JP7100743B2 - Disaster prevention system - Google Patents

Description

The present invention relates to a disaster prevention system that monitors a fire in a monitoring area divided into predetermined intervals in the longitudinal direction of a tunnel by a fire detection device connected to a signal line drawn from a disaster prevention receiver.

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 detection device that monitors the fire is installed and connected to the signal line drawn from the disaster prevention receiver. 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, and the fire detection device has detection areas in both the left and right directions, and the fire detection devices are arranged adjacent to each other. The device monitors fires in the same monitoring area more than once.

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

The fire detection device installed in the tunnel is transparent to maintain the flame monitoring function because the dirt on the translucent window increases with the passage of time due to the adhesion of pollutants floating in the environment. We monitor the dirt on the windows and clean the translucent windows at regular intervals.

To monitor the dirt on the translucent window, the test light is periodically received from the test light source provided in the fire detection device, enters the translucent window via the space on the detection output area side outside the detection device, and is received by the light receiving element. , The light receiving level at this time is compared with that at the time of initial fouling, and the dimming rate is obtained as the degree of fouling. I'm letting you. When the pollution alarm of the fire detection device is output, it is necessary to take measures to clean the translucent window of the fire detection device that has become dirty.

Further, a stain sign threshold lower than the stain threshold is set, and when the stain degree exceeds the stain sign threshold, a stain sign signal is transmitted to the disaster prevention receiving panel to output a stain sign alarm. Regarding the fire detection device pollution sign warning, if the number of fire detection devices that are in a pollution sign state increases and the period until the scheduled cleaning is long, the plan will be revised to accelerate the cleaning work. Is possible.

By the way, as a method of monitoring the fouling of the fire detection device by the disaster prevention receiver, the degree of progress of the fouling state such as normal, fouling sign, and fouling is displayed in the order of the tunnel length direction based on the fouling degree detected by the fire detection device. As a result, it is possible to grasp the degree of fouling and the tendency of fouling of the fire detection device of the entire tunnel (Patent Document 1).

Japanese Unexamined Patent Publication No. 2000-315285 JP-A-2002-0263664

By the way, in the disaster prevention system that displays the progress of the fouling state such as normal, fouling sign, and fouling in the order of the tunnel length direction based on the fouling degree detected by the fire detection device by the disaster prevention receiving panel, the fire detection. The device does not distinguish the fouling state of the left translucent window of the right translucent window provided corresponding to the left and right monitoring areas, and the fouling degree of both translucent windows must reach the fouling sign threshold. Normal, if one of the translucent windows exceeds the fouling sign threshold, it is judged to be fouling, and if any one of the translucent windows exceeds the fouling threshold, it is judged to be fouling. The degree of progress is displayed in the order of the tunnel length direction.

The display of the dirty state of the fire detection device by such a disaster prevention receiver is for observing the necessity of cleaning the translucent window provided in the fire detection device, but the translucent window of the fire detection device is used. When considering the necessity of cleaning and planning the cleaning work, it is not always efficient to display the degree of progress of the fouling state in the order of the tunnel length direction (arrangement order). In addition, in the conventional disaster prevention system, the state of contamination is displayed without distinguishing between the left and right translucent windows, so it may not be possible to accurately determine the need for cleaning.

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

Further, for example, in the state of fouling of the fire detection device installed in the tunnel, the progress of fouling of one of the translucent windows provided on the left and right may be faster than that of the other depending on the direction of the airflow flowing in the tunnel. Therefore, for example, even if one of the translucent windows of a fire detection device becomes a sign of fouling, the other translucent window may be normal (non-fouled or lightly contaminated). In such a case, the translucent window of the fire detection device is displayed on the disaster prevention receiver as being in a fouling sign state, and in this case, the urgency is higher than when both translucent windows are in a fouling sign state. No, but 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 becomes dirty in the adjacent fire detection devices that monitor the same monitoring area in duplicate. If the translucent window of the other fire detection device monitoring the same monitoring area is in the normal state, the monitoring function in the monitoring area is maintained by the monitoring by the translucent window of the fire detection device in the normal state. If this is known, it will take a relatively long time to clean the fire detection device that has become dirty, but in this case as well, the conventional display that does not consider the dirt on the left and right translucent windows. In that case, it is necessary to urgently clean the fire detection device that has become dirty more than necessary, and there is a possibility that the necessity of cleaning cannot be properly determined.

It is an object of the present invention to provide a disaster prevention system capable of grasping a dirty state of a translucent window provided corresponding to a monitoring area on both the left and right sides of a fire detection device and appropriately determining the necessity of cleaning. And.

(Disaster prevention monitoring system)
The present invention is a disaster prevention system for monitoring the occurrence of a fire in a monitoring area by connecting a fire detection device arranged at each boundary of a plurality of monitoring areas divided at predetermined intervals along a predetermined direction to a receiving device.
The fire detector is
It is equipped with a first translucent window and a second translucent window corresponding to each of the monitoring areas adjacent to each other adjacent to the boundary of the monitoring area where the fire detection device is arranged.
By receiving light rays from each of the monitoring areas through the first translucent window and the second translucent window, it is determined whether or not a fire has occurred in each of the monitoring areas.
The fire detection device further comprises a first window fouling degree indicating the fouling state of the first translucent window corresponding to one of the mutually adjacent monitoring areas and a second transparency corresponding to the other of the mutually adjacent monitoring areas. A stain detector that detects the degree of stain on the second window, which indicates the state of contamination of the optical window, and sends it to the receiver.
The receiving device is
Receives the degree of pollution of the first window and the degree of pollution of the second window from multiple fire detectors,
A set of the first window fouling degree and the second window fouling degree so that the first window fouling degree of one fire detection device and the second window fouling degree of the other fire detection device are arranged side by side at the adjacent boundary. Is displayed in the order of arrangement of a plurality of fire detection devices.

(Divided into left window and right window and displayed in descending order of stain degree)
The receiving device divides the first window fouling degree and the second window fouling degree of a plurality of fire detection devices and displays them in descending order of fouling degree.

(Displays a combination of the degree of contamination of the left window and the right window)
The receiving device displays the first window fouling degree displayed in descending order of fouling degree in combination with the corresponding second window fouling degree, and corresponds to one window fouling degree displayed in descending order of fouling degree. The other window stain degree is displayed in combination.

(Displays the degree of pollution in the order of the fire detection devices)
The receiving device displays the set of the first window fouling degree and the second window fouling degree of the plurality of fire detection devices in the order of the plurality of fire detection devices.

(The degree of contamination of the left window and the degree of contamination of the right window are mixed and displayed in descending order of the degree of contamination)
The receiving device displays a mixture of the first window fouling degree and the second window fouling degree of the plurality of fire detection devices in descending order of fouling degree.

(Differentiation of stain signs and stains by the fire detection device and identification display by the receiving device)
The fire detector is
When the degree of fouling of the first window or the degree of fouling of the second window has reached a predetermined fouling sign threshold value, a fouling sign signal indicating a fouling sign state is transmitted to the receiving device.
When the first window fouling degree or the second window fouling degree reaches a predetermined fouling threshold value higher than the fouling sign threshold value, a fouling signal is transmitted to the receiving device.
The receiving device is
When a stain sign signal is received, the stain sign status is identified and displayed on the first window pollution degree or the second window pollution degree.
When a stain signal is received, the degree of stain on the first window or the degree of stain on the second window is used to identify and display the stain state.

(Omen of stains on the receiving device, judgment of stains, and identification display)
The receiving device is
When the degree of contamination of the first window or the degree of contamination of the second window has reached a predetermined threshold for predicting contamination, the degree of contamination of the first window or the degree of contamination of the second window is made to identify and display the precursor state of contamination.
When the first window fouling degree or the second window fouling degree reaches a predetermined fouling threshold value higher than the fouling sign threshold value, the fouling state is identified and displayed on the first window fouling degree or the second window fouling degree.

The present invention is a disaster prevention system in which a plurality of fire detection devices arranged at the boundaries of monitoring areas divided at predetermined intervals along a predetermined direction are connected to a signal line drawn from a receiving device. The device receives radiation from the two monitoring areas through the corresponding translucent windows and converts it into an electrical signal, and based on the electrical signal, determines a fire in the corresponding monitoring area. The fire judgment unit that sends a fire judgment signal to the receiving device detects the degree of contamination of the first window, which indicates the state of contamination of one translucent window, and the degree of contamination of the second window, which indicates the state of contamination of the other translucent window. The receiving device is provided with a fouling detection unit that transmits a fouling degree detection signal corresponding to these to the receiving device, and the receiving device includes a fire monitoring control unit that receives a fire judgment signal from the fire detection device and gives an alarm, and a plurality of fire detection units. Since it is equipped with a stain display control unit that displays the degree of stain on the first window and the degree of stain on the second window received from the device in a predetermined order, for example, a monitoring area divided into predetermined intervals along the longitudinal direction of the tunnel. In the case of multiple fire detection devices that monitor fires in the monitoring area corresponding to the first and second translucent windows installed at the boundary, the first window provided in the multiple fire detection devices by the receiving device. By displaying the degree of fouling and the degree of fouling of the second window in a predetermined order, for example, the degree of fouling such as normal, fouling sign, and fouling can be grasped for each of the first and second translucent windows, and the translucent window. Make it possible to properly determine the need for cleaning.

(Effect of dividing into left window and right window and displaying in descending order of stain degree)
In addition, the stain 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, so that the pollution degree of the fire detection device is the highest. It is divided into the first and second translucent windows, and they are displayed in descending order of the degree of fouling. It is possible to judge.

(Effect of displaying the degree of contamination of the left window and the right window in combination)
Further, the stain display control unit displays the first window stain degree displayed in descending order of the stain degree in combination with the corresponding second window stain degree, and displays the second window stain degree displayed in descending order of the stain degree. Since the corresponding first window fouling degree is displayed in combination, the second window fouling degree of the same fire detection device corresponds to, for example, the first window fouling degree displayed at the top in descending order of fouling degree. By displaying it, it is possible to appropriately judge the necessity of cleaning in consideration of the first and second degree of contamination.

(Effect of displaying the degree of pollution in the order of the fire detection devices)
In addition, the pollution display control unit of the receiving device displays the set of the first window pollution degree and the second window pollution degree of the plurality of fire detection devices in the order of the arrangement of the plurality of fire detection devices, so that the inside of the tunnel can be displayed. The set of the first window fouling degree and the right window fouling degree is displayed along the arrangement direction of the fire detection device, and the necessity of cleaning is considered in consideration of the first and second fouling degrees corresponding to the arrangement position in the tunnel. Make it possible to judge appropriately.

(Effect of displaying the stains of the left window and the right window in descending order of stain degree)
In addition, the fouling display control unit of the receiving device displays the fouling degree of the first window and the fouling degree of the second window of a plurality of fire detection devices in a mixed manner in descending order of the fouling degree. By displaying the second window fouling degree in descending order of fouling degree, it is possible to grasp the translucent window having the highest need for cleaning and appropriately judge the need for cleaning.

(Effect of displaying the degree of pollution of the monitoring area to be duplicated in order)
Further, there are a plurality of stain display control units of the receiving device so that the degree of contamination of one of the fire detection devices that monitors the same monitoring area in duplicate and the degree of contamination of the other fire detection device are arranged adjacent to each other. Since the set of the first window pollution degree and the second window pollution degree of the fire detection device is displayed in the order of the arrangement of multiple fire detection devices, the two adjacent fire detection devices monitor the fires in duplicate. The relationship between the degree of fouling of one and the degree of fouling of the other corresponding to each translucent window for the same monitoring area can be easily and surely understood. If the degree of fouling is within the normal level, the monitoring area cannot be duplicated, but it is normally monitored by the other fire detection device whose degree of fouling is at the normal level, and the degree of fouling of one of the fire detection devices is high. Even if the pollution level is reached, it is possible to judge that the need for cleaning is not in a tight situation, and it is possible to appropriately judge the need for cleaning.

(Effects of discriminating between signs of fouling and fouling by the fire detection device and identification display by the receiving device)
Further, the fouling detection unit of the fire detection device transmits a fouling sign signal indicating a fouling sign state to the receiving device when the fouling degree of the first window or the fouling degree of the second window reaches a predetermined fouling sign threshold. When the degree of stain on one window or the degree of stain on the second window reaches a predetermined stain threshold higher than the stain sign threshold, a stain signal is transmitted to the receiving device, and the stain display control unit of the receiving device uses the stain sign signal. The corresponding left window fouling degree or right window fouling degree is used to identify and display the fouling sign state, and the first window fouling degree or second window fouling degree corresponding to the fouling signal is used to identify and display the fouling state. When the degree of contamination of one window and the degree of contamination of the second window are divided and displayed in descending order of the degree of contamination, whether the large degree of contamination displayed at the beginning is in the state of contamination or in the state of sign of contamination, respectively. It can be easily grasped by the identification display, and it is possible to more appropriately judge the necessity of cleaning when the display is performed in descending order of the degree of contamination.

(Effects of stain signs and stain judgment and identification display on the receiving device)
Further, when the degree of stain on the first window or the degree of stain on the second window reaches a predetermined threshold value for predicting stain, the stain display control unit of the receiving device is in a state of predicting stain on the degree of stain on the first window or the degree of stain on the second window. Is displayed to identify and display, and when the degree of stain on the first window or the degree of stain on the second window reaches a predetermined stain threshold higher than the threshold for predicting stain, the degree of stain on the first window or the degree of stain on the second window is identified. Since it is displayed, it is easy to understand whether the display of the large degree of pollution is in the state of fouling or the state of sign of fouling by each identification display, and it is necessary to clean when displaying in descending order of degree of fouling. It is possible to make the judgment of.

In addition, it is possible to reduce the processing load on the fire detection device side by concentrating the determination of the fouling sign state and the fouling state on the receiving device.

Explanatory drawing showing the outline of the disaster prevention system according to the present invention by taking fire monitoring in a tunnel as an example. Explanatory drawing showing the warning area in the tunnel to be duplicated and monitored by the fire detection device Block diagram showing the outline of the functional configuration of the fire detection device Explanatory drawing 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 pollution information stored in the memory of the disaster prevention receiver Explanatory drawing which showed the 1st Embodiment of the stain display Explanatory drawing which showed the 2nd Embodiment of the stain display Explanatory drawing which showed the 3rd Embodiment of the stain display Explanatory drawing which showed the 4th Embodiment of a stain display Explanatory drawing which showed the 5th Embodiment of the stain display Explanatory drawing which showed other display form by 5th Embodiment Explanatory drawing which showed other display form by 5th Embodiment

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

Inside the up line tunnel 1a and the down line tunnel 1b, fire detection devices 16 are installed along the wall surface in the longitudinal direction of the tunnel, for example, at intervals of 50 meters. The fire detection device 16 has two sets of light receiving units provided with translucent windows on the left and right sides, and thus has monitoring areas on both the left and right sides in the longitudinal direction of the tunnel, and along the longitudinal direction of the tunnel. The monitoring areas are continuously arranged so as to overlap with the adjacent fire detection devices.

A power supply and signal lines 12a and 12b are pulled 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 the fire detection device 16 is connected to the fire detection device 16. Addresses are preset in the order of arrangement. The fire detection device 16 may be set with unique IDs (identifiers) in order of arrangement instead of addresses.

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

As shown in FIG. 2, fire detection devices 16 are installed along the tunnel side wall of the up line tunnel 1a at intervals of, for example, 50 meters. This divides the tunnel into monitoring areas AR1, AR2, ... ALi-1, ALi, ALi + 1, ... At intervals of 50 meters in the longitudinal direction, and a fire detection device 16 is installed at the boundary. Each monitoring area has a size of, for example, 50 m in the longitudinal direction x 20 m in the lateral direction.

The fire detection device 16 includes a left window light receiving unit provided with a left translucent window (first window) for individually monitoring the left and right monitoring areas, and a right window provided with a right translucent window (second window). A light receiving unit is provided. Here, the left-right relationship of the fire detection device 16 is defined in the present embodiment in a state where 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 + 1th fire detection device 16 arranged at the right end use the monitoring area ARi by the right window light receiving portion of the i-th fire detection device 16. At the same time, the same monitoring area ARi is monitored by the left window light receiving unit of the i + 1th fire detection device 16 in duplicate.

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

The fire detection device 16 monitors the fire by observing the radiation from the flame caused by the flame generated in the monitoring area on the left or right side, for example, infrared rays by the light receiving part of the left window, and also observes the fire by the light receiving part of the right window. When a fire is detected, a fire signal including a preset unique address and identification information indicating whether the left window is detected or the right window is detected is transmitted to the disaster prevention receiving panel 10.

Further, the fire detection device 16 independently detects the fouling of the translucent window provided in the light receiving portion, for example, once a day, independently on the left and right sides, and determines the degree of fouling detected and whether the left window is detected or the right window is detected. A stain detection signal including identification information indicating the above is transmitted to the disaster prevention receiving panel 10.

Further, when the degree of pollution detected periodically exceeds a predetermined pollution sign threshold, the fire detection device 16 disaster-prevents the pollution sign signal including the pollution sign information and the identification information indicating whether the left window is detected or the right window is detected. It is transmitted to the receiving board 10, and when the degree of fouling exceeds a predetermined fouling threshold, a fouling signal including fouling information and identification information indicating whether the left window is detected or the right window is detected is transmitted to the disaster prevention receiving board 10.

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

As shown in FIG. 3, the fire detection device 16 includes a left window fire detection unit 16L and a right window fire detection unit 16R, and as represented by the left window fire detection unit 16L, a light receiving unit including a light receiving sensor. 38a, 38b, amplification processing units 40a, 40b corresponding to each of these, a control unit 34, and a transmission unit 35 are provided. The left translucent window 36L provided on the detector cover is arranged in front of the light receiving portions 38a and 38b, and the light energy from the external monitoring area is received through the left translucent window 36L through the light receiving portions 38a and 38b. Is incident on.

Further, in order to monitor the fouling of the left translucent window 36L, a fouling detecting section including a test light source section 42, a fouling light receiving section 44 and an amplification section 46 is provided.

Here, as shown in FIG. 4, in the fire detection device 16, the left translucent window 36L and the right translucent window 36R are provided in the sensor accommodating portion 54 provided in the upper part of the housing 52, and the left translucent window 36R is provided. Inside each of the sex window 36L and the right translucent window 36R, a light receiving unit and the like of the left window fire detection unit 16L and the right window fire detection unit 16R shown in FIG. 3 are arranged. Further, two sets of translucent windows 56 for a test light source are provided in the vicinity of the left translucent window 36L and the right translucent window 36R at positions where the light receiving portion can be seen, and the individual test light source portions 42 are housed. ..

Referring to FIG. 3 again, the right window fire detection unit 16R has the same configuration as the left window fire detection unit 16L, but the control unit 34 is provided as a unit common to both, and for example, the hardware includes a CPU, a memory, and various types. A computer circuit or the like equipped with an input / output port or the like is used. Further, the control unit 34 is provided with a fire determination unit 48 and a stain treatment unit 50 as functions realized by executing the program.

The left window fire detection unit 16L monitors a fire by, for example, a two-wavelength flame detection principle. The light receiving unit 38a 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 a flame, from the light energy incident through the left translucent window 36L. After selective transmission, 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 40a to obtain a light receiving signal corresponding to the amount of energy and output to the control unit 34.

The light receiving unit 38b selectively transmits radiant energy of 5 to 6 μm from the light energy incident through the left translucent window 36L by an optical wavelength bandpass filter, and detects the radiant energy by the light receiving sensor. After performing photoelectric conversion, the amplification processing unit 40b performs predetermined processing such as amplification to obtain a light receiving signal corresponding to the amount of energy and outputs the signal to the control unit 34.

The fire determination unit 48 provided in the control unit 34, for example, takes a relative ratio of the received light signal levels output from the amplification processing units 40a and 40b, determines the presence or absence of a flame by comparing with a predetermined threshold value, and determines the presence or absence of a flame. When a fire is detected by the presence determination, the transmission unit 35 is instructed to display the fire determination information and the identification information indicating the left window detection in the response message to the call message matching the self-address from the disaster prevention receiving panel 10. By setting, control is performed to transmit to the disaster prevention receiving panel 10 as a fire determination signal.

The stain detection unit composed of the test light source unit 42, the stain light receiving unit 44, and the amplification unit 46 sets the test light source unit 42 in a predetermined cycle, for example, once a day, according to an instruction from the stain processing unit 50 of the control unit 34. It blinks and emits a predetermined test light, and is incident on the fouling light receiving unit 44 through the left translucent window 36L. This test light is converted into an electric signal by a light receiving sensor provided in the fouling light receiving unit 44 and amplified. Amplification is performed by the unit 46, and a stain detection signal corresponding to the degree of contamination of the left translucent window 36L is output to the control unit 34.

When the fouling detection signal from the amplification unit 46 is obtained, the fouling processing unit 50 of the control unit 34 compares the pre-recorded fouling detection signal level at the time of no fouling with the fouling detection signal level obtained by the fouling treatment. Then, the degree of contamination is detected by calculating the current rate. By instructing the control unit 34 on the detected degree of fouling and setting the fouling information indicating the fouling degree value and the identification information indicating the left window detection in the response message to the call message matching the self-address, the fouling detection is performed. Control is performed to transmit the signal to the disaster prevention receiving panel 10.

The fouling detection by the fouling processing unit 50 is carried out by receiving a periodic (for example, once a day) fouling treatment execution instruction signal from the disaster prevention receiving panel 10, and the fouling detection signal is returned as this response signal. You can also do it.

Further, the pollution processing unit 50 of the control unit 34 instructs the transmission unit 35 when the detected pollution degree exceeds a predetermined pollution sign threshold value, and instructs the transmission unit 35 to call a telegram (or the previous pollution) that matches the self-address. By setting the fouling sign information and the identification information indicating the left window detection in the response message to the processing execution instruction signal), the control is performed to transmit the fouling sign signal to the disaster prevention receiving panel 10.

Here, when the degree of pollution is added to the pollution information transmitted to the disaster prevention receiving board 10, the disaster prevention receiving board 10 may perform the comparison processing with the dirt sign threshold value and the determination of the dirt sign. In this case, the fouling sign threshold is set and registered in the disaster prevention receiving panel 10.

Further, the fouling processing unit 50 of the control unit 34 instructs the transmission unit 35 to perform disaster prevention when the degree of fouling based on the fouling detection signal from the amplification unit 46 exceeds a predetermined fouling threshold value higher than the fouling sign threshold value. By setting the fouling information and the identification information indicating the left window detection in the call message from the receiving board 10 that matches the self-address, control is performed to transmit the fouling signal to the disaster prevention receiving board 10.

In addition, when the pollution degree is added to the pollution information transmitted to the disaster prevention receiving board 10, the disaster prevention receiving board 10 may perform the comparison processing with the pollution threshold value and the judgment of the pollution. In this case, the pollution threshold value is set and registered in the disaster prevention receiving panel 10.

Here, the fouling treatment unit 50 of the control unit 34 obtains the dimming rate of the left translucent window 36L indicating the degree of fouling based on the fouling detection signal from the amplification unit 46, and receives the disaster prevention using this dimming rate as the fouling degree. Along with transmitting to the board 10, a stain sign and a stain determination process are performed.

The fouling treatment unit 50 calculates the dimming rate of the left translucent window 36L based on the level of the foul detection signal at the time of shipment from the factory where the left translucent window 36L is free of fouling, at the start of fire monitoring, or at the end of cleaning. It is stored as Er, and each time a stain detection signal of detection level E is obtained from the amplification unit 46, the dimming rate D is set to D = 1- (E / Er).
Calculated as.

The dimming rate D calculated in this way is a value that fluctuates in proportion to the degree of fouling of the translucent window 36, and in the following description, the dimming rate will be described as the degree of fouling.

Further, the fouling sign threshold value used by the fouling processing unit 50 for determining the fouling sign is that the left translucent window 36L is slightly contaminated, but the fire monitoring of the entire monitoring area by the light receiving units 38a and 38b can be maintained ( A predetermined first pollution level (which can detect a fire of a predetermined scale), for example, a dimming rate of 75% is set.

Further, the fouling threshold value used by the fouling treatment unit 50 for determining fouling is a predetermined second fouling level higher than the first fouling level, for example, a dimming rate of 85, which makes it impossible for the light receiving unit to monitor the entire monitoring area. Set to a percentage.

The treatment of the stain detection unit 50 is the same for the stain 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 receiver. As shown in FIG. 5, the disaster prevention receiving panel 10 includes a control unit 18, and the control unit 18 is a function realized by, for example, executing a program, and is provided with the functions of the fire monitoring control unit 31 and the stain display control unit 32. .. Further, as the hardware of the control unit 18, a computer circuit 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 fire detection devices 16 installed in the up line tunnel 1a and the down line tunnel 1b are provided in the signal lines 12a and 12b drawn from the transmission units 20a and 20b, respectively. Multiple units are connected.

Further, the control unit 18 has a speaker, an alarm unit 22 equipped with an alarm indicator, a display unit 24 equipped with a liquid crystal display, a printer 25, an operation unit 26 equipped with various switches, and an IG that communicates with external monitoring equipment. A modem 28 for connecting slave station equipment is provided, and an IO unit 30 for connecting ventilation equipment, alarm display board equipment, radio rebroadcasting equipment, camera monitoring equipment, lighting equipment, and fire extinguishing pump equipment is provided.

The fire monitoring control unit 31 of the disaster prevention receiving panel 10 repeatedly transmits a call message including a poll command in which the addresses of the fire detection devices 16 are sequentially specified via the transmission units 20a and 20b, and the fire detection device 16 has its own address. When a call message that matches is received, a response message including detection information such as the degree of pollution, a sign of pollution, and pollution detected immediately before and identification information indicating whether the left window is detected or the right window is detected is returned.

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

[Fouling monitoring by disaster prevention receiver]
(Collection and memory of pollution information)
The pollution display control unit 32 of the disaster prevention receiving panel 10 is shown in the memory of the control unit 18 based on the pollution degree information set in the response message received from the fire detection device 16 and the identification information of the left window detection or the right window detection. The pollution information 100 of the fire detection device 16 shown in 6 is stored.

The pollution information 100 stored in the memory of FIG. 6 is detected by the left window pollution degree LDi and the right window fire detection unit 16R detected by the left window fire detection unit 16L of FIG. 3 corresponding to the address of the fire detection device 16. The left window pollution degree RDi that has been made is stored. Note that i indicates an arbitrary address of the fire detection device 16.

Here, assuming that the tunnel lengths of the up line tunnel 1a and the down line tunnel 1b shown in FIG. 1 are, for example, 1 km each, 20 fire detection devices 16 are arranged at intervals of 50 meters, and the pollution information in FIG. In 100, the case where the left window fouling degrees LD01 to LD20 and the right window fouling degrees RD01 to RD20 are stored corresponding to the addresses 01 to 20 set for the 20 fire detection devices 16 is taken as an example. Further, the left window fouling degrees LD01 to LD20 and the right window fouling degrees RD01 to RD20 are analog values indicating the dimming rate of the translucent window.

The stain display control unit 32 has a left window stain degree and a right window stain degree corresponding to the address based on the stain information 100 of FIG. 6 when a predetermined operation for confirming the stain state by the operation unit 26 is performed. Is displayed on the liquid crystal display of the display unit 24 in a predetermined order, and is controlled to be printed out by the printer 25.

Further, the stain display control unit 32 of the disaster prevention receiving panel 10 may display a list of the left window stain degree and the right window stain degree corresponding to the address on the liquid crystal display of the display unit 24 based on the stain information 100 of FIG. When printing is output by the printer 25, the left window stain degree and the right window stain degree are controlled to be identified and displayed by color coding or the like according to the stain sign or stain.

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

(First embodiment of stain display)
FIG. 7 is an explanatory diagram showing the first embodiment of the stain display. As shown in FIG. 7, the stain display 102 of the present embodiment by the stain display control unit 32 of the disaster prevention receiving panel 10 is divided into the left window stain information 102 and the right window stain information 104 based on the stain information 100 shown in FIG. It is displayed separately. The display is performed for each up line and down line, but only the up line side is shown.

In the left window fouling information 102, the left window fouling degree LDi is arranged in descending order of fouling degree corresponding to the address Ai of the up line side fire detection device 16. Further, in the right window fouling information 104, the right window fouling degree RDi is arranged in descending order of fouling degree corresponding to the address Ai of the fire detection device 16.

Further, regarding the left window fouling information 102, the left window fouling degree LD15 at the head address 15 having the highest fouling degree is in a fouling state as shown by diagonal lines because the fouling signal is received from the corresponding fire detection device 16. It identifies and displays that it is in. Further, the left window fouling degrees LD09, LD04, LD12 of the addresses 09, 04, 12 having the second to fourth fouling degree are shown in sand because the fouling sign signal is received from the corresponding fire detection device 16. It identifies and displays that it is in a state of signs of pollution.

Further, regarding the right window fouling information 104, the right window fouling degree RD07 at the head address 07 having the highest fouling degree is fouled as shown by diagonal lines because the fouling signal is received from the corresponding fire detection device 16. It identifies and displays that it is in a state. Further, the left window fouling degrees RD01 and RD09 having the second to third fouling degrees of the addresses 01 and 09 receive the fouling sign signal from the corresponding fire detection device 16, so that the fouling sign is shown in the sand. It identifies and displays that it is in a state.

For the identification display of being in a dirty state or a dirty sign state, the background or characters of the corresponding display portion shall be a predetermined color. For example, the fouling state is identified by red, and the fouling sign is identified by yellow.

By looking at the display of the left window stain information 102 and the right window stain information 104 arranged in descending order of the degree of contamination, the need for cleaning the fire detection device 16 at the address 15 of the left translucent window increases. As for the translucent window on the right side, it can be seen at a glance that the fire detection device 16 at address 07 needs to be cleaned. Since it has reached 85% and it is no longer possible to monitor the entire area of the caution area, it can be judged that the need for cleaning is even higher.

On the other hand, the fire detection device 16 at addresses 09, 04, 12 for the left translucent window and the fire detection device 16 at addresses 01, 15 for the right translucent window indicate a fouling sign state in the sand, that is, reduction. The light rate is less than 85% but reaches 75%, and it can be judged that the need for cleaning is the next highest.

(Second embodiment of stain display)
FIG. 8 is an explanatory diagram showing a second embodiment of the stain display. As shown in FIG. 8, the stain display of the present embodiment by the stain display control unit 32 of the disaster prevention receiving panel 10 is the same fire detection device 16 for the left window stain degree LDi of the left window stain display 102 shown in FIG. The right window pollution degree RDi in is displayed in combination. The display is performed for each up line and down line, but only the up line side is shown.

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

For example, the left window fouling degree LD15 of the address 15 having the highest fouling degree of the left window fouling display 102 is displayed in combination with the right window fouling degree RD15 of the same address 15. Here, since the left window fouling degree LD15 at the address 15 is in a fouling state, the identification display is shown by diagonal lines, and the right window fouling degree RD15 at the same address 15 is in a fouling sign state, so it is shown in sand. Identification is displayed.

In this case, the left window fouling degree LD15 at address 15 has a dimming rate of 85% and is in a fouling state, and the right window fouling degree RD15 at address 15 has a dimming rate of less than 85% but is 75%. It can be grasped at a glance that the fire detection device 16 at the address 15 is in a state of a sign of fouling and the need for cleaning is considerably high.

This point is the same as in the case where the right window stain display 104 is used as the base, and the left window stain degree LL07 of the same address 07 is set to the right window stain degree RD07 of the address 07 having the highest stain degree in the right window stain display 104. It is displayed in combination. Here, since the right window fouling degree RD07 of the address 07 is in a fouling state, the identification display shown by diagonal lines is performed, and the left window fouling degree LD07 of the same address 07 has a low fouling degree and is in a normal state. You can grasp it at a glance. Here, too, it can be grasped at a glance that the fire detection device 16 at the address 15 needs to be cleaned considerably.

(Third embodiment of stain display)
FIG. 9 is an explanatory diagram showing a third embodiment of the stain display. As shown in FIG. 9, the stain display 106 of the present embodiment by the stain display control unit 32 of the disaster prevention receiving panel 10 has the left window pollution degree LDi and the right window pollution degree RDi in the order of the address i of the fire detection device 16. The pairs are displayed side by side. The display is performed for each up line and down line, but only the up line side is shown.

Further, as in FIGS. 7 and 8, the degree of fouling in the fouling state is identified and displayed as shown by diagonal lines, and the degree of fouling in the sign of fouling is identified and displayed as shown by sand. It is possible to intuitively grasp the progress of pollution without looking at the analog value of.

Here, the identification display of the fouling state and the fouling sign state is performed for the left window fouling degree LDi and the right window fouling degree RDi in the fouling or fouling sign state, but the corresponding address i is also in the fouling state. Alternatively, an identification display of a sign of fouling is performed. As this identification display, for example, when the left window fouling degree LD15 is in a fouling state and the right window fouling degree RD15 is in a fouling sign state, as in the address 15, priority is given to the fouling state identification display for the higher fouling degree LD15. Is going.

Such a stain display 106 reads and displays the stain information 100 stored in the memory shown in FIG. 6 as it is, and discriminates and displays the stain state and the stain sign state, and detects a fire in the tunnel. In the order in which the devices 16 are arranged, the degree of contamination of the left and right translucent windows in each fire detection device 16 can be grasped, and the necessity of cleaning can be determined.

(Fourth embodiment of stain display)
FIG. 10 is an explanatory diagram showing a fourth embodiment of a stain display. As shown in FIG. 10, in the stain display 108 of the present embodiment by the stain display control unit 32 of the disaster prevention receiving panel 10, the left window stain degree LDi and the right window stain degree RDi are mixed and displayed in descending order of the stain degree. At the address of the stain display 108, an address iL or iR that is a combination of 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. There is. The display is performed for each of the up line and the down line, but only the up line side is shown.

In this example, the left window fouling degree LD15 at the address 15L is the maximum, the right window fouling degree RD07 at the address 07R is next, and both are the identification displays of the diagonal lines in the fouling state, but the fire detection device at the address 15 It can be determined that 16 has a higher need for cleaning.

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

For example, since the fire detection device 16 at address 01 and the fire detection device 16 at address 02 are monitoring the same monitoring area AR12 in duplicate, the right window pollution degree RD01 at address 01 and the left window pollution degree at address 02 are monitored. The LD2s are arranged so as to be adjacent to each other. This relationship is the same for other fire detection devices 16 that are adjacent to each other and monitor the same monitoring area in duplicate.

Further, as in FIGS. 7 and 8, the degree of fouling in the fouling state is identified and displayed as shown by diagonal lines, and the degree of fouling in the sign of fouling is identified and displayed as shown by sand, which is an analog of the degree of fouling. Even if you don't look at the value, you can see the progress of pollution at a glance.

According to such a stain display 110, one of the stain degrees corresponding to each translucent window (fire detection unit) for the same monitoring area that is additionally monitored by two adjacent fire detection devices 16. The relationship between the degree of contamination and the degree of contamination of the other can be easily and surely understood. For example, the right window fouling degree RD07 of the address 07 is in the fouling state shown by the diagonal line, but the right window fouling degree RD08 of the address 08, which monitors the same monitoring area AR08 in duplicate, is at the normal level and is cleaned. It is possible to judge at a glance that the need is not in a tight situation.

In this respect, the left window fouling degree LD16 of the address 14 that is monitoring the same monitoring area AR15 in duplicate is at the normal level even for the address 15 in which the left window fouling degree LD15 has reached the fouling state. It is possible to easily determine that the need for cleaning is not in a tight situation.

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

The pollution display 130 in FIG. 13 shows an embodiment in which the pollution information 100 is displayed in the order of the addresses of the fire detection devices 16 corresponding to the monitoring areas AR1, AR2, ... In the tunnel.

When the stain displays 110, 120, and 130 of FIGS. 11 to 13 are displayed on the screen of the liquid crystal display, if they do not fit on one screen, a display method such as a switching display or a scroll display is adopted.

(Sixth Embodiment of Contamination Display)
As the sixth embodiment of the stain display by the stain display control unit 32 provided on the disaster prevention receiving panel 10, the stain display according to the first to fifth embodiments shown in FIGS. 7 to 13 is performed by the operation unit 26 as a predetermined operation. Therefore, it may be selected and displayed as needed.

[Modified example of the present invention]
(Fire detection device)
The above embodiment takes a two-wavelength fire detection device as an example, but the present invention is not limited to this, and other methods may be used. For example, in addition to the above-mentioned two wavelengths, the radiation energy in the short wavelength side of the 4.4 to 4.5 μm band, which is the resonance radiation band of CO ₂ , for example, in the wavelength band near 3.8 μm, is the same as in the two wavelength type. It may be a three-wavelength type flame detector that detects by the method of the above and determines the presence or absence of a flame by the relative ratio of each received signal in these three wavelength bands.

(Detection of fouling sign state and fouling state)
In the above embodiment, the fire detection device detects the sign forecast state and the forecast state and transmits them to the disaster prevention receiving panel, but the present embodiment is not limited to this. For example, since the disaster prevention receiver collects and stores the left window stain degree and the right window stain degree of the fire detection device, the stain display control unit of the disaster prevention receiver can determine the left window stain degree or the right window stain degree. When the predetermined stain sign threshold is reached, the left window stain degree or the right window stain degree is used to identify and display the stain sign state, and the left window stain degree or the right window stain degree is higher than the stain predictive threshold. When the fouling threshold is reached, the fouling state may be identified and displayed on the left window fouling degree or the right window fouling 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 curved so as to cover the right light receiving portion from the left light receiving portion. 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 the present 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.

(Display content of stain degree)
In the above embodiment, the stain display control unit of the disaster prevention receiver displays the degree of stain on the left window and the degree of stain on the right window as an analog value (dimming rate) of the degree of stain, but the present invention is not limited to this. For example, the degree of fouling may be displayed by characters, symbols, figures, or colors indicating the degree of fouling in multiple stages. By displaying the degree of fouling in multiple stages by characters, codes, figures, or colors in this way, it is possible to intuitively grasp the degree of fouling and determine the necessity of cleaning.

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

Further, in each of the stain display embodiments shown in FIGS. 7 to 13, the degree of stain or the degree of stain may be displayed in the order of the monitoring area having the highest degree of cleaning tightness.

(others)
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 12a, 12b: Signal line 16: Fire detection device 16L: Left window fire detection unit 16R: Right window fire detection unit 18, 34: Control unit 20a, 20b, 35: Transmission unit 31: Fire monitoring control unit 32: Contamination display control unit 36L: Left translucent window 36R: Right translucent window 38a, 38b: Light receiving unit 40a, 40b: Amplification processing unit 42: Test light source unit 44: Stain light receiving unit 46: Amplification unit 48: Fire determination unit 50: Stain processing unit

Claims (7)

It is a disaster prevention system that monitors the occurrence of a fire in the monitoring area by connecting a fire detection device arranged at each boundary of a plurality of monitoring areas divided along a predetermined direction at predetermined intervals to a receiving device.
The fire detection device is
A first translucent window and a second translucent window corresponding to each of the monitoring areas adjacent to each other adjacent to the boundary of the monitoring area in which the fire detection device is arranged are provided.
By receiving light rays from each of the monitoring areas through the first translucent window and the second translucent window, it is determined whether or not a fire has occurred in each of the monitoring areas.
The fire detection device further corresponds to the degree of contamination of the first window indicating the contamination state of the first translucent window corresponding to one of the monitoring areas adjacent to each other and the other of the monitoring areas adjacent to each other. The degree of contamination of the second window, which indicates the state of contamination of the second translucent window, is detected and transmitted to the receiving device.
The receiving device is
The first window fouling degree and the second window fouling degree are received from the plurality of fire detection devices, and the first window fouling degree is received.
The first window fouling degree and the second window fouling degree so that the first window fouling degree of one of the fire detection devices and the second window fouling degree of the other fire detection device arranged at the adjacent boundaries are aligned. A disaster prevention system characterized in that a set of window pollution degree is displayed in the order of arrangement of the plurality of fire detection devices.
In the disaster prevention system according to claim 1,
The receiving device is a disaster prevention system characterized in that the first window fouling degree and the second window fouling degree of the plurality of fire detection devices are divided and displayed in descending order of fouling degree.
In the disaster prevention system according to claim 2,
The receiving device displays the first window fouling degree displayed in descending order of the fouling degree in combination with the corresponding second window fouling degree, and displays one window fouling degree displayed in descending order of fouling degree. , A disaster prevention system characterized by displaying a combination of the corresponding degree of window contamination of the other window.
In the disaster prevention system according to claim 1,
The receiving device is a disaster prevention system characterized in that a set of the first window fouling degree and the second window fouling degree of the plurality of fire detection devices is displayed in the order of the plurality of fire detection devices.
In the disaster prevention system according to claim 1,
The receiving device is a disaster prevention system characterized in that the first window fouling degree and the second window fouling degree of the plurality of fire detection devices are mixed and displayed in descending order of fouling degree.
In the disaster prevention system according to any one of claims 1 to 5,
The fire detection device is
When the first window fouling degree or the second window fouling degree reaches a predetermined fouling sign threshold value, a fouling sign signal indicating a fouling sign state is transmitted to the receiving device.
When the first window fouling degree or the second window fouling degree reaches a predetermined fouling threshold value higher than the fouling sign threshold value, a fouling signal is transmitted to the receiving device.
The receiving device is
When the fouling sign signal is received, the fouling sign state is identified and displayed on the fouling degree of the first window or the fouling degree of the second window.
A disaster prevention system characterized in that when the pollution signal is received, the pollution state is identified and displayed on the first window pollution degree or the second window pollution degree.
In the disaster prevention system according to any one of claims 1 to 5,
The receiving device is
When the first window fouling degree or the second window fouling degree reaches a predetermined fouling sign threshold value, the fouling sign state is identified and displayed on the first window fouling degree or the second window fouling degree.
When the first window fouling degree or the second window fouling degree reaches a predetermined fouling threshold value higher than the fouling sign threshold value, the fouling state is added to the first window fouling degree or the second window fouling degree. A disaster prevention system characterized by displaying identification.

Images