Double optical reflectors-based dynamic torque optical fiber sensing device
A light reflector and dynamic torque technology, applied in the field of sensors, can solve the problems of small test dynamic range, complex structure, and sensitivity to be improved, and achieve the effect of low cost, high sensitivity, and flexible use
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Embodiment 1
[0036] Such as figure 1 , figure 2 A dynamic torque optical fiber sensing device based on a double optical reflector is shown, including a helical structure, a rotating shaft 12, a light source 10, a 1X2 optical coupler 8, a photodetector 11 and a processing unit 9, the helical structure A plurality of A-side deformed teeth 4-1 and a plurality of B-side deformed teeth 4-2 are provided on opposite sides of the interior and along the longitudinal direction of the helical structure, at least two ends of the helical structure are fixed on the rotating shaft 12, the The relative position between the A-side deformed tooth 4-1 and the B-side deformed tooth 4-2 changes with the change of the torque of the rotating shaft 12, and the A-side deformed tooth 4-1 and the B-side deformed tooth 4-2 are staggered Layout, and there is a signal optical fiber 33 sandwiched between the A-side deformed tooth 4-1 and the B-side deformed tooth 4-2, and the A-side deformed tooth 4-1 and the B-side d...
Embodiment 2
[0043] Such as image 3 As shown, in this embodiment, the difference from Embodiment 1 is that the A side and the B side inside the spiral housing 4 are not connected except at the two ends of the spiral housing 4, and the other parts are not connected during rotation. When the shaft 12 is twisted, there will be a greater positional variation of side A relative to side B, thereby making the test results more accurate. In this embodiment, the structures, connections and working principles of other parts are the same as those in Embodiment 1.
Embodiment 3
[0045] Such as Figure 4 As shown, in this embodiment, the difference from Embodiment 1 is that: the A side and the B side inside the spiral housing 4 are connected by an elastic material 35, and when the rotating shaft 12 is twisted, the A side is opposite to the B side There is a large position change, thereby improving the accuracy of the test results. In this embodiment, the structures, connections and working principles of other parts are the same as those in Embodiment 1.
[0046] Example 3
[0047] Such as Figure 5 , Figure 6 As shown, in this embodiment, the difference from Embodiment 1 is that the spiral housing is a groove 5 arranged on the surface of the rotating shaft 12, and a plurality of A sides are arranged on opposite sides of the groove 5 Deformation teeth 4-1 and multiple B-side deformation teeth 4-2, the A-side deformation teeth 4-1 and B-side deformation teeth 4-2 are arranged in a staggered manner, and a signal optical fiber 33 is sandwiched between...
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