The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 13, 2011
Filed:
Jun. 23, 2009
Raymond David Lohr, Bucks, GB;
Victor Alexandrovich Kallnin, Headington, GB;
John Peter Beckley, Kidlington, GB;
Arthur John Leigh, Banbury, GB;
George Edward Andrew Bown, Buckingham, GB;
David Daniel George Vile, Bicesler, GB;
Raymond David Lohr, Bucks, GB;
Victor Alexandrovich Kallnin, Headington, GB;
John Peter Beckley, Kidlington, GB;
Arthur John Leigh, Banbury, GB;
George Edward Andrew Bown, Buckingham, GB;
David Daniel George Vile, Bicesler, GB;
Transense Technologies PLC, Bicester, Oxon, GB;
Abstract
Aspects of the present invention are directed to using surface acoustic wave (SAW) sensors mounted on a disc coupling component in a powertrain to measure the torque generated by an automobile engine. The sensor may be positioned and oriented on the disc coupling component so that the phase velocities of SAWs propagating through active elements of the SAW sensors are aligned with principal strain components due to torque in the disc coupling component. The torque may be calculated by determining the difference between resonant frequencies of the active elements to suppress common-mode interference factors. In addition, SAW resonant frequencies may be communicated in a non-contacting manner by utilizing rotary and stationary couplers employing radio frequency (RF) signals. Moreover, SAW sensors may be activated and interrogated by employing targeted RF pulses having different carrier frequencies at or near respective resonant frequencies of each resonator in a SAW sensor.