Method and device for assigning a wheel unit to its wheel position

A method for assigning a wheel unit to a wheel position on a motor vehicle, which comprises:

• providing a first transmissing unit and an evaluation unit on the motor vehicle, assigning the evaluation unit a first receiving unit, and providing the wheel unit with a second transmitter unit;
• providing the wheel unit with a second receiving unit for receiving a signal emitted by the first transmission unit, and wherein the evaluation unit has a characteristic value stored therein representing an assignment of the transmission path from the first transmission unit to a wheel position;
• transmitting a given signal with the first transmission unit;
• measuring an intensity of the given signal at a location of the first transmission unit;
• sending, with the first transmission unit, a message containing the intensity of the given signal at the location of the first transmission unit;
• measuring an intensity of the given signal at a location of the second receiving unit;
• determining a characteristic value from a logical combination of the intensity measured at the location of the first transmitter unit and the intensity measured at the location of the second receiving unit;
• sending a message from the second transmission unit to the evaluation unit that can be distinguished from messages sent by other wheel units, the message containing the intensity of the signal measured at the location of the second receiving unit or of the characteristic value;
• and
• applying the assignment to the characteristic value determined in the determining step.

An assembly for assigning a wheel unit to a wheel position on a motor vehicle, comprising:

• an evaluation unit and a first transmission unit disposed on the motor vehicle, and a first receiving unit connected to said evaluation unit;
• the wheel unit having a second receiving unit disposed to receive a signal emitted by said first transmission unit and a second transmission unit;
• and
• said evaluation unit having stored therein a characteristic value representing an assignment of a transmission path from said first transmission unit to the wheel position.