NDLI: Influence of multipath fading on the implementation of a radio sensor as an isolated station on a Web CAN-based control systems

Content Provider	IEEE Xplore Digital Library
Author	Hasnaoui, S. Bouallegue, A.
Copyright Year	1999
Description	Author affiliation: Ecole Nat. d'Ingenieurs de Tunis, Tunisia (Hasnaoui, S.)
Abstract	Industrial Computing Networks based on CAN terrain bus (Controller Area Network) are used in the framework of real time distributed applications. They support the CSMA/CA access technique (Carrier multiple Sense Access/ Collision Avoidance) and can work on several kilometers. Such applications cover the driving of drinking water, the transportation and the distribution of electricity, purification stations systems the oil field or gas exploitation, and multi-agent robot systems. Unshielded Twisted Pair are generally used for the binary signal transmission, nevertheless, when the terrain is injured or the system spreads on great rays, one uses modems of the series V and radios. ASK and FSK Modulations are the better adapted for this access type. The carrier detection allows an easy arbitration of the CAN bus. Codes and modulations, having an important spectral efficiency (PSK and Trellis QAM coding) are to several states and necessitate voluminous processing and are maladjusted to the arbitration of the CAN bus. Nevertheless, normalized modems have too weak debits (300 BPS in Full Duplex to 1200 BPS in Half Duplex) and do not allow possible debits on CAN networks (5 KBPS to 1.6 MBPS). We plan in this contribution to show the influence of the presence of MultiPath Fading (MPF) on the propagation segment and consequently on the real debit of CAN networks. We will give also details of the implementation of emission and reception chains of a sensor modem -radio, as entire unit, to basis of the signal processor TMS320C5XX the micro controller 16 bits Full-CAN Siemens SAB-C167CR-LM and the current generator circuit 4 -20 mA INA105.
Starting Page	475
Ending Page	480
File Size	426692
Page Count	6
File Format	PDF
ISBN	0780352769
ISSN	10915281
DOI	10.1109/IMTC.1999.776797
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1999-05-24
Publisher Place	Italy
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Fading Modems Computer industry Industrial control Computer networks Distributed computing Multiaccess communication Collision avoidance Transportation Purification
Content Type	Text
Resource Type	Article
Subject	Instrumentation Electrical and Electronic Engineering

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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