Patent AU-2020264370-B2 (AU)
Title: Non-contact key and control method thereof
Inventor: HUANG LIMING
IPC: H03K17/94
Filed: 2020-08-25
Granted: 2021-12-16
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(54) Title: CONTACTLESS KEY AND CONTROL METHOD THEREFOR 
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20 Distance detection module 
20 Fb 11 30 Signal processing module 
10 50, AA Key state feedback module 
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(57) Abstract: Disclosed herein are a contactless key and a control method therefor. The contactless key comprises at least one key 
unit; the at least one key unit comprises a sensing area expansion module, a distance detection module, and a signal processing module; 
the distance detection module is connected to the signal processing module; the sensing area expansion module is configured to adjust 
the sensing area of the distance detection module; the distance detection module is configured to detect the distance from an object 
located within the sensing area to the contactless key, generate a distance signal, and transmitthe distance signal to the signal processing 
module; and the signal processing module is configured to generate a key control signal according to the distance signal.
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