Electrocardiogram detection device and detection circuit

Abstract

The invention provides an electrocardiogram detection device and a detection circuit, and belongs to the technical field of electronics. A housing of the electrocardiogram detection device may be made of a conductive material, and the electrocardiogram detection device may include a voltage holding circuit for providing a target potential to the housing. Due to the fact that the potential difference between the target potential provided by the voltage holding circuit and the reference potential provided by the electrocardiogram detection circuit for a third electrode is small, even if a user touches the housing by mistake in the ECG detection process, and consequently, the housing and the third electrode are conducted, no leakage current is generated between the housing and the third electrode or the generated leakage current is small, so that the interference to the ECG signal can be effectively reduced, and the ECG detection accuracy is ensured.

Description

technical field [0001] The present application relates to the field of electronic technology, in particular to an electrocardiogram detection device and a detection circuit. Background technique [0002] With the development of technology, the functions of wearable devices are becoming more and more abundant. At present, wearable devices such as smart watches (or smart bracelets) usually have the function of electrocardiogram (electrocardiogram, ECG) detection. [0003] In related technologies, an ECG detection circuit may be integrated in a smart watch, and the ECG detection circuit may be respectively connected to electrodes of a left arm (LA), a right arm (RA) and a right leg (RL). The ECG detection circuit can collect the user's ECG signal through the LA electrode and the RA electrode, and can provide the user with a reference potential through the RL electrode to ensure the reliability of detection. Wherein, the LA electrodes and RL electrodes are generally arranged o...

AI Technical Summary

Problems solved by technology

Therefore, when the user's right hand touches the RA electrode for ECG detection, if it touches the metal watch case by mistake, the RL electrode will form a current path through the human body and the metal watch case, because there is a potential between the RL electrode and the metal watch case Poor, so a leakage current path will be formed between the RL electrode and the metal case, which will affect the accuracy of ECG detection

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