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Team RAPTORS 3/2/2010 1 Team RAPTORS REMOTE AVIONICS PACKET TRANSCEIVER WITH OBSERVATIONAL REAL-TIME SENSING Joe Trefilek Jeff Kubascik Paul Scheffler Matt Rockey Project Overview Remotely operated drone aircraft with a real Remotely operated drone aircraft with a real Remotely operated drone aircraft with a real Remotely operated drone aircraft with a real- time flight data acquisition system. time flight data acquisition system. time flight data acquisition system. time flight data acquisition system. Custom radio transceiver and sensing Custom radio transceiver and sensing Custom radio transceiver and sensing Custom radio transceiver and sensing equipment will relay inertial and navigation equipment will relay inertial and navigation equipment will relay inertial and navigation equipment will relay inertial and navigation data. data. data. data. Data transmitted to ground station and Data transmitted to ground station and Data transmitted to ground station and Data transmitted to ground station and displayed onscreen in real displayed onscreen in real displayed onscreen in real displayed onscreen in real-time. time. time. time. The ground station will also send control The ground station will also send control The ground station will also send control The ground station will also send control commands from a pilot to the aircraft. commands from a pilot to the aircraft. commands from a pilot to the aircraft. commands from a pilot to the aircraft. 3/2/2010 Team RAPTORS 2

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Page 1: Design Review print - engineering.purdue.edu€¦ · 3/2/2010 Team RAPTORS 8. Team RAPTORS 3/2/2010 5 Packaging Design –Ground Station 3/2/2010 Team RAPTORS 9 • Less restricted

Team RAPTORS 3/2/2010

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Team RAPTORSREMOTE AVIONICS PACKET TRANSCEIVER WITH OBSERVATIONAL REAL-TIME SENSING

Joe TrefilekJeff Kubascik

Paul SchefflerMatt Rockey

Project Overview

• Remotely operated drone aircraft with a realRemotely operated drone aircraft with a realRemotely operated drone aircraft with a realRemotely operated drone aircraft with a real----time flight data acquisition system. time flight data acquisition system. time flight data acquisition system. time flight data acquisition system.

• Custom radio transceiver and sensing Custom radio transceiver and sensing Custom radio transceiver and sensing Custom radio transceiver and sensing equipment will relay inertial and navigation equipment will relay inertial and navigation equipment will relay inertial and navigation equipment will relay inertial and navigation data. data. data. data.

• Data transmitted to ground station and Data transmitted to ground station and Data transmitted to ground station and Data transmitted to ground station and displayed onscreen in realdisplayed onscreen in realdisplayed onscreen in realdisplayed onscreen in real----time.time.time.time.

• The ground station will also send control The ground station will also send control The ground station will also send control The ground station will also send control commands from a pilot to the aircraft.commands from a pilot to the aircraft.commands from a pilot to the aircraft.commands from a pilot to the aircraft.

3/2/2010 Team RAPTORS 2

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Project-Specific Success Criteria

1. An ability to wirelessly transmit and receive packet data.

2. An ability to relay aircraft position and orientation utilizing inertial and navigational sensors.

3. An ability to capture images and relay them serially to the ground station.

4. An ability to control the aircraft servo motors via a microcontroller interface.

5. An ability to amplify an RF signal to 1 watt PEP of transmission power.

3/2/2010 Team RAPTORS 3

Block Diagram

3/2/2010 Team RAPTORS 4

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Major Components

• Microcontroller: PIC24FJ256GB106

• RF Transceiver: CC1101

• Camera: SEN-09334

• GPS: GPS-08975

• 3-Axis Accelerometer: SEN-00252

• 2-Axis Gyroscope: SEN-09413

• Barometric Pressure Sensor: SEN-08161

3/2/2010 Team RAPTORS 5

Microcontroller Selection

Microchip PIC24FJ256GB106

• Extensive development experience

• Excellent debugging support

• Meets peripheral requirements

• 64 pin TQFP

3/2/2010 Team RAPTORS 6

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RF Transceiver Selection

Texas Instruments CC1101

• Date rate up to 500 kbps

• Amateur band: 420-450MHz

• Greater propagation distance

• Must comply with Part 97 of FCC Regulations

• Maximum power transmission 1W PEP (Section 97.215)

• Amateur radio operator license required

3/2/2010 Team RAPTORS 7

Packaging Design – Aircraft

3/2/2010 Team RAPTORS 8

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Packaging Design – Ground Station

3/2/2010 Team RAPTORS 9

• Less restricted than aircraft

• Must be portable and reasonably rugged for field use

• Diecast aluminum box; acts as ground plane and provides RF shielding

• 6.73” x 4.76” x 3.98”

• Powered by external 7.5 V Battery

• USB Port on one side

• Antenna and Status LEDs on top

Schematic – Power Supply

3/2/2010 Team RAPTORS 10

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Schematic – µC

3/2/2010 Team RAPTORS 11

Schematic – Servo Control

3/2/2010 Team RAPTORS 12

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Schematic – RF Transceiver Section

3/2/2010 Team RAPTORS 13

Schematic – RF Amplifier Section

3/2/2010 Team RAPTORS 14

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Schematic – Sensor Board

3/2/2010 Team RAPTORS 15

PCB Layout – Power Supply

3/2/2010 Team RAPTORS 16

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PCB Layout – µC and Servo Control

3/2/2010 Team RAPTORS 17

PCB Layout – RF Section

3/2/2010 Team RAPTORS 18

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PCB Layout – Sensor Board

3/2/2010 Team RAPTORS 19

Software - Preliminary Design

3/2/2010 Team RAPTORS 20

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Software – Development Status

• Most computation intensive – Kalman filter

– Researched

– Open-source skeleton algorithm found

– Variable location: Ground or Plane uC

• Second greatest – Sensor interfacing

– Preliminary pseudocode created for all protocols

and handshaking

3/2/2010 Team RAPTORS 21

Product Launch Timeline

3/2/2010 Team RAPTORS 22

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Things Yet to Come…

• Mounting holes for standoffs (layout)

• Add More Descriptive Connector Labels to

the silkscreen for the off-board Connectors

3/2/2010 Team RAPTORS 23

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