Improved Robotic Arm and Turntable for Sensitivity Characterization of Occupancy Sensors

1. Improved Robotic Arm and Turntable for Sensitivity Characterization of Occupancy Sensors Turntable Team Robotic Arm Team Sam Garza Anne Killough Bob Ramenofsky Havan Tucker Will Hedgecock Brian Auerbach John Sullivan

2. Sponsor Information • Saves energy by minimizing unused light • Detects major motion in rooms up to 1000 sq. ft. using PIR

3. Current Testing Procedure Simulate the testing room by rotating the sensor and setting the robotic arm at various locations in the coverage pattern. (Measurements in feet)

4. Project Description • Improve current testing procedure • Automate testing procedures within NEMA constraints • Improve Arm • Emit IR spectrum similar to that of human arm • Provide more stable arm • Less “jitter” when starting/stopping • Can be held in any position for over an hour

5. Operational Concept

6. Command and Control Interface Turntable Controls Robotic Arm Controls AutomatedTesting Grid

7. Functional Flowchart

8. Robotic Arm Assembly Overview

9. Hardware Overview 1 NetBurnerMOD5272 DevKit 4 Silicone Rubber Heaters 4 Solid State Relays 1 OMEGA 1504 Multi-loop PID 1 120VAC Variable Transformer 2 Open-loop direct-drive steppers 1 Roll of Electrical Tape

10. Infrared Background Information

11. Thermal Proof of Concept

12. Turntable Assembly Overview

13. Turntable Microcontroller • Responsibilities • Maintain communications with the computer • Control the servo motor • Keep track of the status of the relay

14. Turntable Hardware Motor • Hitec HS645MG servo motor • 107 oz-in. of torque at 4.8 V • Dual ball bearing design • Weighs 1.94 oz. Sensor Mount • Indoor single gang box • PVC construction Cart • Buhl BAV-4226C compact AV cabinet cart • 42’’ tall