发明名称 PERSONNEL DETECTION AND PROTECTION SYSTEMS FOR USE IN UNDERGROUND MINES
摘要 A personnel detection and protection system comprises sensor means for detecting the presence of personnel in a prohibited operational zone, and for deriving signal means indicative of such a detected presence, and control means responsive to the deriving of such signal means to control the operation or movement of equipment in the prohibited zone.
申请公布号 GB2180029(B) 申请公布日期 1989.08.23
申请号 GB19860019427 申请日期 1986.08.08
申请人 * COAL INDUSTRY 发明人 DEREK KEITH * BARHAM;PHILIP PETER * JENKINS
分类号 E21D23/16;E21D23/12;E21D23/14;E21F11/00;E21F17/18;F16P3/14 主分类号 E21D23/16
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