JP4656702B2 - Underground facility monitoring system for equipment burial - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a monitoring system for underground facilities such as a tunnel for burying or laying equipment such as a power cable, a communication cable, a gas pipe, and a water pipe in the basement. The present invention relates to a monitoring system for monitoring intrusion.
[0002]
[Prior art]
In recent years, facilities for laying equipment such as power cables, communication cables, gas pipes, and water pipes underground, such as caves, common grooves, information boxes, and electric wire common grooves, have become public facilities or private It is increasingly being built as a corporate facility. Many of these underground laying facilities are indispensable for daily life. Therefore, naturally, maintenance and inspection are necessary at all times, and it is necessary to monitor fires and destructive activities by unauthorized persons. In particular, power cables and communication cables should be called social arteries in the modern information age, but these cables are materially vulnerable to fires, and from this point of view there is also an unexpected situation such as fire. Monitoring to prevent is essential.
[0003]
Conventionally, as a monitoring system for an underground facility, for example, there is a system in which a heat sensor or a smoke detector is installed in an underground facility for fire detection and an alarm is transmitted to a monitoring center through wiring. In addition, measures against intruders such as unauthorized persons and vagrants have been taken, such as a staff member periodically visiting the underground facility once a day, for example.
[0004]
[Problems to be solved by the invention]
The underground facilities as described above are usually large in length or area, and usually ventilation equipment is provided in the communication hole with the ground, for example, every several hundred meters. Therefore, when a fire occurs in the underground facility, smoke may rise from the ventilation facility other than the nearest ventilation facility due to the flow of air from the ventilation facility in the underground facility. However, it was not possible to identify the ventilation facility that is the nearest communication hole, and it was not possible to take appropriate measures.
[0005]
Another problem is that the wiring is laid from the heat sensor and smoke sensor in the underground facility to the monitoring center, which is expensive.
[0006]
Furthermore, there is a problem that patrols of staff members as countermeasures against intruders and vagrants are not secure except when they are patroling.
[0007]
Furthermore, there are problems that the heat sensor and the smoke sensor are liable to malfunction due to high temperature and humidity in the passage of the underground facility and generation of various gases.
[0008]
The present invention has been made to solve the above-described problems, and it is an object of the present invention to obtain a monitoring system capable of accurately grasping the scale and position of a fire in an underground facility. Another object of the present invention is to provide an underground facility monitoring system that can realize a monitoring system at low cost when an alarm is transmitted to a remote monitoring center.
[0009]
[Means for Solving the Problems]
The invention of claim 1 is a monitoring system for underground facilities for burying equipment,
A plurality of fire detectors installed in a communication passage to the inside of the underground facility for burying the equipment and provided with an exhaust ventilation system for detecting a fire;
A control device that is connected to a plurality of fire detectors and transmits a fire detection signal together with identification information of the fire detector that detected the fire;
The control device and are connected by a communication network, to identify the order from the exhaust port of the exhaust ventilation of fire detector which detects the fire from identification information and fire detection signal of the received fire detector, the fire detector There and having a both determines that fire occurs receiving apparatus determines the fire level when the sensed far sequentially from the exhaust port.
[0012]
The invention of claim 2 is a monitoring system for underground facilities for burying equipment,
A plurality of fire detectors installed in a communication passage to the inside of the underground facility for burying the equipment and provided with an exhaust ventilation system for detecting a fire;
Connected to multiple fire detectors, identifies the order of the fire detectors that detected the fire from the exhaust vent of the exhaust ventilation facility, and if the fire detector senses in order from the exhaust vent, a fire is detected. It determines both fire level when it is determined to have occurred, and a control unit for transmitting the determined fire level,
It has the receiving apparatus connected with the said control apparatus and a communication network, It is characterized by the above-mentioned.
[0013]
The invention of claim 3 is the monitoring system for underground facilities for equipment embedding according to claim 1 or 2 , further comprising an intrusion detector at the entrance / exit of the communication passage to the inside of the underground facilities for equipment embedding. And
[0015]
According to the first aspect of the present invention, when a plurality of fire detectors installed in an internal communication passage having an exhaust ventilation facility in an underground facility detect a fire, the exhaust of the detected fire detector is detected in a receiver. The order from the exhaust port of the ventilation equipment is identified, and when the fire detector senses in the order far from the exhaust port, it is determined that a fire has occurred and the fire level is determined .
[0017]
According to a second aspect of the present invention, a control device connected to a plurality of fire detectors identifies the order of fire detectors that have detected a fire from the exhaust port of the exhaust ventilation facility, and the fire detectors When it is sensed in order from the exhaust port, it is determined that a fire has occurred, and the fire level is determined, and the determined fire level is transmitted to the receiving device.
[0018]
Furthermore, in the invention of claim 3 , it is possible to constantly monitor unauthorized intrusion into the underground facility by providing an intrusion detector at the entrance / exit of the communication passage to the inside of the underground facility for burying equipment.
[0019]
DETAILED DESCRIPTION OF THE INVENTION
In the following, an embodiment of the underground facility monitoring system for embedding equipment of the present invention (hereinafter simply referred to as “underground facility monitoring system”) will be described with reference to the drawings.
[Example 1]
FIGS. 1 and 2 show an example in which the underground facility monitoring system of the present invention is applied to a cave that is a tunnel for laying power cables and communication cables.
[0020]
In the cave 100, a power cable and a communication cable (100a) are laid, and communication holes 101 and 102 with the ground are provided at intervals of about 300 meters. The communication hole 101 is provided with an exhaust ventilation equipment 1, and the communication hole 102 is provided with an intake ventilation equipment 2. Each of the ventilation facilities 1 and 2 includes a ventilation fan. The exhaust ventilation device 1 causes the air in the cave to flow out of the ground, and the intake ventilation device 2 allows the outside air to flow into the cave. As a result, fresh air is secured in the cave, and even if a heating element such as a high-voltage cable is present, the heat is released to the outside to prevent the inside from becoming hot.
[0021]
Here, in this embodiment, smoke detectors 11 and 12 as fire detectors are installed at appropriate positions in the communication hole 101. The smoke detector senses a specific gas, for example, CO or CO ₂ to sense smoke due to fire. In the present embodiment, the installation location of these smoke detectors is on a route through which air flows through the ventilation facility 1. In addition to the smoke detector, an intrusion detector 13 is installed in the vicinity of the ground entrance / exit of the communication passage 101 so that an intruder can be detected. Examples of the intrusion detector 13 include a magnet switch that detects the open / closed state of the door and a passive sensor that detects infrared rays emitted from the human body. Even things can be used.
[0022]
In the vicinity of the exit of the communication passage, a control device 20 is installed, and each sensor or detector 11, 12, 13 for monitoring installed in the sinus 100 is connected to this by a cable, and outputs of various sensors are obtained. Centralized management. These smoke detectors and intrusion detectors are each assigned an identification code (address). As will be described later, when an abnormality is detected, it is possible to grasp which detector has detected the abnormality. I have to.
[0023]
As shown in FIG. 2, a security switching device 30 is connected to the control device 20, and switching of the security state such as setting the monitoring system to a security state or a security release state for a predetermined area in the tunnel 100. I do. The control device 20 is also connected to a mobile phone or a mobile phone, for example, a PHS (Personal Handphone System) 40, and is monitored by a power company, a telecommunications carrier, or a security company via a PHS communication network 200. It fulfills the function of a relay device that communicates with each other.
[0024]
When the control device 20 receives the abnormality detection signal from the smoke detectors 11, 12 or the intrusion detector 13, the control device 20 transmits an alarm to the receiving device 50 of the monitoring center 300 via the PHS together with a unique identification code of the detected sensor. It has a function.
[0025]
FIG. 3 is a block diagram of the receiving device 50 installed in the monitoring center.
[0026]
The receiving device 50 includes an input unit 51, a control unit 52, a storage unit 53, and a display unit 54. The input unit 51 receives a signal transmitted from the PHS 40 via the line 200 and transmits the signal to the control unit 52. The control unit 52 receives the signal from the input unit 51 and based on the input information, as described later, the control unit 52 is in an abnormal state, for example, whether a fire has occurred, or there has been an intruder, or a fire has occurred. In such a case, the scale of the fire is determined, the reliability of the fire is determined, and the result is displayed on the display unit. The storage unit 53 stores the installation positions of the smoke detectors 11 and 12 and the intrusion detector 13 in the sinus 100 together with the respective identification codes (addresses). In the display unit 54, the control unit 52 receives an abnormality detection signal from various sensors, and displays the type of abnormality, its occurrence position, and the scale in the case of a fire on the display device.
[0027]
Next, the operation of the monitoring system for the underground facility for equipment will be described.
[0028]
For example, when some gas is ejected from the underground in the tunnel 100 and only one smoke detector, for example, the smoke detector 12 is activated, the smoke detector 12 sends a smoke (gas) detection signal to the control device 20. Based on the detection signal and the address of the smoke detector 12 that has output the detection signal, the control device 20 transmits the fire signal together with the address to the reception device 50 of the monitoring center 300 via the PHS 40.
[0029]
When the fire signal from the control device 20 is input to the input unit 51 of the receiving device 50, the control unit 52 detects where the smoke detector that has output the detection signal is installed, and how many smoke detectors it detects. It is determined whether a signal is output. If it is confirmed that there is one smoke detector that has output the detection signal, it is determined that the fire detection level is low, and the determination result indicating that the fire detection level is low is output to the display device 54 for notification. At the same time, the position of the smoke detector that outputs the detection signal is also displayed. As this display method, if the display device 54 is an image display device, for example, it is possible to display the characters “low fire detection level” or the like. Moreover, you may make it display the level by the light emission number and color using LED. Moreover, you may make it alert | report by an audio | voice and can also combine with an image display.
[0030]
In the above case, the staff of the monitoring center 300 can know that the fire level is low by the display on the display device 54, and can take countermeasures accordingly. For example, because the fire detection level is low, considering the possibility of false alarms, dispatch a person in charge to the ventilation equipment to check whether smoke is actually generated, and if smoke is not emitted, There is no need to take a sinus at risk and a decision can be made to observe further changes in condition.
[0031]
Next, when smoke is generated due to fire, since a large amount of smoke is generated, it is usually not possible to operate only one smoke detector, and the smoke detection signals are simultaneously generated by the two smoke detectors 11 and 12. Is output. In this case, the control device 20 outputs a fire signal to the receiving device 50 of the monitoring center 300 together with the addresses of the smoke detectors 11 and 12 that have detected smoke.
[0032]
The receiving device 50 determines that the fire detection level is high based on the two smoke detectors that output the smoke detection signal, and the address and fire detection level of the fire detector that issued the smoke detection signal are high. The fact is displayed on the display device 54 and notified. Thereby, the person in charge of the monitoring center 300 can rush to the corresponding ventilation facility, and in some cases, can determine that it is necessary to take an action such as entering the inside of the cave through the communication hole. And even if it takes danger and trouble to enter the ventilation facility, it is unlikely that the fire signal is a false alarm, and the work is rarely wasted. Even if multiple smoke detection signals are output from one smoke detector, there is a possibility that the smoke detector is malfunctioning, but when smoke detection signals are output from multiple smoke detectors, It is unlikely that multiple smoke detectors will malfunction at the same time, and the possibility of false alarms is low.
[0033]
In addition, if a fire actually occurs, prompt action such as extinguishing fire will prevent damage from spreading and facilitate early recovery. To that end, it is necessary to contact the parties concerned and related organizations at the same time that the fire is detected, and to cooperate in dealing with them. If it was done, those burdens will become very large. Therefore, when the notification that the fire level is low is given by the display of the display device 54 in the monitoring center 300, the situation is confirmed after confirming the situation at the site, and when the notification that the fire level is high is given. You can deal with this by immediately contacting the relevant parties and related organizations. As a result, wasteful handling due to false alarms can be minimized, while quick handling is possible when there is a high possibility of a fire.
[0034]
In the present embodiment, the smoke detectors 11 and 12 are provided at predetermined positions of the communication hole 101 to the inside of the cave, and should be placed in a better environment for the detector as compared with the hot and humid environment inside the cave. And malfunction of the sensor can be reduced.
[0035]
Further, the underground facility monitoring system according to the present embodiment is provided with an intrusion detection 20 near the entrance / exit of the communication hole 101, and if there is an intrusion into a ventilation facility of a person who has not been properly authorized, the intrusion detector 20 is provided. The intrusion detection signal is transmitted to the monitoring center 300 via the PHS 40 as in the case of fire detection. The control unit 52 of the receiving device 50 of the monitoring center 300 displays on the display device 54 that there has been an intruder along with the address of the intrusion detector that detected the intrusion.
[0036]
In the above-described embodiment, an example in which two smoke detectors are provided in the communication hole 101 in the sinus as the fire detector has been described. However, the present invention is not limited to this and can be implemented in other modes. For example, a heat sensor can be used as a fire sensor instead of a smoke sensor, or a combination thereof can be used. The installation location and number of fire detectors can be selected as appropriate according to the structure of the underground facility. For example, when a smoke detector and a heat detector are used together as a fire detector, when the smoke detector is activated, the heat detector installed in the vicinity does not show a detection output. Therefore, it can be determined that the cause of smoke (gas) is not a fire but a gas jet. As described above, the installation position of various sensors and the type, state, scale, etc. of abnormality when each sensor outputs a sensing signal are stored in advance in the storage unit 53 of the receiving device 50 of the monitoring center 300. It is possible to display and notify an accurate abnormal state based on the sensing signal of the sensor.
[Example 2]
Next, a second embodiment of the present invention will be described with reference to FIGS. In this embodiment, a plurality of smoke detectors are installed in the communication hole 101 in the embodiment shown in FIGS. Therefore, for convenience of explanation, the same components as those in FIGS. 1 and 2 are denoted by the same reference numerals. The functions of the control device 20 and the receiving device 50 of the monitoring center are basically the same as those shown in FIGS.
[0037]
The control unit 52 of the receiving device 50 has the same basic function as that of FIG. 3, but the control unit 52 of this embodiment receives each smoke detection signal from a plurality of smoke detectors. The order in which each smoke detector senses smoke is determined based on the address assigned to each smoke detector that emits along with the smoke detection signal.
[0038]
In this embodiment, smoke detectors 11, 12, and 14 are installed in the communication hole 101 in order from the side closer to the ventilation facility 1.
[0039]
A case where a fire occurs in such a sinus 100 is assumed. In this case, since the ventilation facility 1 is for exhaust and the ventilation facility 2 is for intake, smoke is discharged from the exhaust ventilation 1. In this case, the order in which the smoke detector detects smoke (gas) is the order of the smoke detectors 14, 12, and 11, and the order is recognized by the control unit 52 of the receiving device 50 of the monitoring center 300. The reliability of detection can be improved.
[0040]
In other words, if the smoke detector detects smoke in the above order, it can be determined that there is a high possibility that a fire has occurred, but in other cases, the smoke detector may have malfunctioned due to factors other than fire. Judgment is high.
[0041]
By displaying the order of smoke detectors that have detected smoke on the display unit 54 together with the address of the smoke detector, the monitoring center personnel who have seen the smoke detector have detected whether the smoke detector has malfunctioned or whether it has actually caused a fire. It can be judged without hesitation whether it is detected.
[0042]
Even in this case, it is possible to cope with the fire detection level by displaying the fire detection level based on the number of smoke detectors that have detected smoke, and the smoke detector is likely to malfunction. Even when installed in the environment, it is possible to minimize the wasteful response and to take a prompt response if the possibility of a fire is high.
[0043]
When determining the order in which the smoke detector detects smoke, it is possible to identify malfunctions of the smoke detector based on the order, so the smoke detector may be installed in the sinus 100 near the communication hole 101. Is possible. The smoke detectors in the tunnel 100 are likely to malfunction due to high temperature and humidity. However, the smoke detector malfunctions based on the number of smoke detectors and the order of detection. Since it is possible to identify whether or not, such an installation is also possible.
[0044]
This embodiment can also be widely applied to other underground facilities such as not only a cave but also a common groove, an information box, and a common wire groove. As in the above-described embodiment, the present invention can be applied to a case where a heat detector is used in addition to a smoke detector as a fire detector. Further, it is obvious that the number of fire detectors in the communication hole and the sinus is not limited to three and may be four or more.
[0045]
In any of the above embodiments, another communication means such as a mobile phone can be used instead of the PHS. Further, the control device may be provided with a fire signal to the monitoring center and provided with a notification means such as a sound or an image near the ventilation facility so as to notify the surrounding residents of the occurrence of fire or intrusion. Moreover, you may make it display the ventilation equipment nearest to the occurrence place of a fire on the display apparatus of a receiver.
[0046]
Furthermore, in the above-described embodiment, each sensor is identified by assigning an address to the sensor. However, it is not necessary to assign an address as long as the individual sensor can be identified. , Each sensor may be identified on the basis of which sensor connected to which contact senses.
[0047]
Furthermore, in the above-described embodiment, the case where the fire level determination is performed by the control unit 52 of the receiving device 50 has been described. However, the fire level determination is performed by the control device 20, and the determination result is transmitted to the monitoring center 300. You may do it.
[0048]
The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to such specific embodiments, and various modifications and changes can be made within the scope of the present invention described in the claims. It can be changed.
[0049]
【The invention's effect】
As is apparent from the above detailed description, according to the present invention, a plurality of fire detectors are used, and the fire level is determined by the number of detectors that have detected a fire, thereby providing highly reliable facility embedment. An underground facility monitoring system can be realized. At this time, it is possible to take the optimum response according to the situation based on the determined fire level, and if the fire level is high, the response can be started immediately, thereby preventing damage from spreading and early recovery It becomes.
[0050]
Here, when determining the fire level, it is possible to eliminate malfunction of the sensor because the number of the sensors that have detected the fire is used. When determining the fire level based on the number of detection signals output from the sensor, if one sensor malfunctions and outputs a detection signal many times, it may be determined that the fire level is high However, in the determination method according to the present invention, since only one sensor has detected a fire, it is determined that the fire level is low, so that malfunction can be eliminated.
[0051]
In addition, by recognizing the order of the detectors that detected the fire, when the smoke detector detects smoke, it can be identified whether it is due to a malfunction, and more reliable fire detection is possible. Become. In this case, it is also possible to detect a fire by installing the smoke detector in an environment where the smoke detector is liable to malfunction, such as in a hot and humid cave.
[0052]
Furthermore, when an alarm is transmitted to a remote monitoring center, a low-cost underground facility monitoring system for undergrounding equipment can be realized by using a PHS or a mobile phone.
[0053]
Moreover, by providing an intrusion detector at the entrance / exit of the communication hole to the inside of the underground burial for equipment burying, it is possible to constantly monitor the intrusion into the underground facility and prevent the facility from being obstructed.
[Brief description of the drawings]
FIG. 1 is a diagram for explaining a monitoring system for an underground facility for burying equipment according to an embodiment of the present invention.
FIG. 2 is a block configuration diagram of a monitoring system for an underground facility for burying equipment according to an embodiment.
FIG. 3 is a block configuration diagram of a receiving device.
FIG. 4 is a diagram for explaining a monitoring system for an underground facility for burying equipment according to another embodiment of the present invention.
FIG. 5 is a block diagram of a monitoring system for an underground facility for burying equipment according to another embodiment of the present invention.
[Explanation of symbols]
1, 2, Ventilation equipment 11, 12, 14, Smoke detector 13 Intrusion detector 20 Control device 30 Security switching device 40 PHS
DESCRIPTION OF SYMBOLS 50 Receiving device 51 Input part 52 Control part 53 Memory | storage part 54 Display part 100 Tunnel 101,102 Contact hole 200 Cell-phone communication network 300 Monitoring center

Claims (3)

A monitoring system for underground facilities for equipment burial,
A plurality of fire detectors installed in a communication passage to the inside of the underground facility for burying the equipment and provided with an exhaust ventilation system for detecting a fire;
A control device that is connected to a plurality of fire detectors and transmits a fire detection signal together with identification information of the fire detector that detected the fire;
The control device and are connected by a communication network, to identify the order from the exhaust port of the exhaust ventilation of fire detector which detects the fire from identification information and fire detection signal of the received fire detector, the fire detector There monitoring system equipment burying underground facilities; and a receiving apparatus determines both fire level determines that fire occurs when the sensed far sequentially from the exhaust port. A monitoring system for underground facilities for equipment burial,
A plurality of fire detectors installed in a communication passage to the inside of the underground facility for burying the equipment and provided with an exhaust ventilation system for detecting a fire;
Connected to multiple fire detectors, identifies the order of the fire detectors that detected the fire from the exhaust vent of the exhaust ventilation facility, and if the fire detector senses in order from the exhaust vent, a fire is detected. It determines both fire level when it is determined to have occurred, and a control unit for transmitting the determined fire level,
A monitoring system for an underground facility for burying equipment, comprising the control device and a receiving device connected by a communication network. The monitoring system for an underground facility for embedded equipment according to claim 1 or 2 , further comprising an intrusion detector at an entrance / exit of a communication passage to the inside of the underground facility for embedded equipment.

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