Transense Technologies, Plc

Victor Alexandrovich Kallnin

Raymond David Lohr

John Peter Beckley

Arthur John Leigh

David Daniel George Vile

George Edward Andrew Bown

A combined pressure and temperature sensor comprising a tubular memberof circular cross section having a closed end and an open end, the open end, in use, connecting to a pressurized environment such that the interior of the tubular member is exposed to the pressure, a flat or preferably a symmetrical distribution of flatsbeing formed on the outer cylindrical surface of the tubular member, and a sensor elementmounted on at least one said flat, which sensor elementis sensitive to the strains in the tubular wall of the tubular memberresulting the pressure in the interior thereof and the temperature of said tubular member.

High pressure sensor

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.

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Headington, United Kingdom

Victor Alexandrovich Kallnin