Title:
PULSE SIGNAL PROCESSING CIRCUIT AND COLLECTION SYSTEM BASED ON PIEZORESISTIVE PRESSURE SENSOR
Document Type and Number:
WIPO Patent Application WO/2020/258118
Kind Code:
A1
Abstract:
Disclosed are a pulse signal processing circuit and collection system based on a piezoresistive pressure sensor. The circuit comprises: a differential amplification circuit, a high-pass filtering-amplification circuit, a pressure signal amplification circuit, and a voltage boosting circuit, wherein the differential amplification circuit converts a pulse differential voltage signal into a single-end first voltage signal, the first voltage signal comprising a static pressure signal and a dynamic pulse wave signal; the high-pass filtering-amplification circuit extracts, from the first voltage signal, the dynamic pulse wave signal and amplifies same; the voltage boosting circuit performs voltage boosting on the amplified dynamic pulse wave signal to obtain the output of a second voltage signal; and the pressure signal amplification circuit amplifies the first voltage signal and then outputs same, wherein the magnitude of the dynamic pulse wave signal and the static pressure signal can be respectively calculated according to the first voltage signal and the second voltage signal. In the present disclosure, a static pressure signal and a dynamic pulse wave signal detected by a piezoresistive pressure sensor can be separated and amplified, thereby facilitating the accurate measurement of a pulse signal.
Inventors:
CHEN CHUANGLU (CN)
LI ZHIQIANG (CN)
ZHANG SHAOLONG (CN)
ZHANG YITAO (CN)
ZHANG HAIYING (CN)
LI ZHIQIANG (CN)
ZHANG SHAOLONG (CN)
ZHANG YITAO (CN)
ZHANG HAIYING (CN)
Application Number:
PCT/CN2019/093156
Publication Date:
December 30, 2020
Filing Date:
June 27, 2019
Export Citation:
Assignee:
INST OF MICROELECTRONICS CAS (CN)
International Classes:
A61B5/02; A61B5/021
Foreign References:
| CN107049267A | 2017-08-18 | |||
| CN109464133A | 2019-03-15 | |||
| CN104224138A | 2014-12-24 | |||
| CN101099665A | 2008-01-09 |
Other References:
DI JIUJUN,: "Advanced Development of Acquisition System on Pulse Tracings of Traditional Chinese Medicine", CHINA MASTER’S THESES-TIANJIN UNIVERSITY, 1 January 2008 (2008-01-01), XP055774571
Attorney, Agent or Firm:
CHINA SCIENCE PATENT & TRADEMARK AGENT LTD. (CN)
Download PDF: