Low-frequency accelerometer based on fiber grating
A technology of acceleration sensor and optical fiber grating, which is applied in the direction of measurement of acceleration, velocity/acceleration/shock measurement, acceleration measurement using inertial force, etc. It can solve the problems of application limitation, difficulty in measurement, difficulty in overcoming the influence of electromagnetic field interference, etc., and achieve strong Anti-electromagnetic interference ability, high sensitivity effect
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[0019] The present invention will be further described below in conjunction with accompanying drawing.
[0020] Such as Figure 1-5 As shown, this embodiment provides a low-frequency acceleration sensor based on fiber gratings, including a base 1, on which at least one set of elastic mass components is provided, and the elastic mass components include a mass block 2 of a cuboid structure and a curved elastic piece 5 , the curved shrapnel is L-shaped, and its bend is a circular arc transition. There are a plurality of through holes on the curved shrapnel. The mass block 2 is installed under the curved shrapnel 5, and multiple One threaded hole, one end of 5 of the curved shrapnel is connected with the base 1, the other end is pressed onto the base with a screw 3, and a fiber grating 6 is installed above the bent shrapnel, and the fiber grating 6 passes through the ring Oxygen resin 4 is bonded to the curved elastic pieces 5, and when the elastic mass components are more than t...
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