发明名称 |
Cop switch-position encoder, method and apparatus |
摘要 |
A pulse is applied sequentially to each geophone input line to the stator of a CDP switch. A pulse detector is connected to the first output line of the CDP Switch cursor. A counter counts the number of pulses applied to inactive input lines before a pulse is detected by the pulse detector. The pulse count is the geophone group number of the first active geophone group.
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申请公布号 |
US4484314(A) |
申请公布日期 |
1984.11.20 |
申请号 |
US19810294585 |
申请日期 |
1981.08.20 |
申请人 |
WESTERN GEOPHYSICAL COMPANY OF AMERICA |
发明人 |
THIGPEN, BEN B. |
分类号 |
G01V1/22;(IPC1-7):G01C17/38;G01K15/00 |
主分类号 |
G01V1/22 |
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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