ULTRASOUND SENSOR AND METHOD: Appliance for measurement of pressures, variation in sound pressures, magnet fields, acceleration, vibration and composition of gas

Heikki Seppä (Inventor), Teuvo Sillanpää (Inventor)

Research output: PatentResearch

Abstract

The invention relates to a sensor (1) and a method for measuring pressure, variation in sound pressure, a magnetic field, acceleration, vibration, or the composition of a gas. The sensor (1) comprises an ultrasound transmitter (2), and a cavity (4) arranged in connection with it. According to the invention, the sensor (1) comprises a passive sensor element (3, 3') located at the opposite end of the cavity (4) to the ultrasound transmitter (2), the distance of which from the ultrasound transmitter (2) is selected in such a way that the resonance condition is met at the ultrasound frequency used, the ultrasound transmitter (2) comprises a light-construction diaphragm oscillator (9), which is thus well connected to the surrounding medium, and the sensor includes means for measuring the interaction between the ultrasound transmitter (2) and the cavity (4).

Patent family as of 6.9.2021
CN101970339 A 20110209 CN200880119367 20081204     
 CN101970339 B 20140416 CN200880119367 20081204      
DE602008060703 D1 20190808 DE200860060703T 20081204      
EP2215005 A1 20100811 EP20080856883 20081204      
EP2215005 A4 20160914 EP20080856883 20081204      
EP2215005 B1 20190717 EP20080856883 20081204      
FI20075879 A0 20071205 FI20070005879 20071205      
FI20085563 A 20090606 FI20080005563 20080606      
FI20085563 A0 20080606 FI20080005563 20080606      
JP2011514505 T2 20110506 JP20100536498T 20081204      
JP5222955 B2 20130626 JP20100536498T 20081204      
US2010275675 AA 20101104 US20080746342 20081204      
US8850893 BB 20141007 US20080746342 20081204      
WO09071746 A1 20090611 WO2008FI50709 20081204

Link to current patent family on right 

Original languageEnglish
Patent numberEP2215005
IPCG01L 11/ 06 A I
Priority date4/12/08
Publication statusPublished - 11 Aug 2010
MoE publication typeNot Eligible

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