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Method and System to Automate the Verification of the Pre-Crash Occupant Setup and Status

IP.com Disclosure Number: IPCOM000249365D
Publication Date: 2017-Feb-21
Document File: 3 page(s) / 330K

Publishing Venue

The IP.com Prior Art Database

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Method and System to Automate the Verification of the Pre-Crash Occupant Setup and Status

Background:

Throughout an individual program development cycle, a series of crash tests are conducted to verify the occupant and restraint system performance for certification and product validation purposes. Each of the certification tests is conducted according to the respective procedure which defines occupant size, seating position, belt conditions, steering wheel, feet to pedal distance, etc. Different measurements and verifications are performed before each crash test is launched. Multiple members from the product development, testing, and supplier teams are involved and needed for the “OK-to- test” sign-off process. The “Ok-to-test” sign-off is completed after the ATD occupant is positioned and just before the vehicle is launched. This is a time consuming process for the involved teams and facilities.

OBD-II Port ATD Occupant during prep Restraint Control Module mounted on

center tunnel Figure 1: Test Setup

Objectives:

The objective of this work is to develop a programmable tool that interfaces with the CAN bus to

determine if the occupant status parameters and restraint control module status of the test vehicle

match the ones specified in the test request.

Concept and Methodology:

The current crash testing sign off process as detailed in Figure 2 requires manual interaction between multidisciplinary teams and databases. Additionally, to maintain test facility through put, all the team members are required to be present during test prep. The existing process has mitigated prototype loss, but has diminished the return of invested engineering man hours.

Vehicle CAN Bus

Barrier CAN Recorder

Barrier Data Base

CAN TOOL

Test Request (Occupant Status Parameters)

Occupant Status Checklist

Does CAN Bus Match the Checklist?

Occupant Status

Parameters as Reported by

CAN Bus

OK to Test YES NO

Hold Test, Resolve Mismatch

Figure 2: Current Process

The proposed solution is to increase automation by designing a programmable tool that interfaces with

the vehicles CAN bus to check if the occupant status parameters match the ones specified in the test

request. (Figure 3) The system also displays which parameter(s) (size, seat position, and seat belt status)

does not match the requested one. Additionally, it can utilize cameras...