A reflective optical fiber acceleration measuring device
An acceleration measurement and reflective technology, which is applied in the direction of measuring devices, velocity/acceleration/shock measurement, and acceleration measurement, can solve problems such as distortion, intrusive damage, and vibration signal distortion.
Inactive Publication Date: 2021-05-11
NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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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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[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0031] Such as figure 1 , 2 As shown in and 3, the present invention includes a measuring part and a signal processing part. The measuring part includes a base 1, a housing 5 and a measuring mechanism arranged in the housing 5. The three are integrally sealed to form a cavity, and the signal processing part includes Collimated light source 18, left detector 19, right detector 16 and measurement and control circuit 17, described measurement and control circuit...
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The invention discloses a reflective optical fiber acceleration measuring device, which includes a measuring part and a signal processing part. The measuring part includes a base, a casing and a measuring mechanism arranged in the casing. The whole body is sealed to form a cavity. The signal processing part includes A collimated light source, a left detector, a right detector, a conditioning amplifier circuit, a driving circuit and a microcontroller. The present invention uses optical fiber as the sensitive element, and is a reflective acceleration sensing device constructed with a cantilever beam structure. The device has the characteristics of temperature self-compensation, high sensitivity, good dynamic response, anti-electromagnetic interference and non-invasiveness to the local electromagnetic environment. Monitoring of force, speed, acceleration, vibration, etc., especially suitable for applications in complex and strong electromagnetic environments.
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...
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IPC IPC(8): G01P15/093G01H9/00
CPCG01H9/004G01P15/093
Inventor 陈建明王成凤白磊郭香静赵明明王为术陈嘉琦郏一方李博阳朱莎莎
Owner NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER