Reflection fiber acceleration measurement device

Abstract

The invention discloses a reflection fiber acceleration measurement device. The reflection fiber acceleration measurement device comprises a measurement part and a signal processing part, wherein themeasurement part comprises a substrate, a shell and a measurement mechanism, wherein the measurement mechanism is arranged in the shell, the whole is sealed to form a cavity, and the signal processingpart comprises a collimating light source, a left detector, a right detector, a conditioning amplification circuit, a driving circuit and a micro controller. In the reflection fiber acceleration measurement device, a fiber is used as a sensitive component, the reflection fiber acceleration measurement device is built by a cantilever beam structure, and the device has the characteristics of temperature self-compensation, high sensitivity, good dynamic response, electromagnetic interference resistance and no invasion to a local electromagnetic environment, is used for monitoring a force, a speed, acceleration and vibration and is particularly suitable for application of a complicated and strong electromagnetic environment.

Description

technical field [0001] The invention relates to the field of sensor measuring equipment, in particular to a reflective optical fiber acceleration measuring device. Background technique [0002] At present, an acceleration sensor is a sensor capable of measuring parameters such as force and displacement related to acceleration. The traditional acceleration sensor is composed of a mass block, a damper, an elastic element, a sensitive element, and an adjustment circuit. During the acceleration process, the sensor uses Newton's second law to obtain the acceleration value by measuring the inertial force on the mass block. According to different sensor sensitive elements, common acceleration sensors include capacitive, inductive, strain, piezoresistive, piezoelectric, and MEMS acceleration sensors based on micro-electromechanical technology in recent years. The above-mentioned acceleration sensors are susceptible to the influence of the electromagnetic field around the measuremen...

AI Technical Summary

Problems solved by technology

The above-mentioned acceleration sensors are susceptible to the influence of the electromagnetic field around the measurement environment, the crosstalk between the signal lines and the interference caused by the resistance of the long signal ground wire during use, resulting in distortion or distortion of the transmitted vibration signal

At the same time, improper connection between the output connector of the accelerometer, the cable connector and the cable will also generate spurious harmonics, which will be superimposed on the vibration signal, thus affecting the accuracy of the verification

In addition, in some occasions where accurate detection of electromagnetic field parameters is required at the same time, monitoring of high-voltage power transmission and distribution equipment, etc., the use of these acceleration sensors will cause intrusive damage to the electromagnetic environment and cause adverse effects such as a decline in the insulation performance of high-voltage equipment. As for limiting the use of traditional sensors

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