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Fiber bragg grating vibration sensing component, fiber bragg grating vibration sensing device, vibration measuring system and method

A fiber grating and vibration sensing technology, which is used in measuring devices, measuring ultrasonic/sonic/infrasonic waves, instruments, etc., can solve the problem of low measurement accuracy, and achieve the effects of strong resolution, good dynamic response and simple structure

Active Publication Date: 2011-06-01
NUCTECH CO LTD +1
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  • Abstract
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Problems solved by technology

When using the above-mentioned sensor to sense the vibration of rails or sleepers, since there is a high-voltage power source forming an interference source near the rail, the above-mentioned electric sensor has the problem of low measurement accuracy in the environment of high magnetic field and high electric field

Method used

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  • Fiber bragg grating vibration sensing component, fiber bragg grating vibration sensing device, vibration measuring system and method
  • Fiber bragg grating vibration sensing component, fiber bragg grating vibration sensing device, vibration measuring system and method
  • Fiber bragg grating vibration sensing component, fiber bragg grating vibration sensing device, vibration measuring system and method

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Embodiment Construction

[0025] The technical solutions of the present invention will be further specifically described below through the embodiments and in conjunction with the accompanying drawings. In the specification, the same or similar reference numerals designate the same or similar components. The following description of the embodiments of the present invention with reference to the accompanying drawings is intended to explain the general inventive concept of the present invention, but should not be construed as a limitation of the present invention.

[0026] figure 1 , figure 2 with image 3 A fiber grating vibration sensing component 10 of the present invention is shown. specifically, figure 1 is a schematic diagram of the vibration structure of the fiber grating vibration sensing component of the present invention; figure 2 Shows securing the fiber grating strain gauge to the figure 1 Schematic diagram on the vibrating structure shown; image 3 display will figure 2 Schematic d...

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Abstract

The invention discloses a fiber bragg grating vibration sensing component, which comprises a base part, an end part, a cantilever beam and a fiber bragg grating strain gauge, wherein the end part constitutes a vibration mass block; the cantilever beam is connected between the base part and the end part; the cantilever beam constitutes a vibration amplification arm; two ends of the fiber bragg grating strain gauge are fixed on the base part and the end part respectively; and the fiber bragg grating strain gauge is used for detecting the strain of the cantilever beam. The invention also relates to a fiber bragg grating vibration sensing device, a vibration measuring system and method.

Description

technical field [0001] The invention relates to a fiber grating vibration sensing component, a fiber grating vibration sensing device, a vibration measuring system and a method. Background technique [0002] In the prior art, commonly used sensors for measuring vibration include acceleration sensors, speed sensors and displacement sensors. The acceleration sensor uses piezoelectric crystals to convert the acceleration signal into a charge signal, and the speed sensor uses the principle of electromagnetic induction to convert the speed signal into a voltage signal. , The displacement sensor uses the eddy current effect to convert the displacement signal into an electrical signal. However, the aforementioned sensors are all based on the principle of converting mechanical energy into electrical energy. When using the above-mentioned sensors to sense the vibration of rails or sleepers, since there is a high-voltage power source forming an interference source near the rails, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01H9/00
Inventor 陈志强徐惠康温海宁钱鸿治张丽黄志峰吉俊
Owner NUCTECH CO LTD
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