Passive optical fiber bus type electric power manhole cover displacement monitoring system and monitoring method thereof

A passive optical fiber and displacement monitoring technology, which is applied in the electric power field, can solve problems such as prone to errors and affect wireless signal transmission, and achieve the effects of saving municipal costs, reducing the difficulty of supervision, and reducing the risk of theft

Inactive Publication Date: 2015-07-15
SHANGHAI MUNICIPAL ELECTRIC POWER CO +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the anti-theft of the manhole cover mostly adopts the wireless method to send the alarm signal. Since the manhole cover is mostly made of metal material, the above method will affect the transmission of the wireless signal and is prone to errors.

Method used

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  • Passive optical fiber bus type electric power manhole cover displacement monitoring system and monitoring method thereof
  • Passive optical fiber bus type electric power manhole cover displacement monitoring system and monitoring method thereof
  • Passive optical fiber bus type electric power manhole cover displacement monitoring system and monitoring method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0034] The displacement monitoring device is used in power wells where the diameter of the shaft 400 is greater than the diameter of the base of the well cover 200, such as figure 2 shown.

[0035] At this time, the fixed unit includes two fixed legs 1051, the fixed legs 1051 are U-shaped, and the openings of the fixed legs 1051 are clamped on the well cover base 200, and a support component 1052 is used to prevent the displacement monitoring device from deflecting. The supporting component 1052 is triangular in shape, connected to the housing 101 and arranged under the well cover base 200 .

[0036] Preferably, the monitoring unit 102 is a travel switch, which is used to monitor the displacement state of the electric manhole cover, such as figure 2 As shown, when the travel switch is installed, the upper surface of the travel switch is higher than the base plane of the manhole cover. When the manhole cover is placed on the manhole cover base, the travel switch will be pres...

Embodiment 2

[0040] The displacement monitoring device is applied in an electric well whose diameter of the shaft 400 is smaller than or equal to the diameter of the well cover base 200 .

[0041] At this time, the displacement monitoring device can be directly fixed on the wellbore 400 by screws, which is well known to those skilled in the art.

[0042] Such as image 3 As shown, a passive optical fiber bus type electric manhole cover displacement monitoring method comprises the following steps:

[0043] S1. Monitor the displacement state of the electric manhole cover;

[0044] S2. If the electric manhole cover is displaced, an alarm signal is triggered to be generated;

[0045] S3. Sending the alarm signal to the monitoring center.

[0046] Specifically, the monitoring unit 102 in this embodiment is a travel switch. Under normal circumstances, the well cover is closed, and the monitoring unit 102 in each power well is in a pressurized state. When one or more well covers are moved, suc...

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PUM

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Abstract

The invention discloses a passive optical fiber bus type electric power manhole cover displacement monitoring system which comprises multiple monitoring devices and a monitoring center, wherein the monitoring devices are installed on corresponding manhole cover bases respectively and used for monitoring the displacement state of an electric power manhole cover, when the electric power manhole cover moves, alarm signals are generated by triggering, the monitoring center is connected with the multiple monitoring devices and used for receiving the alarm signals sent by the monitoring devices; the monitoring devices are connected with one another by adopting an optical fiber bus mode. The invention further discloses a passive optical fiber bus type electric power manhole cover displacement monitoring method. According to the passive optical fiber bus type electric power manhole cover displacement monitoring system and the monitoring method thereof, the alarm signals can be sent out when the displacement of the electric power manhole cover occurs, the risk that the manhole cover is stolen is reduced, and cables in a well are prevented from being stolen.

Description

technical field [0001] The invention relates to the field of electric power, in particular to a passive optical fiber bus type electric manhole cover displacement monitoring system and a monitoring method thereof. Background technique [0002] With the acceleration of urbanization and the expansion of urban areas, the construction of municipal public facilities has developed rapidly. Most of the electric (wire) cables in departments such as electric power and communication are buried underground, and routine maintenance is carried out through manhole covers, which also provides opportunities for criminals. Due to the wide distribution and large number of manhole covers, it is difficult to supervise, and the crime of stealing manhole covers directly or stealing electric (wire) cables through the entrance of manhole covers is becoming more and more rampant. These acts of theft have seriously affected the normal function of municipal facilities and caused huge direct and indir...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08B13/02
CPCE02D29/1481
Inventor 吴海生陈坚黄晓明谢方
Owner SHANGHAI MUNICIPAL ELECTRIC POWER CO
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