本文阐述了一种经颅电刺激发生装置的研制过程，该装置主要由STC12C5410单片机、DA转换器、缓冲放大器和隔离装置等构成，可在上位机软件的控制下，产生不同频率、幅值和波形的刺激信号，具有功耗低、安全性好、参数调节方便等特点，对于经颅电刺激疗法的科学研究以及临床应用具有一定的实用价值。%The paper explained the development of a kind of electrical stimulator for transcranial electric stimulation therapy. The stimulator is mainly composed of a STC12C5410 single chip microcomputer, a DA converter, a buffer amplifier, and an isolating device. The stimulator can produce user-defined stimulating signals that have different frequency, voltage, and waveforms through software control hardware. The system is characterized by features such as low-power consumption, improved safety and convenient index-adjustment. The system has certain practical value in the scientiifc research and clinical application of transcranial electric stimulation therapy.
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