SELF-CALIBRATING CONTACTLESS POWER CONSUMPTION SENSING
First Claim
1. A system for sensing electrical power usage in an electrical power infrastructure of a structure, the structure comprising a circuit breaker box and one or more main electrical power supply lines for the electrical power infrastructure of the structure, the system comprising:
- a sensing device configured to be attached to a panel of the circuit breaker box overlying at least part of the one or more main electrical power supply lines, the sensing device comprising one or more magnetic field sensors;
a calibration device configured to be electrically coupled to the electrical power infrastructure of the structure, the calibration device comprising a load unit; and
one or more processing modules configured to receive one or more output signals from the sensing device,wherein;
the sensing device is devoid of being electrically or physically coupled to the one or more main electrical power supply lines or the electrical power infrastructure when the sensing device is attached to the panel; and
the one or more processing modules are further configured to determine the electrical power usage when the sensing device is coupled at any location over the panel, based at least in part on the one or more output signals received from the sensing device.
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Accused Products
Abstract
A system for sensing electrical power usage in an electrical power infrastructure of a structure. The system can include a sensing device configured to be attached to a panel of the circuit breaker box overlying at least part of the one or more main electrical power supply lines. The system also can include a calibration device configured to be electrically coupled to the electrical power infrastructure of the structure. The system further can include one or more processing modules configured to receive one or more output signals from the sensing device. The sensing device can be devoid of being electrically or physically coupled to the one or more main electrical power supply lines or the electrical power infrastructure when the sensing device is attached to the panel. Other embodiments are provided.
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Citations
27 Claims
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1. A system for sensing electrical power usage in an electrical power infrastructure of a structure, the structure comprising a circuit breaker box and one or more main electrical power supply lines for the electrical power infrastructure of the structure, the system comprising:
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a sensing device configured to be attached to a panel of the circuit breaker box overlying at least part of the one or more main electrical power supply lines, the sensing device comprising one or more magnetic field sensors; a calibration device configured to be electrically coupled to the electrical power infrastructure of the structure, the calibration device comprising a load unit; and one or more processing modules configured to receive one or more output signals from the sensing device, wherein; the sensing device is devoid of being electrically or physically coupled to the one or more main electrical power supply lines or the electrical power infrastructure when the sensing device is attached to the panel; and the one or more processing modules are further configured to determine the electrical power usage when the sensing device is coupled at any location over the panel, based at least in part on the one or more output signals received from the sensing device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of sensing electrical power being provided to a structure using a sensing device, a calibration device, and one or more processing modules, the sensing device comprising one or more magnetic field sensors, the sensing device being attached to a panel of a circuit breaker box, the panel of the circuit breaker box overlying at least a part of one or more main electrical power supply lines for an electrical power infrastructure of a structure, the calibration device comprising a load unit, the calibration device being electrically coupled to the electrical power infrastructure of the structure, the method comprising:
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automatically calibrating the sensing device by determining a first transfer function in a piecewise manner based on a plurality of ordinary power consumption changes in the structure; and determining a power consumption measurement using the one or more processing modules based on one or more output signals of the sensing device and the first transfer function. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A method of sensing electrical power being provided to a structure using a sensing device, a calibration device, and one or more processing modules, the sensing device being attached to a panel of a circuit breaker box, the panel of the circuit breaker box overlying at least a part of one or more main electrical power supply lines for an electrical power infrastructure of a structure, the calibration device comprising a load unit, the method comprising:
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determining a current flowing in the one or more main electrical power supply lines based at least in part on one or more output signals of the sensing device; and determining a phase difference between the current flowing in the one or more main electrical power supply lines and a voltage of the one or more main electrical power supply lines measured by the calibration device, wherein; the calibration device is electrically coupled to the electrical power infrastructure of the structure; the sensing device comprises one or more magnetic field sensors configured to measure a magnetic flux produced by at least a part of the one or more main electrical power supply lines and generate the one or more output signals of the sensing device based on the magnetic flux measured by the sensing device; and the sensing device is devoid of being electrically or physically coupled to the one or more main electrical power supply lines. - View Dependent Claims (26, 27)
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Specification