Title:
PARASITIC WIRELESS SENSOR, MEASURING SYSTEM USING THE SAME, AND DETECTION METHOD OF MEASURING SYSTEM
Document Type and Number:
Japanese Patent JP2017096841
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a parasitic wireless sensor capable of improving sensor sensitivity, a measuring system using it, and a measuring system.SOLUTION: A first comb-shaped electrode 2 placed on a piezoelectric substrate 1 converts a received electric signal into a surface acoustic wave. The surface acoustic wave propagates and reaches a second comb-shaped electrode. The second comb-shaped electrode 3 wirelessly transmits the surface acoustic wave as a response signal from a second antenna 6 by changing its signal level according to a change in a physical quantity of a surrounding environment by an impedance change element 5. By monitoring this response signal, the change in the physical quantity can be detected.SELECTED DRAWING: Figure 1
Inventors:
OZAKI MASAYUKI
NARA MAKOTO
NARA MAKOTO
Application Number:
JP2015230738A
Publication Date:
June 01, 2017
Filing Date:
November 26, 2015
Export Citation:
Assignee:
NEW JAPAN RADIO CO LTD
International Classes:
G01D21/02; G01N29/02; G08C17/02
Domestic Patent References:
| JP2015145808A | 2015-08-13 | |||
| JP2015087786A | 2015-05-07 | |||
| JP2005092490A | 2005-04-07 | |||
| JP2012008122A | 2012-01-12 |
Foreign References:
| US20060283252A1 | 2006-12-21 |