发明授权
- 专利标题: Locator with apparent depth indication
- 专利标题(中): 具有明显深度指示的定位器
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申请号: US11106894申请日: 2005-04-15
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公开(公告)号: US07332901B2公开(公告)日: 2008-02-19
- 发明人: Mark S. Olsson , Michael J. Martin , Christoph H. Maier , Paul G. Stuart
- 申请人: Mark S. Olsson , Michael J. Martin , Christoph H. Maier , Paul G. Stuart
- 申请人地址: US CA San Diego
- 专利权人: SeekTech, Inc.
- 当前专利权人: SeekTech, Inc.
- 当前专利权人地址: US CA San Diego
- 代理商 Michael H. Jester
- 主分类号: G01V3/08
- IPC分类号: G01V3/08 ; G01V3/12
摘要:
A human-portable utility locator system for locating and tracing a buried utility line characterized by an electromagnetic field emission. The locator may include a horizontal spaced sensor pair for detecting the horizontal field asymmetry of the emitted field in one or more independent frequency bands, which is employed to assist in determining an accurate “virtual depth” measurement for producing detection events. An event detector may be disposed to detect events corresponding to extremum in the B-field gradient with respect to time and a user interface (UI) coupled to the event detector signals the detected event to a user. In a preferred embodiment, one pair of spaced-apart 3D magnetic sensor arrays is disposed substantially orthogonal to another intermediate spaced-apart pair of sensors.
公开/授权文献
- US20060232259A1 Locator with apparent depth indication 公开/授权日:2006-10-19