Electronic system for release of on-bottom seismometer unit
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United States of America Patent
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-
May 1, 1984
Issued Date -
N/A
app pub date -
Jan 17, 1983
filing date -
Jun 27, 1980
priority date (Note) -
Expired
status (Latency Note)
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Abstract
In an on-bottom seismometer, the electronic system for operating the release mechanism includes a plurality of independent power sources. A plurality of release condition sensors each produce a release output upon the occurrence of a condition in which the unit is to be recovered at the water's surface. Logic circuitry responds to the release condition sensors for producing a relase signal which is applied to driving circuits for primary and secondary release devices. Switching means automatically connect the logic circuitry and the driving circuitry to an operable one of the power sources.
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