Sound reaction type force sensing abacus computation device and method
Title：
Sound reaction type force sensing abacus computation device and method
Application Number：
 200710175858
Application Date：
 2007/10/15
Announcement Date：
 2008/03/05
Pub. Date：
Publication Number：
 101135931
Announcement Number：
Grant Date：
Granted Pub. Date：
ApplicationType：
 Invention
State/Country：
 11[China|beijing]
IPC：
 G06F 3/01, G06F 3/16, G06C 1/00
Applicant(s)：
 Tsinghua University
Inventor(s)：
 Pan Xiaobin, Rao Peilun
Key Words：
 Sound reaction type, force sensing, abacus computation, device, method
Abstract：
 The apparatus uses PVDF piezoelectric thin film as the sensor to detect force signals; the lead-out wires from both ends are connected to the amplifier circuit; the thin film and wires are packed and are closely pasted on the surface of abacus balls; the wires passes through the small hole on the abacus balls to connect to the PCB under the abacus balls; the outputted charge signals are amplified by an amplifying circuit composed of two AD620 amplification chips, and are converted to digital signals by using a data collection board, and then are transmitted to a computer.
Claim：
Priority：
PCT：
LegalStatus：

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