• DOMINANT TECHNOLOGIES IN “INDUSTRY 4.0”

    WAVELET ANALYSIS OF ACOUSTIC SIGNALS

    Industry 4.0, Vol. 3 (2018), Issue 3, pg(s) 138-140

    In modern warfare there has been increased use of various weapon systems like tanks, artillery, mortars, infantry armored vehicles, multiple launch rocket system (MLRS). Hostilities often are conducted in densely populated urban areas, where most victims are given by the civilian population. It is the application of systems of detection and reconnaissance sources of sound (the weapons), and also the quick disclosure of their locations. It achieves a “rapid response” of the threats and reduces casualties. Wavelet analysis offers a quick way to process acoustic signals received in the shooting which provides the opportunity for quick reconnaissance and defining sources of sound.

  • DOMINANT TECHNOLOGIES IN “INDUSTRY 4.0”

    TESTING THE SYSTEMS OF THE AUTONOMOUS AGRICULTURAL ROBOT

    Industry 4.0, Vol. 3 (2018), Issue 3, pg(s) 134-137

    The aim of the paper was to test of the concept of the navigation system for the autonomous robot for sowing and wide row planting. Autonomous work of the robot in the field of traction and agronomic processes is implemented based on data from many sensors (cameras, position sensors, distance sensors, and others). The robot is intended for ecologic cultivation requiring mechanical removal of weeds or in crops with application of selective liquid agrochemicals limited to the minimum. The use of a vision system, based on the map coordinates of the position of the sown seeds, allows for their care on an early stage of plant development. Main sensor system is based on a specialized GPS receiver and inertial navigation providing position information with an accuracy of around 10 mm. To determine the angular acceleration the IMU (Inertial Measurement Unit) is used. Additionally, information from the acceleration sensors and wheel encoders is used for navigation purposes. This system is used to: control the speed of the robot, keep the robot on the designated path, and detect the precise position of the seeds. The exact information of the seeds position is used to build maps of seeds, which will be used as supporting information for precision weeding, and to control the position of and operation of key components. The front camera view is used to increase positioning accuracy of the robot. It will allow corrections of the robot path regarding the rows of plants. The vision system is also used for detection of non-moving objects. A structure of requirements for the SQL database has been developed, which is used to store plant and weed geo-data, as well as store data about plants and weeds, based on images recorded by the vision system.

  • DOMINANT TECHNOLOGIES IN “INDUSTRY 4.0”

    INDUSTRY 4.0: REQUIRED PERSONNEL COMPETENCES

    Industry 4.0, Vol. 3 (2018), Issue 3, pg(s) 130-133

    The rise of Industry 4.0 and of smart factories along with all enabling technologies such as cloud computing, Internet of Things, multi agent systems, cyber physical systems, artificial intelligence, etc. will transform current factory workers to knowledge workers. Hard work and routine tasks will be executed by machines or robots, while tasks requiring experience, intuition, creativity or decisions making based on uncertainty will still reside to humans. This constitutes a huge shift on the required competences. Further, this change is transforming manufacturing to a software intense business, where software development and operation is a core part of the manufacturing process, but as well as of the products being manufactured either as a standalone component or as a part of a larger product or service. The need is prominent, since we need urgently to study the knowledge and competences needed for manufacturing personnel of the near future. In this paper, we present an initial competence model where will outline the knowledge dimensions and skills needed for Industry 4.0. This model can be used to create training proposal individuals or for assessing the knowledge gaps existing in an enterprise. The identified skills are classified as technical, behavioral and contextual.

  • DOMINANT TECHNOLOGIES IN “INDUSTRY 4.0”

    ONE WAY FOR CREATING VISUAL EFFECTS

    Industry 4.0, Vol. 3 (2018), Issue 2, pg(s) 90-93

    In this article is exposed one way for creating digital illustrations for commercial purpose. The method combines traditional drawing and calligraphy, 3Ds Max, VRay and Photoshop. The idea of the article is to demonstrate how to build an entire project from the scratch. The purpose of the article is to show how different software for graphic designing with different purpose can be combined together with a traditional art in order to achieve maximum as a result.

  • DOMINANT TECHNOLOGIES IN “INDUSTRY 4.0”

    A RESEARCH ON THE STATIC STABILITY OF THE MAVS USING VIRTUAL TUNNELS

    Industry 4.0, Vol. 3 (2018), Issue 2, pg(s) 86-89

    This report discusses the using of a free software to determine the aerodynamic coefficients of a developed MAV. The coefficients obtained, as well as the aerodynamic forces and moments, have been investigated for their applicability in the balancing and static stability of this type of aircraft. The results of the work are used to synthesize a suitable autopilot.

  • DOMINANT TECHNOLOGIES IN “INDUSTRY 4.0”

    MOLD DESIGN AND PRODUCTION BY USING ADDITIVE MANUFACTURING (AM) – PRESENT STATUS AND FUTURE PERSPECTIVES

    Industry 4.0, Vol. 3 (2018), Issue 2, pg(s) 82-85

    This paper covers the advanced Additive Manufacturing (AM) techniques applied to injection mold design and production. Its aim is to do a comprehensive analysis on what AM is doing for the recent and future perspectives in the field of mold’s production.

    Further analyses are done on the possible use of Rapid Tooling (RT) techniques based on AM technologies. These include plastic mold inserts made using high strength polymer resins and metal-based technologies for direct tooling work.

    Moreover, the work also reviews conformal cooling channel design based on laser sintering AM technologies and its effect in improving mold cooling efficiency to reduce cycle times, which is an important issue in the injection molding process.

    Finally, a brief techno-economical analysis is presented, as well as a comparison between the two different types of molds – the conventional ones, and molds produced by rapid tooling. The conclusions leads toward future usage of RT and AM in the mold design and
    production.

  • DOMINANT TECHNOLOGIES IN “INDUSTRY 4.0”

    ELECTRICITY GENERATION BY MEANS OF MICROORGANISMS FROM DIFFERENT PHYSIOLOGICAL GROUPS

    Industry 4.0, Vol. 3 (2018), Issue 2, pg(s) 80-81

    Microorganisms from three different physiological groups (sulphate-reducing, iron (III)-reducing and fermenting bacteria) were used to generate electricity by means of two-sections microbial fuel cells. The power generation by this system varied within a large area (from 250 to 3200 mW/m2) and depended on the type,form and quantity of the organic donors of electrons, the enzymatic activities of the microorganisms in the anodic section and the efficiency of aeration in the cathodic section.

  • DOMINANT TECHNOLOGIES IN “INDUSTRY 4.0”

    ERGONOMIC EVALUATION OF BASIS MANUAL ASSEMBLY OPERATIONS WITH INTEGRATION OF SIMULATION TOOLS

    Industry 4.0, Vol. 3 (2018), Issue 1, pg(s) 34-38

    This paper describes the development of a simulation model. The model deals with the role of assembly worker in the virtual environment with an emphasis on ergonomics and time analysis. Firstly, we analyse time reports of common tasks in manufacturing processes like reaching, lifting etc. We receive time reports from three different methods: analytical MTM method, Siemens JACK 8.4 simulation and practical experiment. Secondly, we look into influential parameters, dimensions and mass of object, which affect the time reports. The results of our research show us that the parameters have different weight of importance. The main goal of this paper is to propose suggestions and guidelines for a worker-friendly environment from an automated generated ergonomic report of JACK simulation. We also ergonomically evaluate the task of lifting with the NIOSH method and propose improvements.

  • DOMINANT TECHNOLOGIES IN “INDUSTRY 4.0”

    RESEARCH ON THE CAPABILITIES OF COLOR TONER-BASED PRINTER FOR QUALITY PRINTING USING CUSTOM GENERATED ICC COLOR PROFILES

    Industry 4.0, Vol. 3 (2018), Issue 1, pg(s) 39-42

    The paper presents some of the results, obtained during the research on scientific project at TU-Sofia № 171ПР0012-06 “Research on the influence of using raster image processors (RIP) on the quality of color printing of digital proofing systems“. The purpose of the paper is to present a research on the quality of color printing of and toner based printer using custom generated ICC profiles. Before the current research, the printer is properly adjusted, calibrated and linearized according to the method published in previous research of the author. The generated profiles are then thoroughly tested and analyzed using specialized software. Their color gamut is compared to the standard offset gamut. The color rendering of the profiles is evaluated through testing and a general conclusion of the benefits of the process is provided.

  • DOMINANT TECHNOLOGIES IN “INDUSTRY 4.0”

    CONSTRUCTION OF A PRELIMINARY AUTONOMOUS ENERGY SYSTEM USING REGENERATIVE ENERGY

    Industry 4.0, Vol. 3 (2018), Issue 1, pg(s) 27-29

    Building up a low-carbon society has become one of the world’s common challenges. ‘Power to Gas’ efforts – to convert electric power derived from renewable energy into hydrogen – are being actively conducted, mainly in Germany. Similar efforts are

    being made in Japan. For example, concerned Japanese cabinet members agreed on a ‘ Hydrogen basic strategy ‘ on Dec. 26 2017. This strategy, with a view to 2050, shows direction and vision toward the realization of a hydrogen society and compiles an action plan to achieve that goal. It aims to scale up hydrogen consumption volume from 0.4 ten thousand t (2020) to 30 ten thousand t (2030) and deduct the unit price of hydrogen from ¥100Nm3 (now) to ¥30Nm3 (2030).We will also try to construct a preliminary autonomous energy system using regenerative energy. In this paper, the operation and function of such a system is described.