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Automatic Temperature Compensation for Cuffless Blood Pressure Measurement Using Photoplethysmography 基於光電容積描記法的非袖帶式血 壓測量的自動溫度補償方法

Summary
基於光電容積描記法的血壓測量可以對動 脈血壓進行連續長時間的無袖帶、非侵入式測量。但是，當該方法應用於肢體末端， 如指尖時，末端溫度低於正常溫度值會引起一定的測量誤差。當溫度過低時，溫度對 測量的準確性可能會造成很大的影響。本發明提供了一種方法，可以對溫度變化對血 壓測量造成的誤差進行補償，從而實現溫度補償的自動校正。利用光電容積描記信號 本身特徵隨溫度變化的規律來表徵溫度變化情況，該方法可以補償溫度對由光電 容積描記法測量的血壓結果的影響， 而無需增加其他的溫度感測器。
Application No.
03/ENG/146
Others
Inventor(s): Professor Yuan Ting ZHANG, Department of Electronic Engineering

Patent Status:  Chinese Patent Pending  Hong Kong Patent Pending

Country/Region
Hong Kong

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