Application of digital signal processor in EMG-based human machine interface

The paper presents a electromyography (EMG) acquisition system of human-machine interface. After being transferred through amplifier and AD converter, The EMG signal then goes into feature extraction and classification procedures. finally, gesture recognition is completed and corresponding commands are output to control peripherals. The system, which is based on DSP TMS320F2812, utilize the chip's rich peripheral and outstanding capability of digital signal processing to complete the work of EMG information acquisition, processing, feature extraction and IO port control. A EMG amplifier and DSP development board were designed in system for hardware, also, DSP algorithm was designed to process EMG information and control IO port. thus a man-machine interface based on embedded technology and miniaturization was built.