JP4616964B2 - Vandalism monitoring system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a monitoring system capable of grasping a destructive action on a facility in real time even when the facility to be monitored is in a remote place.
[0002]
[Problems to be solved by the invention]
In advanced economic societies, the damage caused by vandalism on vital infrastructure such as electricity, communications, gas, water, and railways is enormous. In the period of socio-economic changes like nowadays, there is a risk that destructive acts that cannot be considered by conventional common sense may occur, and crisis management is an important issue. In particular, vandalism such as the collapse of power transmission towers of electric power companies has occurred as a real problem, and effective measures that can quickly cope with such crimes are urgently needed.
[0003]
Here, it is conceivable that the mounting bolts to the ground foundation angle and the bolts / nuts of other connecting parts are covered with appropriate protective members, but even when the steel tower is in the mountains, even the protective members are destroyed. There is a strong fear that it will be done, and it is not enough as a countermeasure.
[0004]
The present invention has been made in view of such a point, and even if it is a destructive act on equipment in a remote place such as a power transmission or communication tower, it is immediately detected and quickly detected. The purpose is to provide a monitoring system that can take appropriate measures.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, the present invention divides a large number of facilities to be monitored into a plurality of groups based on geographical conditions, and is generated in the group through a relay device provided for each group. A monitoring system for notifying a monitoring center of an abnormal situation, wherein each of the plurality of monitoring target facilities belonging to each group is provided with a terminal device, and the terminal device has a destructive action on the facility based on a sensor output A detecting unit for detecting the occurrence of a radio wave and a wireless unit for realizing wireless transmission / reception between adjacent monitoring target facilities, while the terminal device receives monitoring information from an upstream terminal device, The monitoring information is added to the monitoring information, and the monitoring information is transmitted to the terminal device on the downstream side.
[0006]
In the terminal device of the present invention, it is preferable to specify the address and transmit the monitoring information to the downstream side. Further, in a more preferable terminal device, when monitoring information to be received by itself is not transmitted even after a predetermined time has elapsed, only the monitoring information of its own monitored equipment is transmitted to the downstream terminal device. I have to.
[0007]
Further, in the terminal device of the present invention, when the reception confirmation signal is not returned from the terminal device even though the monitoring information is transmitted to the downstream terminal device, the terminal device is directed to another downstream terminal device. Monitoring information.
[0008]
Furthermore, in the preferred relay device of the present invention, only when the abnormality occurs in the group in charge, the content is reported to the monitoring center, while the monitoring center is always in operation of the relay device as necessary. To make sure.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be described in more detail based on examples.
FIG. 1 schematically shows the overall structure of a steel tower monitoring system SY. In this system SY, the towers to be monitored are managed by being divided into N groups G _{1 to} G _n , and an abnormal situation occurring in the group is determined as a relay device C _{1 to} C _n provided for each group. To the monitoring center M. The towers to be monitored are grouped on the basis of geographical conditions that allow wireless communication between adjacent towers, and usually one group is formed by about 10 towers 1 ₁ ... 1 ₁₀ . .
[0010]
As shown in FIG. 2, the position of the tower 1 ₁ ... 1 _10, and the terminal device 2 ₁ ... 2 ₁₀ respectively attached. As shown in FIG. 3, each terminal device 2 is a signal transmission terminal radio that transmits and receives wireless information between vibration sensors 3 a and 3 b made of piezoelectric elements that detect destructive vibration generated in the tower 1 and adjacent towers. The destructive action for the tower is based on the signals from the machine 4, the storage battery 5 that supplies DC power to each part of the device, the solar generator 6 that generates power by sunlight and charges the storage battery 5, and the vibration sensors 3a and 3b. It comprises a sensor controller 7 for determining.
[0011]
The signal transmission terminal radio (hereinafter referred to as terminal radio 4) is a low-power radio of a specific frequency band that does not require a radio license. The terminal wireless device 4 is connected to an antenna and actually transmits / receives radio waves, and extracts only the monitoring information addressed to itself from the received signal. The data control unit 9 for reconstructing the monitoring information by adding the data, and the stabilized power supply unit 10 are configured. The reconstructed monitoring information is given a new address, and the monitoring information is re-radiated through the wireless transmission / reception unit 8 toward the downstream tower identified by the address.
[0012]
The system SY can be, for example, by ten towers 1 ₁ ... 1 ₁₀ of one but groups are formed, by the terminal device 2 ₁ ... 2 ₁₀ provided in each tower, from the upstream side of the tower of the downstream A wireless communication path for serial monitoring information directed to the steel tower is formed (see FIG. 2). The terminal device 2 ₁₀ of the most downstream tower, to the relay apparatus Ci attached to telephone poles, and transmits all the monitoring information in the group.
[0013]
The serial wireless communication path in the group will be specifically described. The distance between the terminal devices is set within a viewing distance of 700 m. In other words, it is necessary that there is no obstacle such as a mountain or a building between the terminal devices, and there is a large building on the way, and the condition of the line-of-sight distance of 700 m is not satisfied, or When there is a strong noise source, a relay terminal is installed in the right place.
[0014]
In any case, this system SY performs sequential transmission as shown in FIG. 2 from the upstream terminal device 2 _j toward the terminal device 2 _{j + 1} of the adjacent downstream steel tower in the normal state. If sequential transmission is not possible due to trouble, start transmission or interlace transmission is performed.
[0015]
[Sequential transmission]
To describe sequentially sent for the terminal device 2 ₁ located most upstream, at predetermined time intervals, whether the monitoring information sabotage in tower 1 ₁ is generated, the terminal apparatus 2 ₂ adjacent tower 1 ₂ In contrast, it is sent with an address. Therefore, the terminal device receiving the monitoring information, even if there are a plurality, only the terminal device 2 ₂ which is the original destination to obtain monitoring information from the terminal device 2 _1. Then, the terminal apparatus 2 _2, obtained monitoring information addressed to, after confirming the reliability of the communication data, such as by parity check or CRC checking, the terminal device 2 _1, acknowledgment with the address (Acknowledge) Reply signal.
[0016]
Upon receipt of the acknowledgment signal, the terminal device 2 _1, you are possible to recognize that the monitoring information itself was correctly transmitted. If there is a retransmission request from the terminal device _2-2 , for example, part of the communication data is damaged, the monitoring information is transmitted again in response to the request.
[0017]
In the present embodiment, the specific content of the monitoring information is not particularly limited, but it is expressed by simple ON / OFF destruction data (0 and 1) or stepwise destruction levels (for example, numbers from 0 to 3). Yes. When adopting the destruction level, the destruction level 0 clearly means no abnormality, and the destruction level 3 means the existence of obvious destruction activity. As described above, in this embodiment, the monitoring information is configured only by simple numerical data, address data, parity bits, and the like, thereby realizing simplicity and reliability of communication.
[0018]
Incidentally, the terminal device 2 ₂ downstream adjacent receives correctly monitoring information from the terminal device 2 _1, with returns a reception confirmation signal to the terminal device 2 _1, the subversive data information received, managed self by adding subversive data information about the tower 1 ₂ toward the tower 1 ₃ of the terminal device 2 ₃ downstream adjacent to transmit the monitoring information. Then, it is confirmed that the have been made successfully communicate by receiving an acknowledgment (Acknowledge) signal from the terminal device 2 _3.
[0019]
The same applies hereinafter, and the j-th terminal device 2 _j adds the destruction data information about the tower 1 _j under its control to the received destruction data information of the 1st to _j −1th towers. 2 Send monitoring information to _{j + 1} . Since such operation is repeated, the tower 1 ₁₀ located downstream, will receive the monitoring information pylon to 1-9 th. Therefore, the terminal device 2 ₁₀ located on the most downstream side adds the destruction data information of the _tenth tower 1 ₁₀ to the received monitoring information and transmits the information to the relay device Ci.
[0020]
[In case of communication trouble]
On the other hand, when the communication path is interrupted due to some trouble, start transmission (FIG. 4) or interlace transmission (FIG. 5) is performed. That is, since the monitoring information is transmitted at regular time intervals, the j-th tower receives new monitoring information after the previous monitoring information is received from the (j−1) -th tower, even if a predetermined time elapses. Is not received, it can be understood that some trouble has occurred in the _j-1st tower 1 _j-1 .
[0021]
Therefore, the j-th terminal device 2 _j transmits only the monitoring information in the tower 1 _j under its management to the j + 1-th terminal device 2 _{j + 1} . In this way, since the monitoring information is sent to the relay device Ci while adding destruction data information one after another, the relay device Ci lacks the first to j−1th monitoring information. It can be recognized that an abnormality has occurred in the terminal device 2 _j-1 of the -1st steel tower.
[0022]
Further, for example, in the terminal device 2 _{k of} the k-th tower 1 _k , the monitoring information from 1 to _k is transmitted to the (k + 1) -th tower 1 _{k + 1} , but the (k + 1) -th terminal device 2 _{k + 1.} Suppose the reception confirmation signal cannot be received from. In such a case, by repeating the transmission process several times, after confirming the abnormality of the (k + 1) th terminal device 2 _{k + 1} , _{1 to} the adjacent k + 2 second tower 1 _{k + 2} Send up to k monitoring information.
[0023]
Since the terminal device 2 _{k +} 2 of the _{k +} 2th tower can recognize that the information is from the kth tower based on the received information, the reception confirmation information is returned to the _kth tower 1k, and the k + 3th Send monitoring information to the tower 1 _{k + 3} . Since the k + 1-th data is missing in the monitoring information sent to the relay device Ci in this way, the relay device Ci can recognize the abnormality of the k + 1-th terminal device.
[0024]
As described above, the terminal device 2 ₁₀ of the most downstream tower is transmitting the monitoring information in the group to the relay apparatus Ci, the relay apparatus Ci, terminal radio for receiving monitoring information 4, a PHS (Personal Handyphone System) unit 11 for notifying the monitoring center M of an abnormal situation in the group and a relay control unit 12 for controlling each unit of the device are provided (see FIG. 6). The relay device Ci uses a commercial AC voltage 100V as a power source.
[0025]
Relay control unit 12 of the relay apparatus Ci, for monitoring information received from the terminal apparatus 2 ₁₀ (monitoring information 10 pieces of steel towers), sequentially, and stored in the storage device identifies the time. When the occurrence of an abnormality is recognized by examining the received monitoring information, the contents are transmitted to the monitoring center M. Specifically, the monitoring information in its own group is examined, and if there is a steel tower indicating destruction data “abnormal”, the steel tower number and the destruction data are transmitted to the monitoring center M. Further, when the fact of a start transmission on the way or an inter-transmission transmission is recognized, the tower number that is considered to have a trouble is transmitted to the monitoring center M together with the trouble contents.
[0026]
On the other hand, the monitoring center M is composed of a PHS unit 13 for communicating with the relay device Ci and a control personal computer 14. The control personal computer displays the abnormality information received by the PHS unit 13 on the monitor screen. I am doing so. In addition, the monitoring center M makes a request for periodic notification, time correction, operation log, sensor information, and the like to the relay device Ci as necessary.
[0027]
The periodic notification request is an operation for periodically calling the relay device Ci and confirming that the relay device is operating normally. The time correction request is a process for correcting a time lag in the relay device, and the monitoring center and the clock of the relay device are regularly matched. The operation log request is an operation for requesting transmission of reception records (monitoring information) within a certain period accumulated in the relay device.
[0028]
The request for sensor information is a request for transmitting all monitoring information to the monitoring center regardless of whether an abnormal situation has occurred in the group. Therefore, after receiving this request, the relay device continues to send the received monitoring information as it is to the monitoring center until a new request cancellation command is issued. Because it has such an operation mode of sensor information request, for example, when the occurrence of a situation that may be destructive activity in a certain tower has been notified from the relay device, the monitoring center, the situation of the entire group, The situation of other groups can be examined continuously. Appropriate measures can be taken quickly, and necessary staff can be dispatched to necessary places.
[0029]
FIG. 7 illustrates an example of monitoring information transmitted from the tenth terminal device to the relay device Ci. The monitoring information, excluding the parity bit, is a start code (1 byte), a message type code (1 byte), a communication destination ID (6 bytes), a local station ID (6 bytes), and data (7 bytes × 10). , And end code (1 byte). The data of 7 bytes × 10 transmitted to the relay device Ci includes the terminal IDs (6 bytes) of the _first to _tenth terminal devices 2 ₁ to 2 ₁₀ and 1 byte indicating abnormality information in each terminal. Consists of.
[0030]
Each time data of 7 bytes × 10 is transmitted from the upstream side to the downstream side terminal device, the number of data sequentially increases. For example, the second terminal device 2 ₂ to the third terminal device 2 ₃ the monitoring information sent to, since those containing the first and second terminal information, the third terminal apparatus 2 _3, writes one byte indicating its own abnormality information, the communication destination ID The local station ID is rewritten and transmitted to the _fourth terminal device 24. Thereafter, since the same operation is performed, 7 bytes × 10 data are all meaningful data in the monitoring information transmitted from the tenth terminal device to the relay device. When the call is transmitted halfway or jumped, the ID of the corresponding terminal device is missing, so the relay device can know the occurrence of an abnormal situation.
[0031]
【The invention's effect】
As described above, according to the present invention, even if it is a destructive action for equipment located in a remote place, this can be immediately detected and appropriate action can be taken promptly.
[Brief description of the drawings]
FIG. 1 illustrates a schematic configuration of a monitoring system according to an embodiment.
FIG. 2 is a diagram illustrating a route of wireless communication.
FIG. 3 illustrates a configuration of a terminal device.
FIG. 4 is a diagram illustrating mid-start transmission.
FIG. 5 is a diagram for explaining interlaced transmission;
FIG. 6 is a configuration diagram of a relay device.
FIG. 7 illustrates an example of monitoring information.
[Explanation of symbols]
1 Steel tower (monitored equipment)
SY monitoring system,
2 Terminal device 3 Sensor 7 Sensor controller 4 Signal transmission terminal radio

Claims (2)

This is a monitoring system that divides a large number of equipment to be monitored into a plurality of groups based on geographical conditions, and notifies the monitoring center of abnormal situations that have occurred in the group through a relay device provided for each group. And
Each of the plurality of monitoring target facilities belonging to each group is provided with a terminal device, and the terminal device includes a detection unit that detects occurrence of a destructive action on the facility based on a sensor output, and an adjacent monitoring target facility And a wireless unit that realizes wireless transmission and reception with
A serial communication information wireless communication path is formed by the terminal device group provided in each monitoring target facility belonging to one group of the plurality of groups, and the terminal device group belonging to the one group Among them, the first terminal device is the most upstream, the last terminal device is the most downstream,
Send monitoring information from the first terminal device that is the most upstream to the next terminal device that is downstream at regular intervals,
Upon receiving the monitoring information, the terminal device adds its own monitoring result to the monitoring information, and sequentially transmits the monitoring information to the next terminal device on the downstream side, and also to the upstream previous terminal device. Send back an acknowledgment signal to
If any terminal device belonging to the one group transmits monitoring information to the next terminal device on the downstream side, the reception confirmation signal is not returned from the terminal device. Send monitoring information to the next terminal device on the side,
If any of the terminal devices belonging to the one group does not receive the monitoring information to be received from the previous terminal device even after a predetermined time has elapsed, only the monitoring information of its own monitored equipment is transferred to the downstream side. To the second terminal,
The terminal device of the last number transmits all the monitoring information in the one group to one relay device provided in the one group.
Monitoring system vandalism, characterized in that.   The relay device reports the contents to the monitoring center only when an abnormality occurs in the group that it is in charge of, while the monitoring center checks the operating status of the relay device at any time as necessary. The monitoring system according to claim 1.

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