SYSTEM FOR MEASURING THE PRESSURE OF A TYRE OF AN AUTOMOBILE

摘要

The invention relates to a system for measuring the pressure of a tyre (100) of an automobile that comprises a pressure sensor (101) arranged in or on said automobile tyre. According to the invention, the system essentially further includes: an electric generator (201) adapted for powering the pressure sensor (101) by radiofrequency, and comprising an electromechanical transducer comprising at least one layer of an electro-active polymer material (10) arranged between at least two electrodes (12, 12', 14, 14') arranged opposite each other on either side of the layer of electro-active polymer material, wherein the layer and the electrodes are integrated into a bellow (2) made of a flexible material that surrounds a link between two non-aligned shafts (4, 6) and is rotatingly driven with the latter, the layer of electro-active polymer material and the electrodes extending longitudinally relative to the shafts.