08
3
Why eBTD?
What is the eBTD?
Where will the eBTD go? eBTD SAE Government/Industry,
May 12, 2008
4
Why eBTD?
y
Where does it come from?
What is the eBTD?
Where will the eBTD go?
1970s
2008 eBTD SAE Government/Industry,
May 12, 2008
5
The Problem
Since the seventies strong reduction
of people killed in car accidents
The Revolution
y
Seat belt
y
Most important safety device
However: High number of serious
abdominal injuries in accidents
Reason: Insufficient support of human
skeleton structure in a crash eBTD SAE Government/Industry,
May 12, 2008
6
The Solution
Canadian Road and Motor Vehicle Safety
Branch
Transport Canada
Belt Fit Test Device (BTD) Assessment of static deployed belts
Hardware dummy
y
SAE J826 H-Point machine frame
y
Torso and lap shell of 50% Canadian
y
Scales on shells (bony structure)
Regulation
y
Belt fit criteria for clavicle, sternum and
lap scales (location and contact)
y
Adequate restrain of occupant in a crash
y
Amendment to CMVSS 208/210 eBTD SAE Government/Industry,
May 12, 2008
7
The eSolution
Goal
y
Development of digital certification
(electronical BTD - eBTD)
y
Compatibility to proposed BTD regulation
Benefits
y
Integration in digital development
process
y
Reduced test and travel expenses
y
Elimination of discrepancies between
different test conditions
Joint working group JWG-AIR
y
Transport Canada
y
Automotive industry
y
Control of developments (TWG) eBTD SAE Government/Industry,
May 12, 2008
8
The Cooperation & Project
Biokinetics and Associates Ltd.
1995 - 2006
Joint Working Group
Abdominal Injury Reduction
July 2006
Memorandum of
Understanding
Canadian Vehicle
Manufacturers' Association
Association of International
Automobile Manufacturers
of Canada
Legislator
Interest Groups
Industry
1995: Amendment to
CMVSS 208/210
1970s 1990s
BTD
eBTD
$$$ eBTD SAE Government/Industry,
May 12, 2008
9
Memorandum of Understanding (MOU)
Signature in July 2006
Purpose
y
Agreement between Transport Canada and
automobile manufactures
y
Guide lines for using eBTD/BTD to certificate
seat belt restraint systems
Key points
y
BTD / eBTD belt certification mandatory
y
Front seats of vehicles up to 3856 kg
y
Satisfying software simulation quality
y
Technical Framework
y
On annual basis report to Transport Canada
y
Case-by-case TCs requests for certification
details eBTD SAE Government/Industry,
May 12, 2008
10
Why eBTD?
What is the eBTD?
y
How is it used?
Where will the eBTD go?
1970s
2008
2006 eBTD SAE Government/Industry,
May 12, 2008
11
eBTD
eBTD (electronic Beltfit Test Device) Simulation of BTD evaluation in a
virtual environment
Commercial software module
y
Belt routing calculation on CAD
model of BTD
y
Check of BTD belt fit criteria
Platforms
y
Standalone
y
CATIA V5 eBTD SAE Government/Industry,
May 12, 2008
12
Technology
CAD Model
BTD
Triangulation of Shells
Particel
Belt Band
Spring Network
Spring Forces
Resulting Force
Joint/Origin
Rotation Axis
Rotation
Angles
Anchorage
Segments
Belt
Detachment
Edge
Border Particel Row eBTD SAE Government/Industry,
May 12, 2008
13
eBTD MOU Certification
Process
1.
Import of CAD data
2.
Defining the anchorages
3.
Positioning the eBTD
4.
Calculating the belt
assessment
5.
Generating the official
eBTD report eBTD SAE Government/Industry,
May 12, 2008
14
Why eBTD?
What is the eBTD?
Where will the eBTD go?
1970s
2008
2006
20xx eBTD SAE Government/Industry,
May 12, 2008
15
Technology and
Process Transfer
Belt Simulation on further test
devices
y
Hybrid3 family
y
Analysis of shoulder belt
placement
y
Check of routing against
sternum and lap pivot point
Simultaneous check of
anchorage standards
y
FMVSS210, ECE R14 eBTD SAE Government/Industry,
May 12, 2008
16
Technology and Process
Transfer
Belt Simulation on human models
(ergonomics)
y
Representation occupants of
different size, gender and
postures
y
Analysis of belt distance to neck
and shoulder (geometrical)
y
Analysis belt routing with respect
to human bony structure
Interface to external software
y
Static belt routing for crash test
simulation eBTD SAE Government/Industry,
May 12, 2008
17
Summary
Now
y
eBTD Digital seat belt certification
in Canada
y
Satisfying simulation results
y
MOU signed in 2006
Tomorrow
y
Universe solution regarding
different seat belt aspects
y
Constructive seat belt design
optimization regarding
8
Regulations
8
Safety
8
Ergonomics
The Electronic Belt-Fit Test
Device (eBTD) - Activity Update
Thank you for your
attention!