Non-contact electrocardiogram sensor and application of non-contact electrocardiogram sensor

Abstract

The invention relates to a non-contact electrocardiogram sensor, which adopts a round double-side printed circuit board (PCB) electrode, wherein three regions are arranged on one side, the three regions are in an electric insulation state, the center round region is a sensing sheet, an annular shielding region and an annular ground wire region are in sequential arrangement towards the outside, three regions are also arranged on the other side, the center round region is a copper covering region, a patch welding region comprising a prepositive operation amplifier and a front end filter is arranged in the center of the copper covering region, the outer periphery of the copper covering region is the annular ground wire region, the region simultaneously occupied by the sensing sheet and the adjacent annular shielding region is symmetrical to the copper covering region arranged on the other side, the annular ground wire regions arranged on the two sides are symmetrical, the output end of the prepositive operation amplifier is respectively connected with the annular shielding region and the copper covering region, the ground end of the prepositive operation amplifier is respectively connected with the annular ground wire regions arranged on the two sides, and the input of the prepositive operation amplifier is connected with the output of the sensing sheet. The double-side PCB electrode is positioned at the open opening end of a metal shielding box, the side provided with the sensing side faces the open opening, and the side provided with the copper covering region faces an inner cavity of the shielding box.

Description

technical field [0001] The invention relates to the monitoring of electrocardiographic signals, in particular to a non-contact electrocardiographic sensor and its application, belonging to the field of biomedical signal measurement. Background technique [0002] Bioelectricity is important information that reflects various physiological states of the human body. The detection and recording of various bioelectricity of the human body has become a reliable basis for mastering the functions of human organs, clinical diagnosis and treatment, and daily health monitoring. Heart disease is one of the major diseases that threaten human health, and electrocardiogram is an important means to detect heart disease. [0003] In traditional ECG measurement systems, Ag / AgCl disposable electrode sheets with conductive glue or suction cup and clip-on electrodes are usually used. These electrodes are in direct contact with the surface skin of the human body. However, as the incidence of hear...

AI Technical Summary

Problems solved by technology

However, as the incidence of heart disease continues to increase, and clinical segmental ECG detection cannot accurately diagnose some special heart disease (such as arrhythmia, myocardial ischemia), such diseases are random, sudden, Intermittent, making long-term, portable, daily ECG monitoring aroused widespread concern

[0004] At present, the development of the ECG Holter instrument meets the above needs, but because it still uses the traditional contact electrode to measure the body surface potential, the long-term contact between the electrode and the skin will bring great irritation to the local skin, and even cause skin allergies and fester, which is bound to bring a lot of discomfort to the patient

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