Accession Number : ADD008039

Title :   Electronic Breathing Mixture Control.

Descriptive Note : Patent,


Personal Author(s) : Manley,Claude E ; Pennella,John J ; Deaton,Donald J ; Crandall,Alan L ; Hersey,James P

Report Date : 02 Dec 1980

Pagination or Media Count : 9

Abstract : An electronic breathing mixture control system which senses and controls the oxygen component partial pressure of an underwater breathing mixture. Three oxygen sensors disposed within a mix chamber generate voltages proportional to the oxygen partial pressure in the mixture. These voltages are processed and compared with reference voltages using digital logic circuitry. The resulting processed signals control two light emitting diodes warning the user of improper oxygen partial pressure and in addition control a switch that actuates an oxygen valve which either restricts oxygen flow to the mix chamber or allows more oxygen to flow therein.

Descriptors :   *Patents, *Electronic equipment, *Breathing apparatus, *Mixers(Mechanical), Control systems, Logic circuits, Digital systems, Circuit analysis, Scuba apparatus, Gas flow, Partial pressure, Breathing gases, Oxygen, Mixtures, Respiration, Light emitting diodes, Warning systems, Schematic diagrams, Specifications

Subject Categories : Electrooptical and Optoelectronic Devices
      Life Support Systems

Distribution Statement : APPROVED FOR PUBLIC RELEASE