HMI System for Solar Powered Race Car

Eugene GordonMohit MendirattaJevon RaghubirMarch 14, 2011

ECE 4007L01 - Dr. Whit Smith

Project Overview• Design and create HMI system for

solar vehicle     • Implement in Solar Jackets' solar

car for World Solar Challenge  •  Expected Cost: $260

ECE 4007L01 - Dr. Whit Smith

Design Objectives

• Display vital car and motor information

• Create an API for other Solar Jacket groups

•  Focus on driver

ECE 4007L01 - Dr. Whit Smith

Design Illustration

ECE 4007L01 - Dr. Whit Smith

SBC (TS-7250)

ECE 4007L01 - Dr. Whit Smith

USB-to-GPIO (UM 245R)

ECE 4007L01 - Dr. Whit Smith

LCD (DOGM-128)

ECE 4007L01 - Dr. Whit Smith

Example Speed Displays

ECE 4007L01 - Dr. Whit Smith

Protocol Stack

ECE 4007L01 - Dr. Whit Smith

Functions A (Speed, Temp, Battery, etc.)

Functions B (PutText, PutBar, PutNeedle, etc)

Convert to software Bitmap

Put Bitmap on USB from SBC

Put Bits on LCD from USB

Project Status

ECE 4007L01 - Dr. Whit Smith

•Communication with SBC•Issues setting up USB drivers

•Ran C code on SBC•Set up Linux environment•Crosstool for TS-7250

•Established API concept

Acceptance Testing

• Confirmation of SBC functionality– Transfer files via HyperTerminal– Executed simple C programs on SBC

• Confirmation of USB-to-GPIO recognition– Confirmed USB recognition on the SBC, yet no

native driver can be assigned for communication

ECE 4007L01 - Dr. Whit Smith

Milestones

ECE 4007L01 - Dr. Whit Smith

•USB-to-GPIO module communication•03/18/2011

•C function to bitmap (in software) speed display•03/31/2011

•PCB Construction•04/08/2011

•Functionality Testing•04/15/2011

Cost Analysis

ECE 4007L01 - Dr. Whit Smith

Questions?

ECE 4007L01 - Dr. Whit Smith