SYSTEM FOR TESTING ACCURACY OF ELECTRONIC COMPASS
First Claim
1. A system for testing accuracy of an electronic compass, the system comprising:
- a circular track;
a compass seat surrounded by the circular track, the electronic compass being installed on the compass seat;
an electromagnetic element movably disposed on the circular track;
a driver configured for driving the electromagnetic element to move along the circular track;
a power source for powering the electromagnetic element so that the electromagnetic element generates a magnetic field, the electronic compass measuring the magnetic field and calculating direction relative to the magnetic field at a plurality of points of the circular track when driven to move along the circular track and outputting a plurality of magnetic densities and a plurality of directional results, each of which is associated with a corresponding point of the circular track;
a calculator configured for comparing the magnetic densities and the directional results with a plurality of ideal values to determine the accuracy of the electronic compass; and
a magnetic shielding chamber for shielding the electromagnetic element and the electronic compass from interference of external magnetic fields.
1 Assignment
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Accused Products
Abstract
A system for testing the accuracy of an electronic compass is disclosed. The system includes a circular track, a compass seat, an electromagnetic element, a driver, a power source, a calculator, and a magnetic shielding chamber. The electromagnetic element is disposed on the circular track and powered by the power source to generate a magnetic field. The electronic compass is installed on the compass seat and surrounded by the circular track. As such, the electronic compass can measure the magnetic field of the electromagnetic element and calculate direction relative to the electromagnetic element at different points of the circular track when the electromagnetic element is driven by the driver to move along the circular track. The magnetic shielding chamber is for shielding the electromagnetic element and the electronic compass from interference of external magnetic fields.
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Citations
13 Claims
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1. A system for testing accuracy of an electronic compass, the system comprising:
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a circular track; a compass seat surrounded by the circular track, the electronic compass being installed on the compass seat; an electromagnetic element movably disposed on the circular track; a driver configured for driving the electromagnetic element to move along the circular track; a power source for powering the electromagnetic element so that the electromagnetic element generates a magnetic field, the electronic compass measuring the magnetic field and calculating direction relative to the magnetic field at a plurality of points of the circular track when driven to move along the circular track and outputting a plurality of magnetic densities and a plurality of directional results, each of which is associated with a corresponding point of the circular track; a calculator configured for comparing the magnetic densities and the directional results with a plurality of ideal values to determine the accuracy of the electronic compass; and a magnetic shielding chamber for shielding the electromagnetic element and the electronic compass from interference of external magnetic fields. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification