A new type of pressure sensor and its physiological signal measurement method
A technology of a pressure sensor and a measurement method, applied in the field of detection, can solve problems such as the inability to adapt to the requirement of close fit of the organism, the pressure sensor is susceptible to vibration, and it is difficult to accurately collect, etc., and achieves simple and rapid acquisition, strong anti-interference ability, quick response
Active Publication Date: 2020-12-29
TSINGHUA UNIV
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Problems solved by technology
[0003] The traditional pressure pulse wave acquisition and acquisition method has the following defects: it is necessary to accurately find the position of the pulse such as the inch, the ruler, etc. during operation, and it is difficult to accurately collect without the help of specialized professionals; Measurement in a quiet environment, if the measurement method is improper, will lead to large deviations in the measurement results; many pressure sensors are rigid sensors, which cannot meet the requirements of close fit of organisms; high-precision flexible pressure sensors are priced according to the area, very expensive
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[0028] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0029] figure 1 It is a schematic diagram of the structure and principle of the novel pressure sensor provided by the embodiment of the present invention. Such as figure 1 As shown, the novel pressure sensor includes a strain cell 1 and a measurement unit; wherein:
[0030] The strain cell 1 is used to sense changes in pressure and produce elas...
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The embodiment of the invention provides a novel pressure sensor and a physiological signal measuring method thereof. The novel pressure sensor comprises a strain unit and a measuring unit, wherein the strain unit is used for sensing the change of pressure and generating elastic deformation, and the strain unit is made of an incomplete light-transmitting material; the measuring unit comprises a light emitting module and a light receiving and converting module; and after passing through the strain unit, light emitted by the light-emitting module is received by the light receiving and convertingmodule and converted into an electric signal, and the change of the electric signal reflects the change of pressure. According to the novel pressure sensor and the physiological signal measuring method thereof provided by the embodiment of the invention, the pressure change is converted into the deformation of the strain unit, then converted into the optical signal and further converted into theelectric signal, so that the pressure change information is simply, conveniently and quickly acquired; and the pressure sensor has the advantages of high precision, capability of measuring tiny pressure change, high sensitivity, quick pressure change response, small size, convenience in use, strong anti-interference capability and the like.
Description
technical field [0001] The invention relates to the technical field of detection, in particular to a novel pressure sensor and a method for measuring physiological signals thereof. Background technique [0002] With the development of electronic and computer technology, the acquisition ability of tiny signals has been improved. Taking pulse wave acquisition as an example, there are five main technical means for pulse wave acquisition: pressure sensing technology, pulsation displacement technology, vessel volume sensing technology, pulsation vibration frequency technology and ultrasonic Doppler technology. [0003] The traditional pressure pulse wave acquisition and acquisition method has the following defects: it is necessary to accurately find the position of the pulse such as the inch, the ruler, etc. during operation, and it is difficult to accurately collect without the help of specialized professionals; Measurement in a quiet environment, if the measurement method is i...
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IPC IPC(8): A61B5/02A61B5/00
CPCA61B5/02A61B5/4854A61B5/6823A61B5/6824A61B5/6843
Inventor 刘长松王丽婷陈彦赵强丁晓青彭良瑞甄黎明
Owner TSINGHUA UNIV