Identification transmitter i.e. check card, for use in locking system of motor car to identify authorized person to unlock car, has receiving unit switched-off when motion sensor senses immobility of transmitter during minimum time duration

摘要

The transmitter (1) has a receiving unit (10) for receiving a transmitting signal, which is sent from a transmission receiving module to a vehicle. A microcontroller (11) controls the receiving unit. An energy storage unit (12) i.e. button cell battery, provides power supply to the receiving unit and the microcontroller. A motion sensor (13) senses a movement of the transmitter. The receiving unit is switched-off by the microcontroller when the motion sensor senses an immobility of the transmitter during minimum time duration. An independent claim is also included for a method for operating a locking system of a vehicle using an identification transmitter.