Remote measurement of high voltage AC with radar

Details Remote measurement of high voltage AC with radar Remote measurement of high voltage AC with radar

1987-12-17

1989-06-06

Karlsen, Ernest F.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

With waveguide or long line

324 77A, G01R 1900

Patent

active

048375039

ABSTRACT:
The invention concerns an apparatus and technique for detecting the voltage of A.C. high voltage lines. A radar wave is transmitted towards the high voltage lines and is reflected to a detector when the AC voltage drops to threshold level. Reflection continues until the AC voltage cycles to the threshold level on it second half of the cycle. A time interval is calculated for radar reflection and non-reflection, and a ratio thereof is calculated by a microprocessor which generates a display indicating the voltage carried by the AC lines in accordance with the time interval ratio.

REFERENCES:
patent: 4135152 (1979-01-01), Stuchly et al.
Lange, W. J.; "Microwave Measurement . . . "; The Journal of Vacuum Science and Technology; vol. 7; No. 1; Jan.-Feb. 1970; pp. 228-232.

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