PVdF压电薄膜脉搏传感器的研制_王国力.pdf

2004 12 　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　4 Design and Implementation of the Three-Point PVdF Piezo-Film Sphygmo-Transducer WANG Guo-li, ZHAO Zi-y ing, BAI Jin-xing (School of Inf ormation Science and Engneering, Shandong Univer ity , Jinan 250100, China) Abstract :　A kind of three-point PVdF has been developed, it can imitate the tradition Chinese clinical pulse diagno- sis by measuring threeparts “CU ”,“GUA ”, “CHI”of the pulsewave.This paper analyses the principleof the PVdF Piezo-Film and electric charge amplifier from anew viewpoint.The system consists of a linearization revisary circuit of the electric charge amplifier and the signal processing circuits, It considers the plasticworking of the pulsewave form and suppression of the noise, increases themeasure sensitivity, and solves the problem of the pulse wave distortion. Key words:　PVdF;linearization;electric charge amplifier;pulse transducer design PVdF ① 王国力, 赵子婴, 白金星 (, 　　250100) 、、PVdF , : PVdF 。 , , , , 。 PVdF;;; : :TP212.3　　　:A　　　:1004-1699(2004)04-0688-05 　　2600 , 1　 。、 。, , 1.1　 , , 。, 、 PVdF(), [1] 。, PVdF , : ①　(d =20 pC/ ), , 33 , , 。 10 , 、、, 、、 g =174 。 , , 。 ②　, , PVdF 。 , 。 ① :2004-06-16 :(1975-), , , , wa