Apparatus for data transmission from multiple sources on a singl

Details Apparatus for data transmission from multiple sources on a singl Apparatus for data transmission from multiple sources on a singl

1988-02-10

1989-01-03

Curtis, Marshall M.

Communications: electrical

Continuously variable indicating

With meter reading

34087011, 34087013, 34082506, 34082569, 324127, G08C 1506

Patent

active

047960272

ABSTRACT:
Self contained radio transmitting modules are mounted on power conductors at various places along electrical transmission lines. The modules are capable of measuring current, voltage, frequency and power factor (or the Fourier components thereof), the temperature of the conductor and the temperature of the ambient air. Up to fifteen modules may transmit on a single channel to a single local receiver. Each module transmits at intervals which are an integral number. The intervals between transmissions of all modules do not have a common factor and the average interval is the desired transmission rate.

REFERENCES:
patent: 3942170 (1976-03-01), Whyte
patent: 4158810 (1979-06-01), Leskovar
patent: 4332027 (1982-05-01), Malcolm et al.
patent: 4573115 (1986-02-01), Halgrimsen
patent: 4604618 (1986-08-01), Akiba et al.
Stephen D. Foss, Sheng H. Lin, and Roosevelt A. Fernandes, Dynamic Thermal Line Ratings, Part I, IEEE paper No. 82 SM 377-0, presented at IEEE PES 1982 Summer Meeting.
Stephen D. Foss, Howard R. Stillwill, Sheng H. Lin and Roosevelt A. Fernandes, Dynamic Thermal Line Ratings, Part II, IEEE paper No. 82 SM 378-8 presented at IEEE PES 1982 Summer Meeting.

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