发明授权
- 专利标题： Pipe inspection cable counter and overlay management system
- 专利标题（中）： 管道检查电缆计数器和覆盖管理系统
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申请号： US12766742申请日： 2010-04-23
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公开(公告)号： US08970211B1公开(公告)日： 2015-03-03
- 发明人: Mark S. Olsson , Jan Soukup , Jeffrey A. Prsha , Ray Merewether
- 申请人： Mark S. Olsson , Jan Soukup , Jeffrey A. Prsha , Ray Merewether
- 申请人地址： US CA San Diego
- 专利权人： See Scan, Inc.
- 当前专利权人： See Scan, Inc.
- 当前专利权人地址： US CA San Diego
- 代理商 Steven C. Tietsworth, Esq.
- 主分类号： G01N27/72
- IPC分类号： G01N27/72 ; G01D5/14 ; G01B7/02
摘要：
An apparatus is disclosed for magnetically sensing and computing and displaying cable distance, and computing and displaying other user-selectable information in a pipe inspection system. At least two permanent magnets are mounted in spaced apart fashion, on either a frame, or a rotatable member supported on the frame for rotation about an axis. A magnetic sensor is mounted on the other one of the rotatable member or frame on which the magnets are not mounted, so that either the magnets rotate around the magnetic sensor or the magnetic sensor rotates between the permanent magnets. The magnetic sensor generates signals representing changes in at least two axes in a composite magnetic field generated by the permanent magnets.