MAPLE SEED SENSOR HOUSING FOR DESERT RECONNAISSANCE Group

MAPLE SEED SENSOR HOUSING FOR DESERT RECONNAISSANCE Group 17: Clinton Bencsik Mark Brosche Christopher Kulinka Christopher Redcay FAMU-FSU College of Engineering

Overview Introduction Project Scope Design Concept Proposed Component Diagram Parts Needed Power Prototype Design Cost Analysis Conclusion

Project Scope Design a sensor vehicle to house a battlefield awareness network that can be dropped from any altitude. Project Requirements Design Specifications Survive a fall from a large height with sensors intact Make from a material with Young's Modulus >0. 8 GPa Hold a sensor array capable of detecting human and vehicle presence Design with infrared and vibration sensors to report disturbances Operate for several weeks without maintenance Use solar cells to recharge batteries or capacitors Auto-rotate during freefall similar to a maple seed Design as a scaled up maple seed with "seed" holding sensors Transmit data to a central network Design with an 802. 15. 4 g transmitter to send data

What is significant about a Maple seed? Wing on seed is a natural mechanism for dispersing seeds over a large area. Seeds “float” to the earth using auto-rotating flight Why a Maple seed? Simplifies design to avoid complex moving parts Produces a desirable spread pattern to monitor a large area

The Design Concept Single wing auto-rotating design Seed sensor housing (1) ○ ○ SDM manufactured Integrated sensors and controllers Integrated circuits Integrated transmitter and power source Wing with flexible solar cells (2) ○ Provides power to batteries ○ Curve and shape cause auto-rotation in flight Wing spine (3) ○ Provides support for the light, thin wing 1 3 2

The Design Concept Video Dramatization. Objects not to scale.

Proposed Component Diagram Power collected from solar cell. Energy stored in DC battery. Simultaneously senses infrared signals and ground vibrations. Sensor outputs directed to microcontroller. Signal transmitted to central unit.

Parts Needed Sensors a Power b Infrared sensor ○ Glolab IR module DP-001 Vibration sensor ○ SQ-SEN-200 Omni-directional tilt and vibration sensor (a) Flexible Solar cells (b) ○ 4. 5” x 1. 5” (3 V at 50 μA) Batteries ○ Vibration Sensor ○ CR-2032 (c) ○ Microcontroller ○ Infrared Sensor c

Power Vibration Sensor – Signal Quest ○ Voltage: 3 V ○ Voltage: 5 -20 V ○ Current: 5 m. A ○ Power: 0. 06 W Flexible Solar Cells – Silicon Solar ○ Dimensions: 4. 5” x 1. 5” ○ Voltage: Provides 3 V ○ Current: 50 m. A ○ Power: 0. 15 W Infrared Sensor – Glolab Microcontroller ○ Dimensions: 0. 5”x 0. 8” ○ Voltage: ? ?

Application of the Lift Equation to Auto-Rotating Wings

Obtaining the Final Equation We now combine the approximated lift equation with the simplified area to get lift as a function of length & Note: CI= lift coef. , ρ= air density , ω= angular velocity

Prototype Design

Fused Deposition Modeling Prototype Overall Length – 5. 8”, Seed Length – 1. 5”, Wing Width – 1. 75”

Prototype Video Actual Maple Seed in Flight Prototype Maple Seed in Flight

Cost Analysis Part # Qty. Cost 1 SDM Material 1 $10. 00 2 Flexible Solar Cells 2 $5. 50 3 Battery 1 $13. 95 4 Vibration Sensor 1 $4. 575 5 IR Sensor 2 $22. 95 6 Microcontroller 1 $1. 99 7 Description RF Transceiver Module 1 $8. 99 Total Cost Per Seed: $96. 405

Conclusion Exploded View 1 - Seed Body 2 - Solar Panel (2) 3 - IR Sensor (2) 4 - Vibration Sensor 5 - Battery, Microcontroller

References http: //www. signalquest. com/sq-sen-200. htm http: //www. siliconsolar. com/flexible-solar-panels-3 v-p-16159. html https: //www. ccity. ie/site/index. php? option=com_virtuemart&page=shop. browse&category_id=0&keyword=&manufacturer_id=0&Itemid=3&orde rby=product_name&limit=20&limitstart=100&vmcchk=1&Itemid=3 http: //www. amazon. com/exec/obidos/ASIN/B 000 X 27 XDC/ref=nosim/co ffeeresearch 23436 -20 http: //canalphotos. org/maple_seed%205 -12%20 tx. htm

Acknowledgement Dr. Jonathan Clark - FAMU/FSU College of Engineering Department of Mechanical Engineering ○ Use of the STRIDe Lab Mr. Matt Christensen – Harris Corporation Signal. Quest