发明名称 |
ID-OD discrimination sensor |
摘要 |
A sensor body for use in a pig for determining characteristics of a pipeline wall though which the pig passes includes a circuit board and a single coil wrapped around the circuit board. A microcontroller is mounted to the circuit board and connected to the single coil and configured to induce a waveform on the coil to thereby create an eddy current in the pipeline wall adjacent the sensor body. The microcontroller is also configured to measure changes in a characteristic of the induced waveform on the single coil that correspond to the presence of anomalies on an inside diameter of the pipeline wall. The sensor body also includes a sensor body cover molded about the circuit board, the microcontroller and the single coil. The sensor body cover consists essentially of a wear resistant, non-conductive material that includes a polymer material.
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申请公布号 |
US7256576(B2) |
申请公布日期 |
2007.08.14 |
申请号 |
US20050193283 |
申请日期 |
2005.07.29 |
申请人 |
GENERAL ELECTRIC COMPANY |
发明人 |
MANDZIUK MICHAEL WILLIAM;GIES PAUL DOUGLAS |
分类号 |
G01M99/00;G01N27/90;F16L55/40;F16L101/30 |
主分类号 |
G01M99/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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