Wirelessly powered door lock systems and methods
First Claim
1. An apparatus comprising:
- an electronic lock module;
a rechargeable battery electrically coupled to the electronic lock module;
an electronic control module configured to generate a wireless charging link between the electronic control module and the electronic lock module,wherein the electronic control module is configured to transmit a wireless charging signal to the electronic lock module via the wireless charging link, andwherein the electronic lock module is configured to use the wireless charging signal to charge the rechargeable battery; and
an adjustable oscillator configured to vary the transmission frequency of the wireless charging signal over a predetermined transmission frequency range.
1 Assignment
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Accused Products
Abstract
Example wireless power transfer systems and methods are described. In one implementation, a rechargeable battery is electrically coupled to an electronic lock module. An electronic control module that is physically separate from the electronic lock module generates a wireless charging link between the electronic control module and the electronic lock module. The electronic control module transmits a charging signal to the electronic lock module via the wireless charging link, and the electronic lock module uses this charging signal to charge the rechargeable battery. The transmission frequency of the charging signal can be varied over a predetermined frequency range by a numerically controlled oscillator.
40 Citations
39 Claims
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1. An apparatus comprising:
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an electronic lock module; a rechargeable battery electrically coupled to the electronic lock module; an electronic control module configured to generate a wireless charging link between the electronic control module and the electronic lock module, wherein the electronic control module is configured to transmit a wireless charging signal to the electronic lock module via the wireless charging link, and wherein the electronic lock module is configured to use the wireless charging signal to charge the rechargeable battery; and an adjustable oscillator configured to vary the transmission frequency of the wireless charging signal over a predetermined transmission frequency range. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An apparatus comprising:
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an electronic lock module; a rechargeable battery electrically coupled to the electronic lock module; an electronic control module configured to generate a wireless charging link between the electronic control module and the electronic lock module, wherein the electronic control module is configured to transmit a wireless charging signal to the electronic lock module via the wireless charging link, and wherein the electronic lock module is configured to use the wireless charging signal to charge the rechargeable battery; an adjustable oscillator configured to vary a transmission frequency of the wireless charging signal over a predetermined transmission frequency range; a memory unit electrically coupled to the electronic lock module and configured to store authentication data for designated users; a bidirectional wireless communication link configured to couple the electronic control module and the electronic lock module; and wherein the electronic lock module is configured to control a lock to cause it to be in a selected one of a locked state and an unlocked state. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A method comprising:
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generating a charging signal used to wirelessly charge a rechargeable battery; varying, using an adjustable oscillator, a transmission frequency of the charging signal; generating a feedback signal based on the power of the received charging signal; transmitting, over a wireless communications link, the feedback signal; receiving the feedback signal transmitted over the wireless communications link; determining, using one or more received feedback signals, the transmission frequency of the charging signal at which the received power of the charging signal is maximum; and transmitting the charging signal at the transmission frequency at which the received power of the charging signal is maximum. - View Dependent Claims (28)
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29. An apparatus, comprising:
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an electronic lock module configured to be mounted to a door mounted in a door frame; a rechargeable battery configured to be electrically coupled to power the electronic lock module; an electronic control module configured to be mounted off of the door and physically separate from the electronic lock module, wherein the electronic control module is configured to provide power to a wireless charging link between the electronic control module and the electronic lock module, wherein the electronic control module is configured to transmit a wireless charging signal from the electronic control module to the electronic lock module over the wireless charging link, and wherein the electronic lock module is configured to use the wireless charging signal to charge the rechargeable battery; an adjustable oscillator configured to vary the transmission frequency of the wireless charging signal over a predetermined transmission frequency range; a lock configured to be mounted to the door, wherein the lock is coupled to the electronic lock module and configured to be set to a locked or an unlocked state by the electronic lock module; and a bi-directional data communications link configured to transmit data signals in a first direction from the electronic control module to the electronic lock module using a first electromagnetic signal having a first radio frequency, and in a second direction from the electronic lock module to the electronic control module using a second electromagnetic signal having a second radio frequency, wherein the second radio frequency is different from the first radio frequency. - View Dependent Claims (30, 31, 32)
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33. A method for controlling the lock state of a door mounted in a door frame, the door having a lock configured to be set to a locked state or an unlocked state, a lock control module configured to set the state of the lock to locked or unlocked, the lock control module electronically coupled to and powered by a rechargeable battery, the method comprising:
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receiving a charging signal wirelessly over a wireless charging link from an electronic control module configured to be mounted off of the door and physically separate from the electronic lock module; using the received charging signal to charge the rechargeable battery; using a bi-directional data communications link configured to transmit first data signals in a first direction from the electronic control module to the electronic lock module using a first electromagnetic signal having a first radio frequency, and second data signals in a second direction from the electronic lock module to the electronic control module using a second electromagnetic signal having a second radio frequency, the second radio frequency being different from the first radio frequency; and using an adjustable oscillator to vary a transmission frequency of the charging signal over a predetermined transmission frequency range. - View Dependent Claims (34, 35, 36, 37, 38, 39)
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Specification