Design of a Signal Regulating Circuit for Wearable ECG Sensor Applications

The design of this circuit is to solve the problems during ECG signal collection, such as noise interference and circuit complexity. To ensure the volume, signal accuracy, and economy of the circuit, the OP07 chip is used as the operational amplifier. What's more, a 0.1Hz low-pass filter, 250Hz high-pass filter, and two-stage amplifier circuit are designed. The simulation results show that the circuit is suitable for large multiple, and the filtering performance is also excellent. This circuit effectively suppresses the common-mode interference, power frequency interference, EMG interference in ECG signal. It improves the accuracy of ECG collection and is suitable for Wearable ECG devices and medical monitoring.