Self contained breathing apparatus combined duration factor for breathing systems

• US 20060201508A1
• Filed: 08/30/2005
• Published: 09/14/2006
• Est. Priority Date: 08/30/2004
• Status: Abandoned Application

• Current Assignee: Laguna Research Incorporated
• Original Assignee: Laguna Research Incorporated
• Inventors: Miller, Wayne K., Forsyth, David E.
• Application Number:
  US11/215,349
• Publication Number:
  US 20060201508A1
• Time in Patent Office: Days
• US Class Current: 128/204.260
• CPC Class Codes: A62B 7/08 containing chemicals producing oxygen
• CPC Class Codes: B63C 11/22 carried by diver
• CPC Class Codes: B63C 2011/021 Diving computers, i.e. portable computers specially adapted for divers, e.g. wrist worn, watertight electronic devices for detecting or calculating scuba diving parameters
• CPC Class Codes: B63C 2011/188 comprising warning means for breathing gas run-out

Abstract

The present claim enables a breathing system to be assessed with a minimum of attention or experience regardless of type of breathing system. This is achieved by creating an electronic control system for the breathing system which converts all available parameters which affect the ongoing use of the breathing system and converting those parameters in a common basis of time remaining of practical use on the breathing system. The electronic system then combines the common parameters in time and combines as appropriate to produce a single time remaining parameter pertaining to the breathing machine operation. This approach is applied across rebreather and open circuit, land and water based systems such that an operator may use similar skills to interpret the output indications of different types of machines.

Claims

1. An electronic system for closed or semi-closed rebreathing devices comprising a microcontroller, inputs and sensors, display output device and power supply, wherein the microcontroller calculates the remaining usable system time based on at least two sensed inputs within the breathing system with a determined rate of use time factor for each input.

4. The system of claims 1, 2, and 3 wherein a single common system of minimum indication that uses the relevant parameters specific to different types of breathing systems is such that an operator may switch between different types of systems with the use of similar, simple information systems dealing only with time remaining on the system.

5. The system of claims 1, 2, and 3 wherein the microcontroller calculates the remaining usable system time additionally on at least one sensed environmental factor.

6. The system of claims 1, 2, and 3 wherein the microcontroller calculates the remaining usable system time additionally on at least one sensed biometric factor.

7. The system of claim 1 wherein a sensed input within the breathing system includes remaining carbon dioxide scrubber absorption capacity.

8. The system of claim 1 wherein a sensed input within the breathing system includes the measurement of Oxygen partial pressure within the breathing loop of the rebreathing system.

9. The system of claim 1 wherein a sensed input within the breathing system includes the sensed mechanical functionality of the solenoid.

10. The system of claim 1 wherein a sensed input within the breathing system includes sensed CO2 levels.

11. The system of claims 1, 2, and 3 wherein a sensed input within the breathing system includes battery level.

12. The system of claims 1, 2, and 3 wherein a sensed input within the breathing system includes the high pressure gas supply of the breathing.

13. The system of claims 1, 2, and 3 wherein a sensed input within the breathing system includes detected electronic measurement hardware functionality.

14. The system of claims 1, 2, and 3 wherein a sensed input within the breathing system includes detected electronic firmware functionality.

2. An electronic system for land based SCBA (Self Contained Breathing Apparatus) devices comprising a microcontroller, inputs and sensors, display output device and power supply, wherein the microcontroller calculates the remaining usable system time based on at least two sensed inputs within the breathing system with a determined rate of use time factor for each input.

3. An electronic system for water based SCUBA (Self Contained Underwater Breathing Apparatus) devices comprising a microcontroller, inputs and sensors, display output device and power supply, wherein the microcontroller calculates the remaining usable system time based on at least two sensed inputs within the breathing system with a determined rate of use time factor for each input.

15. The system of 5 wherein a sensed environmental factor includes external temperature.

16. The system of 5 wherein a sensed environmental factor includes external location.

17. The system of 5 wherein a sensed environmental factor includes external pressure.

18. The system of 6 wherein a sensed biometric factor includes body temperature.

19. The system of 6 wherein a sensed biometric factor includes breathing rate.

20. The system of 6 wherein a sensed biometric factor includes heart rate.

21. The system of 6 wherein a sensed biometric factor includes blood pressure.

22. The system of 6 wherein a sensed biometric factor includes stress level.

23. An electronic monitoring system for a breathing system which has:

A power supply to power a microprocessor circuit from a battery device;

A electronic circuit to measure Oxygen Levels in the breathing gas;

A electronic circuit to measure Battery Levels in the power supply;

A electronic circuit to measure high pressure gas levels;

A electronic circuit to measure CO2 scrubber capacity;

A electronic circuit to sense electronic hardware failures;

A electronic circuit to sense mechanical breathing system conditions;

A electronic circuit to measure operator body temperature;

A electronic circuit to measure operator heart-rate;

A electronic circuit to measure external temperature;

A electronic circuit to measure external pressure;

A microprocessor to connect and control the measurement and sense capabilities;

and provide a operable basis for firmware functionality.

24. A microcode module to process measurements and sensed conditions into numeric values representing those measurements.

25. A microcode module to detect and sense firmware and microcontroller failures and rates of those failures.

26. A microcode module to convert all sensed and measured conditions into time based factors based on the affect of those factors on the remaining ability of the breathing system to provide adequate life support.

27. A microcode module to combine all time factors into a single overall time based factor which is used as a measure of remaining usable time on the breathing system.