关键词: 生物反馈, 电刺激, 肌电信号, 刺激电流, 微处理器

Abstract: In order to improve the conventional stimulator with non-standard parameters and poor efficacy using the passive mode of the treatment，the stimulator employing an audio-visual feedback is developed based on the microprocessor technology.With the reminder of both voice and visualization signal，trainers can take the initiative to participate in training and try his best to generate a weak electromyographic signal.The real-time monitoring and regulating function for the stimulating current is innovatively achieved.Through the above function，it’s easy for doctors to set up the stimulating intensity according to different patients.In the newly designed stimulator，programmable interactive way using touch-screen is employed so that the treatment parameters can be accurately quantified and set up.The test shows that treatment parameters have achieved stepless adjustment，display and accurately quantification.It’s beneficial to contrast the efficacy under different parameters and improve the accuracy and repeatability of the stimulator.

Key words: biofeedback, electrical stimulation, electromyographic signal, stimulating current, microprocessor