US Patent 9378596 Door access control system

A door access control system (9) includes a door lock (10) mounted to a door (435). A door lock controller (611) is mounted in the door (435) and is electrically connected to the door lock (10). A wireless charging device (511) is electrically connected to the door lock controller (611). A main control unit (659) is provided for operating the door lock controller (611). At least one passive door opening unit (673) is provided to conduct induction with the door lock controller (611) to unlock the door lock (10).