SYSTEMS AND METHODS FOR MEASURING ELECTRICAL POWER USAGE IN A STRUCTURE AND SYSTEMS AND METHODS OF CALIBRATING THE SAME
First Claim
1. A method of calibrating a magnetic field sensor device, the magnetic field sensor device coupled to a first surface of a circuit breaker box, the circuit breaker box overlying at least part of an electrical power infrastructure of a building, the electrical power infrastructure having one or more main electrical supply conductors, a first phase branch, and a second phase branch, the magnetic field sensor device comprising two or more magnetic field sensors, the method comprising:
- determining via the magnetic field sensor device a first amplitude and a first phase angle of a first magnetic field in the two or more magnetic field sensors of the magnetic field sensor device while the magnetic field sensor device is coupled to the first surface of the circuit breaker box;
after a first load has been coupled to the first phase branch of the electrical power infrastructure, determining via the magnetic field sensor device, a second amplitude and a second phase angle of a second magnetic field in the two or more magnetic field sensors of the magnetic field sensor device while the magnetic field sensor device is coupled to the first surface of the circuit breaker box and while the first load is coupled to the first phase branch;
after the first load has been uncoupled from the first phase branch of the electrical power infrastructure and a second load has been coupled to the second phase branch of the electrical power infrastructure, determining via the magnetic field sensor device, a third amplitude and a third phase angle of a third magnetic field in the two or more magnetic field sensors of the magnetic field sensor device while the magnetic field sensor device is coupled to the first surface of the circuit breaker box and while the second load is coupled to the second phase branch; and
determining via a computer processor one or more calibration coefficients for the magnetic field sensor device at least in part using the first amplitude and the first phase angle of the first magnetic field in the two or more magnetic field sensors, the second amplitude and the second phase angle of the second magnetic field in the two or more magnetic field sensors, and the third amplitude and the third phase angle of the third magnetic field in the two or more magnetic field sensors,wherein;
the magnetic field sensor device is not electrically coupled in series with or physically coupled directly to the one or more main electrical supply conductors at the circuit breaker box when the magnetic field sensor device is coupled to the first surface of the circuit breaker box.
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Accused Products
Abstract
A magnetic field sensing device can include two or more magnetic field sensors configured to detect a magnetic field in a current carrying conductor. The magnetic field sensing device also can include a phase detector electrically coupled to outputs of the two or more magnetic field sensors. The magnetic field sensing device further can include a phase indicator electrically coupled to the phase detector. The phase indictor can include a display that indicates when the two or more magnetic field sensors are in a position in relation to the current carrying conductor. Other embodiments are provided.
9 Citations
19 Claims
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1. A method of calibrating a magnetic field sensor device, the magnetic field sensor device coupled to a first surface of a circuit breaker box, the circuit breaker box overlying at least part of an electrical power infrastructure of a building, the electrical power infrastructure having one or more main electrical supply conductors, a first phase branch, and a second phase branch, the magnetic field sensor device comprising two or more magnetic field sensors, the method comprising:
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determining via the magnetic field sensor device a first amplitude and a first phase angle of a first magnetic field in the two or more magnetic field sensors of the magnetic field sensor device while the magnetic field sensor device is coupled to the first surface of the circuit breaker box; after a first load has been coupled to the first phase branch of the electrical power infrastructure, determining via the magnetic field sensor device, a second amplitude and a second phase angle of a second magnetic field in the two or more magnetic field sensors of the magnetic field sensor device while the magnetic field sensor device is coupled to the first surface of the circuit breaker box and while the first load is coupled to the first phase branch; after the first load has been uncoupled from the first phase branch of the electrical power infrastructure and a second load has been coupled to the second phase branch of the electrical power infrastructure, determining via the magnetic field sensor device, a third amplitude and a third phase angle of a third magnetic field in the two or more magnetic field sensors of the magnetic field sensor device while the magnetic field sensor device is coupled to the first surface of the circuit breaker box and while the second load is coupled to the second phase branch; and determining via a computer processor one or more calibration coefficients for the magnetic field sensor device at least in part using the first amplitude and the first phase angle of the first magnetic field in the two or more magnetic field sensors, the second amplitude and the second phase angle of the second magnetic field in the two or more magnetic field sensors, and the third amplitude and the third phase angle of the third magnetic field in the two or more magnetic field sensors, wherein; the magnetic field sensor device is not electrically coupled in series with or physically coupled directly to the one or more main electrical supply conductors at the circuit breaker box when the magnetic field sensor device is coupled to the first surface of the circuit breaker box. - View Dependent Claims (2, 3, 4)
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5. A magnetic field sensing device comprising:
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two or more magnetic field sensors configured to detect a magnetic field in a current carrying conductor; a phase detector electrically coupled to outputs of the two or more magnetic field sensors; and a phase indicator electrically coupled to the phase detector, wherein; the phase indictor comprises a display that indicates when the two or more magnetic field sensors are in a predefined position in relation to the current carrying conductor. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12)
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13. A method of providing a magnetic field sensing device, the method comprising:
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providing two or more magnetic field sensors configured to detect a magnetic field in a current carrying conductor; providing a phase detector electrically coupled to outputs of the two or more magnetic field sensors; and providing a phase indicator electrically coupled to the phase detector, wherein; the phase indictor comprises a display that indicates when the two or more magnetic field sensors are in a predefined position in relation to the current carrying conductor. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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Specification