Design and Development of sEMG-Controlled Prosthetic Hand with Temperature and Pressure Sensory Feedback

In this paper we deal with the design and development of a prosthetic hand using sEMG control, temperature and pressure sensors. Through the acquisition of the sEMG produced by the movement of the flexor digitorum superficialis, the prosthetic hand controlled the contraction and relaxation of the prosthetic hand. At the same time, the prosthetic hand can automatically detect the pressure and temperature of objects being held. It can pass the real-time pressure and temperature of the object held by the prosthetic hand to users, who can independently control the force, perceive the temperature of the object, and heat the surface of the prosthetic hand to the same temperature as the body by using the heating films. The prosthetic hand can provide better satisfaction to users and promote the humanistic care of disabled people. At present, the prosthetic hand has achieved the functions below: the acquisition of the sEMG; movement control of finger opening and closing; the acquisition of pressure and temperature of the object being held; pressure and temperature perception in prosthetic hand users; thermostatic control of prosthetic hand surface.