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Automated Thermal Control Attenuating Device

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Abstract presentation of automated fluid direction control with solenoid valve system

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Automated Thermal Control Attenuating Device

  1. 1. Student: Tyler Humphrey<br />Advisor: Dr. Michael Dancisak<br />Automated Thermal Control Attenuating Device<br />
  2. 2. Liquid Cooling/ Warming Garments<br />Most are vests and suits designed to control core body temperature1<br />Have been used recently to delay muscle fatigue and decrease heat injury occurrences of individuals working in extreme environments<br />CAMS developed sleeves or wraps used for particular body parts or muscle groups<br />EMS treatment of nerve trauma patients2<br />Lowers core temperature prevents apoptosis of nerve cells<br />Reduces cell death cascade in CNS<br />
  3. 3. Pre-Cooling and Intermittent Cooling<br />Precooling <br />Decreasing an individual’s core body temperature below 37 degrees Celsius before intense activity3<br />Usually for a long period (30 min-1 hr) of active cooling followed by a short period (10-15 min)of inactive resting before intense activity3<br />Increases time before an individual experiences heat stress5<br />Intermittent Cooling<br />Cooling in between periods of intense activity<br />Offsets muscle fatigue3<br />Lowers the concentration of Lactic Acid and HCO3 in muscles4<br />
  4. 4. LCWG Design<br />Uses two separate temperature controlled water reservoirs and pumps <br />Allows user to switch between two temperatures quickly<br />Each area of the suit has its own inlet and outlet hose<br />Allows each area to be chilled independently<br />Controlled by a series of solenoid valves connected to a manifold<br />CAMS Liquid Cooling Sleeve- Photo courtesy of New Wave Controlling Body Temperature May Fight Fatigue , Kathryn Hobgood 2009<br /><ul><li>Can be used for medical, labor, or athletic purposes
  5. 5. Reducing surgeon hand tremor
  6. 6. Bombsquad Technicians, Hazmat Workers</li></li></ul><li>Solenoid Valve Control Schematic<br />MANIFOLD<br />
  7. 7. Solenoid Valve Control Schematic<br />MANIFOLD<br />
  8. 8. Solenoid Valve Control Schematic<br />MANIFOLD<br />
  9. 9. LabView Interface<br />CAMS AUTOMATED VALVE CONTOL INTERFACE<br />36.9<br />Manual Control<br />15.5<br />41.5<br />
  10. 10. Electronic Schematic<br />- Solenoid Valve<br />
  11. 11. Valve Housing<br />
  12. 12. Future Direction of Project<br />Temperature history on control panel<br />Use of thermo-couple readings to develop a more accurate thermo-profile<br />Allows adjustments to be made depending on an individual’s therm0-profile<br />Digital Control of Chillers<br />Use of both Chilling units at the same time<br />Cooling one area while warming another<br />Medical/Surgical applications<br />
  13. 13. Acknowledgements<br />I would like to thank Dr. Dancisak and James Barrios for the collective effort in the development of this project.<br />I would also like to thank the Tulane department of Biomedical Engineering for all of the help and guidance over the years.<br />
  14. 14. References<br />5. S. H. Constable, P. A. Bishop, S. A. Nunneley, and T. Chen, Intermittent Microclimate Cooling During Rest Increases Work Capacity and Reduces Heat Stress (Ergonomics, 1994), p. 227-285.<br />Molecular Mechanisms Underlying Hypothermia-Induced Neuroprotection , Shintani, Yasushi / Terao, Yasuko / Ohta, Hiroyuki , Stroke Research and Treatment, 2011,Dec 2010<br /> S. H. Bomalaski, Y. T. Chen, and S. H. Constable, Continuous and Intermittent Personal Microclimate Cooling Strategies (Aviation, Space, and Environmental Medicine, August 1195), p. 745-750<br />Nielsen, B., Savard, G., Richter, E. A., Hargreaves, M., & Saltin, B. (1990). Muscle Blood-Flow and Muscle Metabolism During Exercise and Heat-Stress. Journal of Applied Physiology, 69: 1040-1046.<br />Effect of pre-cooling, with and without thigh cooling, on strain and endurance exercise performance in the heat,J.D. Cottera,􏰅, G.G. Sleivertb, W.S. Robertsa, M.A. Febbraio<br />