System Design Review P10231 - UAV Telemetry R09230 Project Family - - PowerPoint PPT Presentation

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System Design Review P10231 - UAV Telemetry R09230 Project Family - - PowerPoint PPT Presentation

System Design Review P10231 - UAV Telemetry R09230 Project Family Chris Barrett Project Manager Gregg Golembeski Interface Manager Alvaro Prieto Radio Concepts Cameron Bosnic Software Concepts Daron Bell Power Concepts Friday, January


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System Design Review

P10231 - UAV Telemetry Chris Barrett Project Manager Gregg Golembeski Interface Manager Alvaro Prieto Radio Concepts Cameron Bosnic Software Concepts Daron Bell Power Concepts

R09230 Project Family

1 Friday, January 22, 2010

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SLIDE 2

Mission Statement Customer Needs Deliverable Summary System Design Radio Concepts Data Interface Concepts Power Concepts Mounting Concepts Software Concepts Risk Assessment

Outline

2 Friday, January 22, 2010

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Mission Statement

The goal of this project is to create an open source, multi platform, bidirectional telemetry system.

Carried on UAV Airframe C Interface with Control System(P10236) Send flight data to ground Remotely Trigger On-Board Camera

3 Friday, January 22, 2010

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Customer Needs

Customer Need # Importance Description

CN1 1 Works during full flight environment CN2 1 Compatible with Airframe C and supporting hardware (P10232/P10236) CN3 1 Transmits data in real time CN4 1 Displays all relevant flight data on computer CN5 1 Works over entire possible range / time of flight CN6 2 Can survive a crash landing CN7 1 Must support bi-directional communication CN8 1 Multi-platform desktop software CN9 1 Open source software and interfaces CN10 2 Send GPS waypoints to UAV CN12 2 Control actuators / servos from ground CN13 1 Displays hardware / software diagnostics

4 Friday, January 22, 2010

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Deliverables

http://www.eagletreesystems.com/Plane/7.htm

Wireless System for Bidirectional Communication

between control system and ground PC

GUI Application that displays flight data

multi platform, open-source, in real-time

5 Friday, January 22, 2010

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System Design

6 Friday, January 22, 2010

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Radio Concepts

Goals:

Two radios that send and receive data with high throughput and data integrity. The radios should be transparent to both the control system and base station as if it were a physical connection. This “radio as a wire” concept allows interchangeability of various radios using different wireless technologies.

Feasibility:

If one radio technology does not meet our requirements, the “radio as a wire” concept allows us to drop in another solution without disrupting the data interfaces.

7 Friday, January 22, 2010

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Radio Concept Selection

WRL-00559 Cellular Modem ConnexLink CL4790-1000 Digi Xtend XTend-PKG-R WRL-00559 Cellular Modem ConnexLink CL4790-1000 Digi Xtend XTend-PKG-R

Cost Range Size Frequency Weight Power Consumption Power Requirements Interface Transfer Speed Meets FCC Regulations Other

+

  • $90 for 1

$599 for 1 + monthly fee $112 for 1 $299 for 1

  • +

+

1500m virtually unlimited (within tower range) 20 miles 40 miles

+

38x53x10mm 76x25x92mm 111x69x36 mm (4.4 x 2.7 x 1.4 inches) 139.7x69.9x28.6 mm (5.5 x 2.75 x 1.13 inches) 915MHz GPRS Quad Band (850/1900 and 900/1800 MHz) 902 - 928 MHz 902 - 928 MHz

+ +

  • 160g

6oz (170g) 7.10 oz (200 g)

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120/120 mA @ 12V 400mA TX, 40mA RX @12V 900mA @ 9V

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5VDC 6-28VDC 12V DC 7 - 28V RS-232 RS-232/USB RS-232 RS-232

  • 9600bps

60 to 80 kbps uplink and 70 to 135 kbps downlink Up to 115.2 Kbps up to 115.2 Kbps Yes Yes Both licensed and unlicensed modes Yes

  • Included

Hardware

8 Friday, January 22, 2010

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Data Interface Concepts

PC <-> Radio Radio <-> Control System

Reliabi liability Data Thr hroughput Industry S stry Standard Maintain tainability Bi-Directional C l Communication Compatible with Da Data Packet Structure Guarantee Data Integrity Th Throughout Flight Conditions

Compatible with ALL Target PC Platforms Compatible with Control System I/O Compatible with Ground Radio Interface Compatible with Aerial Radio Interface

Feasibility:

The concepts explored for data interfaces are all industry standards that are designed for reliable serial communication.

9 Friday, January 22, 2010

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SLIDE 10

Data Interface

Concept Selection

I^2C UART Speed Reliability Compatibility Maintainability

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  • RS-232

USB Parallel Port Bluetooth Speed Reliability Maintainability Compatibility

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10 Friday, January 22, 2010

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Power Concepts

Power solution must...

not interfere with other on-board power systems. reduce costs and increase convenience. sustain radio communication throughout flight time.

Feasibility:

One or more of the power solutions explored is within our anticipated specifications such as, current draw, weight & size.

11 Friday, January 22, 2010

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Power Concept Selection

Shared Power Alkaline Lead acid Li-ion Ni-Cd NiMH

Cost Weight Running Time Size Amperage Supply Charge Time Nominal Charge Recharge Durability

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12 Friday, January 22, 2010

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Mounting Concepts

The Mounting and Packaging solution must...

securely attach the aerial radio and power systems to UAV C. provide protection to onboard components in the event of a hard landing. add minimal weight to the system. add minimal size to the system. allow for easy access to components.

Feasibility:

Based on the aerial radio, power system, and airframe interface concepts explored, a mounting system well within our size and weight constraints is possible.

13 Friday, January 22, 2010

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Mounting & Packaging

Concept Selection

Velcro Bolts Adhesive Zip-Ties Straps

Cost Weight Efgectiveness Integration

+ + + + + +

  • +
  • Hard

Casing Pick and Pack Foam Convoluted Foam Plank Foam Bubble wrap

Weight Size Cost Protection Heat Dissipation

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14 Friday, January 22, 2010

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Mounting & Packaging

Concept

15 Friday, January 22, 2010

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Software Concepts

Software application must...

track and log UAV control variables. support multiple computing platforms. report all flight data through a visual interface.

Feasibility:

maintain open source concepts. refresh at acceptable rate. allow maintainability. transmit remote shutter command.

With intelligent language selection and efficient code design, any modern computing platform* will be able to handle the application requirements.

* Minimum: 1GHz, 512mb RAM, 40mb HD space, Open-GL 3D graphic support

16 Friday, January 22, 2010

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Software Design

17 Friday, January 22, 2010

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Programming Language

Selection

MATLAB Qt/C++ Java C Assembly LabView

Team Comfort Level Maintainability Speed Platform Compatibility Licensing Ease of GUI Design

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18 Friday, January 22, 2010

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Risks

  • Exceeding maximum weight requirements
  • Exceeding maximum size (volume) requirements
  • Unable to meet power requirements within weight, cost, size

constraints

  • Meeting Flight Time requirement
  • Shipping delays for needed parts
  • Defective components from 3rd party
  • Unanticipated radio interference
  • Data corruption (design documents, etc.)
  • Loss of team member
  • Unable to meet desired software performance (refresh rate)
  • Aerial system overheating

19 Friday, January 22, 2010