Anordnung zum Übertragen von Signalen aus einer Einrichtung zum Überwachen des Reifendrucks an Fahrzeugrädern zu einem im Fahrzeug angeordneten Auswertegerät

摘要

An arrangement for transmitting signals from a device (3) for monitoring pressure in pneumatic tyres on the wheels (1) of motor vehicles. Preferably,the inventive arrangement is arranged inside the tyre, forming a structural unit with a valve and comprising a pressure sensor that measures the pressure in the pneumatic tyres and generates a pressure-measuring signal.The inventive arrangement also comprises a control circuit, a battery as a power source and a transmitter with a transmitting antenna. A pressure-measuring signal is transmitted by the transmitter in the form of a high frequency signal under the control of the control circuit. Said signal is sent to a central evaluation and control device (8) that is arranged in the motor vehicle (2). The central evaluation and control device (8) is connected to receiving antennae (4) via an HF. receiver with a demodulator that converts the HF signals thus received into low frequency signals (LF signals) and by means of electric lines (7). The receiving antennae (4) are associated with individual wheels (1) or groups of wheels (1) of the motor vehicle (2). A one-channel HF receiver (5) with a demodulator (6) is provided for each receiving antenna (4), whereby the electric lines (7) transmit LF signals instead of HF signals.