US 11,686,124 B2
Method and system for operating key and lock core with wireless charging
Qing Chang, Zhuhai (CN); Hongwei Qiao, Zhuhai (CN); and Jing Zhang, Zhuhai (CN)
Assigned to Zhuhai Unitech Power Technology Co., Ltd., Zhuhai (CN)
Filed by Zhuhai Unitech Power Technology Co., Ltd., Zhuhai (CN)
Filed on Jan. 3, 2020, as Appl. No. 16/734,137.
Claims priority of provisional application 62/798,971, filed on Jan. 30, 2019.
Prior Publication US 2020/0240174 A1, Jul. 30, 2020
Int. Cl. E05B 47/00 (2006.01); G07C 9/00 (2020.01); H01F 27/24 (2006.01); H02J 50/10 (2016.01); H01F 27/28 (2006.01)
CPC E05B 47/0006 (2013.01) [E05B 47/0012 (2013.01); G07C 9/00182 (2013.01); H01F 27/24 (2013.01); H01F 27/28 (2013.01); H02J 50/10 (2016.02); E05B 2047/0058 (2013.01); E05B 2047/0063 (2013.01); E05B 2047/0067 (2013.01)] 16 Claims
OG exemplary drawing
 
1. An electrical key for locking and unlocking an electrical lock, comprising:
an energy-transfer unit comprising a magnetic core and a coil wrapped around the magnetic core;
a pulse generator configured to generate a first pulse sequence comprising alternating pulse on and pulse off cycles and a second pulse sequence comprising a continuous pulse train;
a modulator driver configured to modulate a voltage or current on the coil wrapped around the magnetic core using the generated first pulse sequence, and wherein the modulator driver is further configured to modulate the voltage or current on the coil using the second pulse sequence to facilitate transferring of energy from the electrical key to the electrical lock;
a measurement module configured to measure a current or voltage on the coil excited by the voltage or current modulated using the first pulse sequence;
a key-position determination module configured to determine a relative position between the electrical key and the electrical lock based on the measured current or voltage; and
a communication interface for communicating with the electrical lock to facilitate the locking and unlocking of the electrical lock.