Title: Pulsating pressure sensor
Application Number: 200610114167 Application Date: 2006.10.31
Publication Number: 1945248 Publication Date: 2007.04.11
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: G01L1/16;G01L9/08;G01L19/06;H01L41/087
Applicant(s) Name: Beijing Information Engineering College Address:
Inventor(s) Name: Wang Likun;Du Hongliang;Wei Bing;Qin Lei
Attorney & Agent: jiaxiao ling
Abstract:
    The present invention provides one kind of pulsating pressure sensor and belongs to the field of piezoelectric pressure sensor. The pulsating pressure sensor includes one tubby metal casing, one circuit covering plate in the top of the casing to form one shielding cavity together with the casing, one sensing element of piezoelectric chip adhered to the inside bottom of the casing and one amplifier with input connected electrically to the signal pole of the piezoelectric chip. When some pulsating pressure is acted onto the bottom of the casing, the piezoelectric chip produces deformation and generates charge, which is amplified and converted into output voltage. The present invention has the features of high sensitivity, high antijamming capacity, small size, low cost and other features, and may be applied widely in detecting heart sound, pulse, vibration, impact, acceleration, etc.
Time: 6
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