8 to 12 Hz.

The translucent window 50R is not dirty at the time of shipment from the factory, and the light receiving value obtained in the dirt test at that time is stored in the memory as a reference light receiving value, and is used for calculating the dimming rate.

The detected light receiving value obtained in the dirt test at the time of system startup matches the reference light receiving value, and the dimming rate obtained by subtracting the detected light receiving value from the reference light receiving value and dividing by the reference light receiving value is 0. .. When the operation period will have elapsed, dirt adheres to the translucent window 50R, dimming rate is gradually increased to say 0.1, 0.2, and 0.3 ....

When the dimming rate increases in this way, the dirt test unit 84 obtains the dimming rate by the dirt test, finds the correction value which is the reciprocal of (1-dimming rate), stores it in the memory, and then operates it. The light receiving value detected in the state (the light receiving value corrected by the correction value of the sensitivity test) is divided by the correction value to correct the dirt, and the fire determination unit 80 judges the fire by the light receiving value corrected by the dirt. The received light value detected in the operating state is corrected by the correction value obtained in the sensitivity test and the correction value obtained in the dirt test described above.

Further, the stain test unit 84 is preset with a stain threshold value, for example, a stain threshold value of 0.5, which is a dimming rate corresponding to the limit at which stain correction is impossible, and the dimming rate obtained in the stain test. Is determined to be a stain abnormality that makes it impossible to correct stains on the translucent window 50R when is equal to or higher than the stain threshold value or exceeds the stain threshold value, and is instructed to the transmission unit 56 to be a response signal for a call signal matching the self-address. Control is performed to set the dirt abnormality information and transmit it to the disaster prevention receiver 10.

Further, a predetermined dirt warning threshold value smaller than the dirt threshold value, for example, a dirt notice threshold value 0.4 is preset in the sensitivity test unit 82, and the dimming rate obtained in the dirt test is equal to or higher than the dirt notice threshold value or the dirt noticer When the threshold value is exceeded, it is determined that the dirt abnormality is near, and the transmission unit 56 is instructed to set the notice information of the dirt abnormality in the response signal to the call signal matching the self-address and transmit it to the disaster prevention receiving panel 10. I do.

(Deterioration test)
The detector control unit 54 is provided with the function of the deterioration test unit 86 as a function realized by executing the program.

The deterioration test unit 86 receives a test signal with its own address specified from the disaster prevention receiver 10 via the transmission unit 56, and the sensitivity test unit 82 and the stain test unit 84 operate in sequence to perform a sensitivity test and a stain test. In this case, the detection signals of the power supply voltage Vcc1 to Vcc5 and the current consumption (power supply current) Icc1 to Icc5 detected by the voltage / current detection unit 78 provided in the power supply line to each circuit block are A / D converted. It is periodically read from the port and stored in the memory, and then the average value of the plurality of power supply voltages and current consumption stored in the memory is obtained as the internal voltage and current consumption of each circuit block, and the measured internal voltage or consumption is obtained. Deterioration abnormality is determined from the change in the current, and the transmission unit 56 is instructed to set the deterioration failure information in the response signal to the call signal corresponding to the self-address and control the transmission to the disaster prevention receiving panel 10.

In this embodiment, it is assumed that the internal voltage and the current consumption decrease as each circuit block of the fire detector 12 deteriorates. Therefore, the internal voltage and current consumption of each circuit block measured by a test or the like before shipment from the factory are stored as reference values in the memory of the detector control unit 54, and which of these reference values is used. A predetermined voltage threshold value and a current threshold value for determining whether to judge as a deterioration abnormality when the degree decreases are stored in advance, and a predetermined warning voltage threshold value and a notice current threshold value for advance notice before judging as a deterioration abnormality are also stored in advance. There is.

The deterioration test unit 86 has a function as an abnormality determination unit for determining deterioration abnormality, and when the internal voltage measured for each circuit block is below or below a predetermined voltage threshold value or below the voltage threshold value, or when the measured current consumption is predetermined. If it is below or below the current threshold of, it is determined that the deterioration is abnormal, and the transmission unit 56 is instructed to set the deterioration failure information in the response signal to the call signal that matches the self-address and to the disaster prevention receiver 10. Controls transmission. In order to ensure the determination of the deterioration abnormality, the deterioration test unit 86 may transmit a response signal in which the deterioration failure information is set when the deterioration abnormality is determined a plurality of times in succession.

Further, the deterioration test unit 86 indicates that the internal voltage of the circuit block measured through the sensitivity test and the dirt test is below the warning voltage threshold value or below the warning voltage threshold value, or the measured current consumption is below the warning current threshold value or the warning current. When it falls below the threshold value, it is determined that the deterioration abnormality of the circuit block is near, and the transmission unit 56 is instructed to set the warning information of the deterioration abnormality in the response signal to the call signal matching the self-address, and the disaster prevention receiver panel. Control to send to 10.

In the deterioration test by the deterioration test unit 86, only the internal voltage or the current consumption may be measured to determine the degree of deterioration in the same manner as described above.

[Operation of disaster prevention monitoring system]
(Operation of disaster prevention receiver)
FIG. 5 is a flowchart showing the control operation of the disaster prevention receiving panel, and the control operation is performed by the panel control unit 34 provided on the disaster prevention receiving panel 10 of FIG.

As shown in FIG. 5, when the power of the disaster prevention receiving panel 10 is turned on and the system is started up, the panel control unit 34 proceeds to step S2 after performing a predetermined initialization process in step S1 and proceeds to a fire monitoring process. I do.

As the fire monitoring process in step S2, the panel control unit 34 causes the transmission units 36a and 36b to sequentially specify the addresses of the call signals to the transmission lines 14a and 14b, and transmits the call signals from the fire detectors 12 having the same addresses. Receives and processes the response signal. Here, when the panel control unit 34 detects a fire by receiving the response signal, the alarm unit 38 outputs a fire alarm, instructs the interlocking control of other equipment via the IO unit 46, and also via the modem 44. The fire detection signal is transmitted to the remote monitoring and control equipment 32 shown in FIG. 1 to output a fire alarm.

Subsequently, the board controller 34 proceeds to step S4 when determining the arrival at the predetermined test timing becomes, for example, once daily at step S3, and the address of the first fire detector 12, which is initially set test A test signal with an instruction command is transmitted, and the fire detector 12 is made to perform a sensitivity test, a dirt test, and a deterioration test.

Subsequently, the process proceeds to step S5, and when the panel control unit 34 determines the reception of the response signal in which the test result is set from the fire detector 12 instructing the test, the panel control unit 34 proceeds to step S6 to notify and store the test result.

As a test result of step S6, the board control section 34, if the advance notice information of abnormal sensitivity from the response signal is obtained, and instructs the alarm section 38 and the display unit 40, the display and output notice warning of abnormal sensitivity, further It is to perform the printer print, also from the modem 44 via the IG slave station equipment 20 shown in FIG. 1 by sending a warning signal of the abnormal sensitivity to remote monitor control facility 32 to output a notice warning of abnormal sensitivity.

Further, when the sensor failure information is obtained from the response signal after issuing the sensitivity abnormality warning alarm, the panel control unit 34 instructs the alarm unit 38 and the display unit 40 to output and display the sensor failure alarm. Further, printer printing is performed, and a sensor failure signal is transmitted from the modem 44 to the remote monitoring control equipment 32 via the IG slave station equipment 20 shown in FIG. 1 to output a sensor failure alarm.

On the other hand, when the panel control unit 34 obtains the warning information of the dirt abnormality from the response signal as the test result of step S6, the panel control unit 34 instructs the alarm unit 38 and the display unit 40 to output the warning warning of the dirt abnormality. Display and printer printing are performed, and a warning signal of dirt abnormality is transmitted from the modem 44 to the remote monitoring control equipment 32 via the IG slave station equipment 20 shown in FIG. 1 to output a warning of dirt abnormality. Let me.

Further, when the dirt abnormality information is obtained from the response signal, the panel control unit 34 instructs the alarm unit 38 and the display unit 40 to output and display the dirt alarm, and further print the printer. A dirt abnormality signal is transmitted from the modem 44 to the remote monitoring control equipment 32 via the IG slave station equipment 20 shown in FIG. 1 to output a dirt abnormality alarm, and the translucent window is cleaned.

Furthermore, the board control section 34, as the test result in step S6, if the deterioration abnormality notice information from the response signal is obtained, and instructs the alarm section 38 and the display unit 40, and the degradation abnormality notice alarm output Display and printer printing are performed, and a deterioration abnormality warning signal is transmitted from the modem 44 to the remote monitoring control equipment 32 via the IG slave station equipment 20 shown in FIG. 1 to output a deterioration abnormality warning warning. Let me.

Further, when the deterioration abnormality information is obtained from the response signal, the panel control unit 34 instructs the alarm unit 38 and the display unit 40 to output and display the deterioration alarm, and further to print the printer. A deterioration abnormality signal is transmitted from the modem 44 to the remote monitoring control equipment 32 via the IG slave station equipment 20 shown in FIG. 1 to output a deterioration abnormality alarm, and measures such as replacement with a spare fire detector are taken. I .

Subsequently, the process proceeds to step S7, and the processes of steps S4 to S7 are repeated until it is determined that the test for all the addresses of the fire detector 12 has been completed.

(Operation of fire detector)
FIG. 6 is a flowchart showing the control operation of the fire detector, which is the control operation by the detector control unit 54 provided in the fire detector 12 of FIG.

As shown in FIG. 6, when the fire detector 12 is started up by receiving the power supply from the disaster prevention receiving panel 10, the detector control unit 54 performs a predetermined initialization process in step S11 and then proceeds to step S12. Proceed and perform fire judgment processing.

As the fire judgment process in step S12, the detector control unit 54 reads the light receiving values output from the amplification processing units 66 and 70 of the fire detection units 60R and 60L, and obtains the correction values obtained in the sensitivity test and the dirt test. After correcting the received light value by the corrected value, the ratio of the two is calculated, and if it exceeds a predetermined threshold value, it is determined that there is a fire, and the transmission unit 56 is instructed to respond to the reception of the ringing signal with its own address. Fire detection information is set in the signal and transmitted to the disaster prevention receiver 10.

Subsequently, when the detector control unit 54 determines the reception of the test signal for which its own address is specified in step S13, the detector control unit 54 performs sensitivity test processing, stain test processing, and deterioration test processing in steps S14 to S16, and performs each test processing. The test result is transmitted to the disaster prevention receiver 10 by a response signal.

That is, in the sensitivity test process in step S14, the detector control unit 54 instructs the test light emission driving unit 72 to drive the internal test light sources 74R, 75R, 74L, 75L to emit light, and emits the flame test light to the sensor unit 64. By incident on, 68, the detected light receiving value output from the amplification processing units 66 and 70 is read, the detection sensitivity is obtained based on the reference light receiving value, the sensitivity correction value is obtained and stored in the memory, and the detection sensitivity is increased. When the sensitivity abnormality is below the warning threshold, the transmission unit 56 is instructed to transmit a response signal in which the sensitivity abnormality warning information is set to the disaster prevention receiving panel 10, and when the detection sensitivity is below the sensitivity abnormality threshold, the transmission unit 56 is used. Is instructed to transmit a response signal in which sensor failure information is set to the disaster prevention receiving panel 10.

Further, in the stain test process in step S15, the detector control unit 54 instructs the test light emitting drive unit 72 to emit and drive the external test light sources 76R and 76L, and emits the flame test light through the translucent windows 50R and 50L. It is incident on the sensor units 64 and 68 via the above, for example, the light receiving value output from the amplification processing unit 66 is read, the dimming rate is obtained based on the reference light receiving value, and the dirt correction value is obtained and stored in the memory. When the dimming rate is equal to or higher than the dirt abnormality warning threshold value, the transmission unit 56 is instructed to transmit a response signal in which the dirt abnormality notice information is set to the disaster prevention receiving panel 10, and the dimming rate is equal to or lower than the dirt abnormality warning threshold value. In the case of, the response signal in which the dirt abnormality information is set is transmitted to the disaster prevention receiving panel 10 by instructing the transmission unit 56.

Further, in the deterioration test process in step S16, the internal voltage and the current consumption for each circuit block in the sensitivity test in step S14 and the dirt test in step S15 are obtained based on the detection signal of the voltage / current detection unit 78, and the internal voltage is obtained. When is less than or equal to the warning voltage threshold value or when the current consumption is less than or equal to the warning current threshold value, the transmission unit 56 is instructed to transmit a response signal in which the warning information of deterioration abnormality is set to the disaster prevention receiving panel 10, and the internal voltage is further increased. When it is below the voltage threshold or when the current consumption is below the current threshold, a response signal instructed to the transmission unit 56 and set with deterioration abnormality information is transmitted to the disaster prevention receiver 10.

[Embodiment for determining deterioration abnormality with a disaster prevention receiver]
As another embodiment of the tunnel disaster prevention system, the deterioration test unit 86 provided in the detector control unit 54 of the fire detector 12 shown in FIG. 4 measures the internal voltage and the current consumption in the sensitivity test and the dirt test, and measures the internal voltage and the current consumption. A response signal in which the measured values of the measured internal voltage and the measured current consumption are set is transmitted to the disaster prevention receiving panel 10, and the panel control unit 34 of the disaster prevention receiving panel 10 shown in FIG. Deterioration of the detector circuit unit is determined from the measured values of the internal voltage and the current consumption during the test received from the fire detector 12 by the panel control unit 34 of the disaster prevention receiver panel 10. Therefore, a predetermined voltage threshold value and a current threshold value for determining deterioration abnormality, and a predetermined warning voltage threshold value and a warning current threshold value larger than the predetermined voltage threshold value and the warning current threshold value are set in advance in the memory of the panel control unit 34.

Deterioration judgment of the detector circuit unit by the panel control unit 34 is the same as in the case of the deterioration test unit 86 of the fire detector 12, and the panel control unit 34 determines the internal voltage measured for each circuit block of the fire detector 12. Is below the warning voltage threshold or below the warning voltage threshold, or when the measured current consumption is below the warning current threshold or below the warning current threshold, it is judged that the deterioration failure of the circuit block is near, and a fire is detected. A warning of deterioration abnormality that identifies the address of the device 12 is notified by an alarm sound of the display unit 40, a display display, and printing, and the modem 44 sends the remote monitoring control equipment 32 via the IG slave station equipment 20 shown in FIG. It is controlled to transmit and notify the deterioration abnormality notice.

Further, in the panel control unit 34, when the internal voltage measured for each circuit block of the fire detector 12 is equal to or lower than a predetermined voltage threshold value or lower than the voltage threshold value, or the measured current consumption is equal to or lower than the predetermined current threshold value or the current. When it falls below the threshold value, it is determined that the deterioration is abnormal, and the deterioration abnormality alarm that specifies the address of the fire detector is notified by the alarm sound of the display unit 40, the display display, and the print, and the IG slave station shown in FIG. 1 is notified from the modem 44. It is transmitted to the remote monitoring and control equipment 32 via the equipment 20 to perform control to notify the deterioration abnormality.

Further, the panel control unit 34 stores the measured values of the internal voltage and the current consumption received from the fire detector 12 in the memory as time-series log information. For example, fire detection is performed based on a predetermined log output operation. By displaying the measured values of the internal voltage and the current consumption in chronological order on the display in the order of the addresses of the devices 12 or printing them out with a printer, it is possible to judge the progress of deterioration of the fire detector 12 in the order of the addresses. .. In this case, the change in internal voltage and current consumption due to deterioration can be emphasized by setting the temporal arrangement in units of days, weeks, months, and further specified number of days.

Further, as the output format of the log information, in addition to the numerical display of the internal voltage and the current consumption, a graph display in which the time axis is the horizontal axis and the voltage current is the vertical axis may be used.

Further, the panel control unit 34 controls to change the threshold value for determining the deterioration abnormality and the advance notice threshold value for determining the advance notice of the deterioration abnormality based on the operation of the operation unit 42 using the display of the display unit 40. The control for changing the threshold value and the warning threshold value can change the threshold value and the warning threshold value of all the fire detectors 12 at the same time, or change the threshold value and the warning threshold value of a specific fire detector 12 by designating an address. You can also let it.

[Modification of the present invention]
(Fire detector)
The above embodiment takes a two-wavelength fire detector as an example, but other methods may be used. For example, in addition to the above-mentioned two wavelengths, the CO ₂ resonance radiation band is set to the 4.4 to 4.5 μm band. On the other hand, the radiation energy on the short wavelength side, for example, in the wavelength band near 3.8 μm is detected by the same method as the two-wavelength method, and the presence or absence of flame is determined by the relative ratio of each received signal in these three wavelength bands. It may be a wavelength type flame detector.

(Dirt test)
In the above embodiment, the dimming rate is obtained by using the light receiving value obtained by the test light from the external test light sources 76R and 76L by the sensor unit 64 and the amplification processing unit 66 provided in the fire detection units 60R and 60L. However, it is also possible to provide a sensor unit and an amplification processing unit dedicated to the dirt test to obtain the dimming rate from the received value of the test light from the external test light sources 76R and 76L.

(Deterioration test)
In the above embodiment, the degree of deterioration is determined on the assumption that the internal voltage and the current consumption are reduced due to the deterioration of the circuit block of the fire detector 12, but depending on the circuit block, the leakage current due to the deterioration of insulation or the like is determined. Since it is expected that the current consumption will increase due to such factors, for example, for the current consumption, a current threshold value higher than the predetermined reference current consumption value is set, and when the current consumption threshold is equal to or higher than the current threshold value or exceeds the current threshold value, deterioration abnormality is considered. It may be judged and the deterioration abnormality alarm may be output.

(Measurement of internal voltage and current consumption of fire detector)
In the above embodiment, the power supply voltage and the power supply current supplied from the power supply unit 58 of the fire detector 12 to each circuit block are measured as the internal voltage and the current consumption to determine the degree of deterioration. The power supply voltage and the power supply current supplied to all the circuit units may be measured as the internal voltage and the current consumption to determine the degree of deterioration. As a result, only one voltage / current detection unit 78 is required, and the circuit configuration and measurement processing can be simplified.

Further, although the internal voltage and the current consumption used for determining the deterioration of the circuit portion are measured at the time of the sensitivity test and the dirt test, they may be measured at the time of other appropriate fire detector tests. Furthermore, in addition to measuring the internal voltage and current consumption during the test of the fire detector, the degree of deterioration of the circuit unit can be judged by measuring the internal voltage and current consumption in the steady monitoring state that has not been tested. good.

(Display of error list)
Further, in order to notify the abnormality by the disaster prevention receiving panel 10, the abnormality list and the dirt alarm list may be displayed on the same list.

(Handling of fire detectors with abnormal deterioration)
Further, the fire detection result may not be adopted on the disaster prevention receiving panel side for the fire detector that has deteriorated abnormally. As a result, it is possible to monitor the fire only with the normal detection result, and it is possible to reduce the non-fire report. Further, in the above, it is preferable to control so as not to adopt the fire detection result of the deterioration abnormality fire detector only when there is no abnormality in the adjacent detectors having overlapping detection ranges in order to perform the minimum monitoring.

(Indicator light of fire detector)
Further, the fire detector may be provided with an indicator lamp so that the fire detector emits light when an abnormality occurs. As a result, the worker who responds to the abnormality can know at a glance which fire detector should be dealt with. Further, the light emission display of the abnormality may be made to emit light only when a light emission permission signal is output from the disaster prevention receiving panel side. As a result, the driver or the like does not get the attention because the abnormal light emission display is not displayed during normal use. In addition, by displaying the light emission only at the time of inspection, it becomes possible to grasp at a glance at the time of inspection, and it is possible to emit light at a light emission amount that attracts attention.

(Fire detector log)
Further, the fire detector may store the current consumption, the internal voltage, and the deterioration detection state as a log in its own memory. The fire detector is connected to an external device such as an address setter, and the log data stored in the memory is read out.

(Other)
Further, 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: Fire detector
14, 14a, 14b: Transmission line 16: Fire extinguishing pump equipment 18: Cooling pump equipment 20: IG slave station equipment 22: Ventilation equipment 24: Alarm display board equipment 26: Radio rebroadcasting equipment 28: TV monitoring equipment 30: Lighting equipment 32 : Remote monitoring and control equipment 34: Panel control unit 36 , 36a, 36b , 56: Transmission unit 46: IO unit 50R, 50L: Translucent window 51: Sensor storage unit 52R, 52L: Translucent window for test light source 54: Detection Equipment control unit 58: Power supply unit 60R, 60L: Fire detection unit 64, 68: Sensor unit 66, 70: Amplification processing unit 72: Test light emission drive unit 74R, 74L, 75R, 75L: Internal test light source 76R, 76L: External test Light source 78: Voltage / current detection unit 80: Fire judgment unit 82: Sensitivity test unit 84: Dirt test unit 86: Deterioration test unit

Claims (14)

In a tunnel disaster prevention system that monitors fires by connecting a fire detector to the disaster prevention receiver
Wherein the faulty state is failure abnormality of the internal circuit of the fire detectors, deterioration and abnormal deemed previous deteriorated state leading to the failure abnormality of the fire detection known device, each provided with an abnormality determining unit for determining,
The abnormality determination unit is a tunnel disaster prevention system characterized in that the deterioration abnormality is determined so that the location where the deterioration abnormality has occurred can be identified from a plurality of locations of the internal circuit to be determined for the deterioration abnormality.
In the tunnel disaster prevention system according to claim 1,
The abnormality determination unit is provided in the fire detector.
The fire detector transmits a deterioration abnormality signal to the disaster prevention receiver when the abnormality determination unit determines the deterioration abnormality.
The disaster prevention receiver is a tunnel disaster prevention system characterized in that when the deterioration abnormality signal is received from the fire detector, the deterioration abnormality of the fire detector is notified.
In the tunnel disaster prevention system according to claim 1,
The abnormality determination unit is provided in the disaster prevention receiver.
The fire detector transmits the measurement result regarding the internal circuit to the abnormality determination unit of the disaster prevention receiver.
The abnormality determination unit determines the deterioration abnormality based on the measurement result received from the fire detector, and determines the deterioration abnormality.
The disaster prevention receiver is a tunnel disaster prevention system characterized in that when the abnormality determination unit determines the deterioration abnormality, the fire detector is notified of the deterioration abnormality.
In the tunnel disaster prevention system according to claim 2 or 3.
The fire detector is a tunnel disaster prevention system including a display unit that displays the deterioration abnormality when the abnormality determination unit determines the deterioration abnormality.
In the tunnel disaster prevention system according to any one of claims 1 to 4.
The internal circuit of the fire detector is divided into circuit blocks for each function.
The abnormality determining unit, when at least one of either the internal voltage or current consumption of the circuit blocks is out of the predetermined range, and wherein determining a possible deterioration abnormality identifying the circuit blocks Tunnel disaster prevention system.
In the tunnel disaster prevention system according to claim 5.
When it is recognized that the decrease in at least one of the internal voltage and the current consumption or the increase in the current consumption is within the predetermined range of the stage before determining the deterioration abnormality, the abnormality determination unit gives a notice of the deterioration abnormality. A tunnel disaster prevention system, characterized in that the disaster prevention receiver is notified of a deterioration abnormality notice of the fire detector.
In the tunnel disaster prevention system according to claim 6.
The disaster prevention receiver is a tunnel disaster prevention system characterized in that, based on a predetermined setting operation, the threshold value of the abnormality determination unit, which is a reference for the deterioration abnormality and / or the difference recognized as a notice of the deterioration abnormality, is changed.
In the tunnel disaster prevention system according to any one of claims 5 to 7.
The fire detectors to measure at least one of the power supply voltage or power supply current is output for each of said circuit blocks from a power supply unit, as at least one of the internal voltage or the current consumption of each of the circuit blocks A tunnel disaster prevention system featuring.
In the tunnel disaster prevention system according to any one of claims 5 to 8.
Said fire detector, at least one of power supply voltage or power supply current output from the power supply unit when the detector test for each of the circuit blocks, at least one of the internal voltage or the current consumption of each of the circuit blocks other hand A tunnel disaster prevention system characterized by measuring as.
In the tunnel disaster prevention system according to any one of claims 5 to 9.
The disaster prevention receiver transmits a test start signal to the fire detector at a predetermined operation or at a predetermined cycle.
Said fire detector, wherein, when receiving the test start signal from the disaster prevention receiver, self vessels tunnel disaster prevention system characterized by measuring at least one of the internal voltage or current consumption of the circuit for each block of ..
In the tunnel disaster prevention system according to claim 10.
The fire detector, in the implementation of tests based on the test start signal, at least one of the internal voltage or at least one of the measured at predetermined intervals the mean voltage or mean current of the current consumption of each of the circuit blocks A tunnel disaster prevention system characterized by seeking one side.
In the tunnel disaster prevention system according to any one of claims 1 to 11.
The fire detector is
In addition to being arranged so that the detection ranges of adjacent fire detectors overlap
A first fire detection unit that monitors one side of adjacent fire detectors in an arranged state and a second fire detection unit that monitors the other side opposite to the one side are provided.
The abnormality determination unit determines the deterioration abnormality by distinguishing between the deterioration abnormality of the first fire detection unit and the deterioration abnormality of the second fire detection unit.
Deterioration abnormality is determined by a predetermined fire detector, and when there is no abnormality including the deterioration abnormality in the fire detector whose detection range overlaps with the fire detector for which the deterioration abnormality is determined, the fire for which the deterioration abnormality is determined A tunnel disaster prevention system characterized in that the fire detection result of the detector is not adopted in the fire judgment.
In the tunnel disaster prevention system according to any one of claims 1 to 12.
A tunnel disaster prevention system for notifying the deterioration abnormality including a portion of the internal circuit of the fire detector identified as the deterioration abnormality.
In a tunnel disaster prevention system that monitors a fire by connecting a fire detector that detects a fire based on the radiation incident on the light receiving element through a translucent window to the disaster prevention receiver.
It is equipped with an abnormality determination unit that determines a deterioration abnormality that is recognized as a deterioration state before the failure abnormality that is the failure state of the internal circuit of the fire detector.
The abnormality determination unit
To determine the deterioration abnormality other than the stain on the translucent window acquired at the time of the stain test in which the test light is incident on the light receiving element through the translucent window to detect the stain on the translucent window. First information and / or
A second for determining the deterioration abnormality other than the light receiving sensitivity of the light receiving element acquired at the time of the sensitivity test in which the test light is incident on the light receiving element without passing through the translucent window to detect the light receiving sensitivity of the light receiving element. Based on the information in 2
A tunnel disaster prevention system characterized by determining the deterioration abnormality.

Images