TYRE PRESSURE MONITORING TRANSPONDER MOUNTED ON A TYRE VALVE

摘要

PCT No. PCT/AU96/00099 Sec. 371 Date Aug. 25, 1997 Sec. 102(e) Date Aug. 25, 1997 PCT Filed Feb. 23, 1996 PCT Pub. No. WO96/26076 PCT Pub. Date Aug. 29, 1996A tire valve element assembly comprises a pressure sensing and transponder arrangement. The arrangement is mounted on a short valve element so as to extend axially from the short valve element and is sized to slidably fit within and be removable from a valve stem of a tire. The tire valve element assembly is adapted to be connected via an electrically conducting receptacle within the stem, so as to be a direct substitution for an existing in situ valve element in the tire valve stem. The arrangement is in fluid contact with the interior of the tire to sense the pressure within the tire when the short valve element is in situ. The arrangement, when in situ, is electrically connected to a conductive portion of the valve element via the receptacle to facilitate an antenna system for radio frequency communication with the arrangement.