Shape and Hardness Perception of Robot Soft Finger Based on Fiber Bragg Grating

Due to the increasing demand for tactile sensing of robotic hands, this paper designs a soft robot hand that can realize object shape recognition and hardness detection. Taking advantage of the high sensitivity and wavelength division multiplexing of Fiber Bragg Gratings (FBG), a distributed detection method using a single fiber in series with multiple FBG is proposed, which can demodulate bending and pressure at the same time, reduce wiring and improve efficiency.