JP2000132752A - Detecting device for destructive act - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a detecting device which immediately detects even a destructive act to a facility existing at a remote place and quickly takes appropriate action. SOLUTION: This device comprises a detection box 2 which detects the occurrence of a destructive act based on an output of a vibration sensor 1 attached to the right place of a steel tower TW and a transferring part 3 which receives a signal from the detection box 2 and transfers the received contents to a telephone line. The detection box 2 detects the destructive act, based on fuzzy inference with a solar cell as a DC power source.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a detection device capable of grasping in real time the destruction of a monitored facility even when the facility to be monitored is located at a remote place.

[0002]

In a high-economic society, the damage caused by vandalism to basic facilities such as power, communication, gas, water, and railways is enormous. In the current socio-economic fluctuation period, there is a risk of vandalism that cannot be considered with conventional common sense, and crisis management has become an important issue. In particular, a destruction that causes a power transmission tower of a power company to collapse has occurred as a real problem, and effective measures for promptly dealing with such crimes are urgently needed. Here, it is conceivable that the bolts and nuts of the connection to the ground foundation angle and other connection parts may be covered by appropriate protection members. However, if the steel tower is located deep in the mountains, even the protection members are destroyed. There is a strong possibility that they will be used, and it is not enough as a countermeasure. The present invention has been made in view of such a point, and even if it is a vandalism against equipment in a remote place, such as a power transmission or communication tower, it is immediately detected, and promptly detected. It is an object of the present invention to provide a detection device capable of taking appropriate measures.

[0003]

In order to achieve the above object, a vandalism detecting device according to claim 1 performs a vandalism on a facility to be monitored based on an output of a vibration sensor attached to the facility. A detection unit that detects the occurrence of the above, wirelessly transmits the detection result, and a transfer unit that receives a signal from the detection unit and transfers the received content to a general telephone line, a wireless telephone line, or a dedicated telephone line. The detection unit detects vandalism based on fuzzy inference using a solar cell as a DC power supply.

In the present invention, since a vibration sensor for detecting an impact applied to equipment to be monitored based on acceleration is used, vandalism can be directly detected.
TV camera, infrared beam sensor, microwave sensor,
Compared to a current collecting sensor or the like, it has the advantage that it is not affected by flying objects or natural phenomena (rain, snow, etc.) and is not easily affected by dust or dirt. The vibration sensor is not particularly limited as long as it can detect acceleration. For example, a vibration sensor having a two-layer piezoelectric ceramic structure and capable of detecting acceleration based on a piezoelectric effect is preferable. Further, in the present invention, the detection unit and the transfer unit are connected by a wireless communication line, and furthermore, since the detection unit operates using a solar cell as a DC power supply, the detection unit is located in a remote place. Even if it can be attached freely. Note that the transfer unit may receive signals from a plurality of detection units. In this case, it is preferable to arrange the transfer unit at a position substantially equidistant from the plurality of detection units.

Furthermore, since the detecting section of the present invention detects vandalism based on fuzzy inference, it is possible to effectively use the empirical rules for vandalism. For example, in the case of a tower break, the legs of the tower may be damaged or cut by an electric drill or the like. Also,
If the mounting bolt to the ground foundation angle is loosened or the mounting bolt is covered with a protective member, it may be broken by hitting with a metal hammer or the like. Considering such vandalism, the hammer impact A and the drill vibration B are generally located in the range of A and B in FIG. 6, and the mere impact C is located in the range of C in FIG. FIG.
Fig. 2 schematically illustrates the tendency of each vandalism using the acceleration obtained from the vibration sensor and the vibration frequency as parameters.

More specifically, the hammer impact A and the drill vibration B are characterized by the duration of the vibration and the vibration frequency. When the steel tower is hit with a metal hammer (case A), the vibration sensor Is high in frequency regardless of the magnitude of its maximum amplitude, but the vibration is shocking and its duration is short. On the other hand, if you try to cut the tower with a tool such as a drill or grinder (Case B)
The output from the vibration sensor naturally has a duration of case A
, But the maximum amplitude of the vibration is smaller than in case A. Compared to these vandalisms, when a tree falls on a tower due to a typhoon or when a person kicks the tower with a foot (Case C), the output from the vibration sensor has a smaller maximum amplitude. , The frequency is low and its duration is short. Therefore, Case A and Case C are roughly
Case B and case C can be generally distinguished by the difference in the duration of the signal obtained from the vibration sensor.

Therefore, with respect to the signal obtained from the vibration sensor, the fuzzy inference can be performed by using the duration of the vibration, the maximum amplitude of the vibration, and the vibration frequency as basic parameters and adding other parameters as necessary. , It is possible to reliably detect whether or not a vandalism has occurred. The equipment to be monitored in the present invention is located in a place where ordinary people hardly come into contact, such as a power transmission tower, and its destruction requires a considerable impact and time. The result is very reliable. That is, the present invention is also characterized in that vandalism can be reliably detected with relatively simple logic. In addition, it is preferable that a plurality of vibration sensors are arranged on each monitoring target, and in this case, it is preferable to make a comprehensive determination based on information from each vibration sensor.

[0008] Further, a vandalism detection device according to claim 2 receives a signal from a series of detection units serially connected by a wireless communication line and a signal from a detection unit at the last stage, and receives the received content. A general telephone line, a wireless telephone line, or a transfer unit for transferring a dedicated telephone line, the detection unit,
Based on the output of the vibration sensor attached to the equipment to be monitored, it detects the occurrence of destructive activity on the equipment, detects the signal transmitted from the detection unit at the previous stage, and detects the detection result at the next stage. The detection unit detects a destructive activity based on fuzzy inference using a solar cell as a DC power supply. Taking power towers as an example, these towers are typically 300-400 m
However, in the invention according to claim 2,
The plurality of facilities are connected in series by a wireless communication line. Therefore, according to the present invention, a plurality of facilities in a certain area can be monitored collectively.

For example, when n towers are monitored, if a vandalism is detected in the i-th tower, i
The detection unit identifies its own number i and outputs the detection result to i
Wireless transmission is performed to the (+1) th detection unit. And i +
The first detection unit receives the signal and wirelessly transmits the signal as it is to the (i + 2) th detection unit. Hereinafter, through the same procedure, the n-th detection unit wirelessly transmits the received i-th destruction information to the transfer unit. Further, in addition to such a sequential transfer operation, if a vandalism is detected by another j-th detection unit, this destruction information is also sequentially transferred and transmitted to the transfer unit. The transfer unit converts the received destruction information into an audio signal and transfers it to a general telephone line, a wireless telephone line, or a dedicated telephone line, so that n towers can be monitored in one place in real time, and immediately ,
Appropriate measures can be taken.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in more detail based on embodiments. FIG. 1 illustrates a schematic configuration of a vandalism detection device EQU1 according to the first embodiment. The detection device EQU1 includes a plurality of vibration sensors 1 attached to a power tower TW, a detection box 2 for receiving signals from the respective vibration sensors 1, and a transfer box 3 for receiving a wireless signal from the detection box 2.
It is composed of The vibration sensor 1 has a piezoelectric ceramic two-layer structure and can detect acceleration based on a piezoelectric effect. And this vibration sensor 1 is installed in the lower end of the leg of the tower TW in a place where it is difficult for a criminal to detect.

[0011] As shown in FIG.
A solar cell 4 is installed on the upper surface of the box, a nicd battery 5 as an auxiliary for the solar cell 4, a detector 6 including a microcomputer and detecting vandalism by fuzzy inference, inside the detection box 2, A transmitter 7 for wirelessly transmitting the determination output of the detector 6 is provided. Note that the detection box 2 is attached to a place where the criminal cannot touch and cannot touch. The detector 6 installed in the detection box 2 is always operating by the DC power supply of the solar cell 4 and the NiCd battery 5, and constantly monitors the output of the vibration sensor 1. Then, when a significant output of a predetermined level or more is obtained from the vibration sensor 1, it is determined by fuzzy inference whether the output is due to a destruction by a hammer strike, an electric drill, or another simple impact. are doing. If the detector 6 determines that vandalism has occurred, the
And the transmitter 7 wirelessly transmits the destruction information to the transfer box 3. Note that the wiring between the vibration sensor 1 and the detector 6 may be cut by a criminal,
Even when the output from the vibration sensor 1 cannot be obtained at all, the destruction information is immediately transmitted to the transfer box 3.

As shown in FIG. 2B, the transfer box 3
Is provided with a receiver 8 corresponding to the transmitter 7 of the detection box 2. The receiver 8 converts the received destruction information into a signal that can be transmitted through a telephone line, and converts this into a signal that can be transmitted through a general telephone line. Transfers to the company's leased line. Note that, depending on the installation position of the transfer box 3, a wired line may not be connected. In such a case, a PHS line is used. In any case, the destruction information is transmitted to the monitoring headquarters in real time via the telephone line, so that the monitoring headquarters can immediately take appropriate measures.

FIG. 3 shows a schematic configuration of a vandalism detection device EQU2 according to a second embodiment. The basic configuration is the same as the first embodiment, in the detecting device EQU2, towers ... TW _i-1 for power being spaced at _{300~400m, TW i, TW i +} 1 ...
Are connected in series by a wireless communication line, and these are collectively monitored. Therefore, the tower TW
_{The i-th} detection box 2A _i is provided with a receiver 9 for receiving the destruction information transmitted from the detection box 2A _i-1 attached to the tower TW _i-1 in the preceding stage. Then, the transmitter 7 of the tower TW _i, while transmitting the i-th fracture information corresponding to the output from the detector 6 toward the downstream of the tower TW i _{+ 1,} the breakdown information receiver 9 receives Also,
It is transmitted as it is to the subsequent tower TWi _{+ 1} .

[0014] In this way, the detection box 2A ₁ to 2A region _n of n towers are connected in series to the wireless communication line, the tower TW _n of the final stage detection box 2A
_n is transmitting destruction information to the transfer unit 3. Second
Also in the embodiment, the operation of the transfer unit 3 is the same as that of the first embodiment, and the receiver 8 provided in the transfer unit 3 converts the received destruction information into a signal that can be transmitted through a telephone line, This is transferred to a general telephone line or a dedicated line of the company. If necessary, a wireless telephone line such as a PHS line is used.

FIG. 5 shows a protective member 10 which is a member suitable for use in carrying out the first embodiment and the second embodiment, and which protects the connecting portion JN of the structural members P1 and P2 of the steel tower.
In this example, the connecting portion JN is composed of the flanges F1 and F2 and the bolts B and the nuts N for fixing the flanges F1 and F2, but the protective device 10 covers the entirety thereof. Protective equipment 1
0 is composed of two members 10a and 10b having the same shape,
The pin member 11 is connected to connect the two members 10a and 10b.
Are fixedly and tightly fitted. Therefore, in order for the criminal to loosen the bolt B and the nut N, the pin member 11 is required.
It is necessary to pull out the pin member 1 for that purpose.
When a blow is applied to the device 1, a considerable blow is also applied to the protective device 10. Since the impact applied to the protective equipment 10 is naturally transmitted to the tower, the above-described vandalism can be immediately detected by a vibration sensor disposed at an appropriate position on the tower. In addition, in response to the impact on the pin member 11, a unique vibration is generated from the pin member 11 based on its material and shape. If fuzzy inference is performed in consideration of this, the determination accuracy is further improved.

[0016]

As described above, according to the present invention,
Even the destruction of equipment in a remote location can be detected immediately and appropriate actions can be taken promptly.

[Brief description of the drawings]

FIG. 1 shows a vandalism detection device EKU1 according to a first embodiment.
1 schematically shows the configuration of the first embodiment.

FIG. 2 illustrates an internal configuration of a detection box and a transfer box.

FIG. 3 shows a vandalism detection device EQU2 according to a second embodiment.
1 schematically shows the configuration of the first embodiment.

FIG. 4 illustrates an internal configuration of a detection box.

FIG. 5 illustrates a protective device suitable for use in practicing the present invention.

FIG. 6 is a diagram illustrating characteristics of vandalism.

[Explanation of symbols]

 EQU Vandalism detection device TW tower (monitoring target equipment) 1 vibration sensor 2 detection box (detection unit) 3 transfer unit

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 5C084 AA03 AA10 BB40 CC06 DD79 FF02 FF03 GG04 GG65 GG80 5C087 AA02 AA03 BB20 DD03 DD08 DD15 DD49 EE07 EE18 EE20 FF01 FF02 FF04 GG14 GG66 GG70 GG90

Claims (4)

[Claims] A detecting unit that detects occurrence of a vandalism for the facility based on an output of a vibration sensor attached to the facility to be monitored, and wirelessly transmits a result of the detection, and outputs a signal from the detecting unit. And a transfer unit for transferring the received content to a general telephone line, a wireless telephone line, or a dedicated telephone line.The detection unit detects a vandalism based on fuzzy inference using a solar cell as a DC power supply. A vandalism detection device characterized by the following: 2. A signal from a series of detectors connected in series by a wireless communication line and a signal from a detector at the last stage is received, and the received content is received by a general telephone line, a wireless telephone line,
Or a transfer unit for transferring to a dedicated telephone line.The detection unit detects the occurrence of vandalism for the facility based on the output of the vibration sensor attached to the facility to be monitored, and from the detection unit at the preceding stage. Detects the transmitted signal and transmits any of the detection results to the next detection unit, and the detection unit detects the vandalism based on fuzzy inference using the solar cell as a DC power supply. A vandal detection device characterized by the following. 3. The destruction according to claim 1, wherein the detecting unit performs fuzzy inference on at least the strength, frequency, and duration of the significant impact detected by the vibration sensor as input parameters. Action detection device. 4. The detection unit is installed in response to a destruction of a power or communication tower, and the vibration sensor is
2. A plurality of towers are attached to a lower end of the tower.
A vandalism detection device according to any one of claims 3 to 3.