JP2022121650A - disaster prevention system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To appropriately determine the necessity of cleaning by grasping contamination states of translucent windows which are provided correspondingly to both right-side and left-side monitoring areas.

SOLUTION: A disaster prevention system for monitoring occurrence of a fire in a monitoring area by disposing a fire detection device for each boundary of a plurality of continued monitoring areas, comprises a display unit which displays information relating to the fire detection device, and a control unit which causes the display unit to display the information. The fire detection device detects a first window contamination degree indicating a contamination state of a first translucent window and a second window contamination degree indicating a contamination state of a second translucent window. On the basis of the first window contamination degree and the second window contamination degree, the control unit causes the display unit to display a pair of the first window contamination degree and the second window contamination degree in the order of disposing a plurality of fire detection devices in such a manner that the first window contamination degree of one fire sensor and the second window contamination degree of the other fire sensor, the fire sensors being respectively disposed in adjacent boundaries, are displayed side by side.

SELECTED DRAWING: Figure 7

COPYRIGHT: (C)2022,JPO&INPIT

Description

The present invention relates to a disaster prevention system that monitors fires in monitoring areas divided at predetermined intervals in the longitudinal direction of a tunnel by a fire detection device connected to a signal line drawn from a disaster prevention receiving panel.

Conventionally, in order to protect people and vehicles from fire accidents that occur in tunnels, fire detection devices are installed in tunnels such as automobile roads to monitor fires, and are connected to signal lines drawn from disaster prevention receivers. ing.

The fire detection device is installed at the boundary of the monitoring area divided into, for example, 25 m intervals or 50 m intervals along the longitudinal direction of the tunnel. Equipment monitors fires in the same monitored area redundantly.

The fire detection device is provided with translucent windows on the left and right corresponding to the monitoring areas on the left and right, and through the translucent windows, radiation from the fire flames generated in the tunnel, such as infrared rays, is monitored. .

The fire detection device installed in the tunnel has a translucent window that becomes dirty over time due to the adhesion of pollutants floating in the environment. We monitor the dirt on the transparent windows and clean the translucent windows at regular intervals.

In order to monitor the contamination of the translucent window, the test light from the test light source installed in the fire detection device is periodically incident on the translucent window via the detection exit area side space outside the detection device and received by the light receiving element. At this time, the light reception level at this time is compared with that at the time of initial non-fouling, and the light attenuation rate is obtained as the degree of contamination. When the degree of contamination exceeds a predetermined threshold, a contamination signal is sent to the disaster prevention receiving panel and a contamination warning is output. I am letting When a contamination alarm for the fire detection device is output, it is necessary to take measures to clean the translucent window of the contamination state of the fire detection device.

In addition, a contamination predictive threshold lower than the contamination threshold is set, and when the degree of contamination exceeds the contamination predictive threshold, a contamination predictive signal is transmitted to the disaster prevention receiving panel to output a contamination predictive warning. Regarding the contamination warning of fire detection devices, if the number of fire detection devices with contamination warning increases and the period until regular cleaning is scheduled is long, the plan will be revised, such as advancing the timing of cleaning work. becomes possible.

By the way, as a method of monitoring the contamination of the fire detection device using the disaster prevention receiver, the degree of progress of the contamination state, such as normal, signs of contamination, and contamination, is displayed in order along the length of the tunnel, based on the degree of contamination detected by the fire detection device. This makes it possible to grasp the extent and tendency of contamination of the fire detection devices in the entire tunnel (Patent Document 1).

JP-A-2000-315285 JP-A-2002-063664

By the way, in a disaster prevention system that displays the progress of the contamination state such as normal, contamination sign, and contamination in the order of the tunnel length direction based on the degree of contamination detected by the fire detection device on the disaster prevention receiver panel, fire detection If the device does not distinguish between the pollution status of the right translucent window and the left translucent window corresponding to the left and right monitoring areas, and the pollution degree of both translucent windows has reached the pollution warning threshold. If it is normal, if one of the translucent windows exceeds the contamination threshold, it is judged to be a sign of contamination, and if one of the translucent windows exceeds the contamination threshold, it is judged to be contamination. The degree of progress is displayed in order of the length of the tunnel.

The indication of the contamination state of the fire detection device by such a disaster prevention receiver panel is for checking the necessity of cleaning the translucent window provided in the fire detection device. When examining the need for cleaning and planning cleaning work, it is not necessarily efficient to display the degree of progress of the fouling state in the order of the length of the tunnel (arrangement order). In addition, since the conventional disaster prevention system displays the state of contamination without distinguishing between the left and right translucent windows, there is a possibility that the need for cleaning cannot be determined accurately.

For example, even if the degree of contamination is displayed in the order of the longitudinal direction of the tunnel, it is necessary to visually search for which detection device needs cleaning or whether the cleaning is urgent.

Also, for example, depending on the direction of the air current flowing through the tunnel, the deterioration of a fire detection device installed in a tunnel may progress faster on one side of the translucent window than on the other side. For this reason, for example, even if one of the translucent windows of a certain fire detection device is in a state of predicting contamination, the other translucent window may be normal (not soiled or lightly soiled). In this case, the fire detection device's light-transmitting windows are displayed as being in a prefouling state on the disaster prevention receiver panel, and in this case, the urgency is higher than when both translucent windows are in a prefouling state. However, it is not efficient because it cannot be grasped immediately.

In addition, even if the translucent window of one of the fire detection devices monitoring the same monitoring area, which are arranged adjacent to each other and redundantly monitor the same monitoring area, becomes dirty, If the translucent window of the other fire detection device monitoring the same surveillance area is in a normal state, the surveillance function in that surveillance area is maintained by the monitoring by the translucent window of the fire detection device in a normal state. If this is known, cleaning of the fire detection device that has become soiled will have a relatively large margin of time. In this case, cleaning of the defaced fire detection device has to be done more quickly than necessary, and there remains a possibility that the need for cleaning cannot be judged appropriately.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a disaster prevention system capable of appropriately determining the need for cleaning by grasping the state of contamination of translucent windows provided corresponding to the monitoring areas on both the left and right sides of a fire detection device. and

(Disaster prevention monitoring system)
The present invention is a disaster prevention system that monitors the occurrence of a fire in a monitoring area by arranging a fire detection device at each boundary of a plurality of continuous monitoring areas,
a display unit that displays information about the fire detection device;
a control unit for displaying information on the display unit;
with
Fire detection equipment
A first translucent window and a second translucent window corresponding to each of the monitoring areas adjacent to each other on the boundary of the monitoring area where the fire detection device is arranged,
Determining whether or not a fire has occurred in each of the monitored areas by receiving light from each of the monitored areas through the first translucent window and the second translucent window,
A first window contamination degree indicating a contamination state of a first translucent window corresponding to one of the mutually adjacent monitoring areas, and a contamination state of a second translucent window corresponding to the other of the mutually adjacent monitoring areas. Detecting the second window pollution degree and
The control unit
Based on the pollution degree of the first window and the pollution degree of the second window detected by a plurality of fire detection devices, the display unit displays the pollution degree of the first window of one fire detector and the fire of the other, which are respectively arranged at the borders adjacent to each other. The set of the first window pollution degree and the second window pollution degree is displayed in the order of arrangement of the plurality of fire detection devices so that the second window pollution degree of the detector is aligned.

The present invention provides a fire detection system in a disaster prevention system in which a plurality of fire detection devices arranged at the boundary of a monitoring area divided at predetermined intervals along a predetermined direction are connected to a signal line drawn from a receiver. The device receives the radiation from the two monitored areas through the corresponding translucent windows and converts them into electrical signals. Based on the electrical signals, the fire in the corresponding monitored area A fire determination unit that transmits a fire determination signal to a receiving device, and detects a first window pollution degree indicating the pollution state of one translucent window and a second window pollution degree indicating the pollution state of the other translucent window. and a contamination detection unit that transmits a contamination degree detection signal corresponding to these to the receiving device, and the receiving device includes a fire monitoring control unit that receives the fire determination signal from the fire detection device and issues an alarm, and a plurality of fire detection Since it is provided with a pollution display control unit that displays the first window pollution degree and the second window pollution degree received from the device in a predetermined order, for example, monitoring areas divided at predetermined intervals along the longitudinal direction of the tunnel In the case of a plurality of fire detection devices installed at the boundary and monitoring fires in the monitoring areas corresponding to the first and second translucent windows, the first window provided in the plurality of fire detection devices in the receiving device By displaying the degree of contamination and the degree of contamination of the second window in a predetermined order, for example, the degree of contamination such as normal, sign of contamination, and contamination can be grasped for each of the first and second translucent windows, and the degree of contamination of the translucent window can be determined. To appropriately determine the necessity of cleaning.

(Effect of displaying in descending order of degree of contamination separately in the left window and the right window)
In addition, the pollution display control unit of the receiving device divides the first window pollution degree and the second window pollution degree of a plurality of fire detection devices and displays them in descending order of the pollution degree. The first and second translucent windows are divided and displayed in descending order of the degree of contamination, and the degree of contamination of the translucent window with the highest need for cleaning is displayed at the top, for example, so that the need for cleaning can be appropriately indicated. It is possible to judge

(Effect of combining and displaying the contamination degree of the left window and the right window)
Further, the defacement display control unit causes the first window defacement degree displayed in descending order of defacement degree to be displayed in combination with the corresponding second window defacement degree, and displays the second window defacement degree displayed in descending order of defacement degree. In addition, since the corresponding first window pollution degree is displayed in combination, for example, the second window pollution degree of the same fire detection device corresponding to the first window pollution degree displayed at the top in descending order of pollution degree is displayed. By being displayed, the need for cleaning can be appropriately determined in consideration of the first and second degrees of contamination.

(Effect of displaying the degree of pollution in the order in which the fire detection devices are arranged)
In addition, the defacement display control unit of the receiving device displays the sets of the defacement degree of the first window and defacement degree of the second window of the multiple fire detection devices in the order in which the fire detection devices are arranged. A set of the degree of soiling of the first window and the degree of soiling of the right window is displayed along the direction in which the fire detection devices are arranged. Appropriate judgment is possible.

(Effect of mixed display of the degree of contamination of the left window and the degree of contamination of the right window in descending order of degree of contamination)
In addition, since the contamination display control unit of the receiving device displays the first window contamination degree and the second window contamination degree of a plurality of fire detection devices in descending order of the degree of contamination, By arranging and displaying the degree of contamination of the second window in descending order of degree of contamination, it is possible to grasp the light-transmitting window that needs cleaning the most and appropriately determine the need for cleaning.

(Effect of displaying the degree of contamination in overlapping monitoring areas in order)
Further, the defacement display control unit of the receiving device displays the defacement degree of one of the fire detection devices that redundantly monitors the same monitoring area and the defacement degree of the other fire detection device so as to be adjacent to each other. Since the set of the first window contamination degree and the second window contamination degree of the fire detection device is displayed in the order in which the multiple fire detection devices are arranged, redundant monitoring is performed by two adjacent fire detection devices. The relationship between the degree of pollution on one side and the degree of pollution on the other corresponding to each translucent window for the same monitoring area can be easily and reliably understood, for example, even if the degree of pollution on one side reaches the pollution level If the degree of pollution is within the normal level, redundant monitoring cannot be performed for that monitoring area, but it is normally monitored by the other fire detection device whose degree of pollution is at the normal level, and the degree of pollution of the other fire detection device is To appropriately judge the necessity of cleaning by judging that the necessity of cleaning is not imminent even if the soiling level is reached.

(Distinguishment of contamination sign and contamination by fire detection device and effect of identification display by receiving device)
Further, the contamination detection unit of the fire detection device transmits a contamination sign signal indicating a contamination sign state to the receiving device when the degree of contamination sign of the first window or the degree of contamination sign of the second window reaches a predetermined threshold value for sign of contamination, and When the one-window contamination degree or the second-window contamination degree contamination reaches a predetermined contamination threshold higher than the contamination sign threshold, a contamination signal is transmitted to the receiving device, and the contamination display control unit of the receiving device responds to the contamination sign signal. The corresponding left window contamination degree or right window contamination degree is made to identify and display the contamination sign state, and the first window contamination degree or second window contamination degree corresponding to the contamination signal is made to identify and display the contamination state. When the degree of contamination on the first window and the degree of contamination on the second window are divided and displayed in descending order of degree of contamination, whether the large degree of contamination displayed at the top is in the state of contamination or in the state of sign of contamination indicates each. To easily comprehend by identification display, and to make it possible to more appropriately judge the necessity of cleaning when displaying in descending order of degree of contamination.

(Effects of signs of contamination and determination of contamination and identification display in the receiving device)
Further, the pollution display control unit of the receiving device sets the pollution sign state to the first window pollution degree or the second window pollution degree when the first window pollution degree or the second window pollution degree reaches a predetermined pollution sign threshold. is displayed, and when the degree of contamination of the first window or the degree of contamination of the second window reaches a predetermined contamination threshold higher than the contamination sign threshold, the degree of contamination is identified by the degree of contamination of the first window or the degree of contamination of the second window. Since it is displayed, it is possible to easily grasp whether the display of a large degree of contamination is in the state of contamination or in the state of predicting contamination by each identification display, and the necessity of cleaning when the display is in the order of the degree of contamination. make it possible to make more appropriate judgments.

In addition, the processing load on the fire detection device side can be reduced by centrally performing the determination of the contamination sign state and the contamination state in the receiving device.

Explanatory drawing showing an overview of the disaster prevention system according to the present invention, taking fire monitoring in a tunnel as an example. Explanatory diagram showing a warning area in a tunnel that is redundantly monitored by a fire detection device Block diagram showing an outline of the functional configuration of the fire detection device Explanatory diagram showing the appearance of the fire detection device Block diagram showing the outline of the functional configuration of the disaster prevention receiver Explanatory diagram showing a list of damage information stored in the memory of the disaster prevention receiver Explanatory drawing showing the first embodiment of the defacement display Explanatory drawing showing the second embodiment of the defacement display Explanatory drawing showing the third embodiment of the defacement display Explanatory drawing showing the fourth embodiment of the defacement display Explanatory drawing showing the fifth embodiment of the defacement display Explanatory drawing showing another display form according to the fifth embodiment Explanatory drawing showing another display form according to the fifth embodiment

[Overview of disaster prevention system]
FIG. 1 is an explanatory diagram showing an outline of a disaster prevention system according to the present invention, taking fire monitoring in a tunnel as an example. As shown in FIG. 1, an up-line tunnel 1a and a down-line tunnel 1b are constructed as tunnels of a motorway.

Inside the up line tunnel 1a and the down line tunnel 1b, fire detection devices 16 are installed at intervals of, for example, 50 meters along the walls in the longitudinal direction of the tunnels. The fire detection device 16 has two sets of light-receiving units with translucent windows on the left and right sides, so that it has monitoring areas in both the left and right directions of the upward and downward longitudinal directions of the tunnel, and along the longitudinal direction of the tunnel, It is arranged continuously so that the monitoring area with the fire detection device arranged adjacently overlaps.

Power supply and signal lines 12a and 12b are led out from the disaster prevention receiving panel 10 functioning as a receiving device to the up line tunnel 1a and the down line tunnel 1b, and a fire detection device 16 is connected. are preset in order. In place of the addresses, unique IDs (identifiers) may be set in the fire detection device 16 in order of arrangement.

FIG. 2 is an explanatory diagram showing a monitoring area in a tunnel that is redundantly monitored by the fire detection device, taking the upstream tunnel 1a of FIG. 1 as an example.

As shown in FIG. 2, fire detection devices 16 are installed at intervals of, for example, 50 meters along the side wall of the inbound tunnel 1a. This partitions the inside of the tunnel longitudinally into monitoring areas AR1, AR2, . . . ARi-1, ARi, ARi+1, . Each monitoring area has a size of, for example, 50 m in the longitudinal direction×20 m in the lateral direction.

The fire detection device 16 has a left window light-receiving unit with a left light-transmitting window (first window) and a right window light-receiving unit with a right light-transmitting window (second window) for individually monitoring the left and right monitoring areas. department is provided. Here, in the present embodiment, the left-right relationship of the fire detection device 16 is determined when the fire detection device 16 is viewed from the front.

For example, the i-th fire detection device 16 arranged at the left end of the monitoring area ARi and the i+1-th fire detection device 16 arranged at the right end of the monitoring area ARi detect the monitoring area ARi by the right window light receiving part of the i-th fire detection device 16. At the same time, the same monitoring area ARi is redundantly monitored by the left window light receiving section of the i+1-th fire detection device 16 .

The first monitoring area AR1 on the tunnel entrance side is monitored solely by the left window light receiving section of the first fire detection device 16 .

The fire detection device 16 observes radiation, for example, infrared rays, from flames caused by a fire that has occurred in the left or right monitoring area with the left window light receiving unit to monitor the fire, and also observes the fire with the right window light receiving unit. is monitored, and when a fire is detected, a fire signal including a preset unique address and identification information indicating left window detection or right window detection is sent to the disaster prevention receiver panel 10 .

In addition, the fire detection device 16 detects the contamination of the light-transmitting window provided in the light-receiving part independently on the left and right sides, for example, once a day. to the disaster prevention receiving panel 10.

Furthermore, when the degree of contamination detected periodically exceeds a predetermined contamination sign threshold value, the fire detection device 16 generates a contamination sign signal containing the contamination sign information and identification information indicating whether the left window or the right window has been detected. When the degree of contamination exceeds a predetermined contamination threshold value, a contamination signal including identification information indicating whether the left window is detected or the right window is detected is transmitted to the disaster prevention receiver 10 .

[Fire detection device]
FIG. 3 is a block diagram showing an outline of the functional configuration of the fire detection device, and FIG. 4 is an explanatory diagram showing the appearance of the fire detection device.

As shown in FIG. 3, the fire detection device 16 includes a left window fire detection section 16L and a right window fire detection section 16R. 38a and 38b, amplification processing units 40a and 40b corresponding to these, control unit 34 and transmission unit 35 are provided. A left translucent window 36L provided in the detector cover is arranged in front of the light receiving sections 38a and 38b, and the light receiving sections 38a and 38b receive light energy from an external monitoring area through the left translucent window 36L. is incident on

Also, in order to monitor the contamination of the left translucent window 36L, a contamination detection section composed of a test light source section 42, a contamination light receiving section 44 and an amplifier section 46 is provided.

Here, as shown in FIG. 4, the fire detection device 16 is provided with a left light-transmitting window 36L and a right light-transmitting window 36R in the sensor housing portion 54 provided in the upper part of the housing 52. The light receiving units of the left window fire detection unit 16L and the right window fire detection unit 16R shown in FIG. 3 are arranged inside the transparent window 36L and the right window 36R. Two sets of test light source transmissive windows 56 containing individual test light source units 42 are provided near the left translucent window 36L and the right translucent window 36R at positions where the light receiving units can be seen through. .

Referring to FIG. 3 again, the right window fire detection section 16R has the same configuration as the left window fire detection section 16L, but the control section 34 is provided as a unit common to both. A computer circuit or the like having an input/output port or the like is used. Further, the control unit 34 is provided with a fire determination unit 48 and a contamination processing unit 50 as functions realized by executing a program.

The left window fire detection unit 16L monitors a fire by, for example, a two-wavelength flame detection principle. The light receiving portion 38a receives radiation of 4.4 to 4.5 μm, which is the resonance radiation band of CO ₂ peculiar to flames, from the light energy incident through the left translucent window 36L, and uses an optical wavelength bandpass filter. The light is selectively transmitted, the energy of the radiation is photoelectrically converted by the light receiving sensor, and then subjected to predetermined processing such as amplification by the amplification processing unit 40 a to generate a light reception signal corresponding to the energy amount and output to the control unit 34 .

The light receiving section 38b selectively transmits radiant energy of 5 to 6 μm from the light energy incident through the left translucent window 36L with an optical wavelength bandpass filter, and detects the energy of the radiation with a light receiving sensor. Then, the signal is subjected to predetermined processing such as amplification by the amplification processing unit 40b, and is output to the control unit 34 as a light reception signal corresponding to the energy amount.

A fire determination unit 48 provided in the control unit 34 determines the presence or absence of a flame by, for example, taking the relative ratio of the received light signal levels output from the amplification processing units 40a and 40b and comparing it with a predetermined threshold value. When a fire is detected by judging that there is a fire, the transmission unit 35 is instructed to add fire judgment information and identification information indicating detection of the left window to a response telegram to a call telegram matching the own address from the disaster prevention receiver panel 10. By setting, it controls transmission to the disaster prevention receiving panel 10 as a fire determination signal.

The contamination detection unit composed of the test light source unit 42, the contamination light receiving unit 44, and the amplification unit 46 operates the test light source unit 42 at a predetermined cycle, for example, once a day, according to an instruction from the contamination processing unit 50 of the control unit 34. A flashing predetermined test light is emitted, and is incident on the contamination light receiving section 44 through the left translucent window 36L. This test light is converted into an electric signal by a light receiving sensor provided in the contamination light receiving section 44 and amplified. After being amplified by the unit 46, a contamination detection signal corresponding to the degree of contamination of the left translucent window 36L is output to the control unit 34. FIG.

When the contamination detection signal from the amplification unit 46 is obtained, the contamination processing unit 50 of the control unit 34 compares the prerecorded contamination detection signal level when there is no contamination with the contamination detection signal level obtained by the contamination processing. The degree of pollution is detected by calculating the current rate. The detected defacement degree is instructed to the control unit 34, and the defacement information indicating the defacement degree value and the identification information indicating left window detection are set in the response message to the call message matching the own address, thereby detecting the defacement. It controls transmission to the disaster prevention receiving board 10 as a signal.

The above-mentioned contamination detection by the contamination processing unit 50 is performed in response to a periodical (for example, once a day) contamination processing execution instruction signal from the disaster prevention receiving panel 10, and the contamination detection signal is returned as a response signal. You can also

Further, when the detected degree of contamination exceeds a predetermined contamination sign threshold, the contamination processing unit 50 of the control unit 34 instructs the transmission unit 35 to send a call telegram matching the own address (or the previous contamination By setting the contamination predictive information and the identification information indicating detection of the left window in the response telegram to the processing execution instruction signal), control is performed to transmit the contamination predictive signal to the disaster prevention receiver panel 10 .

Here, when the degree of contamination is attached to the contamination information transmitted to the disaster prevention receiver 10, the comparison processing with the contamination sign threshold and the determination of the contamination sign may be performed on the disaster prevention receiver 10 side. In this case, the contamination sign threshold value is set and registered in the disaster prevention receiving panel 10 .

Further, when the degree of contamination based on the contamination detection signal from the amplifier 46 exceeds a predetermined contamination threshold higher than the contamination sign threshold, the contamination processing unit 50 of the control unit 34 instructs the transmission unit 35 to By setting the identification information indicating the detection of the left window and the contamination information in the calling message from the receiver 10 that matches the own address, control is performed to transmit the signal to the disaster prevention receiver 10 as a contamination signal.

In addition, when attaching the degree of contamination to the contamination information transmitted to the disaster prevention receiver 10, the comparison processing with the contamination threshold value and the determination of the contamination may be performed on the disaster prevention receiver 10 side. In this case, the contamination threshold is set and registered in the disaster prevention receiving panel 10 .

Here, the contamination processing unit 50 of the control unit 34 obtains the light attenuation rate of the left translucent window 36L indicating the degree of contamination based on the contamination detection signal from the amplification unit 46, and uses this light attenuation rate as the degree of contamination for disaster prevention reception. Along with transmitting to the board 10, processing for determining signs of staining and staining is performed.

Calculation of the light attenuation rate of the left translucent window 36L by the contamination processing unit 50 is based on the level of the contamination detection signal at the time of factory shipment when the left translucent window 36L is free from contamination, the start of fire monitoring, or the end of cleaning. Er, and every time a contamination detection signal of detection level E is obtained from the amplifier 46, the light attenuation rate D is set to D=1-(E/Er).
Calculate as

The light attenuation rate D calculated in this manner is a value that varies in proportion to the degree of contamination of the translucent window 36, and in the following description, the light attenuation rate will be described as the degree of contamination.

Further, the defacement sign threshold value used in defacement sign determination in the defacement processing unit 50 can maintain fire monitoring of the entire monitoring area by the light receiving units 38a and 38b although the left translucent window 36L is slightly defaced ( set to a predetermined first pollution level, such as 75 percent light reduction, which can detect fires of a predetermined size.

Further, the defacement threshold used in defacement determination by the defacement processor 50 is a predetermined second defacement level higher than the first defacement level, e.g. Set to percent.

Such processing by the contamination detection unit 50 is the same for the contamination of the right translucent window 36R.

[Disaster prevention receiver]
FIG. 5 is a block diagram showing an outline of the functional configuration of the disaster prevention receiving panel. As shown in FIG. 5, the disaster prevention receiving panel 10 includes a control unit 18. The control unit 18 is a function realized by executing a program, for example, and has functions of a fire monitoring control unit 31 and a contamination display control unit 32. . As the hardware of the control unit 18, a computer circuit or the like having a CPU, a memory, various input/output ports, and the like is used.

Transmission units 20a and 20b are provided for the control unit 18, and signal lines 12a and 12b drawn from the transmission units 20a and 20b are connected to fire detection devices 16 installed in the up line tunnel 1a and the down line tunnel 1b, respectively. Multiple units are connected.

In addition, for the control unit 18, an alarm unit 22 equipped with a speaker, an alarm indicator lamp, etc., a display unit 24 equipped with a liquid crystal display, etc., a printer 25, an operation unit 26 equipped with various switches, etc., and an IG for communicating with external monitoring equipment A modem 28 is provided for connecting slave station equipment, and an IO section 30 is provided for connecting ventilation equipment, alarm display board equipment, radio rebroadcast equipment, camera monitoring equipment, lighting equipment and fire pump equipment.

The fire monitoring control unit 31 of the disaster prevention receiving panel 10 repeatedly transmits calling telegrams including polling commands sequentially specifying the addresses of the fire detection devices 16 via the transmission units 20a and 20b. When a calling telegram that matches is received, it returns a response telegram containing detection information such as the degree of staining detected immediately before, signs of staining, staining, etc., and identification information indicating whether left window detection or right window detection.

When the fire monitoring control unit 31 of the disaster prevention receiving panel 10 determines that a fire has occurred by receiving a telegram from the fire detection device 16, it instructs the alarm unit 22 to output a fire alarm and instructs the IO unit 30 to output a fire alarm. Let other equipment perform interlocking control.

[Dirty monitoring with disaster prevention receiving panel]
(Collection and storage of defacement information)
The defacement display control unit 32 of the disaster prevention receiver panel 10 stores a diagram in the memory of the control unit 18 based on the degree of defacement information set in the response message received from the fire detection device 16 and the identification information as to whether the left window is detected or the right window is detected. 6, the contamination information 100 of the fire detection device 16 shown in FIG.

The stain information 100 stored in the memory in FIG. 6 corresponds to the address of the fire detection device 16, and the left window stain degree LDi detected by the left window fire detection unit 16L and the right window fire detection unit 16R in FIG. The left window stain degree RDi that has been obtained is stored. Note that i indicates an arbitrary address of the fire detection device 16 .

Here, if the tunnel lengths of the up-line tunnel 1a and the down-line tunnel 1b shown in FIG. 100, the left window stain degrees LD01 to LD20 and the right window stain degrees RD01 to RD20 are stored corresponding to addresses 01 to 20 set for 20 fire detection devices 16 as an example. Further, the left window pollution degrees LD01 to LD20 and the right window pollution degrees RD01 to RD20 are analog values indicating the light attenuation rate of the translucent window.

When a predetermined operation for confirming the contamination state is performed by the operation unit 26, the contamination display control unit 32 displays the degree of contamination on the left window and the degree of contamination on the right window corresponding to the address based on the contamination information 100 shown in FIG. are displayed on the liquid crystal display of the display unit 24 according to a predetermined order, and the printer 25 is controlled to print out the list.

Further, based on the damage information 100 shown in FIG. 6, the damage display control unit 32 of the disaster prevention receiver panel 10 may cause the liquid crystal display of the display unit 24 to display a list of the degree of damage to the left window and the degree of damage to the right window corresponding to the address. When printed out by the printer 25, control is performed so that the left window staining degree and the right window staining degree are identifiably displayed by color coding or the like corresponding to the staining sign or staining.

An embodiment of display control of the contamination information by such a contamination display control unit 32 is as follows.

(First embodiment of defacement display)
FIG. 7 is an explanatory diagram showing the first embodiment of the stain display. As shown in FIG. 7, the contamination display 102 of the present embodiment by the contamination display control unit 32 of the disaster prevention receiver panel 10 is based on the contamination information 100 shown in FIG. are displayed separately. Although the display is performed for each up line and down line, only the up line side is illustrated.

The left window contamination information 102 arranges the left window contamination degrees LDi corresponding to the address Ai of the upstream fire detection device 16 in descending order of the contamination degree. In the right window stain information 104, the right window stain degrees RDi corresponding to the addresses Ai of the fire detection devices 16 are arranged in descending order of the stain degrees.

Regarding the left window contamination information 102, the left window contamination level LD15 of the top address 15 with the maximum contamination level is the contamination state shown by the hatched line because the contamination signal is received from the corresponding fire detection device 16. It is identified that it is in Further, the left window stain degrees LD09, LD04, and LD12 of addresses 09, 04, and 12, which are the second to fourth stain degrees, are indicated by sand because the stain sign signal is received from the corresponding fire detection device 16. It is identified and displayed to indicate that it is in a contamination sign state.

Also, regarding the right window stain information 104, the right window stain degree RD07 at the top address 07 with the highest stain degree is stained as indicated by hatched lines because the stain signal is received from the corresponding fire detection device 16. The state is identified and displayed. Further, the left window stain degrees RD01 and RD09 of the addresses 01 and 09, which have the second to third stain degrees, receive the stain indication signal from the corresponding fire detection device 16. The state is identified and displayed.

The identification display of the contamination state or the contamination predictive state is made by using a predetermined color for the background or characters of the corresponding display portion. For example, the fouling state is identified with red, and the potential fouling is identified with yellow.

By viewing the display of the left window contamination information 102 and the right window contamination information 104 arranged in descending order of degree of contamination, the need for cleaning the left translucent window increases with respect to the fire detection device 16 at address 15. As for the right translucent window, it can be grasped at a glance that the need for cleaning the fire detection device 16 of address 07 is increasing. Since it has reached 85% and it is no longer possible to monitor the whole area, it can be judged that the need for cleaning is even higher.

On the other hand, the fire detection devices 16 at addresses 09, 04, and 12 for the left translucent windows and the fire detection devices 16 at addresses 01 and 15 for the right translucent windows are in a state indicating a sign of contamination indicated by sand, that is, decreased. Although the light rate is less than 85%, it reaches 75%, and it can be judged that the need for cleaning is the next highest.

(Second embodiment of defacement display)
FIG. 8 is an explanatory diagram showing a second embodiment of the stain display. As shown in FIG. 8, the contamination display of the present embodiment by the contamination display control unit 32 of the disaster prevention receiver 10 is different from the left window contamination degree LDi of the left window contamination display 102 shown in FIG. are displayed in combination with the right window contamination degree RDi at . Although the display is performed for each up line and down line, only the up line side is illustrated.

Further, the left window stain level LDi of the left window stain display 102 shown in FIG. 7 is displayed in combination with the right window stain level RDi of the same fire detection device 16 .

For example, the left window contamination degree LD15 of the address 15 having the highest contamination degree of the left window contamination display 102 and the right window contamination degree RD15 of the same address 15 are displayed in combination. Here, since the left window contamination degree LD15 of address 15 is in the contamination state, it is indicated by diagonal lines, and the right window contamination degree RD15 of the same address 15 is in the contamination predictive state, so is indicated by sand. Identification is provided.

In this case, the left window contamination degree LD15 of address 15 is in a dirty state with a light attenuation rate of 85%, and the right window contamination degree RD15 of address 15 has a light attenuation rate of less than 85% but reaches 75%. It can be understood at a glance that the fire detection device 16 at the address 15 has a considerably high need for cleaning.

This point is the same for the case based on the right window stain display 104, and the left window stain degree LL07 of the same address 07 is added to the right window stain degree RD07 of the address 07 having the highest stain degree in the right window stain display 104. displayed in combination. Here, since the right window contamination level RD07 at the address 07 is in the contamination state, it is indicated by oblique lines, and the left window contamination level LD07 at the same address 07 has a low degree of contamination and is in a normal state. It can be grasped at a glance. Here, too, it can be grasped at a glance that the fire detection device 16 at address 15 needs to be cleaned considerably.

(Third Embodiment of Defacement Display)
FIG. 9 is an explanatory diagram showing a third embodiment of the stain display. As shown in FIG. 9, the contamination display 106 of the present embodiment by the contamination display control unit 32 of the disaster prevention receiver 10 consists of the left window contamination degree LDi and the right window contamination degree RDi in the order of the address i of the fire detection device 16. The sets are displayed side by side. Although the display is performed for each up line and down line, only the up line side is illustrated.

As in FIGS. 7 and 8, the degree of soiling in the soiled state is identified by diagonal lines, and the degree of soiling in the state of predicting soiling is identified by sand. It is possible to intuitively grasp the progress of contamination without looking at the analog value of .

Here, the identification display of the staining state and the staining predictive state is performed for the left window staining degree LDi and the right window staining degree RDi in the staining or staining predictive state. Alternatively, the contamination predictive state is identified and displayed. As this identification display, for example, like address 15, when the left window contamination degree LD15 is in the contamination state and the right window contamination degree RD15 is in the contamination premonitory state, priority is given to the identification display of the contamination state for the higher contamination degree LD15. Is going.

Such a contamination display 106 is obtained by reading out and displaying the contamination information 100 stored in the memory shown in FIG. It is possible to determine the necessity of cleaning by grasping the degree of contamination of the left and right translucent windows of each fire detection device 16 in the order in which the devices 16 are arranged.

(Fourth Embodiment of Defacement Display)
FIG. 10 is an explanatory diagram showing a fourth embodiment of the defacement display. As shown in FIG. 10, the contamination display 108 of the present embodiment by the contamination display control unit 32 of the disaster prevention receiver panel 10 displays the left window contamination degree LDi and the right window contamination degree RDi mixed in descending order of the degree of contamination. An address iL or iR obtained by combining the address i of the fire detection device 16 and the identification code L indicating the left window fire detection unit or the identification code indicating the right window fire detection unit is displayed as the address of the defacement display 108. there is Although the display is performed for each up line and down line, only the up line side is illustrated.

In this example, the left window contamination degree LD15 at address 15L is the largest, followed by the right window contamination degree RD07 at address 07R. It can be determined that 16 has a higher need for cleaning.

(Fifth embodiment of defacement display)
FIG. 11 is an explanatory diagram showing a fifth embodiment of the stain display. As shown in FIG. 11, the contamination display 110 of the present embodiment by the contamination display control unit 32 of the disaster prevention receiver 10 shows the degree of contamination of the left window of the i-th fire detection device 16 that redundantly monitors the same monitoring area ARi. Control is performed to display in the order of address i so that LDi and the right window contamination level RLi+1 of the i+1-th fire detection device 16 are adjacent to each other. Although the display is performed for each up line and down line, only the up line side is illustrated.

For example, since the fire detection device 16 at address 01 and the fire detection device 16 at address 02 redundantly monitor the same monitoring area AR12, the right window pollution degree RD01 at address 01 and the left window pollution degree at address 02 LD2 are arranged adjacent to each other. This relationship is the same for other fire detection devices 16 that monitor the same monitoring area adjacent to each other.

As in FIGS. 7 and 8, the degree of contamination in the contamination state is identified and displayed as indicated by diagonal lines, and the degree of contamination in the state of predicting contamination is identified and displayed as indicated by sand. Even without looking at the value, it is possible to grasp the progress of staining at a glance.

According to such a contamination display 110, one contamination degree corresponding to each translucent window (fire detection unit) for the same monitoring area redundantly monitored by two adjacent fire detection devices 16 is displayed. and the degree of contamination of the other can be easily and reliably understood. For example, the right window contamination degree RD07 of address 07 is in the contamination state indicated by hatched lines, but the right window contamination degree RD08 of address 08, which monitors the same monitoring area AR08 redundantly, is at a normal level, indicating that cleaning is not necessary. It is possible to judge at a glance that there is no urgent need.

Regarding this point, even for address 15 whose left window contamination degree LD15 has reached the contamination state, the left window contamination degree LD16 of address 14, which redundantly monitors the same monitoring area AR15, is at the normal level. It is possible to easily determine that there is no urgent need for cleaning.

A defacement display 120 in FIG. 12 shows an embodiment in which the defacement information 100 is displayed in the order of addresses of the fire detection devices 16 with the longitudinal direction of the tunnel as the horizontal direction.

A defacement display 130 in FIG. 13 shows an embodiment in which the defacement information 100 is displayed in the order of addresses of the fire detection devices 16 corresponding to the monitor areas AR1, AR2, .

When the contamination displays 110, 120, and 130 shown in FIGS. 11 to 13 are displayed on the liquid crystal display, if they cannot be displayed on one screen, a display method such as switching display or scroll display is used.

(Sixth Embodiment of Defacement Display)
As a sixth embodiment of the defacement display by the defacement display control unit 32 provided in the disaster prevention receiving panel 10, the defacement display according to the first to fifth embodiments shown in FIGS. Therefore, it may be selected and displayed as necessary.

[Modification of the present invention]
(Fire detection device)
Although the above-described embodiment exemplifies a two-wavelength fire detection device, the present invention is not limited to this, and other methods may be used. For example, in addition to the two wavelengths described above, radiation energy in a wavelength band near 3.8 μm, which is on the short wavelength side with respect to the 4.4 to 4.5 μm band, which is the resonance radiation band of CO ₂ , is calculated in the same manner as in the two wavelength formula. It is also possible to use a three-wavelength type flame detector that detects the presence of a flame by detecting by the above method and determines the presence or absence of a flame based on the relative ratio of each light receiving signal in these three wavelength bands.

(Detection of contamination sign state and contamination state)
In the above-described embodiment, the fire detection device detects the warning state and the warning state and transmits them to the disaster prevention receiving panel, but the present invention is not limited to this. For example, since the disaster prevention receiver collects and stores the degree of contamination of the left window and the degree of contamination of the right window of the fire detection device, the degree of contamination of the left window or the degree of contamination of the right window is controlled by the contamination display control unit of the disaster prevention receiver. When the predetermined pollution sign threshold is reached, the pollution sign state is displayed in the left window pollution degree or the right window pollution degree, and the left window pollution degree or the right window pollution degree is higher than the pollution sign threshold. When the contamination threshold is reached, the contamination state may be displayed in the left window contamination degree or the right window contamination degree. This makes it possible to reduce the processing load on the fire detector device side.

The left window and the right window may be, for example, a single translucent window that is curved so as to cover from the left light receiving section to the right light receiving section. In this case, the portion corresponding to the front of the sensor of the left fire detection unit (light receiving unit) is the left translucent window of this embodiment, and the portion corresponding to the front of the sensor of the right fire detection unit (light receiving unit) is the right translucent window. corresponds to

(Description of degree of contamination)
In the above embodiment, the contamination display control unit of the disaster prevention receiver panel displays the left window contamination degree and the right window contamination degree as analog values (light attenuation rate) of the degree of contamination, but is not limited to this. For example, characters, symbols, graphics, or colors may be used to indicate the degree of staining in multiple stages. By displaying the degree of contamination in multiple stages using characters, symbols, graphics, or colors in this way, it is possible to intuitively grasp the degree of contamination and determine the necessity of cleaning.

In addition, in each embodiment of the contamination display shown in FIGS. 7 to 13, numerical display of the degree of contamination is not essential and may be omitted. Even if the numerical display of the degree of contamination is omitted, the urgency and priority of cleaning can be easily and efficiently grasped, and the object of the present invention can be achieved.

In addition, in each embodiment of the stain display shown in FIGS. 7 to 13, the degree of stain or degree of stain may be displayed in descending order of the monitoring area with the highest degree of cleaning urgency.

(Others) Monitoring Area The present invention includes appropriate modifications that do not impair its purpose and advantages, and is not limited by the numerical values shown in the above embodiments.

1a: Up line tunnel 1b: Down line tunnel 10: Disaster prevention receiving panels 12a, 12b: Signal line 16: Fire detection device 16L: Left window fire detection unit 16R: Right window fire detection units 18, 34: Control units 20a, 20b, 35: Transmission unit 31: Fire monitoring control unit 32: Defacement display control unit 36L: Left translucent window 36R: Right translucent window 38a, 38b: Light receiving units 40a, 40b: Amplification processing unit 42: Test light source unit 44: Defacement light receiving unit 46: amplifier unit 48: fire determination unit 50: defacement processing unit

Claims (1)

A disaster prevention system in which a fire detection device is arranged at each boundary of a plurality of continuous monitoring areas to monitor the occurrence of a fire in the monitoring area,
a display unit that displays information about the fire detection device;
a control unit for displaying the information on the display unit;
with
The fire detection device
A first translucent window and a second translucent window corresponding to each of the monitoring areas adjacent to each other on the boundary of the monitoring area in which the fire detection device is arranged;
determining whether or not a fire has occurred in each of the monitoring areas by receiving light from each of the monitoring areas through the first translucent window and the second translucent window;
A first window contamination degree indicating a contamination state of the first translucent window corresponding to one of the mutually adjacent monitoring areas, and a second translucent window corresponding to the other of the mutually adjacent monitoring areas. Detecting the degree of contamination on the second window, which indicates the contamination state of
The control unit
The first window of one of the fire detectors arranged at each of the adjacent boundaries on the display unit based on the first window contamination degree and the second window contamination degree detected by the plurality of fire detection devices. The pairs of the first window pollution degree and the second window pollution degree are displayed in the order of arrangement of the plurality of fire detection devices so that the pollution degree and the second window pollution degree of the other fire sensor are aligned. A disaster prevention system characterized by

Images