Capacity coupling type electric field sensor used for dynamic electrocardiogram monitoring

An electric field sensor and capacitive coupling technology, applied in the field of sensors, can solve problems such as human stimulation, skin discomfort, difficult patient and elderly monitoring, achieve high-precision and reliable detection, reduce static noise interference, and reduce the effect of attenuation
CN102973261BActive Publication Date: 2014-05-14INST OF ELECTRONICS CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
INST OF ELECTRONICS CHINESE ACAD OF SCI
Publication Date
2014-05-14

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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.
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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...

Claims

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