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V1.0 | 2018-10-23
Webinar 2018
Wiring Harness and Power Distribution Design with PREEvision
1. PREEvision Overview
2. Architecture Design
3. Series Development
4. Benefits of PREEvision for Wiring Design
Agenda
2
From a Fragmented Tool Landscape to an Integrated Solution
PREEvision Overview
Tool Landscape Situation:Multiple Tools and Interfaces
Integrated Tool Approach:PREEvision E/E Engineering Environment
3
Basic idea and benefits to our customers
PREEvision Overview
PREEvision = Model Based E/E Systems Engineering
Integrated business logic and one comprehensive data model for the entire E/E development process from Requirements, through System, SW/HW/COM/HW/WH-Design to test.
Architecture Design and Management:
Research, Advanced Engineering, Architecture Groups
E/E Design Backbone and Collaboration Environment
Requirements and Test Engineering
System, Function, Software, Component, Communication, Hardware and Wiring Harness Development; Functional Safety Design
Variant and Product Line Management
PREEvision:
One Data Model. One GUI.
Many Users. Multiple Sites.
One Data Source. One Process.
Full traceability. Full Transparency.
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Supported Use Cases
PREEvision Overview
E/E BackboneCollaboration Platform
File Management
Change and Release Management
Design of SafetyRelevant Systems
Product LineEngineering
ArchitectureDesign
Requirements Engineering and Requirements Management
Wiring HarnessDesign
AUTOSARSystem, Service and Software
Design
Communication Design(AUTOSAR and Legacy Formats)
Hardware ComponentDevelopment
Function-Driven Design
System Design
Test Engineering andTest Management
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Logic
al/
SW
Arc
hitectu
re
Model Based Approach
PREEvision Overview
Domain specific language and data model
Single source model across all Automotive E/E development Use Cases: The model is the Single Point of Truth Mappings ensure full traceability The model can be analyzed by metrics Specifications and Reports are generated
out of the model
All data objects have a semantic meaning Base for various model checks e.g. for
Correctness, Completeness, Consistency
Automated algorithms for synthesis, scheduling, signal routing, etc.
Import and export with industry standard exchange formats (AUTOSAR, DBC, LDF, FIBEX, RIF, ReqIF, KBL, CSV)
PowerMirrorCtrl
Type: PowerMirrorCtrl
SwitchMatrix
Type: SwitchMatrix
PowerMirrorPass
Type: PowerMirr...
PowerMirrorDriver
Type: PowerMirr...
PowerManagement
Type: PowerMan...
x+:pm_pass_x+
y+:pm_pass_y+
y-:pm_pass_y-
x-:pm_pass_x-
y+:pm_driv_y+
x+:pm_driv_x+
y-:pm_driv_y-
x-:pm_driv_x-
y:PM_y
x:PM_x
sel:PM_selection
def12:KeyIn
sel:PM_selection
x:PM_x
y:PM_y x+:pm_pass_x+
y+:pm_pass_y+
y-:pm_pass_y-
x-:pm_pass_x-
y+:pm_driv_y+
x+:pm_driv_x+
y-:pm_driv_y-
x-:pm_driv_x-
KeyIn:KeyIn Assembly Net
Assembly Net
Requirem
ents
Netw
ork
/HW
Arc
hitectu
reW
irin
g/
Geom
etr
y
Body Ctrl
Driver Door CtrlPass Door Ctrl
Gateway
SwtichMatrix
PassengerMirror DriverMirror
BatMng
-
-
-
-
-
-
-
-
-
DoorLIN:LIN
Ground
PowerSupply
- cv2:4w -KA_Pass Door Ctrl _0
-
-
CANPT:CANC
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1. PREEvision Overview
2. Architecture Design
3. Series Development
4. Benefits of PREEvision for Wiring Design
Agenda
7
Wiring Harness Workflow
Architecture Design
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Model logical connections betweenhardware components
Conventional connections
Bus systems (e.g. CAN, LIN, FlexRay, etc.)
Power supply (In and Out)
Ground connections
Can be focused on different aspects of the network
Complete network
Parts of the network
Component based (see example)
Network Design
Architecture Design
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Refine the connections to modelelectric circuits
Electric potentials
Provides Requirements to detailedwiring harness design
Automatic synthesis of the schematicconnections out of thelogical connections
Current calculation available
Calculation of the currentsfor wires
Selection of neededwire types and cable types
Electric Circuit Design
Architecture Design
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Modeling of internal electric circuits
Use of Hardware Devices
Hardware Devices can be customer defined, and combined into ‘modules’ for reuse
Definition of internal structure of fuse relay boxes
Electric Circuit Design
Architecture Design
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3D data may be imported from an external CAD system
Details may be added for:
Properties of the Compartments> Measurements
> Coordinates
> Bend radius (for Topology Segments)
Extended properties> Temperatures
> Damp / wet location
> Area with vibration
Modelled Components are then mapped with the resulting geometry model
Geometry Design and Component Mapping
Architecture Design
KBL CAD
2D topology
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Wiring Design
Architecture Design
Cable Header
Splice
Pin
Single WireInline Connector
Core
Wiring Connector
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Locate connectors within the imported geometry
The extended properties of the geometry layer allow PREEvision to propose suitable connectors, e.g. for wet or hot locations
Connector/Geometry Mapping
Architecture Design
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The wiring Harness is an expensive and heavy part of an E/E Architecture
Great potential for optimization
PREEvision automatically routes wires throughthe underlying Geometrical Topology
Find the ‘cheapest’ way
Variant sensitive routing
Respect bundle diameters andother constraints
Create Inline Connectors if necessary
Wiring Harness Routing
Architecture Design
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Specifying the terminals that are to be used in building the harness
A number of different contact types may be modelled when defining components:
Pin types are added to the contacts to finalise the design
It is possible to model ‘families’ to facilitate terminal selection:
Terminal Determination
Architecture Design
Standard Contact Double ContactVariant Bridge ContactDouble Crimp
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Final Wiring Harness Design
Architecture Design
Wiring harness drawing with connectors and pinning – even with incomplete connector data
Issue drawings, e.g. as PDF
Additional data, e.g. as report or as Excel
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Export of KBL
Architecture Design
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Model-based Wiring Harness Design 1/3
Architecture Design
Model-Based Development
Industrial standard data model alignedwith automotive industry needs
Semantic meaning behind “drawing elements”
Linking of all data
Navigation through diagrams
Consistent diagrams
Library concepts available
Optimization possible (weight, cable length, positioning of splices)
Example: Online Consistency Checks
Here: missing wire type
Example: Interactive Highlights
Here: Routing of the wire
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Model-based Wiring Harness Design 2/3
Architecture Design
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Model-based Wiring Harness Design 3/3
Architecture Design
Design
Evaluate
Optimize
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1. PREEvision Overview
2. Architecture Design
3. Series Development
4. Benefits of PREEvision for Wiring Design
Agenda
22
Challenges for Series Development
Series Development
ComponentsPinningArchitecture (Power, Ground)
Network Architecture
CAD Installation SpaceProduct configuration
>1000 Changes/annum
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Introducing new parts and sub-systems
Series Development
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Separation of Wiring Harness and Geometry
Multiple use of one Wiring Harness in similar bodies
Variant Management of Wiring Harness
Automated variant completion available (rule-based variant propagation)
Variant Management
Series Development
Sedan Station Wagon Convertible
Mappings Mappings
Mappings
25
…
…
Prem. Snd.
Base Entertain.
Build “modules” (= set in PREEvision) with wiring harness parts
Combine modules to define concrete wiring harnesses
Variant Management within the Wiring Harness
Series Development
…
Seat Heating
…
Rain Sensor
Wire 123
Wire 145Connector ASplice X…
WH Indoor BWH Indoor A
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Composite/derivative method
Equipment of orderable cars is predefined by OEM
Customer can choose between these predefined variants only
Mainly in the US and Japan (EU for sub-harnesses only)
Also common for architecture studies
Variant Management for Wiring Harness
Series Development
150% wiring harness
Predefined by OEM
Base Mid Premium
2627
Customer specific harness (KSK)
Function driven modularization of the 150% harness
Customer can configure the equipment of his car
Configuration defines content of the respective wiring harness
Mainly in EU
Variant Management for Wiring Harness
Series Development
Climate System
150% wiring harness
Airbag System Audio System
Configured by customer
Variant Management in PREEvision supports both composite/derivative and function-driven modularization. Also variant management mixing both methods is possible.
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With PREEvision, collaborative working is within reach from day 1
The PREEvision Collaboration Platform allows:
Multi-user access from distributed locations, to a single source of truth
Artefact-level ‘smart-locking’ once changes begin to be made to model content> This means that component libraries and shared components may be updated while other users or teams
continue work throughout the model
Lifecycles, and roles and rights to facilitate product and release management
Change history, and ‘roll-back’ of content> Deleted artefacts may even be ‘brought back to life’ in the model!
Large teams working in parallel, across geographic locations
Series Development
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PREEvision’s automated consistency checks may be tailored and applied to any step of the process:
At the network level, e.g. for missing connections or for missing connection attributes
At the electric circuit level, e.g. for an incompatible fuse rating compared with expected loadings
At the wire-harness level, e.g. for a connector choice not appropriate for a location (unsealed connector used under-bonnet)
At any level, are all artefacts that are necessary for a ‘complete harness’ included once a variant is applied to the model?
With high rates of change come high risks of inconsistencies
Series Development
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1. PREEvision Overview
2. Architecture Design
3. Series Development
4. Benefits of PREEvision for Wiring Design
Agenda
31
PREEvision seamlessly supports the wiring and power distribution design process from initial, logical building-blocks, through electric circuits, to detailed harness drawings
The Collaboration Platform facilitates parallel development by large or dispersed teams of engineers for series production design resulting in a step-change in efficiency
Lifecycles and versioning may be applied to artefacts to assist in controlling product and release management and communication of part status (e.g. initial release, end-of-life,…)
Configurable consistency checks ensure the quality of work at all steps and stages, even when rates of change are high
Industry-standard data exchange formats, such as KBL, ensure out-of-the-box interoperability and facilitate data sharing between development partners
Customer-specific imports and exports are possible for exchange using other formats
PREEvision's integrated data model allows the output of upstream processes, such as communication and system architecture design, to be reused as the basis of harness architecture design and detailing
The layered data model allows rapid application of electrical logic to different system geometries
The advanced variant management allows KSK and 'trim-level' approaches to be taken to harness construction, or a hybrid approach that employs both
The built-in variant management also allows rapid, automated comparison of alternatives
Cross domain analysis and optimisation is also possible – e.g. “what if we integrate these ECUs…?”
In conclusion
Benefits of PREEvision for Wiring Design
32
© 2018. Vector Informatik GmbH. All rights reserved. Any distribution or copying is subject to prior written approval by Vector. V1.0 | 2018-10-23
Author:Ulrich Berthold, Iain Cunningham, Georg BunkertVector Germany
For more information about Vectorand our products please visit
www.vector.com
