BS ISO 24631-7:2012:2013 Edition
$142.49
Radiofrequency identification of animals – Synchronization of ISO 11785 identification systems
| Published By | Publication Date | Number of Pages |
| BSI | 2013 | 28 |
This part of ISO 24631 specifies rules and procedures for synchronizing RFID transceivers while reading transponders used in individual animal identification complying to ISO 11784 and ISO 11785.
The synchronization scheme described herein may be fully implemented within each reader, and such readers when attached to the synchronization bus create a peer-to-peer network (all readers are equal — there is no dedicated master). Additionally, a cluster of readers, which could be in a master/slave configuration, may also be added to the bus using a dedicated, manufacturer specific Synchronization Interface. The Synchronization Interface presents to the synchronization bus electrical characteristics identical to those of a single peer-to-peer reader.
The transceiver conformance standard ISO 24631-2 permits activation on/off timing tolerances of −0/+1 ms and therefore gives reader manufacturers options as to their preferred method for detecting the HDX header; partial or full. However, when synchronizing readers, irrespective of which header detection method is used, it is critical that all readers adhere strictly to the specific timings and timing tolerances as given in the timing diagrams.
Particular attention should also be given to fault diagnostics which becomes more important when a reader network comprises products from different manufacturers. The obvious case is where a reader which is part of a network has become detached e.g. sync cable break, and it considers it’s self to be now standalone and thus permitted to operate asynchronously to the detriment of all other readers.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 6 | Foreword |
| 7 | Introduction |
| 9 | Section sec_1 Section sec_2 Section sec_3 1 Scope 2 Normative reference 3 Terms and definitions |
| 10 | Section sec_4 Section sec_5 Section sec_5.1 Section sec_5.2 4 Abbreviations 5 Synchronization protocol 5.1 HDX detection 5.2 FDX detection |
| 11 | Section sec_5.3 Section sec_5.4 Section sec_5.5 Section sec_5.5.1 Section sec_5.5.2 5.3 MRS (Mobile Reader Sync) 5.4 Synchronization signals 5.5 Reader states |
| 12 | Section sec_5.6 Section sec_5.6.1 Section sec_5.6.2 Section sec_5.6.3 Section sec_5.6.4 Section sec_5.7 Section sec_5.7.1 5.6 Period extensions 5.7 Possible situations |
| 13 | Figure fig_1 Section sec_5.7.2 Figure fig_2 Section sec_5.7.3 |
| 14 | Figure fig_3 Section sec_5.7.4 Figure fig_4 Section sec_5.8 Section sec_5.8.1 5.8 Possible error situations |
| 15 | Figure fig_5 Section sec_5.8.2 Figure fig_6 Section sec_6 6 System overview |
| 16 | Section sec_7 Section sec_8 7 Electrical specifications of bus 8 Synchronization method |
| 17 | Figure fig_7 |
| 18 | Figure fig_8 |
| 19 | Figure fig_9 Section sec_9 9 Hardware suggestion for the synchronization circuit |
| 20 | Figure fig_10 Section sec_9.1 Figure fig_11 9.1 Logic block |
| 21 | Section sec_9.2 Figure fig_12 Section sec_9.3 9.2 Synchronization detector 9.3 Transformer specifications |
| 23 | Annex sec_A Figure fig_A.1 Figure fig_A.2 Annex A (normative) Synchronization timing diagram |
| 24 | Figure fig_A.3 |
| 25 | Reference ref_1 Reference ref_2 Reference ref_3 Bibliography |
