Method and system for testing and calibrating an accelerometer of an electronic device
First Claim
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1. A method of testing and calibrating an accelerometer of an electronic device, comprising:
- detecting when the electronic device is received within a nest of a test fixture, wherein the detecting comprises;
activating an electromagnet in the test fixture; and
detecting an electromagnetic field generated by the electromagnet using a magnetic sensor in the electronic device when the electronic device is received within the nest;
calculating an offset value for each sensing axis of the accelerometer in response to detecting that the electronic device is received within the nest; and
storing the offset values in a memory of the electronic device.
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Abstract
A method and system for testing and calibrating an accelerometer of an electronic device are provided. In accordance with one embodiment, there is a method of testing and calibrating an accelerometer of an electronic device, comprising: detecting the electronic device within a nest of a test fixture; calculating an offset value for each sensing axis of the accelerometer in response to detecting the electronic device within the nest; and storing the offset values in a memory of the electronic device.
25 Citations
14 Claims
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1. A method of testing and calibrating an accelerometer of an electronic device, comprising:
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detecting when the electronic device is received within a nest of a test fixture, wherein the detecting comprises; activating an electromagnet in the test fixture; and detecting an electromagnetic field generated by the electromagnet using a magnetic sensor in the electronic device when the electronic device is received within the nest; calculating an offset value for each sensing axis of the accelerometer in response to detecting that the electronic device is received within the nest; and storing the offset values in a memory of the electronic device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An electronic device, comprising:
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a controller; an accelerometer with three mutually orthogonal sensing axes connected to the controller; a magnetic sensor connected to the controller; a memory connected to the controller; wherein the controller, in a testing and calibrating mode, is configured to automatically calculate an offset value for each sensing axis of the accelerometer in response to the magnetic sensor detecting an electromagnetic field greater than or equal to a predetermined threshold and store the offset values in the memory, wherein the predetermined threshold corresponds to a strength of an electromagnetic field generated by an electromagnet in a test fixture when the device is received within a nest of the test fixture. - View Dependent Claims (11, 12, 13, 14)
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Specification