发明名称 |
Device for transmitting signals by radio and cable between a central control and recording system and data acquisition devices |
摘要 |
In a data acquisition for seismic exploration, where the terrain is rugged or includes natural features which prohibit satisfactory radio communication between a central control and recording system and a plurality of seismic data signal acquisition devices, a relay element and a transmission cable are provided so that those acquisition devices which are not capable of satisfactory radio communication with the central control and recording system communicate instead with the relay element either by transmission cable or radio transmission and the relay element in turn communicates with the central control and recording system either by radio transmission or transmission cable, respectively.
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申请公布号 |
US4979152(A) |
申请公布日期 |
1990.12.18 |
申请号 |
US19830564392 |
申请日期 |
1983.12.22 |
申请人 |
INSTITUT FRANCAIS DU PETROLE |
发明人 |
RIALAN, JOSEPH;THIERRY, GERARD |
分类号 |
G08C17/00;G01V1/22;G08C19/00 |
主分类号 |
G08C17/00 |
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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