Device for detecting, by induction, intention of locking or unlocking an opening element of a motor vehicle with primary and secondary coils

A device for detecting an intention of a user to lock or unlock an opening element of a motor vehicle, the device being intended to be integrated into an opening element handle or frame and consisting of a housing containing an element that is elastically deformable along a predetermined axis comprising a region of contact with the handle, the device comprising:

• a printed circuit board,
• a voltage source and
• at least one emitter primary coil,
• the deformable element being associated with an amagnetic metal target having a planar surface, a variation in the position of the target moving along the predetermined axis occurring under pressure from a hand of the user on the opening element handle or frame,
• wherein the primary coil has turns wound in a plane parallel to a plane of the surface of the target, at least one receiver secondary coil that receives a magnetic field and a voltage induced by said at least one primary coil and is located facing said at least one primary coil with its turns wound in a plane parallel to the plane of the turns of said at least one primary coil and with the target at least partially intercalated between said at least one primary coil and said at least one secondary coil when pressure from the user is applied to the opening element handle or the frame, a variation in the induced magnetic field received by said at least one secondary coil being detected by measurement means for measuring a parameter resulting from the voltage induced in the secondary coil when pressure from a hand of the user is applied to the opening element handle or frame.