| Summary: | Aiming at the problem that electrodes are easy to fall off and not easy to be found in the process of electromyography acquisition, a detection system for electrodes falling off applied in electromyography acquisition is designed. In this paper, an integrated operational amplifier LM358 is designed as a follower under the single power supply mode. It can output a stable high level when the same phase end is suspended. By using the feedback voltage of the driven right leg circuit in the electromyography acquisition system, an electrodes drop detection circuit which can be effectively combined with the electromyography acquisition system is designed. In order to reduce the problem of false detection caused by interference, the algorithm of reducing false detection when STM32 single chip computer detects the electrode falling off is given. In the actual circuit application, the electrode drop detection system has achieved good detection results.
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