Device on a wheeled vehicle with a pneumatic tire for use in a tire pressure monitoring system

摘要

There is described an arrangement on vehicles equipped with wheels ( 1 ) with pneumatic tires, having an evaluation and control unit ( 8 ) arranged in the vehicle ( 2 ) and one or more receiving antennas ( 4 ), that are assigned to individual wheels ( 1 ) or groups of wheels ( 1 ) of the vehicle ( 2 ) and are connected to the evaluation and control unit ( 8 ) via an RF receiver ( 5 ) comprising a demodulator ( 6 ), for use in a tire-pressure monitoring system in which a unit ( 3 ), that is mounted on the respective wheel ( 1 ) and that comprises a pressure sensor for measuring the pressure in the pneumatic tire and for generating an electric pressure-measurement signal, comprises a control circuit and a transmitter with a sending antenna for sending out, under the control of the control circuit, the pressure-measuring signal or a signal derived therefrom in the form of a radio-frequency signal. The invention provides that each receiving antenna ( 4 ) has assigned to it a separate RF receiver ( 5 ) in combination with a demodulator ( 6 ), a circuit arrangement ( 7 ) for the generation of a digital electric identification signal characteristic of the mounting location of the respective receiving antenna ( 4 ), and a BUS interface ( 19 ), that the evaluation and control unit ( 8 ) comprises a BUS interface ( 18 ), that the two BUS interfaces ( 18, 19 ) are connected one to the other by a BUS ( 17 ), for which purpose a plug-in connector ( 21 ) is provided which is connected to the BUS ( 17 ) by a first connector element ( 22 ) and to the BUS interface ( 19 ) of the RF receiver ( 5 ) by a second connector element ( 23 ), and that the first connector element ( 22 ) of the plug-in connector is designed so as to provide an identifier in electric/mechanical form and to supply it to the circuit arrangement ( 7 ) provided on the side of the RF receiver ( 5 ), through its connection to the second connector element ( 23 ), for generation of the digital electric identification signal characteristic of the identifier of the first connector element ( 22 ).