Wearable Dual-Channel Transcutaneous Acupoint Electrical Stimulator Design

In recent years, as an effective means to relieve pain instead of traditional acupuncture, transcutaneous acupoint electrical stimulation has attracted much attention. In this paper, a wearable two-channel transcutaneous acupoint electrical stimulator based on STM32 is designed. The device can adjust the stimulation parameters in real time through the mobile phone APP, including the selection of stimulation channels, frequency and amplitude adjustment. The results show that the pulse width of the stimulus is 1ms, which can be adjusted in real time at the frequency of 2-100Hz and the amplitude of 0-30mA. The bipolar pulse output is supported, and the high and low frequency waveform interleaving constant current output can be achieved to ensure the stability and effectiveness of the stimulus. The wearable double-channel transcutaneous acupoint electrical stimulator designed in this paper has the advantages of high portability and intelligence, and has certain clinical and commercial value.