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?