Road vehicles — Crosstalk determination for multi-axis load cell

This document establishes an adequate procedure to determine crosstalk values in order to improve comparability of measurement results between testing laboratories and to enable a load cell performance rating in accordance to the crosstalk specification for transducers in vehicle crash testing given in ISO 6487, SAE-J211-1 and SAE J2570.

Véhicules routiers — Détermination de l’effet transverse sur capteur de force multi axial

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Status
Published
Publication Date
15-Feb-2021
Current Stage
6060 - International Standard published
Start Date
16-Feb-2021
Completion Date
16-Feb-2021
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INTERNATIONAL ISO
STANDARD 21612
First edition
2021-02
Road vehicles — Crosstalk
determination for multi-axis load cell
Véhicules routiers — Détermination de l’effet transverse sur capteur
de force multi axial
Reference number
ISO 21612:2021(E)
ISO 2021
---------------------- Page: 1 ----------------------
ISO 21612:2021(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2021

All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may

be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting

on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address

below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2021 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 21612:2021(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 1

4 Field of application ............................................................................................................................................................................................ 1

5 Crosstalk determination .............................................................................................................................................................................. 1

5.1 Test setup requirements and general preconditions ............................................................................................. 1

5.2 Additional test information .......................................................................................................................................................... 2

5.3 Crosstalk determination ................................................................................................................................................................. 2

5.4 Data record ................................................................................................................................................................................................. 3

Annex A (informative) Workflow diagram crosstalk determination .................................................................................. 5

Bibliography ................................................................................................................................................................................................................................ 6

© ISO 2021 – All rights reserved iii
---------------------- Page: 3 ----------------------
ISO 21612:2021(E)
Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards

bodies (ISO member bodies). The work of preparing International Standards is normally carried out

through ISO technical committees. Each member body interested in a subject for which a technical

committee has been established has the right to be represented on that committee. International

organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.

ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of

electrotechnical standardization.

The procedures used to develop this document and those intended for its further maintenance are

described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the

different types of ISO documents should be noted. This document was drafted in accordance with the

editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of

any patent rights identified during the development of the document will be in the Introduction and/or

on the ISO list of patent declarations received (see www .iso .org/ patents).

Any trade name used in this document is information given for the convenience of users and does not

constitute an endorsement.

For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and

expressions related to conformity assessment, as well as information about ISO's adherence to the

World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see www .iso .org/

iso/ foreword .html.

This document was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 36,

Safety and impact testing.

Any feedback or questions on this document should be directed to the user’s national standards body. A

complete listing of these bodies can be found at www .iso .org/ members .html.
iv © ISO 2021 – All rights reserved
---------------------- Page: 4 ----------------------
INTERNATIONAL STANDARD ISO 21612:2021(E)
Road vehicles — Crosstalk determination for multi-axis
load cell
1 Scope

This document establishes an adequate procedure to determine crosstalk values in order to improve

comparability of measurement results between testing laboratories and to enable a load cell

performance rating in accordance to the crosstalk specification for transducers in vehicle crash testing

given in ISO 6487, SAE-J211-1 and SAE J2570.
2 Normative references
There are no normative references in this document.
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at http:// www .electropedia .org/
3.1
crosstalk

undesired measured output of a transverse channel under defined load on the calibrated axis

Note 1 to entry: Crosstalk is alternatively known as transverse or cross sensitivity.

4 Field of application
The described measurement procedure refers to any multi-axis load cell.

The crosstalk value helps to check the transducer’s performance and to identify sources of error during

the calibration process. Therefore, it is recommended to determine the load cell’s crosstalk value

during the calibration. It could be an indicator for a wrong test setup (loading point, fixtures, channel

allocation, overloading, etc.).
5 Crosstalk determination
5.1 Test setup requirements and general preconditions

Prior to determination of crosstalk values, the conditions as follows need to be maintained.

— The load cell calibration test setup follows the common standards for vehicle crash transducers for

forces and moments.
— The crosstalk value is only considered for the traceable calibration range,
...

INTERNATIONAL ISO
STANDARD 21612
First edition
Road vehicles — Crosstalk
determination for multi-axis load cell
Véhicules routiers — Détermination de l’effet transverse sur capteur
de force multi axial
PROOF/ÉPREUVE
Reference number
ISO 21612:2020(E)
ISO 2020
---------------------- Page: 1 ----------------------
ISO 21612:2020(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2020

All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may

be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting

on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address

below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii PROOF/ÉPREUVE © ISO 2020 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 21612:2020(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 1

4 Field of application ............................................................................................................................................................................................ 1

5 Crosstalk determination .............................................................................................................................................................................. 1

5.1 Test setup requirements and general preconditions ............................................................................................. 1

5.2 Additional test information .......................................................................................................................................................... 2

5.3 Crosstalk determination ................................................................................................................................................................. 2

5.4 Data record ................................................................................................................................................................................................. 3

Annex A (informative) Workflow diagram crosstalk determination .................................................................................. 5

Bibliography ................................................................................................................................................................................................................................ 6

© ISO 2020 – All rights reserved PROOF/ÉPREUVE iii
---------------------- Page: 3 ----------------------
ISO 21612:2020(E)
Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards

bodies (ISO member bodies). The work of preparing International Standards is normally carried out

through ISO technical committees. Each member body interested in a subject for which a technical

committee has been established has the right to be represented on that committee. International

organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.

ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of

electrotechnical standardization.

The procedures used to develop this document and those intended for its further maintenance are

described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the

different types of ISO documents should be noted. This document was drafted in accordance with the

editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of

any patent rights identified during the development of the document will be in the Introduction and/or

on the ISO list of patent declarations received (see www .iso .org/ patents).

Any trade name used in this document is information given for the convenience of users and does not

constitute an endorsement.

For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and

expressions related to conformity assessment, as well as information about ISO's adherence to the

World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see www .iso .org/

iso/ foreword .html.

This document was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 36,

Safety and impact testing.

Any feedback or questions on this document should be directed to the user’s national standards body. A

complete listing of these bodies can be found at www .iso .org/ members .html.
iv PROOF/ÉPREUVE © ISO 2020 – All rights reserved
---------------------- Page: 4 ----------------------
INTERNATIONAL STANDARD ISO 21612:2020(E)
Road vehicles — Crosstalk determination for multi-axis
load cell
1 Scope

This document establishes an adequate procedure to determine crosstalk values in order to improve

comparability of measurement results between testing laboratories and to enable a load cell

performance rating in accordance to the crosstalk specification for transducers in vehicle crash testing

given in ISO 6487, SAE-J211-1 and SAE J2570.
2 Normative references
There are no normative references in this document.
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at http:// www .electropedia .org/
3.1
crosstalk

undesired measured output of a transverse channel under defined load on the calibrated axis

Note 1 to entry: Crosstalk is alternatively known as transverse or cross sensitivity.

4 Field of application
The described measurement procedure refers to any multi-axis load cell.

The crosstalk value helps to check the transducer’s performance and to identify sources of error during

the calibration process. Therefore, it is recommended to determine the load cell’s crosstalk value

during the calibration. It could be an indicator for a wrong test setup (loading point, fixtures, channel

allocation, overloading, etc.).
5 Crosstalk determination
5.1 Test setup requirements and general preconditions

Prior to determination of crosstalk values, the conditions as follows need to be maintained.

— The load cell calibration test setup follows the common standards for vehicle crash transducers for

forces and moments.

— The crosstalk value is only considered for the traceable calibration range, which is defined in the

...

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