METHOD AND APPARATUS FOR DETECTING BREAKAGE OF STRAND OF TRANSMISSION LINE

METHOD AND APPARATUS FOR DETECTING BREAKAGE OF STRAND OF TRANSMISSION LINE

PURPOSE:To detect breakage of strand in transmission line quickly and automatically by use of two slit light beams. CONSTITUTION:A transmission line 7 is illuminated obliquely with two slit light beams L1, L2 and two elliptical slit images 32, 32 are formed on the transmission line 7. Reflected ligh...

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1. Verfasser: KANEDA MASAHISA
Format: Patent
Sprache:eng
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INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
MEASURING ANGLES
MEASURING AREAS
MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS
PHYSICS
TESTING
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description PURPOSE:To detect breakage of strand in transmission line quickly and automatically by use of two slit light beams. CONSTITUTION:A transmission line 7 is illuminated obliquely with two slit light beams L1, L2 and two elliptical slit images 32, 32 are formed on the transmission line 7. Reflected light is captured by a television camera and an image is detected. Detected image signal is introduced to a signal processing system where the shape of the slit image is extracted from the image signal and converted into fine lines. Longitudinal interval of the slit image subjected to fine line conversion is then compared with a standard value. If the difference exceeds a predetermined value, a decision is made that some strand has broken and the result is recorded. The inspection is carried out over the entire circumference of transmission line.
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subjects INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
MEASURING ANGLES
MEASURING AREAS
MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS
PHYSICS
TESTING
title METHOD AND APPARATUS FOR DETECTING BREAKAGE OF STRAND OF TRANSMISSION LINE
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