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Team 3: Calvin CruiseAdaptive Cruise Control
SystemENGR 340
April 13, 2007
Outline
Introduction of Project The Big Picture – Design Norms System Requirements System Design Testing Questions
Outline • Introduction • Design Norms • Requirements • Design • Testing
INTRODUCTION OF PROJECT
Introduction – The Team
Nate Sportel • Erik Barton • Bryan Bandstra • Chris Vonk • Nate Barker
Outline • Introduction • Design Norms • Requirements • Design • Testing
Introduction – Project Overview
Detects the distance and speed of forward vehicles
Changes the cruise speed of the equipped vehicle
Information displayand push buttoninterface
Design an Adaptive Cruise Control System
Outline • Introduction • Design Norms • Requirements • Design • Testing
THE BIG PICTURE – DESIGN NORMS
The Big Picture – Design Norms
Transparency Easy to use
Small learning curve Minimal attention required from user
during operation Robust and reliable
Functions reliably and accurately in varied weather and temperature conditions
Outline • Introduction • Design Norms • Requirements • Design • Testing
The Big Picture – Design Norms
Stewardship Increased fuel economy
Improve on existing cruise control systems Reduce sharp acceleration and
deceleration
Outline • Introduction • Design Norms • Requirements • Design • Testing
SYSTEM REQUIREMENTS
System Requirements
Detection The system shall detect vehicle(s) ahead
of ACC equipped vehicle
Outline • Introduction • Design Norms • Requirements • Design • Testing
System Requirements
Operation The user shall be able to independently
engage the ACC system The vehicle shall operate at the user
defined speed when no impeding vehicles ahead are detected
The system will slow down the vehicle if an impeding vehicle is detected
Outline • Introduction • Design Norms • Requirements • Design • Testing
SYSTEM DESIGN
System Design
Outline • Introduction • Design Norms • Requirements • Design • Testing
TESTING
Testing
Reverse engineer speed signals via NeoVi and J1850 Vehicle Bus Testing methods: stop watch, Vehicle Spy,
test plans Tested for: Cruise On/Off, Speed Signals,
Cancel/Resume, Coast/Accel Data Recorded in Excel
Used a Filter to narrow experimental search Found HEX value 0x10 to be speed Confirmed afterward by documentation from
JCI
Outline • Introduction • Design Norms • Requirements • Design • Testing
QUESTIONS?
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