Double-cantilever beam fiber grating acceleration sensor
An acceleration sensor, fiber grating technology, applied in the direction of acceleration measurement using inertial force, can solve the problems of acceleration measurement influence, poor torsional resistance, weak stability, etc., to improve stability, improve accuracy and stability, avoid The effect of fiber grating chirp effect
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[0016] Such as figure 1 As shown, the fiber grating sensor includes a sensor housing 1, an upper cantilever beam 2, a lower cantilever beam 3, a sensing fiber grating 4, a reference fiber grating 5, a quality block 6, a fiber protection hole 7, a sealing cover 8, a screw 9, an optical fiber Protection tube 10, spring device 11;
[0017] Two cantilever beams with the same shape are fixed on one side of the housing 1 , and the fixed ends of the cantilever beams are connected with the housing 1 as a whole. The two cantilever beams are parallel to each other and have exactly the same shape, which is a combined shape of a rectangle and an isosceles triangle, and are made of exactly the same elastic material. Insert the free ends of the two cantilever beams into the mass block 6, and connect with the mass block 6 as a whole.
[0018] Such as figure 2 As shown, the apex of the isosceles triangle vertex in the combined shape of the cantilever beam is the free end of the cantilever...
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