Accession Number : ADA254103


Title :   A Seam Tracking Modulated Infrared Optical Sensor for Use in Welding


Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OH


Personal Author(s) : Wu, Minsheng ; Chen, Wuzhu ; He, Fangdian ; Yan, Bingyi ; Su, Yong


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a254103.pdf


Report Date : 03 Dec 1991


Pagination or Media Count : 18


Abstract : This article describes a weld seam tracking sensor which has a type of pulse modulated infrared beam as its signal light source. Going through signal reception filters and 'adaptive elimination of noise' processing, it is possible to effectively overcome interference from electric arc light. Making use of the light source pulse driven characteristics, the instantaneous signal power is greatly added to, improving the adaptation of optical sensors to the surfaces of pieces of work. The sensors' structure is simple. Their volume is small. Their sensitivity is high. And, they are capable of realizing, at the same time, automatic tracking of weld seams in the two horizontal and altitude directions. It is capable of precision tracking in both submerged arc and open arc automatic welding.


Descriptors :   *ELECTRIC ARCS , *WELDING , VOLUME , PROCESSING , STRUCTURES , LIGHT , TRACKING , SENSITIVITY , TIME , WELDS , SURFACES , LIGHT SOURCES , PULSES , SIGNALS , PRECISION , INTERFERENCE , TRANSLATIONS , POWER , WORK , SIGNAL LIGHTS , AUTOMATIC TRACKING , FILTERS , NOISE , RECEPTION , ADAPTATION , MODULATION , ALTITUDE , ELIMINATION , AUTOMATIC , PULSE MODULATION


Subject Categories : Metallurgy and Metallography


Distribution Statement : APPROVED FOR PUBLIC RELEASE