System Design

isa- UKintelligent speed adaptation

isa- UKintelligent speed adaptation

ISA UK – MIRA ITS

Assess system needs for ISA trial vehicles Define a system design and prove

functionality Prototype (1 Vehicle) Production Run (21 vehicles)

Subsequent GV and M/C demonstrators Parallel technology watch and legal review Industry Liaison

ISA - User needs

A process to capture the users’ expectation of the system from the viewpoint of the users

User needs are unambiguous and testable» Statements of the form “The system shall …”

Mapped to the needs of particular stakeholders

A Living document updated during project A way of directing thought

ISA Design & Safety Analysis Goal:

to produce “ISA function” from existing technology and retrofit it to vehicles

Safe: vehicles must not cause harm or injury to

vehicle occupants or to other road users Reliable:

vehicles must be capable of fulfilling the project objectives

And technically feasible!

ISA System The additional ISA system

A three part function Control: Monitors vehicle and driver demand

and “limits” speed when required Data: Collects Data on system (and driver)

behaviour for later download/analysis Supported by a digital map and GPS that

tells the Control where the vehicle is and what the speed limit is

C-DAS = Control & Data Acquisition

Command Module

Wheel Speed ThrottleBrake

Control Module

Buttons Emergency Stop

Headway

Data Logging

50 30Interface

MIRA ISA C- DAS 2002

Map Module

Position: - Long/LatLocation: - Road (limit)

- Direction - Distance to limit/junction

SteeringWheel Pos

WheelRotation

Inertial Guidance

Map ApplicationSoftware + Box

GPS NavReceiver

Aerial

Dire

ctio

n

33, 44 mph etc

Brake Light

Pedal Kickdown Display

Transmission

Server

Engine Speed

ISA Host Car Surprisingly agile performance Standard electronic throttle Good quality ABS Position within I/P for display Estate version gives range of packaging

possibilities Smooth driving at low speed in 5th gear Brand new design (based on the Polo 2002

floor pan)

User InterfaceISA Resume ISA Opt-out

Emergency Override

Visual Display - Location

RPM x100

MPH

EPC

! !

MPG

ISA Display States Number of Text &

Symbol Displays Ability to count-down to

speed restriction. Easily accommodates

British and European applications.

Ability to build display graphic ‘on the fly’.

ISA Installation Standard

Vehicle Stripped

Down Modify Install Wiring Install

Control Boxes

Power Supplies

Data Logging

Speed Limit

Velocity

Location

Time

Engine Spd

Acc ped pos

Butterfly pos

Brake

HMI buttons

E Stop

Driver ID

Headway Ft

Headway Rr

Signal Conditioner

Data Logger Telemetry

DataProcessing

DATA LOGGING PROCESS

DataProcessing

DataProcessing

Error Signal

Telemetry/Receiver

File Structureon Server

Database Structure Manipulation

Graphical Outputsand Reports

Validation of Hypotheses

GSM

Other ISA Vehicles

Goods Vehicle 2003/4

Demo & Trial Motorcycle 2004/5 Demo Each having specific

issues Industry Liaison