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Predictive Indicator System for CO2 Scrubber Endurance
Case ID:
6583
Web Published:
9/7/2012
Description:
Non-hygroscopic soda lime is used to remove exhaled carbon dioxide (CO
2
) in closed circuit breathing apparatus.
As a diver exerts him/herself while swimming, the soda lime in the scrubber canister will gradually be used up until it is no longer capable of absorbing more CO
2
.
This results in the dangerous medical condition of hypercapnia (abnormally high CO
2
concentration in the body).
The present invention uses a microcontroller and sensors to continuously monitor the rate of soda lime usage and calculates the available remaining dive time.
The remaining time (in hours and minutes), continuously adjusting for changes in physical activity, is presented to the diver via his/her dive computer display or a
display in the facemask.
Importantly, the system’s memory allows the diver to use the equipment for repeat dives, relying on yet unused CO
2
absorbing capacity.
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Category(s):
Instrumentation
Sensors
Engineering
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For Information, Contact:
Michael Fowler
Commercialization Manager
University at Buffalo
716-645-8136
mlfowler@buffalo.edu
Inventors:
Clas E Lundgren
Ronald Okupski
Keywords:
Technology
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