Design of Control System for a Rehabilitation Device for Joints of Lower Limbs

Rehabilitative treatment is beneficial to recover the function of joints, and up to now this treatment is mostly carried on under the supervision of nursing staff. To solve the problem caused by overload work for the nurse, a rehabilitation device of high stability and reliability is presented. The mechanical object of the control system is introduced first, and then the structure of the control system is given. In hardware design section, hardware selection and parameters configuration are introduced. Then the scheme of circuits for converting body pulse sensor signals, pressure signals and the whole circuit of control system are illustrated respectively in detail. As for software design section, the control program design in PLC, GUI design in IPC and database design are given. Finally, some key technologies about the implementation for hardware and software are also mentioned about. Testing shows all software and hardware modules of the control system function well and the system is able to work beneficial to the recovery of joints.