Patent ID: 8621941

Claim:
A feedback system for identifying movement and intensity of an external force, comprising: an operation plate; a pressure-sensing unit comprising an elastic member supporting the operation plate and a pressure sensor inside the elastic member, the pressure sensor comprising a pressure sensitive film; a support plate on which the elastic member and the pressure sensor are mounted; and a receiving block fastened to the support plate, the receiving block comprising a limiting stopper over the operation plate in order to restrict upward movement of the operation plate; wherein an inner side of the elastic member is filled with fluid material which acts on the pressure sensitive film; and wherein the operation plate is driven by the external force to be slant which extrudes the elastic member to deform so as to change fluid pressure of the fluid material limited in the elastic member, and such change of the fluid pressure can be sensed by the pressure sensitive film of the pressure sensor so as to identify the movement and the intensity of the external force.