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Title: Spread Spectrum Systems For Efm And Scada
Author: Ben Hamilton
Source: 2008 International School of Hydrocarbon Measurement
Year Published: 2008
Abstract: The spread spectrum radio, especially the Frequency Hopping Spread Spectrum (FHSS), is becoming the preferred communications technology for the EFM and SCADA systems. The Federal Communications Commission (FCC) allocated spectrums in 3 bands for unlicensed use (CFR 47, part 15 - the FCC rules). Equipment manufacturers developed high quality, low cost equipment with robust features. The end users of this technology have accepted the innovations and are quickly deploying it. The demand for more information and the ability to remotely effect well site automation equipment will accelerate the use of this technology. Most Electronic Flow Meters (EFMs) are equipped with a local console communications port and one or more ports for remote communications. The most common method used to provide remote communications to a group of meters is with a FHSS radio network. The most common FHSS network is point-to-multi point. The network host is usually interfaced to the master at the hub of the network and the EFMs are connected to the remotes.

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