Pressure signal acquisition device and human body physiology signal acquisition pad body

Abstract

The invention discloses a pressure signal acquisition device and a human body physiology signal acquisition pad body. The pressure signal acquisition device comprises a flexible closed cavity, a piezoelectric thin film and a signal processing unit, wherein a through hole is formed in the flexible closed cavity; the piezoelectric thin film seals the through hole; when the flexible closed cavity is squeezed by external force, the piezoelectric thin film deforms and generates corresponding electric signals; the signal processing unit receives the electric signals and carries out corresponding processing. According to the pressure signal acquisition device, the through hole is formed in the flexible closed cavity, the piezoelectric thin film seals the through hole, and the pressure to the piezoelectric thin film at the through hole greatly varies when the pressure to the large area of the surface of the flexible closed cavity slightly varies, so that the high-sensitivity sensing is realized. The human body physiology signal acquisition pad body provided with the pressure signal acquisition device can collect human body physiology signals on a flexible pad body in a high-sensitivity manner.

Description

technical field [0001] The invention relates to the field of human physiological signal acquisition, in particular to a pressure signal acquisition device and a human physiological signal acquisition pad. Background technique [0002] The human physiological signal acquisition device in the prior art needs to closely contact the signal electrode with the human skin to collect the pressure signal generated by the muscles and convert it into an electrical signal for processing to obtain important physiological signals of the human body, such as heartbeat, breathing and convulsions and other physiological signals. [0003] At present, there is also a non-contact human physiological signal acquisition device. A piezoelectric thin film is attached to the outer wall or inner wall of a flexible capsule, which can also collect human physiological signals. However, its pressure signal acquisition sensitivity is relatively low. Not high, when a user's heartbeat is weak or breathing i...

AI Technical Summary

Problems solved by technology

[0003] At present, there is also a non-contact human physiological signal acquisition device. A piezoelectric thin film is attached to the outer wall or inner wall of a flexible capsule, which can also collect human physiological signals. However, its pressure signal acquisition sensitivity is relatively low. Not high, when a user's heartbeat is weak or breathing is weak, the corresponding signal collected will be weak, and misjudgment may occur

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