发明名称 |
Communication system for use in a mine |
摘要 |
A communication system for use in a mine to provide two-way communication between a conveyance which moves in a mine and a communication network located in the mine. The system comprising: means for producing a signal indicative of the location of the conveyance in the mine; a plurality of repeaters situated in the mine and being coupled to the communication network; and a controller for controlling the repeaters and the controller being responsive to the signal and having means for activating the repeater which is proximate to the conveyance so that a communication link is provided between the conveyance and the communication network.
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申请公布号 |
US5504809(A) |
申请公布日期 |
1996.04.02 |
申请号 |
US19930115619 |
申请日期 |
1993.09.03 |
申请人 |
PLACER DOME INC. |
发明人 |
CHALMERS, FRANK;MILLIONS, ROBERT |
分类号 |
H04M9/00;(IPC1-7):H04M1/60;H04M11/00 |
主分类号 |
H04M9/00 |
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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