Abstract: A method of power management includes steps of: in response to receiving from a server host a sleep command, an expander first outputting a predetermined register value to a processing unit in a normal state, and then switching to a power-saving state and outputting an interrupt signal to the processing unit; the processing unit determining whether both the predetermined register value and the interrupt signal are received; and when it is determined that both the predetermined register value and the interrupt signal have been received, the processing unit controlling a power supply to output standby electricity, making the expander and the processing unit operate based on the standby electricity.

Abstract: A non-contact power supply device of an electronic lock includes a power supply unit and an electronic lock, and the power supply unit is oppositely provided with a power supply member and a power-receiving member. The power supply member is connected with a power source, able to produce a radio-frequency signal, while the power-receiving member can induce and receive the radio-frequency signal to form electronic energy to be supplied to the electronic lock for operation. Thus, the power supply member and the power-receiving member can carry out wireless signal transmission to have electronic energy supplied to the electronic lock for locking and unlocking a door, able to avoid the trouble that the battery unit of a conventional electronic lock must periodically replaced with a new one.

Abstract: A non-contact power supply device of an electronic lock includes a power supply unit and an electronic lock, and the power supply unit is oppositely provided with a power supply member and a power-receiving member. The power supply member is connected with a power source, able to produce a radio-frequency signal, while the power-receiving member can induce and receive the radio-frequency signal to form electronic energy to be supplied to the electronic lock for operation. Thus, the power supply member and the power-receiving member can carry out wireless signal transmission to have electronic energy supplied to the electronic lock for locking and unlocking a door, able to avoid the trouble that the battery unit of a conventional electronic lock must periodically replaced with a new one.