Optical fiber vibration sensor, vibration sensing method and system based on fluorescence method
A vibration sensing system and optical fiber vibration technology, applied in instruments, measuring devices, measuring ultrasonic/sonic/infrasonic waves, etc., can solve problems such as high cost and complex structure of optical fiber vibration sensors, and achieve low cost, high accuracy of calculation results, The effect of broad development space
Active Publication Date: 2016-03-02
南京五石金传感技术有限公司
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Problems solved by technology
The above optical fiber vibration sensor can work very effectively in the environment of strong electromagnetic interference, and the measurement accuracy is relatively high, but this type of optical fiber vibration sensor has a complex structure and high cost
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[0020] The technical solutions of the present invention will be described in further detail below in conjunction with the accompanying drawings.
[0021] Such as figure 1 Shown is the flowchart of the fiber optic vibration sensing system based on the fluorescence method.
[0022] A fiber optic vibration sensor based on the fluorescence method, comprising a vibration probe, an optical beam splitter and an excitation light source; the vibration probe includes a probe housing, a fluorescent target and an optical fiber with a first end and a second end, the first end of the optical fiber Connected to the excitation light source, one of the fluorescent target and the second end of the optical fiber is elastically connected to the probe housing, and the other is rigidly connected to the probe housing, and the fluorescent target is not in contact with the second end of the optical fiber; The target surface of the fluorescent target is coated with two different fluorescent materials....
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The invention discloses an optical fiber vibration sensor based on a fluorescence method, a vibration sensing method and a system. The optical fiber vibration sensor comprises a vibration probe, a light beam splitter and an excitation light source. The vibration probe comprises a probe shell, a fluorescence target and an optical fiber with a first end and a second end, the first end of the optical fiber is connected with the excitation light source, one of the fluorescence target and the second end of the optical fiber is in elastic connection with the probe shell, the other of the fluorescence target and the second end of the optical fiber is in rigid connection with the probe shell, and the fluorescence target is not in contact with the second end of the optical fiber. The light beam splitter is in serial connection with a light path between the second end of the optical fiber and the excitation light source and used for coupling an excitation light path emitted by the excitation light source and a reflective light path reflected by the fluorescence target to the optical fiber. A vibration sensor system is high in precision of a calculation result, optical signals are not interfered under interference of a strong electromagnetic field, and the system can work effectively and is simple in structure and low in cost.
Description
technical field [0001] The invention relates to an optical fiber vibration sensor based on a fluorescence method, a vibration sensing method and a vibration sensing system, and belongs to the technical field of analysis and measurement control. Background technique [0002] Vibration is a common physical phenomenon that widely exists in people's production and life. In the field of engineering, vibration often has adverse effects on equipment, and even causes damage to equipment. For example, in the field of automobile design, improving the ride comfort of vehicles and reducing body vibration and noise vibration have become an important part of automobile design; high-precision CNC machine tools also need to strictly control their own vibration. Therefore, the vibration test for mechanical equipment has always been the focus of attention of engineers and technicians. [0003] Existing sensors for testing vibration include electrodynamic, piezoelectric, eddy current, induct...
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IPC IPC(8): G01H9/00
Inventor 严跃王大明孙军吴江耿开胜
Owner 南京五石金传感技术有限公司