Methods and systems for powerline and radio frequency communications
First Claim
1. A battery-powered apparatus operating remotely from a powerline and configured to interface with a mesh network, the apparatus comprising:
- a first antenna configured to wirelessly detect a presence of a first radio frequency (RF) signal having a first frequency, the presence of the first RF signal indicates that a first message is encoded onto a powerline, wherein the first antenna is electrically disconnected from the powerline;
memory storing an assigned address and a wake-up number, wherein the memory is electrically disconnected from the powerline;
a second antenna configured to detect a second RF signal having a second frequency different than the first frequency;
a third antenna configured to detect an electromagnetic signal generated by an alternating current of the powerline;
a zero-crossing detector operably coupled to the third antenna and configured to detect zero crossings of the powerline based on the electromagnetic signal, the zero-crossing detector further configured to count the detected zero crossings of the powerline;
a computer processor operably coupled to the memory and configured to wake up from an inactive state upon receipt of the presence of the first RF signal, to receive a second message comprising a device address via the second RF signal, and to determine whether the device address of the second message is the assigned address, the computer processor operably coupled to the zero-crossing detector and further configured to wake up from the inactive state when the count equals the wake-up number, the computer processor returning to the inactive state to save power when the device address of the second message is not the assigned address, wherein the computer processor is electrically disconnected from the powerline; and
a power supply comprising a battery and configured to supply power, the power supply electrically connected to the memory and the computer processor.
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Accused Products
Abstract
Disconnected from the powerline, a battery-powered receiver is configured to conserve power. The receiver communicates information between a local controller and a communication network that uses the powerline and a radio frequency (RF) band to propagate messages. An antenna wirelessly detects the presence of the powerline carrier signal that radiates into free space, which indicates a first message encoded onto the powerline. A computer processor wakes up from an inactive state based on the presence of the carrier signal and receives a second message via a second RF signal having a different frequency than the powerline carrier signal, and determines whether the device address in the second message is the assigned address of the receiver. If the message is not addressed to the receiver, the receiver returns to an inactive state.
46 Citations
20 Claims
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1. A battery-powered apparatus operating remotely from a powerline and configured to interface with a mesh network, the apparatus comprising:
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a first antenna configured to wirelessly detect a presence of a first radio frequency (RF) signal having a first frequency, the presence of the first RF signal indicates that a first message is encoded onto a powerline, wherein the first antenna is electrically disconnected from the powerline; memory storing an assigned address and a wake-up number, wherein the memory is electrically disconnected from the powerline; a second antenna configured to detect a second RF signal having a second frequency different than the first frequency; a third antenna configured to detect an electromagnetic signal generated by an alternating current of the powerline; a zero-crossing detector operably coupled to the third antenna and configured to detect zero crossings of the powerline based on the electromagnetic signal, the zero-crossing detector further configured to count the detected zero crossings of the powerline; a computer processor operably coupled to the memory and configured to wake up from an inactive state upon receipt of the presence of the first RF signal, to receive a second message comprising a device address via the second RF signal, and to determine whether the device address of the second message is the assigned address, the computer processor operably coupled to the zero-crossing detector and further configured to wake up from the inactive state when the count equals the wake-up number, the computer processor returning to the inactive state to save power when the device address of the second message is not the assigned address, wherein the computer processor is electrically disconnected from the powerline; and a power supply comprising a battery and configured to supply power, the power supply electrically connected to the memory and the computer processor. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A battery-powered apparatus operating remotely from a powerline and configured to interface with a mesh network, the apparatus comprising:
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a first antenna configured to wirelessly detect a presence of a first radio frequency (RF) signal haying a first frequency, the presence of the first RF signal indicates that a first message is encoded onto a powerline, wherein the antenna is electrically disconnected from the powerline; memory storing an assigned address, wherein the memory is electrically disconnected from the powerline; a second antenna configured to detect a second RF signal having a second frequency different than the first frequency; a third antenna configured to detect an electromagnetic signal generated by the alternating current of the powerline; and a zero-crossing detector operably coupled to the third antenna and configured to detect the zero crossings of the powerline based on the electromagnetic signal; a computer processor operably coupled to the memory and to the zero-crossing detector, and configured to wake up from an inactive state based at least in part on the presence of the first RF signal and the detected zero crossings of the powerline, the computer processor further configured to receive a second message comprising a device address via the second RF signal and to determine whether the device address of the second message is the assigned address, the computer processor returning to the inactive state to save power when the device address of the second message is not the assigned address, wherein the computer processor is electrically disconnected from the powerline; and a power supply comprising a battery and configured to supply power, the power supply electrically connected to the memory and the computer processor. - View Dependent Claims (8, 9, 10, 11)
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12. A method to conserve power and interface with a mesh network, the method comprising:
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wirelessly detecting with a first antenna a presence of a first radio frequency (RF) signal having a first frequency, the presence of the first RF signal indicates that a first message is encoded onto a powerline, the first antenna electrically disconnected from the powerline; waking up a computer processor from an inactive state based on the presence of the first RF signal, the computer processor electrically disconnected from the powerline; after waking up the computer processor, wirelessly receiving with a second antenna a second RF signal having a second frequency different than the first frequency and comprising a second message that includes a device address, and determining whether the device address of the second message is an assigned address; returning the computer processor to the inactive state to save power when the device address of the second message is not the assigned address; detecting the zero crossings of the powerline, counting the zero crossings, and generating an interrupt to further wake up the computer processor when the zero-crossing count reaches a wake-up count; and
supplying operating power to the computer processor from a battery-operated power supply and not supplying the operating power from the powerline. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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20. A method to conserve power and interface with a mesh network, the method comprising:
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wirelessly detecting with a first antenna a presence of a first radio frequency (RF) signal having a first frequency, the presence of the first RF signal indicates that a first message is encoded onto a powerline, the antenna electrically disconnected from the powerline; detecting at least one zero crossing of the powerline; waking up a computer processor from an inactive state based on the presence of the first RF signal and the at least one zero crossing of the powerline, the computer processor electrically disconnected from the powerline; after waking up the computer processor, wirelessly receiving with a second antenna a second RF signal having a second frequency different than the first frequency and comprising a second message that includes a device address, and determining whether the device address of the second message is an assigned address; returning the computer processor to the inactive state to save power when the device address of the second message is not the assigned address; and supplying operating power to the computer processor from a battery-operated power supply and not supplying the operating power from the powerline.
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Specification