Capacity coupling type electric field sensor used for dynamic electrocardiogram monitoring

Abstract

The invention discloses a capacity coupling type electric field sensor used for dynamic electrocardiogram monitoring and relates to a sensor technology. The capacity coupling type electric field sensor used for dynamic electrocardiogram monitoring is mainly composed of a sensitive electrode, a source shield drive electrode, a dielectric layer, a buffer layer, a preposed operational amplifier, a sequent signal process system and the like. The front-loading operational amplifier integrates a protective structure, a bootstrap circuit and an input capacity bucking circuit, and the buffer layer which is made of polymer materials, strong in water absorption and capable of releasing moisture slowly is added on the dielectric layer. Due to the fact that the sensor implements electrocardiogram monitoring by adopting a method of capacity coupling, electrodes are not required to be contacted with skin directly, and the sensor has the advantages of being free of conductive paste, convenient to wear, convenient in dynamic monitoring for a long time and the like. In addition, by a method of controlling the buffer layer to release moisture, partial humid environment between the sensitive electrode and skin and clothes is changed, and static noise interruption caused by friction is greatly reduced.

Description

technical field [0001] The invention relates to the technical field of sensors, in particular to a capacitive coupling electric field sensor for dynamic electrocardiogram monitoring. Background technique [0002] With the progress of society and the continuous development of science and technology, people's requirements for quality of life are getting higher and higher, and health status has become the focus of public attention. Heart disease is one of the three major diseases (heart disease, cerebrovascular disease and cancer) that cause human death, and the number of deaths caused by heart disease remains high every year. For a long time, the diagnosis and research of heart disease has always been a major topic in the medical field. [0003] Electrocardiogram (ECG) is the electrocardiogram (ECG) produced by the heart in the electrochemical activity of depolarization and repolarization, which generates a potential difference on the human body. Body surface ECG signals ref...

AI Technical Summary

Problems solved by technology

This kind of electrode is a one-time use product and cannot be reused, so it is difficult to realize the monitoring of patients and the elderly in the community and family conditions

Moreover, these ECG monitoring systems require electrodes to directly contact the human body, and due to the need to apply conductive paste, it is easy to impose a certain stimulus on the human body. Long-term monitoring will cause discomfort or even ulceration of the skin of the monitored person. will affect the accuracy of the test results

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