EP 1828736 A1 20070905 - POWER-FREE/WIRELESS SENSOR BASED ON SURFACE ACOUSTIC WAVE WITH ENERGY COLLECTING TYPE
Title (en)
POWER-FREE/WIRELESS SENSOR BASED ON SURFACE ACOUSTIC WAVE WITH ENERGY COLLECTING TYPE
Title (de)
STROMLOSER/DRAHTLOSER SENSOR AUF DER BASIS VON OBERFLÄCHENWELLEN MIT ENERGIESAMMELTYP
Title (fr)
CAPTEUR SANS ELECTRICITE/SANS FIL FONCTIONNANT SUR LA BASE D'UNE ONDE ACOUSTIQUE SUPERFICIELLE AVEC DISPOSITIF DE TYPE COLLECTEUR D'ENERGIE
Publication
Application
Priority
- KR 2005001280 W 20050503
- KR 20040101500 A 20041204
Abstract (en)
[origin: WO2006059822A1] A power-free/wireless sensor based on a surface acoustic wave with an energy collecting type comprises: an energy converting unit for converting mechanical energy generated by changes of peripheral physical environment into electric energy; an energy storing unit for rectifying and storing the electric energy generated from the energy converting unit; a pulse generating unit for receiving the electric energy stored in the energy storing unit to output a RF signal; a sensing unit for sensing an externally applied pressure; and a SAW transponder for receiving the RF signal from the pulse generating unit to output a surface acoustic wave, varying the wave acoustic wave depending on the pressure applied to the sensing unit to output the varied surface acoustic wave as the RF sensor signal. The power-free/wireless sensor performs a sensing operation without external power supply and transmits sensed data wirelessly to a long distance. As a result, the power-free/wireless sensor coincides with a tendency of miniaturizing, intelligent and wireless sensors, and is semi-permanently used after installation without maintenance.
IPC 8 full level
G01L 11/04 (2006.01); H10N 30/20 (2023.01); H10N 30/30 (2023.01); H10N 30/85 (2023.01); H10N 30/853 (2023.01)
CPC (source: EP KR)
G01L 9/0025 (2013.01 - EP); G01L 11/00 (2013.01 - KR); G01L 11/04 (2013.01 - KR); G05D 19/00 (2013.01 - KR); H04Q 9/00 (2013.01 - KR)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2006059822 A1 20060608; EP 1828736 A1 20070905; EP 1828736 A4 20071212; JP 2008522184 A 20080626; JP 4856652 B2 20120118; KR 100600807 B1 20060718; KR 20060062604 A 20060612
DOCDB simple family (application)
KR 2005001280 W 20050503; EP 05740839 A 20050503; JP 2007544253 A 20050503; KR 20040101500 A 20041204