Patent ID: 9671477
Date: 2017-06-06
CPC Classifications: G01D,G01R

Claim:
1. An inductive sensor for a motor vehicle, comprising: a field coil designed to form an electromagnetic field, at least one measuring coil for measuring a magnetic field and designed to provide an output signal representative of the position of a metal target in the magnetic field formed by the field coil, at least two electric circuits connected simultaneously in parallel to the terminals of the field coil, each electric circuit comprising an inverter element and a capacitive element, and forming, together with said field coil, an electric oscillator designed to form an AC voltage at the terminals of said field coil by means of electric resonance, said electric oscillators being of the same resonance frequency, and functioning simultaneously, a first inverter element of a first electric circuit is integrated in a first integrated circuit, a second inverter element of a second electric circuit integrated in a second integrated circuit, each integrated circuit is connected to the terminals of the field coil, the first integrated circuit is connected to two measuring coils and to a control circuit, the second integrated circuit is connected to two other measuring coils and to the control circuit, and each electric circuit transmits a signal to the control circuit, said signal corresponding to the information concerning simultaneous function of the electric oscillators.