ELECTROMECHANICAL MAGNETOMETER AND APPLICATIONS THEREOF
First Claim
1. An apparatus, comprising:
- a magnetic core;
a mechanical resonator; and
an induction coil coupled to the mechanical resonator for producing an electrical signal having an operating frequency proportional to a mechanical resonating frequency of the mechanical resonator and proportional to a change in a magnetic flux in the magnetic core resulting from a change in orientation of the apparatus.
2 Assignments
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Accused Products
Abstract
A system that incorporates the subject disclosure may include, for example, a method for producing an electrical signal from an apparatus comprising an induction coil coupled to a mechanical resonator, wherein the electrical signal has an operating frequency proportional to a mechanical resonating frequency of the mechanical resonator and proportional to a change in a magnetic flux resulting from a change in orientation in the apparatus, detecting with a detection circuit a change in the electrical signal resulting from a change in the magnetic flux caused by the change in orientation in the apparatus, and determining a direction of the apparatus according to the change in the electrical signal. Other embodiments are disclosed.
30 Citations
30 Claims
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1. An apparatus, comprising:
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a magnetic core; a mechanical resonator; and an induction coil coupled to the mechanical resonator for producing an electrical signal having an operating frequency proportional to a mechanical resonating frequency of the mechanical resonator and proportional to a change in a magnetic flux in the magnetic core resulting from a change in orientation of the apparatus. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A navigation system, comprising:
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a global positioning system receiver; a gyroscope; an accelerometer; an orientation sensor, comprising; a mechanical resonator; and an induction coil coupled to the mechanical resonator for producing an electrical signal having an operating frequency proportional to a mechanical resonating frequency of the mechanical resonator and proportional to a change in a magnetic flux resulting from a change in orientation of the apparatus; a memory to store instructions; a controller coupled to the memory, the global positioning system receiver, the gyroscope, the accelerometer and the orientation sensor, wherein responsive to executing the instructions, the controller performs operations comprising; detecting a failure of the global positioning system receiver to provide a reliable location coordinate; and determining a position and orientation of the navigation system according to a last known location coordinate supplied by the global positioning system receiver and position information obtained from at least one of the gyroscope, the accelerometer, the orientation sensor, or a combination thereof. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A method, comprising:
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producing an electrical signal from an apparatus comprising an induction coil coupled to a mechanical resonator, wherein the electrical signal has an operating frequency proportional to a mechanical resonating frequency of the mechanical resonator and proportional to a change in a magnetic flux resulting from a change in orientation in the apparatus; detecting with a detection circuit a change in the electrical signal resulting from a change in the magnetic flux caused by the change in orientation in the apparatus; and determining a direction of the apparatus according to the change in the electrical signal. - View Dependent Claims (22, 23, 24, 25, 26)
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27. An orientation sensor, comprising:
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a mechanical resonator; and an induction coil coupled to the mechanical resonator for producing an electrical signal having an operating frequency proportional to a mechanical resonating frequency of the mechanical resonator and proportional to a change in a magnetic flux resulting from a change in orientation of the apparatus. - View Dependent Claims (28, 30)
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29. A computer-readable storage medium, comprising computer instructions, which when executed by a processor, causes the processor to perform operations comprising:
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receiving information relating to an electrical signal produced by an orientation sensor comprising an induction coil coupled to mechanical resonator, wherein the electrical signal has an operating frequency proportional to a mechanical resonating frequency of the mechanical resonator and proportional to a change in a magnetic flux resulting from a change in orientation in the orientation sensor; detecting from the information a change in the electrical signal resulting from a change in the magnetic flux in the magnetic core caused by the change in orientation in the orientation sensor; and determining from the detected change a direction of the orientation sensor according to the change in the electrical signal.
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Specification