Vibration monitoring system and method

A technology of monitoring system and shock sensor, which is applied in the direction of instruments, measuring devices, using wave/particle radiation, etc., can solve problems affecting communication services, connection boxes falling off, swinging, etc.

Pending Publication Date: 2020-12-01
JIANGSU ELECTRIC POWER CO +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the impact of harsh environments such as high temperature, heavy rain, strong wind, and icing, the splice box will fall off, swing and other abnormal conditions...

Method used

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  • Vibration monitoring system and method
  • Vibration monitoring system and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Such as figure 1 As shown, according to a specific embodiment of the present invention, in a first aspect, the present invention provides a vibration monitoring system, comprising:

[0050] The fiber grating type shock sensor 100, the optical modem 200, the signal processing device 300 and the display terminal 400;

[0051] Such as figure 2 As shown, the fiber grating type shock sensor 100 includes: a weight ball 101, a cantilever beam 102 and a base 109; the cantilever beam 102 is connected to the weight ball 101 at one end and connected to the base 109 at the other end, and the base 109 is placed On the horizontal plane, it is used to support the cantilever beam 102 and the weight ball 101. The weight ball 101 is made of shot put quality rubber or stainless steel.

[0052] Among them, the material of the weight ball is not limited to the above two types, and can be flexibly set according to the application in different objects to be tested. For example, according ...

Embodiment 2

[0072] Such as figure 1 As shown, according to a specific embodiment of the present invention, the present invention provides another vibration monitoring system, comprising:

[0073] The fiber grating type shock sensor 100, the optical modem 200, the signal processing device 300 and the display terminal 400;

[0074] Such as figure 2 As shown, the fiber grating type shock sensor 100 includes: a weight ball 101, a cantilever beam 102 and a base 109; the cantilever beam 102 is connected to the weight ball 101 at one end and connected to the base 109 at the other end, and the base 109 is placed On the horizontal plane, it is used to support the cantilever beam 102 and the weight ball 101. The weight ball 101 is made of shot put quality rubber or stainless steel.

[0075] Among them, the material of the weight ball is not limited to the above two types, and can be flexibly set according to the application in different objects to be tested. For example, according to different ...

Embodiment 3

[0096] Such as Figure 5 As shown, according to a specific embodiment of the present invention, in a second aspect, the present invention provides a vibration monitoring method, comprising:

[0097] Step S100: place the fiber grating type shock sensor 100 on a horizontal plane, the fiber grating type shock sensor 100 senses the vibration, swing and / or tilt caused by changes in external conditions, and generates a light sensing signal, and transmits the light sensing signal to to the optical modem 200;

[0098] Wherein, the cantilever beam 102 includes two fiber gratings 103 and 104, and when the temperature is constant, it can be clearly seen that the wavelength variation is directly proportional to the pressure variation.

[0099] Δλ 1 =K T1 ΔT+K ε1 ε (1)

[0100] Δλ 2 =K T2 ΔT+K ε2 ε (2)

[0101] (2)-(1)

[0102] Δλ=Δλ B2 -Δλ B1 = 2K ε2 ε (3)

[0103] Among them, Δλ 1 is the wavelength offset of fiber Bragg grating FBG1, Δλ 2 is the fiber Bragg grating FBG2 w...

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PUM

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Abstract

The invention provides a vibration monitoring system and method. A fiber grating type vibration sensor is connected with an optical modem, a signal processing device and a display terminal in sequence; the fiber grating type vibration sensor arranged on the horizontal plane senses vibration, swing and/or inclination caused by external condition changes to generate a light sensing signal, a changedwavelength value is demodulated by the optical modem, and then, the signal processing device processes the signal and sends the processing result to a display terminal for display in real time. According to the invention, the problem of real-time monitoring of a to-be-measured object of the splice closure is solved, and the possibility of great property loss and potential safety hazard caused byservice breakdown under the influence of severe environments such as external high temperature, rainstorm, strong wind, icing and the like is avoided.

Description

technical field [0001] The present invention relates to the field of optical fiber grating application technology, in particular to a vibration monitoring system and method. Background technique [0002] In the fields of power system, construction, railway, infrastructure, surveying and mapping, etc., there are common key requirements for specific objects such as keeping horizontal, perpendicular to the ground surface or anti-seismic, which is related to the safety of the industry. For example, in the power system, the transmission line is often equipped with extremely important communication service optical cables under the jurisdiction of the State Grid. Due to business needs and other circumstances, some transmission line towers often carry out disconnection of the communication optical cables on board, and perform welding services on demand. The fiber core is then converged into the OPGW junction box and fixed on the tower base of the transmission line tower. Due to the...

Claims

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Application Information

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IPC IPC(8): G01H9/00
CPCG01H9/004
Inventor 朱修德梅沁张治国蒋頔颜哲昊黄芬吴裕锋祁瑞琳
Owner JIANGSU ELECTRIC POWER CO
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