Property Surveillance UAV Team Midsemester Presentation Senior Design II

Juan Sanchez Computer Engineer Team Leader Travis Priest Electrical Engineer Jamal Brown Computer Engineer Thomas Hartzler Electrical Engineer Jenny Du Ph.D. Electrical Engineering

Overview  Problem  Solution  System Overview  Constraints  Technical  Practical  System Testing  Summary and Remaining Tasks  Q&A

Problem Surveillance of large properties, such as farms, can only be done physically or through the use of expensive camera systems.

Solution An autonomous property surveillance system that consists of a quadcopter outfitted with a camera for video surveillance purposes.

System Overview UAV Base Station

Design Constraints

Technical Constraints NameDescription Transmission Distance The UAV’s transmitter/receiver must be able to transmit/receive within at least a 700 m unobstructed view. Operating Height The UAV must operate under 61 m depending on obstacles present on the property (e.g. power lines, trees, buildings). Persistence The quadcopter’s battery must have a life span of around 15 min. per flight and must operate at a speed of at least 4.5 m/s. Lift/Weight Ratio The UAV must be able to produce 6 kgs. of lift, providing a 2:1 lift ratio. Video Resolution The video transmitter must provide a video resolution of at least 640x480 pixels (standard resolution).

Practical Constraints NameDescription Safety and HealthThe Watchdog UAV may turn into a dangerous projectile if it were to malfunction mid-flight; precautions for this must be taken. EthicalThe system is strictly for the use of private property surveillance and must operate under any Federal Aviation Administration legal guidelines.

Safety And Health Lethal projectile Excessive altitudes 61 meters operational height limit Fail-safe mechanisms Disposal of lithium ion battery

Ethical Private property surveillance ONLY! Federal Communications Commission (FCC) guidelines Federal Aviation Administration (FAA) guidelines 122 meters max No operation near airports IEEE Code of Ethics must be followed

System Testing

Linux Windows Before: Mission Planner on Linux was very unstable Secondary PC was used to complete the system Now Server hosting moved to a Windows PC Along with video capture and streaming (in progress) Lead to more efficient scripts the server is handling Launch delay time from 47 to 35 seconds Software improvements (in progress)

New Antennas Video Transmitting Bipolar Circular Polarized Telemetry Transmission Bipolar Circular Polarized Overall increase range [1] [2]

Charging Station Due to the complexity and the dangers of charging lithium-ion polymer batteries, smaller charger will be created as a proof of concept. Video transmitter battery Dual-cell 7.4V lithium-ion polymer

Microchip MCP73842 Charges single or dual cell Lithium-Ion/Lithium-Polymer battery packs 10-pin package: equipped with shutdown control, status indicator, safety timer, and continuous cell temperature monitor Provides constant current and voltage charging

Charging Station Schematic

Charging Station PCB Design

PCB Parts List ComponentRatingQuantity Resistor1.5k2 Resistor100k1 Resistor7.32k1 Resistor6.19k1 Resistor390m1 Capacitor4.7uF2 Capacitor0.33uF1 IC ChipMCP LEDRED1 LEDGREEN1 TransistorIRLMS67021

Remaining Tasks Construct product enclosure Submit files and order PCB Manufacture/Test charging station Software Improvements Final Packaging of the product

Timeline JanuaryFebruaryMarchAprilMay PCB Design Software Debugging Purchasing PCB Testing Final Packaging

References [1] "5.8 GHz SpiroNET Omni SMA Antenna Set (RHCP)." RSS Specials. N.p., n.d. Web. 03 Mar [2]"Boscam 5.8gHz 3dBi Antenna RP-SMA." HobbyKing Store. N.p., n.d. Web. 03 Mar

Property Surveillance UAV System Juan Sanchez Travis Priest Jamal Brown Thomas Hartzler