System for remotely controlling the position of a land vehicle door wherein hand-held and mobile communication devices of the system communicate via inductive coupling
Abstract:
A system for remotely controlling the position of a land vehicle door includes a mobile communication device operative to produce an excitation signal in the form of a first, short-range, electromagnetic field within a first range of the mobile device and a hand-held communication device, such as a key fob, operative to produce an excitation signal in the form of a second, short-range, electromagnetic field when the hand-held device is located within the first range. Control logic is coupled to the devices. The control logic is operative to detect when a pedestrian carrying an authorized hand-held device is located within the first range and to generate a door-opening command signal when the authorized device is located within the first range.
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