Property Surveillance UAV TeamMidsemester PresentationSenior Design II

Juan SanchezComputer Engineer

Team Leader

Travis PriestElectrical Engineer

Jamal BrownComputer Engineer

Thomas HartzlerElectrical Engineer

Jenny DuPh.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.

The Watchdog UAV

System OverviewUAVBase

Station

Design Constraints

Technical ConstraintsName Description 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

Name Description

Safety and Health The Watchdog UAV may turn into a dangerous projectile if it were to malfunction mid-flight; precautions for this must be taken.

Ethical The 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

Component Rating Quantity

Resistor 1.5k 2Resistor 100k 1Resistor 7.32k 1Resistor 6.19k 1Resistor 390m 1Capacitor 4.7uF 2Capacitor 0.33uF 1IC Chip MCP73842 1LED RED 1LED GREEN 1Transistor IRLMS6702 1

Remaining Tasks

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

Timeline

January February March April May

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. 2014.[2] "Boscam 5.8gHz 3dBi Antenna RP-SMA." HobbyKing Store. N.p., n.d. Web. 03 Mar. 2014.

Property Surveillance UAV System

Juan Sanchez Travis Priest

Jamal Brown Thomas Hartzler