发明名称 |
Acoustic navigation aid for autonomous coal miner |
摘要 |
An apparatus for determining thickness of a wall or coal seam includes a device for measuring the time of sound travel through the thickness; a flexible isolation bellows that mechanically supports the device for measuring the time of sound travel; and a retractable isolation arm attached to the isolation bellows. The device for measuring the time of sound travel may be a single-beam pulse sonar system. The single-beam pulse sonar system includes a pulse generator, a power amplifier, a transmit/receive switch, a reciprocal acoustic transducer, a receiver for determining the thickness, and a display and/or an electronic feedback circuit for steering an autonomous miner.
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申请公布号 |
US6094986(A) |
申请公布日期 |
2000.08.01 |
申请号 |
US19980209839 |
申请日期 |
1998.12.11 |
申请人 |
THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE ARMY |
发明人 |
WORTMAN, DONALD E.;BRUNO, JOHN D. |
分类号 |
G01B17/02;G01S7/521;(IPC1-7):G01N29/18 |
主分类号 |
G01B17/02 |
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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