| 摘要 |
Device for detecting the underinflation of a motor vehicle tire (1) serving also as a device for measuring the kinetic state of the wheel, characterized by the fact that it comprises in combination: a toothed wheel turning with the wheel (1) of the vehicle and whose electrical characteristics of at least one (6a) of the teeth (6) are modified by a pressure drop in one of the tires, an electromagnet (10) fixed to rotate and constituting an electromagnetic sensor in which the toothed wheel (4) generates a signal formed from successive pulses, and a computer (23) which computes the values of the successive periods, and which interprets their variation as an acceleration or deceleration or else as a state of underinflation of the tire according to the behavior of this variation.
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