초록 ▼

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 surf

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.

대표청구항 ▼

A system for releasing an underwater unit comprising: a release mechanism for releasing a ballast weight from said unit; a plurality of release condition sensors, each producing a release output upon the occurrence of a condition in which said unit is to be recovered; logic circuitry responsive to s

A system for releasing an underwater unit comprising: a release mechanism for releasing a ballast weight from said unit; a plurality of release condition sensors, each producing a release output upon the occurrence of a condition in which said unit is to be recovered; logic circuitry responsive to said release condition sensors for producing a release signal; driving circuitry responsive to said release signal for actuating said release mechanism; two independent power sources connected to said logic circuitry and said driving circuitry both of said power sources providing power to said driving circuitry when both of said power sources are operable; and switching means for automatically disconnecting said logic circuitry and said driving circuitry from an inoperable one of said power sources.