Ballistocardiogram signal collection system

Abstract

The invention provides a ballistocardiogram signal collection system.The system comprises a ballistocardiogram signal collection and conduction device and an extremely low frequency micro-vibration signal inductor.The ballistocardiogram signal collection and conduction device comprises a vibration collection panel, a conduction piece and a base.The conduction piece is fixedly installed on the bottom face of the vibration collection panel.The vibration collection panel is connected with the base so that uniform supporting of the base for the periphery of the vibration collection panel can be formed; the extremely low frequency micro-vibration signal inductor comprises a vibration receiving piece, a piezoelectric film sensing piece and a support, the vibration receiving piece is connected with the support in a matched mode so that uniform supporting of the support for the periphery of the vibration receiving piece can be formed, and the bottom face of the vibration receiving piece and a through hole inside the support form a cavity B; the piezoelectric film sensing piece is flatly attached to the bottom face of the vibration receiving piece; the support is arranged inside a cavity A.The ballistocardiogram signal collection system is simple in structure, low in cost, high in sensitivity, small in size and capable of achieving full-coverage of ballistocardiogram signals belonging to extremely low frequency vibration signals.

Description

【Technical field】 [0001] The invention relates to the field of signal processing of a ballistocardiogram, in particular to a signal acquisition system of a ballistocardiogram. 【Background technique】 [0002] The pulsation and impact of the heart can cause a series of periodic vibrations in the human body. These signals are recorded by sensitive instruments to form a waveform diagram, and then the diagnosis of human diseases is made by observing the waveform diagram, which is the origin of shockcardiography. As early as 1877, there was a document documenting that the beating of the heart can cause body vibrations. In the middle of the 20th century, the research on shockcardiography reached its climax. However, due to the relatively poor science and technology at that time, the recording instruments were cumbersome and complicated to operate. , it is impossible to accurately, efficiently and conveniently produce a cardio-impact map. As a result, there are fewer and fewer rele...

AI Technical Summary

Problems solved by technology

In recent years, with the development of science and technology, especially the improvement of the accuracy of key components and computer computing power, the development of ballistocardiogram signal detection equipment has once again become a worldwide hot spot, but so far no very mature products have appeared

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