Solar Car CAN Development

1

• Solar Car CAN Development
• Senior Design Project
• Mike Cornelison
• Beau Eckermann
• David Last
• Aaron Steiner
• Luke Stewart
• Brian Whitehouse

2
Outline

• Project Overview
• Hardware Status
• Software Status
• Future Work
• End Goals

3
Problem Description

• Improve method of communication between
  subsystems of AU solar car
• Allow driver access to new features such as turn
  indicators, trip odometer, cruise control, etc.
• Provide driver and chase vehicle (via wireless
  modem) with real-time system information
• Improve vehicle safety by implementing a safe
  mode for powering down in the event of a system
  fault

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Overhead Car Diagram
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Network Architecture
CAN NETWORK
Steering Interface µController Module
Display Interface µController Module
Motor Interface µController Module
Driver Display
Driver Inputs
Motor Controller
Battery Protect Circuit
Vehicle Controls
Signal Controller
Sensor Inputs
Wireless Modem
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Hardware Status

• Board layout almost complete
• Generic board for all the nodes
• Node-specific characteristics in software
• Using the 80-pin package for the MC9S12
• Need access to more IO pins
• High-density header
• Break out signals to different devices

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Hardware Schematic
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Hardware Fabrication

• Goal hardware ready for fabrication by Spring
  Break
• Hand off design to Joe Haggerty for fabrication
• Test hardware after Spring Break

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Software

• CAN communication
• Analog-to-Digital conversion
• Push button interrupts
• RS-232 communication
• Timers
• Display

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Software
Optrex 20x4 LCD display
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Future Work

• Node formation for each subsystem
• CAN message hierarchy
• RS-232 packetization of streaming data
• Safe Mode implementation

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End Goals

• Manufactured boards for each node using surface
  mount components
• Software for each node implementing
  system-specific code design
• Detailed documentation of project progression

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• Questions?