Hypoxia, Monitoring, and Mitigation System
Abstract
The concentrated effort on the literature search activity (Task 1) has been completed. . Reasonably so, this task really never ends as new works constantly will be published or become available through professional connections. A File Transfer Protocol (FTP) site has been created to share references and data among the team members and Office of Naval Research (ONR). As data and additional information becomes available or uploaded to the FTP site we will address them as necessary. The baseline parametric hypoxia modeling effort (Task 2) has been completed. A model to predict %O2 saturation, aircrew state, alveolar pressure of oxygen (PaO2) and alveolar pressure of carbon dioxide (PaCO2) has been converted over to the C programming language. This will allow the algorithm to eventually run on a micro-controller. Additionally the time based algorithms have been adjusted to better represent the physiological response of the human to high altitude hypoxic events. The conversion of the United States Navy (USN) Consciousness Model (Task 3) has been completed. Initial verification and sensitivity analysis has shown positive results and the code has been reduced to a size and complexity that will run on a modest microcontroller. The addition of a hypoxia component to the acceleration component of the model has demonstrated good results. Model and threshold refinement will continue with additional data sets in Task 4. The final baseline task (BETA Model Software Development/Definition Task 4) has been started. Software algorithms will be developed through three sequential iterations that will progressively refine a prediction for hypoxia and near-hypoxia conditions. The focus on implementation in a memory-limited, bit-constrained microcontroller will remain a top priority. For each iteration the algorithms and software will be evaluated using existing data. We recommend that the program continue as scheduled assuming the remaining funding is obligated to the contract.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 01, 2014
- Accession Number
- ADA596234
Entities
People
- Sean J. Mahoney