| 发明名称 |
METHOD AND APPARATUS FOR CALIBRATING A MAGNETIC SENSOR |
| 摘要 |
A magnetic sensor is calibrated by acquiring magnetic field measurements, fitting at least part of the plurality of magnetic field measurements to an ellipsoid model to obtain a coordinate of a center of the ellipsoid model, and determining a calibration offset according to the coordinate of the center of the ellipsoid model. The calibration offset is used to calibrate the magnetic sensor. The magnetic sensor itself obtains the magnetic field measurements. A processing device coupled to the magnetic sensor operates to process the magnetic field measurements is accordance with the ellipsoid mode and determine the calibration offset. |
| 申请公布号 |
US2014336968(A1) |
申请公布日期 |
2014.11.13 |
| 申请号 |
US201414271982 |
申请日期 |
2014.05.07 |
| 申请人 |
STMICROELECTRONICS (CHINA) INVESTMENT CO. LTD |
发明人 |
Tu Travis;Fang Shu |
| 分类号 |
G01R35/00 |
主分类号 |
G01R35/00 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A method for calibrating a magnetic sensor, comprising:
acquiring a plurality of magnetic field measurements from said magnetic sensor; fitting at least part of the plurality of magnetic field measurements to an ellipsoid model to obtain a coordinate of a center of the ellipsoid model; determining a calibration offset according to the coordinate of the center of the ellipsoid model; and calibrating the magnetic sensor using the calibration offset. |
| 地址 |
Shanghai CN |
