Method for determining the direction of a relative speed between a transmission inductance and a reception inductance, method for parking a vehicle and system for carrying out a method

摘要

Method for determining the direction of a relative speed between a transmission inductance and a reception inductance, a periodic signal is applied to the transmission inductance, the receiving inductance having two partial windings and the voltages induced in the partial windings being detected and evaluated, the direction being determined from the change in the phase difference between the two induced voltages caused by the movement of the vehicle, the phase difference being a clear, in particular monotonous, in particular strictly monotonous, function of the relative position of the receiving inductance with respect to the position of the transmitting inductance, in which when the phase difference increases and the amplitude of one or both induced voltages increases, an approximation to the position of maximum coupling is determined and displayed, - When the phase difference increases and the amplitude of one or both of the induced voltages decreases, a removal from the position of maximum coupling is determined and displayed - When the phase difference decreases and the amplitude of one or both of the induced voltages increases, an approach to the position of maximum coupling is determined and displayed - If the phase difference and the amplitude of one or both of the induced voltages decrease, a removal from the position of maximum coupling is determined and displayed.