A Manhole Cover Monitoring Device with Optical Fiber Passive Sensing

A fiber optic sensor and ground sensing technology, which is applied in the direction of optical device exploration, etc., can solve problems such as uncontrollable manhole cover status, and achieve the effect of simple installation

Active Publication Date: 2016-03-23
NANJING HUAMAI TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved: the existing manhole cover cannot control the current state of the manhole cover without monitoring

Method used

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  • A Manhole Cover Monitoring Device with Optical Fiber Passive Sensing
  • A Manhole Cover Monitoring Device with Optical Fiber Passive Sensing
  • A Manhole Cover Monitoring Device with Optical Fiber Passive Sensing

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Embodiment Construction

[0019] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0020] The technical solution adopted in the present invention is: 1. Real-time monitoring is realized through optical fiber transmission and optical fiber sensor, and no power is needed in the whole process; The sensor is separated and contacted; 3. The movable shaft compression spring and the buffer shaft compression spring are double-buffered to prevent the optical fiber sensor from being damaged due to excessive impact force when the movable shaft moves downward. The manhole cover monitoring device with optical fiber passive sensing of the present invention includes a mounting seat 1-1, an adjusting bracket 1-2, and an optical travel switch 1-3. Such as figure 1 Shown is a schematic diagram of the external structure of the embodiment of the present invention. The overall dimensions are (L)223mmx(W)200mmx(H)280mm, and are made of...

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PUM

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Abstract

The invention discloses a passive fiber sensing manhole cover monitor which transmits monitoring signals through optical fiber and monitors a manhole cover by passive fiber sensing. The manhole cover is opened or closed to separate and join magnetic steel and a fiber sensor in an optical limit switch, so that return light of the optical fiber sensor is controlled, and the state of the manhole cover is monitored.

Description

technical field [0001] The invention relates to a manhole cover monitoring device with optical fiber passive sensing, which is used for monitoring the state of the manhole cover, and belongs to the field of communication network equipment technology and mechanical structure. Background technique [0002] With the rapid development of the times, urban construction needs to be beautified, and communication cables can only pass through underground pipes, so it is unavoidable to use wells to transfer and maintain the normal communication of cables. In the case of monitoring and restriction, it may happen that the construction personnel forget to cover the manhole cover and the manhole cover is maliciously stolen by criminals, causing people or objects to fall into the well, resulting in personal safety accidents and property losses. Contents of the invention [0003] According to the situation that the existing wells do not have monitoring, the present invention provides a man...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01V8/10
Inventor 吴体荣黑昱冬王娜张少飞朱孟达
Owner NANJING HUAMAI TECH
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