Energy usage monitoring with remote display and automatic detection of appliance including graphical user interface
First Claim
1. An energy monitoring device coupleable to a power supply, the energy monitoring device programmed to identify the presence and a state of an electrical device coupled to the power supply of a plurality of electrical devices coupled to the power supply, based on a load signature computed from a change in successive samples of the power supply measured by the energy monitoring device taken at a point upstream of the electrical device to be monitored, wherein each sample comprises a plurality of values associated with a plurality of measured power supply parameters.
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Accused Products
Abstract
Devices and methods for identifying an electrical device, and its state, in a network of electrical devices are disclosed. An energy monitoring device is programmed to identify an electrical device coupled to a power supply, and a state of the electrical device, from a change in successive measurements of the power supply. Algorithms for determining a load signature for an electrical device and its state are disclosed. A stored table of load signatures for states is used to identify devices, and states. Energy monitoring information is collected and presented to the user on a display, a remote display, or is transmitted over a network to a remote device such as a personal computer, personal digital assistant, an iPhone, a cell phone, voice mail, email, or text message.
145 Citations
39 Claims
- 1. An energy monitoring device coupleable to a power supply, the energy monitoring device programmed to identify the presence and a state of an electrical device coupled to the power supply of a plurality of electrical devices coupled to the power supply, based on a load signature computed from a change in successive samples of the power supply measured by the energy monitoring device taken at a point upstream of the electrical device to be monitored, wherein each sample comprises a plurality of values associated with a plurality of measured power supply parameters.
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21. A method of identifying an electrical device coupled to a power supply, and a state of the electrical device, comprising:
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receiving, by an energy monitoring device, a first plurality of values associated with a plurality of measured power supply parameters; receiving, by the energy monitoring device, a second plurality of values associated with the plurality of measured power supply parameters; detecting a change between the first value and the second value associated with at least one power supply parameter; computing a load signature for the electrical device based upon the first and second values associated with the plurality of measured power supply parameters; and looking up the load signature of the electrical device in a memory, wherein the load signatures stored in the memory are associated with an electrical device identifier and a state of the electrical device associated with the load signature, thereby identifying an electrical device coupled to a power supply, and a state of the electrical device. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
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36. A method of creating a database of load signatures for a plurality of electrical devices coupled to a power network having a plurality of states, the method comprising:
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measuring, by an energy monitoring device, a first plurality of values associated with a plurality of measured power supply parameters of an electrical device coupled to the power network, wherein the electrical device is in a first state; measuring, by the energy monitoring device, a second plurality of values associated with the plurality of measured power supply parameters; detecting a change of state of the electrical device from the first state to a second state utilizing the first and second plurality of values associated with the plurality of measured power supply parameters; computing a load signature from the first and second plurality of values associated with the plurality of measured power supply parameters; and storing a database record comprising the load signature, the second state, and an identifier for the electrical device, thereby creating a database of load signatures for a plurality of electrical devices having a plurality of states. - View Dependent Claims (37, 38)
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Specification