Method and detection sensor for detecting optical fiber grating vibration of large-scale mechanized equipment
A fiber grating and fiber grating demodulation technology, which is applied in the field of sensors, can solve problems such as the inability to apply high-frequency measurement, hinder the application of rotating machinery, and poor frequency dynamic response characteristics, and achieve strong anti-electromagnetic interference, eliminate influence, and dynamic fast response effect
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[0022] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0023] The overall installation structure of the non-contact fiber grating dynamic detection sensor: the two ends of the fiber grating 2 are respectively glued into the first capillary steel pipe 3 and the second capillary steel pipe 4, wherein the first capillary steel pipe 3 is connected to one end of the metal sleeve 5, The second capillary steel pipe 4 is connected to the central hard core of the metal diaphragm 6, and the metal diaphragm 6 is welded to the other end of the metal sleeve 5. During the installation process, the fiber grating 2 is pre-tightened, and the first magnet 8-b and The second magnet 8-c is a U-shaped sensing probe formed by connecting the soft iron 8-a—the magnetic coupling sensing probe 8, and the magnetic coupling sensing probe 8 is connected to the central hard core of the metal diaphragm 6 through the connecting rod 7 , which co...
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