Device and method for automatically detecting a calibration termination for a geomagnetic sensor
First Claim
1. A device for automatically detecting a calibration termination of a geomagnetic sensor, comprising:
- a detection unit for detecting signals X and Y outputted from X-axis and Y-axis coils of the geomagnetic sensor, respectively;
a calculation unit for calculating slopes dX/dt and dY/dt of the signals X and Y, respectively, and the number of sign changes Nx and Ny of the slope dX/dt of the signal X and the slope dY/dt of the signal Y, respectively;
a display unit for displaying the calibration termination and a calibration progress state for the geomagnetic sensor; and
a control unit for outputting a driving signal to the display unit to display a state of the calibration termination based on the slope dX/dt of the signal X and the slope dY/dt of the signal Y and the number of slope sign changes Nx and Ny.
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Accused Products
Abstract
A device for automatically detecting a calibration termination of a geomagnetic sensor includes a detection unit for detecting signals X and Y outputted from X-axis and Y-axis coils of the geomagnetic sensor, respectively, a calculation unit for calculating slopes dX/dt and dY/dt of the signals X and Y, respectively, and the number of sign changes Nx and Ny of the slope dX/dt of the signal X and the slope dY/dt of the signal Y, respectively, a display unit for displaying the calibration termination and a calibration progress state for the geomagnetic sensor, and a control unit for outputting a driving signal to the display unit to display a state of the calibration termination based on the slope dX/dt of the signal X and the slope dY/dt of the signal Y and the number of slope sign changes Nx and Ny.
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Citations
10 Claims
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1. A device for automatically detecting a calibration termination of a geomagnetic sensor, comprising:
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a detection unit for detecting signals X and Y outputted from X-axis and Y-axis coils of the geomagnetic sensor, respectively;
a calculation unit for calculating slopes dX/dt and dY/dt of the signals X and Y, respectively, and the number of sign changes Nx and Ny of the slope dX/dt of the signal X and the slope dY/dt of the signal Y, respectively;
a display unit for displaying the calibration termination and a calibration progress state for the geomagnetic sensor; and
a control unit for outputting a driving signal to the display unit to display a state of the calibration termination based on the slope dX/dt of the signal X and the slope dY/dt of the signal Y and the number of slope sign changes Nx and Ny. - View Dependent Claims (2, 3, 4, 5)
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6. A method for automatically detecting a calibration termination for a geomagnetic sensor, comprising:
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detecting signals X and Y outputted from X-axis and Y-axis coils of the geomagnetic sensor, respectively;
calculating slopes dX/dt and dY/dt of the signals X and Y, respectively, and the number of sign changes Nx and Ny of the slope dX/dt of the signal X and the slope dY/dt of the signal Y, respectively;
deciding a calibration termination timing based on the slopes dX/dt and dY/dt of the signals X and Y and the number of slope sign changes Nx and Ny; and
displaying the calibration termination and a calibration progress state for the geomagnetic sensor. - View Dependent Claims (7, 8, 9, 10)
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Specification