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Airborne Data Acquisition System - Choice of System Communications Medium
Overview
A new airborne Data Acquisition System (DAS) is being designed (1998). The DAS is to be a modular distributed system, thus a standardised communications medium is required. ...
Requirements of the Communications Medium
The relevant requirements of the DAS for communications are outlined below:
100MB/s plus (require todays capacity, plus margin for errors, plus margin for future)
Hot pluggable
Suitable for airborne EMC/EMI environment
Prefer deterministic transfer (real time application)
Analysis
The following table summarises some possible candidates:
Name
Standard
Bandwidth
RTOS support
Cost per point
Comments
SCI
>1GB/s
?
3,000
System interconnect
FibreChannel
250MB/s-1GB/s
?
Approximate Word count = 518 Approximate Pages = 2.1 (250 words per page double spaced)
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