{
  "$type": "site.standard.document",
  "description": "[Object] To provide a geomagnetic sensing device including correcting means capable of correcting an offset error generated after calibration. [Solution] A controller 10 includes a calibration unit 10a, an offset error correcting unit 10b, an operation unit 10c, and the like. The calibration unit…",
  "path": "/patents/999875",
  "publishedAt": "2012-08-01T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "G01C17/28",
    "ALPS ELECTRIC CO LTD [JP]"
  ],
  "textContent": "[Object] To provide a geomagnetic sensing device including correcting means capable of correcting an offset error generated after calibration. [Solution] A controller 10 includes a calibration unit 10a, an offset error correcting unit 10b, an operation unit 10c, and the like. The calibration unit 10a obtains a reference point Og of an output of a magnetic sensor, and performs offset correction. The offset error correcting unit 10b is capable of performing operation processing for both the correction of a major offset error and the correction of a minor offset error by using a radius R (the magnitude of a geomagnetic vector) of a virtual circle or a virtual sphere (see Figs. 4 and 5 ), appropriately and easily correcting the offset error with a small amount of operation, and reducing the burden to the controller 10.",
  "title": "GEOMAGNETISM DETECTION DEVICE"
}