EQUIP’AUTO-PARIS 13th-18th October 1999
THE NEW PEUGEOT 607 LAUNCHES
PSA ELECTRONIC PLATFORM
Patrick HERBAULT - Jean Michel CLIQUE – Jean Marc DHAINAUT
François KAAG - Jean Luc LECOCQ - André COUSTRE
99066PSA1
99066PSA2
ELECTRONIC PLATFORM

PSA vehicle development is now based on four vehicle
platforms :
 PF1
platform 1 for small vehicles
 PF2
platform 2 for medium sized vehicles
 PF3
platform 3 for upper class vehicles
 Co-operation
platform for vehicle in collaboration with
other car manufacturers

The benefits of platform strategy are well known and are
reinforced concerning electronics

The ultimate objective is to reach a single electronic platform
99066PSA3
THE TARGETED ELECTRICAL/ELECTRONIC
ARCHITECTURE

It is based on :
 An
Intelligent Switching Unit ,so called ISU
A
simultaneous optimisation of electrical architecture &
electronic architecture.

That has been obtained by :
 Optimised
partitioning of harnesses minimising number
of interconnections
 Merging
an increasing number of body electronics
functions in the ISU
 Intensive
use of the multiplexing technology
99066PSA4
MULTIPLEXING TECHNOLOGIES

Historically different classes of multiplexing have
been defined :
 class
A for low speed, master/slave low cost multiplexing
 class
B for medium speed multimasters multiplexing
 class
C for high speed multimasters multiplexing
 class
D for optical data link
99066PSA5
VAN-CONCEPT
CONTROLLER
sensors
display
CONTROLLER
CONTROLLER
CONTROLLER
CONTROLLER
actuators
SLAVE peripherals
CONTROLLER AREA NETWORK
CONTROLLER
CONTROLLER
sensors
CONTROLLER
display
CONTROLLER
actuators
Vehicle Area Network
99066PSA6
THE MAIN CHARACTERISTICS OF VAN
STANDARD ISO PROTOCOL 11519-3

Multimasters / multislaves architecture

Bitwise arbitration access method

Self clocking for slave peripherals

Fault tolerant bus driver able to cope with open or short
circuit on one wire

28 data bytes (up to 220 possible) protected by a 15 bits CRC

Broadcast or confirmed point to point communication

Deterministic behaviour through :

number of retries under control

control / command mechanism

In Frame Response mechanism
99066PSA7
VAN In Frame Response Mechanism
MASTER
"Request"
(Rank 0)
Start of
frame
Adress
Command
1
99066PSA8
VAN In Frame Response Mechanism
MASTER
"Request"
(Rank 0)
Start of
frame
Adress
Command
PERIPHERAL
"Answer"
(Rank 16)
ACK
0
Data(s)
Frame Cherk
Sequence
EOD
Remote Transmission Request bit (RTR)
RESULT
Start of
frame
Adress
Command
Data(s)
Frame Cherk
Sequence
EOD
ACK
99066PSA9
ELECTRIC / ELECTRONIC ARCHITECTURE
BASED ON ISU
ABS
CAN
(option)
Car
Radio
(option)
Climate
Control
(option)
CD
Changer
(option)
Multif unctions
Display
(option)
Auto Gearbox
CAN
(option)
Airbag
Module
(option)
ISU
Steering
column
CAN interface
starting from
PSA2000
NAV
Sy stem
(option)
Point to Point
connection
until
PSA2000
Seat
Module
(memo
option)
Door
Module
(option)
Lighting
Module
(Auto
switch
option)
Point to point
Interface
ISO 9141
Diagnosys Bus
ISU + VAN Nodes
Diagnosys Socket
EOBD J1962
99066PSA10
IMPLEMENTATION OF
3 MULTIPLEXED NETWORKS

1 CAN intersystem network short messages oriented at high speed





1 VAN comfort network long message oriented at medium speed





for display, dashboard, radio, climate, navigation functions ...
multimasters network
speed = 125 kbits/s
message length allows 28 data bytes maximum (possible extension to 220 bytes)
fully matching with display equipment’s requirements.
1 VAN body network safety and/or cost effective oriented






for mechanical and engine functions
multimasters network
speed = 250 kbits/s
message length allows 8 data bytes maximum (mathematical limitation)
for airbags, front lights, doors, window lift, seats ...
master/slaves network less sophisticated but safer
typical speed 62.5 kbits /s which can be tuned for each slave node
message length = 28 data bytes max.
easy to add new nodes and sub-networks
In addition the diagnosis on the VAN nodes is transmitted on the VAN bus
according to ISO 9141 procedures (compatible with the 28 data bytes length)
to the ISU used as a gateway to transmit the DIAG on VAN to a 9141 connection
99066PSA11
ELECTRIC / ELECTRONIC ARCHITECTURE
BASED ON ISU
S u s p e n s io n
C o n tro l
CAN
(o p tio n )
C lim a te C o n tro l
(o p tio n )
C D Ch a n g e r
(o p tio n )
N a vig a tio n
(o p tio n )
R a d io
ABS
CAN
(o pt io n)
Multi-functions
Display
A u to m a tic
G e a rB o x
CAN
(o p tio n )
C A N In te rfa c e
s ta rtin g fro m
P SA2000
P o in t to p o in t
c o n n e c tio n
u n til
P SA 2000
Door
M o d u le
(o p tio n )
IS U
S eat
M o d u le
(o p tio n )
H e a d lig h t
M o d u le
(o p tio n fo r
a u to m a t ic
s w itc h in g )
S te e rin g C o lu m n
M o d u le
A irb a g
M o d u le
(o p tio n )
S witch in g
U n it
(R e la ys,fu se s)
R a in
Sensor
(V A N
by SOFT)
D iagn o sys IS O 9141 L in k
B SI + V A N M o d u les
Dia g n o sys S o cke t
E O B D J1 9 6 2
99066PSA12
ISU SOFTWARE ARCHITECTURE

Another cost optimisation consists of incorporating in the
ISU an increasing number of body electronics functions

To manage the merging of different body electronics
functions we had to manage also the merging of
competence's of the different body electronics suppliers

In order to succeed this merging, the hardware and the
software development of the ISU have been separated

The separation of the hardware and software development is
very usual in the computer science field, but had never been
practised by PSA previously
99066PSA13
PC OPEN SOFTWARE ARCHITECTURE
PC
WINDOWS
SCANNER
Scanner
Device
Driver
Printer
Device
Driver
PRINTER
BIOS
(Basic Input/Output Software)
Mother Board (IBM, COMPAQ…)
99066PSA14
ISU OPEN SOFTWARE ARCHITECTURE
ADAPTED FROM PC WORLD
ISU
PSA
Operating
System
RAIN SENSOR
Visibility
Software
Package
Information
Software
Package
DASHBOARD
BIOS
(Basic Input/Output Software)
ISU hardware (SAGEM, VALEO, SIEMENS)
Non
multiplexed
connections
Intersystem
CAN
Body
VAN
Comfort
VAN
99066PSA15
THE NEW PEUGEOT 607 will launch the new
PSA electronic platform

Up to 24 electronic equipment's are interconnected
through 5 electronic busses :


CAN intersystem network
VAN comfort network

VAN body network 1 dedicated to highly safety critical functions
(airbag, headlights switching,…)

VAN body network 2 for the other functions
(door control, seat control, fuel additivation requested by particle
filter for the multi-valve Hdi diesel engine,…)
an optical data link D2B on optical fibre for large data transfer
between the navigation system and the multifunction display

99066PSA16
607, ISU SOFTWARE STRUCTURE
Package function
equipment
Suppliers
BIOS
ISU
SAGEM
1
theft protection
transponder
DELPHI/TEXTON
2
remote control
HF
VALEO
3
information
dashboard
VDO
4
windscreen vision
rain sensor
VALEO/ITT
5
lighting
twilight sensor
VALEO
6
seat memorisation
memo box
BITRON
7
door control
central lock
MAGNETI-MARELLI
99066PSA17
Thanks to multiplexing, the 607 gets
benefit of the following functions :

Ignition key with multi-function remote control, called "plip”
setting automatically seat & mirrors multiple adjustments

Detection of tyre under-inflation

Automatic hazard lights operation on fierce braking

Automatic switching on of the lights according twilight sensor

Display intensity varied to suit the ambient light conditions

Radio, radiophone volume control in line with speed

Parking assistance with special mirror positioning while moving
in reverse for a better view of the kerb

Automatic wiper speed control including automatically switching
of the sidelights

Engine intelligent service indicator taking into account real use
of the vehicle
99066PSA18
PSA ELECTRONIC PLATFORM DEPLOYMENT

This electrical/electronic platform based on a set of around
20 electronic equipments including a biVAN-CAN ISU
associated to an open multisuppliers software architecture is
deployed on the four PSA vehicles platforms

Immediate consequence on wiring :
previous
vehicle
previous number future number difference
of wires
of wires
Citroën Xantia
670
429
- 36%
Peugeot 306
635
373
- 41%
99066PSA19
NUMBER OF MILLIONS OF VAN
NODES PER YEARS
18 000 000
Volume
16 000 000
14 000 000
12 000 000
10 000 000
8 000 000
6 000 000
4 000 000
2 000 000
0
1998
1999
2000
2001
Year
99066PSA20
40 MILLIONS VAN COMPONENTS PER YEAR
WILL ALLOW COST EFFECTIVE CHIPS

VAN bus transceiver with watchdog, wake up and fault
tolerance for less than 1 Euro from Alcatel or Elmos

VAN bus controller for less than 1 Euro from Atmel-MHS or
NEC

ASIC VAN-IO16 (16 inputs/outputs) for also less than 1
Euro from Atmel

8 bit microprocessors with VAN cell starting at 1.5 Euro
from NEC

32 bit microprocessor VANSTORM (2 VAN cells & 1 CAN
cell) from NEC starting at 5.5 Euro
99066PSA21
VAN NODE STRUCTURE
Technologies
ISO levels
APPLICATION
LLC layer
CMOS
VAN protocol handler
Bus fault diagnosis
TX
BiCMOS
Supply
R1
R0
Vref
MAC layer
R2
physical layer
FILTER
VAN bus
DATA
DATAb
+12V
Gnd
99066PSA22
Nominal mode is differential mode
Technologies
ISO levels
APPLICATION
LLC layer
CMOS
VAN protocol handler
Bus fault diagnosis
TX
BiCMOS
Supply
R1
R0
Vref
MAC layer
R2
physical layer
FILTER
VAN bus
DATA
DATAb
+12V
Gnd
99066PSA23
Single wire mode in case of failure of one wire
Technologies
ISO levels
APPLICATION
LLC layer
CMOS
VAN protocol handler
Bus fault diagnosis
TX
BiCMOS
Supply
R1
R0
Vref
MAC layer
R2
physical layer
FILTER
VAN bus
DATA
DATAb
+12V
Gnd
99066PSA24
Single wire mode in case of failure of one wire
Technologies
ISO levels
APPLICATION
LLC layer
CMOS
VAN protocol handler
Bus fault diagnosis
TX
BiCMOS
Supply
R1
R0
Vref
MAC layer
R2
physical layer
FILTER
VAN bus
DATA
DATAb
+12V
Gnd
99066PSA25
VAN VHDL MODELS
available on web site http://www.van-mux.org
VAN Core
Industrialised by Thomson DETEXIS
• full RTL model
• no buffering (MAC level)
• 3.5k gates maxi
VAN UART
Already used as a µcontroller cell
VAN slave
Existing ASICs
Full VAN
In development
• based on VAN core
• 1 byte buffering
• 3.5 k gates
• based on VAN core
• 5k gates
•
•
•
•
based on VAN Core
128 bytes RAM (adaptable to Silicon founders)
14 identifier registers
15k gates
99066PSA26
FUTURE EXTENSION OF MULTIPLEXING

The further developments concern :
 extension
of multiplexing through ASIC developments :
VAN IO8 down to VAN IO2 and VAN-MIX
 evolutions
of physical layers :
pulse mode and spread spectrum technique
 introduction
of multimedia bus
 introduction
of firing bus for airbags
 safety
enhancement through VAN&CAN redundancy and TTP
proposal
 evolution
from PSA local Operating System towards OSEK/VDX
standard
99066PSA27
FIRING BUS FOR AIRBAGS

In this safety critical application, the VAN-ISO
11519-3 gives already a standardised solution
including :


master/slave operation
fault tolerant bus transceiver

available VHDL description
(on web site : http://www.van-mux.org)

self-clocking for slave node allowing absence of local crystal or
resonator and also adaptive speed :


16.5 kbits/s for permanent diagnosis with low emission,
250 kbits/s for firing
99066PSA28
PROPOSAL FOR SAFETY CRITICAL
APPLICATION
As Example : Airbag system using VAN for firing BUS
Slave peripherals
Airbag 1
Airbag 2
Airbag
system
VAN
VAN
VAN
VAN
CAN
CAN
ISU
CAN
Airbag 3
Airbag 4
99066PSA29
OSEK / VDX

The open multisuppliers software architecture of PSA
is based on a local Operating System which is a first
step to prepare OSEK / VDX implementation

The next steps provided by OSEK / VDX will be :

first a standardised software kernel

second the evolution towards distributed functions
99066PSA30
CONCLUSIONS
The PSA electrical/electronic platform
based on a set of 20 electronic equipment’s
including a biVAN-CAN ISU associated to
an open multisuppliers software architecture,
- is launched on the new Peugeot 607
- will be deployed on the four PSA platforms
99066PSA31
99066PSA32
99066PSA33