Design of spatial deformation sensor based on the technologies of Compliant Mechanisms and Fiber Bragg Grating

At present, due to the “Dimension Matching Problem”, which describing the conflicts between the “one-dimensional” measurement characteristics of fiber grating sensors and the “Multi-dimensional” deformed of objects to be measured, the development of Fiber Bragg Grating Sensors towards the detection of the multi-dimensional deformation in the space has been cumbered. To solve this problem, a new type of sensor is designed, which is based on the technologies of Compliant Mechanisms and fiber Bragg grating to achieve the detection of the deformation in the space. To detect different deformation, a variety of different styles of compliant mechanisms can be designed in terms of different pasting methods of Fiber Bragg Grating. In addition, we establish different mathematical models according to the geometric characteristics of compliant mechanisms. Then, combining with fiber Bragg grating sensing principle, we constitute the computing model of the practical application of the spatial deformation sensor. Based on the ideas presented above, this paper makes a trial of a spatial deformation sensor successfully, and achieves the target.