Industrial Communication Systems

24-1

24.1 Introduction

e evolution of civilian aircra avionics systems is mainly due to increasing complexity, which is

illustrated

by

a

larger

number

of

integrated

functions,

a

growing

volume

of

exchanged

data,

and

a

mul-

tiplication

of

connections

between

functions.

Consequently,

the

growth

in

the

number

of

multipoint

communication

links

could

not

be

taken

into

account

by

classic

avionics

mono-emitter

data

buses

(such

as

ARINC

429

[ARI01]).

e

rst

solution

proposed

for

the

Boeing

777

led

to

the

design

of

a

new

multi-

plexed

data

bus

based

on

CSMA-CA

medium

access

control

(ARINC

629

standard

[ARI99]).

e

solu-

tion

adopted

by

Airbus

for

t