Communications: electrical – Systems – Selsyn type
Patent
1986-10-24
1989-02-14
Crosland, Donnie L.
Communications: electrical
Systems
Selsyn type
340310R, 34082506, 375 1, 375 37, 455 3, H04M 1104
Patent
active
048049387
ABSTRACT:
A bidirectional data communications distribution network is established between the system operations center (SOC) and customer terminals of a load management and electrical energy distribution system. The distribution network comprises independent processor controlled, primary communications interface units (PCI) in communication with the SOC over telephone lines or other medium. Each PCI is in turn in communication with a plurality of independent processor controlled, secondary communications interface units (SCI) over electrical utility primary distribution power lines. Signals between PCIs and SCIs on the primary distribution power lines are code division multiplexed using direct sequence spread spectrum (DSSS) signal processing. Each SCI continuously polls a number of assigned customer load terminals on the low voltage side of the electrical energy distribution system, storing and calculating meter register readings and load status.
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"Pseudonoise Signalling For Power Line Carrier Applications"; IEEE, pp. 1-6; 8-1985.
Horwitz Lawrence B.
Rouse Donald W.
Wiggins E. Thomas
Asman Sanford J.
Crosland Donnie L.
Sangamo Weston, Inc.
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