发明名称 |
System for wireless communication along a drill string |
摘要 |
A wireless communication and drill string telemetry system. The communication system is used for communicating information along a drill string between a boring tool and a boring machine. An insulator assembly provides an electrically insulated gap between the drill string communication path and a soil engaging electrode for the electrical return path. A transmitter assembly includes a data transmitter for encoding and transmitting a data signal. A signal coupler couples the data signal to the drill string and provides a controlled electrical connection between the drill string communication path and the soil engaging electrode. The signal coupler comprises a transformer and a current regulating circuit to adjust a voltage across the transformer's primary winding. A receiver assembly is disposed proximate the drilling machine and includes a toroidal pickup coil and a signal processing assembly. The pickup coil has an annulus and is positioned such that the drill string communication path passes through the annulus. The pickup coil produces a signal voltage in response to a signal current on the drill string that the signal processing assembly processes to extract the data signal. |
申请公布号 |
US8305229(B1) |
申请公布日期 |
2012.11.06 |
申请号 |
US20100689148 |
申请日期 |
2010.01.18 |
申请人 |
GARD MICHAEL F.;THE CHARLES MACHINE WORKS, INC. |
发明人 |
GARD MICHAEL F. |
分类号 |
G01V3/00 |
主分类号 |
G01V3/00 |
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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