Automated Thermal Control Attenuating Device

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Abstract presentation of automated fluid direction control with solenoid valve system

Abstract presentation of automated fluid direction control with solenoid valve system

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  • Problems to overcome Allows the user to select water source and change quickly between the two Valves redirect flow of pump not being used back to pump to prevent burning out the pump Allows control of flow to individual body parts
  • Problems to overcome Allows the user to select water source and change quickly between the two Valves redirect flow of pump not being used back to pump to prevent burning out the pump Allows control of flow to individual body parts
  • Problems to overcome Allows the user to select water source and change quickly between the two Valves redirect flow of pump not being used back to pump to prevent burning out the pump Allows control of flow to individual body parts

Transcript

  • 1. Student: Tyler Humphrey
    Advisor: Dr. Michael Dancisak
    Automated Thermal Control Attenuating Device
  • 2. Liquid Cooling/ Warming Garments
    Most are vests and suits designed to control core body temperature1
    Have been used recently to delay muscle fatigue and decrease heat injury occurrences of individuals working in extreme environments
    CAMS developed sleeves or wraps used for particular body parts or muscle groups
    EMS treatment of nerve trauma patients2
    Lowers core temperature prevents apoptosis of nerve cells
    Reduces cell death cascade in CNS
  • 3. Pre-Cooling and Intermittent Cooling
    Precooling
    Decreasing an individual’s core body temperature below 37 degrees Celsius before intense activity3
    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
    Increases time before an individual experiences heat stress5
    Intermittent Cooling
    Cooling in between periods of intense activity
    Offsets muscle fatigue3
    Lowers the concentration of Lactic Acid and HCO3 in muscles4
  • 4. LCWG Design
    Uses two separate temperature controlled water reservoirs and pumps
    Allows user to switch between two temperatures quickly
    Each area of the suit has its own inlet and outlet hose
    Allows each area to be chilled independently
    Controlled by a series of solenoid valves connected to a manifold
    CAMS Liquid Cooling Sleeve- Photo courtesy of New Wave Controlling Body Temperature May Fight Fatigue , Kathryn Hobgood 2009
    • Can be used for medical, labor, or athletic purposes
    • 5. Reducing surgeon hand tremor
    • 6. Bombsquad Technicians, Hazmat Workers
  • Solenoid Valve Control Schematic
    MANIFOLD
  • 7. Solenoid Valve Control Schematic
    MANIFOLD
  • 8. Solenoid Valve Control Schematic
    MANIFOLD
  • 9. LabView Interface
    CAMS AUTOMATED VALVE CONTOL INTERFACE
    36.9
    Manual Control
    15.5
    41.5
  • 10. Electronic Schematic
    - Solenoid Valve
  • 11. Valve Housing
  • 12. Future Direction of Project
    Temperature history on control panel
    Use of thermo-couple readings to develop a more accurate thermo-profile
    Allows adjustments to be made depending on an individual’s therm0-profile
    Digital Control of Chillers
    Use of both Chilling units at the same time
    Cooling one area while warming another
    Medical/Surgical applications
  • 13. Acknowledgements
    I would like to thank Dr. Dancisak and James Barrios for the collective effort in the development of this project.
    I would also like to thank the Tulane department of Biomedical Engineering for all of the help and guidance over the years.
  • 14. References
    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.
    Molecular Mechanisms Underlying Hypothermia-Induced Neuroprotection , Shintani, Yasushi / Terao, Yasuko / Ohta, Hiroyuki , Stroke Research and Treatment, 2011,Dec 2010
    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
    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.
    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