Automatic Color Inspection for Colored Wires in Electric Cables

In this paper, an automatic optical inspection system for checking the sequence of colored wires in electric cable is presented. The system is able to inspect cables with flat connectors differing in the type and number of wires. This variability is managed in an automatic way by means of a self-learning subsystem and does not require manual input from the operator or loading new data to the machine. The system is coupled to a connector crimping machine and once the model of a correct cable is learned, it can automatically inspect each cable assembled by the machine. The main contributions of this paper are: (i) the self-learning system; (ii) a robust segmentation algorithm for extracting wires from images even if they are strongly bent and partially overlapped; (iii) a color recognition algorithm able to cope with highlights and different finishing of the wire insulation. We report the system evaluation over a period of several months during the actual production of large batches of different cables; tests demonstrated a high level of accuracy and the absence of false negatives, which is a key point in order to guarantee defect-free productions

Manufacturing and quality control of interconnecting wire harnesses, Volume 2

Interconnecting wire harnesses defined in the design standard are considered, including type 4, open bundle (not enclosed). Knowledge gained through experience on the Saturn 5 program coupled with recent advances in techniques, materials, and processes was incorporated into the document

The use of electro-mechanical aids in industrial management

Thesis (M.B.A.)--Boston UniversityFrom that eventful day in 1750 When electrical current was first discovered and through the succeeding years Where such famous inventions as the electric light, the telephone, and generation of alternating current, were brought into being, to this present age of electronic development, the electro~echanical aids available to industrial management have mounted in number. Many of the basic inventions of the Nineteenth Century, although they have been improved steadily, are accepted as commonplace. Take for instance, the telephone or the electric light, little thought is given to their importance in everyday life. It takes a sudden power failure to firmly indicate our dilemma. In the modern factory loss of power can result in stoppage of machinery, loss of time and costly damage. Many of the newer windowless plants depend on artificial light for their existence; thus, loss of light by power failure can cause accidents in addition to the foregoing results

Reduction of Winding AC Losses by Accurate Conductor Placement in High Frequency Electrical Machines

© 1972-2012 IEEE. In the design of electrical machines, the increase in power density has become one of the main research themes. With most of the power loss in high power density electrical machines often being generated in the stator winding assembly, it is necessary to reduce these losses. The effects of strands and bundle positions in the slot on the ac losses in the winding are often overlooked. Taking as a case-study an existing high-frequency machine, this article analyzes and provides an in-depth insight into such effects. Exploiting the rapid advancements in precision three-dimensional printing, it is found and experimentally verified that by controlling the position of the conductors within the top of the slot the ac losses can be markedly reduced

Applications of Computer Vision Technologies of Automated Crack Detection and Quantification for the Inspection of Civil Infrastructure Systems

Many components of existing civil infrastructure systems, such as road pavement, bridges, and buildings, are suffered from rapid aging, which require enormous nation\u27s resources from federal and state agencies to inspect and maintain them. Crack is one of important material and structural defects, which must be inspected not only for good maintenance of civil infrastructure with a high quality of safety and serviceability, but also for the opportunity to provide early warning against failure. Conventional human visual inspection is still considered as the primary inspection method. However, it is well established that human visual inspection is subjective and often inaccurate. In order to improve current manual visual inspection for crack detection and evaluation of civil infrastructure, this study explores the application of computer vision techniques as a non-destructive evaluation and testing (NDE&T) method for automated crack detection and quantification for different civil infrastructures. In this study, computer vision-based algorithms were developed and evaluated to deal with different situations of field inspection that inspectors could face with in crack detection and quantification. The depth, the distance between camera and object, is a necessary extrinsic parameter that has to be measured to quantify crack size since other parameters, such as focal length, resolution, and camera sensor size are intrinsic, which are usually known by camera manufacturers. Thus, computer vision techniques were evaluated with different crack inspection applications with constant and variable depths. For the fixed-depth applications, computer vision techniques were applied to two field studies, including 1) automated crack detection and quantification for road pavement using the Laser Road Imaging System (LRIS), and 2) automated crack detection on bridge cables surfaces, using a cable inspection robot. For the various-depth applications, two field studies were conducted, including 3) automated crack recognition and width measurement of concrete bridges\u27 cracks using a high-magnification telescopic lens, and 4) automated crack quantification and depth estimation using wearable glasses with stereovision cameras. From the realistic field applications of computer vision techniques, a novel self-adaptive image-processing algorithm was developed using a series of morphological transformations to connect fragmented crack pixels in digital images. The crack-defragmentation algorithm was evaluated with road pavement images. The results showed that the accuracy of automated crack detection, associated with artificial neural network classifier, was significantly improved by reducing both false positive and false negative. Using up to six crack features, including area, length, orientation, texture, intensity, and wheel-path location, crack detection accuracy was evaluated to find the optimal sets of crack features. Lab and field test results of different inspection applications show that proposed compute vision-based crack detection and quantification algorithms can detect and quantify cracks from different structures\u27 surface and depth. Some guidelines of applying computer vision techniques are also suggested for each crack inspection application

The Formulation of a Woodworking Studio

None provided

Development of a system of the building facade external illumination

A literature review was conducted, which identified the goals and objectives of outdoor architectural lighting, as well as its purpose and function. Methods and creative means of external architectural lighting are analyzed. The principles of lighting objects of different shapes are established. The stages of designing external architectural lighting are determined. The choice of species directions and characteristic points is made. As a result of the analysis of a kind of objects from various points, it is established that illumination of the external surfaces located between windows will be most expedient. The calculation and selection of normalized illumination is carried out. For surfaces that need to be illuminated, this value is 165.8 lux. LED floodlights of the XLD-ALS6-025WHC 9 W floodlight were selected to illuminate the facade surface.У кваліфікаційній роботі запропоновано освітлювальну систему для підсвічування зовнішнього фасаду будівлі на основі світлодіодних прожекторів. Для даної системи виконано світлотехнічний та електротехнічний розрахунки, в результаті чого встановлено потужність прожекторів, площу поперечного перерізу жил кабелів електричної освітлювальної мережі та вибрано парати захисту.In the qualification work the lighting system for illumination of an external facade of the building on the basis of LED searchlights is proposed. Lighting and electrical calculations were performed for this system, as a result of which the power of the floodlights, the cross-sectional area of the cores of the electric lighting network cables were set and the protection devices were selected.SUMMARY INTRODUCTION SECTION 1. ANALYSIS PART 1.1. Goals and objectives of outdoor architectural lighting 1.1.1. Methods and creative means of architectural lighting 1.1.2. Principles of lighting objects of various shapes 1.2.1. Objects of architectural lighting 1.2.2. Principle of accentuation of face of mutually perpendicular walls SECTION 2. PROJECT DESIGNING PART 2.1. The essence of designing outdoor architectural lighting 2.2. General description of the object and characteristics 2.3. Selection of species directions and characteristic species points 2.4. Choice of normalized illumination 2.5. Selection of lighting fixtures 2.6. Placement of lighting fixtures 2.7. Design of electric lighting network 2.8. Control of the lighting system SECTION 3. CALCULATION AND RESEARCH PART 3.1. Light calculation of the architectural lighting system 3.2. Lighting calculation of lighting installations 3.3. Results of lighting calculation of lighting installations and their analysis 3.4. Calculation and selection of wire cross-section 3.5. Calculation of the amount of electricity consumed by installing the building Lighting SECTION 4. OCCUPATIONAL HEALTH AND SAFETY EMERGENCIES 4.1.1. Taking into account the requirements of artificial lighting for public buildings 4.1.2. First aid for a person affected by electric shock GENERAL CONCLUSIONS REFERENC

NASA Tech Briefs Index, 1977, volume 2, numbers 1-4

Announcements of new technology derived from the research and development activities of NASA are presented. Abstracts, and indexes for subject, personal author, originating center, and Tech Brief number are presented for 1977

Illinois Technograph v. 056, iss. 2 Nov. 1941

published or submitted for publicatio

American White Pelicans

American white pelicans (Pelecanus erythrorhynchos, Figure 1) threaten aquaculture producers by direct predation and the spread of disease. They are also considered competition and a nuisance by some sports fishermen. Pelicans can also damage pond levees and crops, such as rice, by trampling the vegetation and depositing guano. A combination of wildlife damage management techniques is often necessary to reduce pelican damage to these resources. Aquaculture Prior to the winter of 1992, American white pelican depredations at catfish facilities in the Delta regions of Arkansas and Mississippi were limited, and birds were easily dispersed from the area. Since 1992, however, pelicans have become more persistent in their foraging efforts and more difficult to disperse. Their increased persistence requires an equally persistent response to limit their damage. Around-the-clock harassment patrols may be necessary especially where pelicans forage at night. The most effective technique involves harassing the birds at their loafing sites near catfish farms. This often causes them to abandon the site, thus reducing or eliminating predation at nearby facilities