PWM CIRCUIT DUTY RATIO ADJUSTMENT METHOD AND SYSTEM FOR BLOOD PRESSURE MEASUREMENT APPARATUS

WIPO Patent Application WO/2017/193594

A1

A PWM circuit duty ratio adjustment method and system for a blood pressure measurement apparatus. The PWM circuit duty ratio adjustment method for a blood pressure measurement apparatus comprises the following steps: when a blood pressure measurement apparatus is used, acquiring a real-time atmospheric pressure in a cuff (S10); calculating a duty ratio of a PWM circuit in the blood pressure measurement apparatus according to the real-time atmospheric pressure and a duty ratio-atmospheric pressure relation model (S20), wherein the duty ratio-atmospheric pressure relation model represents a functional relation between the duty ratio and the atmospheric pressure when a rising velocity of the atmospheric pressure in the cuff is constant; and adjusting a working duty ratio of the PWM circuit according to the duty ratio (S30). The PWM circuit duty ratio adjustment method and system for a blood pressure measurement apparatus are applicable to various kinds or types of blood pressure measurement apparatuses, have a relatively high adjustment effect, and ensure the working stability of a PWM circuit.

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GAO PINGDONG (CN)
ZHENG HONGTAO (CN)
LI SHIXING (CN)
LI GUOCHUN (CN)
LI YANFENG (CN)

PCT/CN2016/113116

November 16, 2017

December 29, 2016

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GUANGZHOU SHIYUAN ELECTRONICS CO LTD (CN)

H03K3/017; A61B5/022

CN106026978A	2016-10-12
CN102626308A	2012-08-08
CN104309415A	2015-01-28
CN102081410A	2011-06-01
US20110105917A1	2011-05-05

ADVANCE CHINA IP LAW OFFICE (CN)

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