发明名称 |
Sheath monitoring technique |
摘要 |
A system (10) for monitoring a cable (14) for fault in the metallic sheath (12) includes a transmitter (16) for applying a signal to a first end of the metallic member at periodic intervals. A receiver (18) periodically measures what if any signal exists at a second end of the metallic member in synchronism with the application of the signal so that each measurement is made not long longer than the interval during which the signal is applied to the metallic member. The receiver communicates the measurements to a central facility for evaluation to determine whether the metallic member exhibits a fault.
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申请公布号 |
US6657436(B1) |
申请公布日期 |
2003.12.02 |
申请号 |
US20010012728 |
申请日期 |
2001.10.30 |
申请人 |
AT&T CORP. |
发明人 |
ESLAMBOLCHI HOSSEIN;HUFFMAN JOHN SINCLAIR |
分类号 |
G01R31/08;(IPC1-7):G01R31/08 |
主分类号 |
G01R31/08 |
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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