Threshold barrier system
AssigneeRadio Systems Corporation
InventorsSteven Roger Floyd, Duane A. Gerig, William P. Moore, Thomas Brandon Lee
Life of this patent
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Abstract
A system is described that includes a transmitter for generating a magnetic field comprising a first detection region and a second detection region, wherein the first detection region is different than the second detection region. The system comprises a receiver configured to detect at a location of the receiver in the magnetic field a magnetic field vector, a polarity, and at least one additional vector. The system comprises the receiver configured to use the magnetic field vector, the polarity, and the at least one additional vector to determine a position of the receiver in the magnetic field.
Claims20
A system comprising:
- a transmitter for generating a magnetic field comprising a first detection region and a second detection region, wherein the first detection region is different than the second detection region;
- a receiver configured to detect at a location of the receiver in the magnetic field a magnetic field vector, a polarity, and at least one additional vector;
- the receiver configured to compute an angle between the magnetic field vector and the at least one additional vector,
- the receiver configured to use the magnetic field vector, the polarity, and the at least one additional vector to determine a position of the receiver in the magnetic field, the determining the position including comparing the angle to at least one threshold value and determining the position of the receiver relative to the transmitter using the angle and the polarity.
A system comprising:
- a transmitter for generating a magnetic field comprising a first detection region and a second detection region, wherein the first detection region is different than the second detection region;
- a receiver configured to detect at a location of the receiver in the magnetic field a magnetic field vector, a polarity, and at least one additional vector;
- the receiver configured to compute an angle between the magnetic field vector and the at least one additional vector;
- the receiver configured to determine a presence of the receiver in the first detection region when the angle falls below a first value and the polarity comprises a first polarity.
Dependencies are inferred from the claim text.