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Energy Harvesting for Self-Contained Wireless Sensor Modules Week 7

Agenda. Statement of WorkGantt ChartTasks CompletedTechnical ContentSummary. 2. Statement of Work. Project FeaturesRefine experimental methods developed during previous quarterTest commercially available energy harvesting modulesDesign and integrate with energy storage circuitrySpecification

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Energy Harvesting for Self-Contained Wireless Sensor Modules Week 7

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    1. Energy Harvesting for Self-Contained Wireless Sensor Modules (Week 7) Group 4: Atsushi Ohoka Saheed O. Inawo Vladimir Sadoma 1

    2. Agenda Statement of Work Gantt Chart Tasks Completed Technical Content Summary 2

    3. Statement of Work Project Features Refine experimental methods developed during previous quarter Test commercially available energy harvesting modules Design and integrate with energy storage circuitry Specifications Incorporate real-world elements into experiment setup Define practicality for each harvesting method Deliverables Efficiency rates for all energy harvesting methods tested Working circuit prototype of most efficient model Resources EBUI and EBUII labs for assembly and test Equipments from previous quarter 3

    4. Gantt Chart 4

    5. Tasks Completed Started thermal energy harvesting Prepared thermal energy harvesting module for better heat isolation Set up experiment in EBU I Made dry ice with an Insta-lce dry ice machine (from USA Restaurant Equipment ) Verified operation of thermal module 5

    6. Technical Content 6

    7. Experimental Setup Heat source – sea sand on hot plate Cold source – dry ice chunks Voltage output reading Across 1kO load No load was applied during previous qtr. Temperature reading Thermistors Thermocouple meter Technical Content Cont’d 7

    8. Technical Content Cont’d 8

    9. Technical Content Cont’d Disucssion Cont’d Temperature difference can signi-ficantly affect the output voltage Previous Qtr. ? 4°C This Qtr. ? 126.4°C Power dependence on ?T 9

    10. Technical Content Cond’d Discussion Cont’d Square dependence of power on temp. is not realistic Spatial variation ? non-uniform current in different regions of module ? low temp. difference in one region can limit performance Non-ideal heat isolation and measurements 10

    11. Summary Started thermal energy harvesting Data collection is still incomplete Showed and discussed comparison with previous quarter’s results Considered improvements and refined experimental setup 11

    12. Plans for Next Week! Continue experiment on thermal energy harvesting (TEH) Obtain better results Revisit piezoelectric energy harvesting for better analysis 12

    13. Questions? 13

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