Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
PIEZOELECTRIC DEVICE, FORCE SENSOR, AND BIOLOGICAL INFORMATION ACQUISITION DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/065454
Kind Code:
A1
Abstract:
This piezoelectric device comprises: a first piezoelectric sensor including a first internal conductor, a first piezoelectric element, and a first external conductor; a second piezoelectric sensor including a second internal conductor, a second piezoelectric element, and a second external conductor; and a differential signal composing unit which includes a pair of differential input terminals. When an external force is applied to the first piezoelectric element, the first piezoelectric sensor generates a first voltage in the first internal conductor with respect to the first external conductor in response to a displacement of the first piezoelectric element by the external force. When an external force is applied to the second piezoelectric element, the second piezoelectric sensor generates a second voltage, which differs in positive and negative polarity from the first voltage, in the second internal conductor with respect to the second external conductor in response to a displacement of the second piezoelectric element by the external force. The first internal conductor is electrically connected to one differential input terminal. The second internal conductor is electrically connected to the other differential input terminal. The differential signal composing unit composes a differential signal on the basis of a first signal input to the one differential input terminal and a second signal input to the other differential input terminal.

More Like This:
JP2015087283FORCE DETECTION DEVICE, ROBOT, ELECTRONIC COMPONENT CONVEYANCE DEVICE, ELECTRONIC COMPONENT INSPECTION DEVICE, AND COMPONENT PROCESSING DEVICE
WO/2013/061356SLIP SENSOR
JP2012173079SENSOR ELEMENT, SENSOR DEVICE, FORCE DETECTION DEVICE, AND ROBOT
Inventors:
MARUKO NOBUHIRO (JP)
YOSHIDA MITSUNOBU (JP)
OZAKI KATSUTOSHI (JP)
Application Number:
PCT/JP2021/035189
Publication Date:
March 31, 2022
Filing Date:
September 24, 2021
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
MITSUI CHEMICALS INC (JP)
International Classes:
G01L1/16; H01L41/087; H01L41/113; H01L41/193
Domestic Patent References:
WO2019126477A22019-06-27
WO2017111108A12017-06-29
WO2010104196A12010-09-16
WO2013054918A12013-04-18
WO2013089148A12013-06-20
Foreign References:
JPS562800A1981-01-13
JPH10132669A1998-05-22
JP4934235B22012-05-16
JPS5996123A1984-06-02
JPH0733861A1995-02-03
US2668182A1954-02-02
US2941956A1960-06-21
JPS4733279B11972-08-24
JP4084953B22008-04-30
JP2011256337A2011-12-22
JP2020161350A2020-10-01
Other References:
J.0RG.CHEM., vol. 28, 1963, pages 2069 - 2075
CHEMICAL REVIEW, vol. 81, no. 4, 1981, pages 619 - 621
Attorney, Agent or Firm:
TAIYO, NAKAJIMA & KATO (JP)
Download PDF:
View/Download PDF      PDF Help



 
Previous Patent: PAYMENT SYSTEM

Next Patent: STRUCTURE, METHOD FOR PRODUCING STRUCTURE, AND ELECTROCHEMICAL DEVICE