Method for providing communication between ultrasonic sensor and control unit of parking assistance system of passenger car, involves selecting amplitude value based on information transmitted between sensor and control device

摘要

The method involves adjusting amplitude of an electric voltage resting against a data line (5) from a reference value to amplitude value, which is different from the reference value. The amplitude value is selected from two predetermined different amplitude values based on information transmitted between a sensor (4) and a control device (3) over the data line. A transmitting signal is emitted based on a transmission command of the sensor. Additional information is transmitted between the sensor and the control device. An independent claim is also included for a driver assistance system for a motor vehicle.