Abstract: A SAW based tire pressure sensor assembly comprising a body having a tubular stud 1 formed on an end thereof which is engageable in an inflation tube formed in a tire inflation valve 3 so as to fasten the body to the valve 3. A through passage extends through the stud 1 into said body and is in fluid communication with the atmosphere surrounding the assembly by means of apertures 2 in the sides of the body, thereby providing a fluid coupling between an inflation duct of the inflation valve 3 and the atmosphere surrounding the body. A SAW based pressure sensor is mounted within said body so as to be in fluid communication with the atmosphere surrounding the body, and an antenna 4 is connected to the sensor to enable remote interaction therewith. A grounding plate 5 connected to the antenna is sandwiched between the assembly and has arms which engage against the inner surface of the wheel so as to enhance the sensor antenna earth.

Abstract: A method is provided for measuring torque in a shaft of a drive line including a disc coupling component such as a flexplate 1 or a flanged coupling 13, as well as a drive coupling system for carrying out the method. The disc coupling component 1, 13 is connected between a drive input 4 and a drive output so that all torque transmitted between the input and output passes through said component. The disc coupling component 1, 13 has a radially extending portion, which may include a plurality of spokes 7, to which is attached a SAW based strain sensor which communicates with a stationary coupler 3 fastened to an engine block 5 for wireless transmission of data from the sensor, the strain sensor measuring the strain in the disc coupling component 1, 13 from which the torque carried in the input shaft 4 may be calculated.

Abstract: A method is provided for measuring torque in a shaft of a drive line including a disc coupling component such as a flexplate 1 or a flanged coupling 13, as well as a drive coupling system for carrying out the method. The disc coupling component 1, 13 is connected between a drive input 4 and a drive output so that all torque transmitted between the input and output passes through said component. The disc coupling component 1, 13 has a radially extending portion, which may include a plurality of spokes 7, to which is attached a SAW based strain sensor which communicates with a stationary coupler 3 fastened to an engine block 5 for wireless transmission of data from the sensor, the strain sensor measuring the strain in the disc coupling component 1, 13 from which the torque carried in the input shaft 4 may be calculated.

Abstract: A SAW based tyre pressure sensor assembly comprising a body having a tubular stud 1 formed on an end thereof which is engageable in an inflation tube formed in a tyre inflation valve 3 so as to fasten the body to the valve 3. A through passage extends through the stud 1 into said body and is in fluid communication with the atmosphere surrounding the assembly by means of apertures 2 in the sides of the body, thereby providing a fluid coupling between an inflation duct of the inflation valve 3 and the atmosphere surrounding the body. A SAW based pressure sensor is mounted within said body so as to be in fluid communication with the atmosphere surrounding the body, and an antenna 4 is connected to the sensor to enable remote interaction therewith. A grounding plate 5 connected to the antenna is sandwiched between the assembly and has arms which engage against the inner surface of the wheel so as to enhance the sensor antenna earth.