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When preparing raw materials for the manufacture of ceramic products (clay), a significant amount of metallic impurities falls into it. With further technological operations, such raw materials are a source of danger for equipment that can fail if metal inclusions get into it, or the process line. In this regard, an urgent task is the development of a subsystem for controlling metallic inclusions in raw materials, as a functional component of the overall system of automatic control of the technological process of manufacturing ceramic products. Modern systems for controlling metal inclusions are poorly integrated into existing process control systems, and often their integration is reduced to sending discrete signals about the presence of such inclusions in raw materials to the central controller or directly activating the general emergency button. As a result, the efficiency of such a system is low. The possibility of integration of the system for controlling metallic inclusions into raw materials in the conditions of a belt conveyor (a patent of Ukraine is obtained for the system) in the central process control system for the manufacture of ceramic products (bricks, tiles, etc.) is considered by the authors based on the scanning signal method. To do this, an analysis of industrial data transfer protocols was carried out: Profinet, ProfiBus, ModBus based on the results of which the ModBus protocol was chosen due to the openness of the structure of the protocol itself and the simplicity of the hardware. The protocol allows you to easily exchange with the central control system a large number of analog and discrete signals. The development of a ModBus module for the integration of the metal inclusion control subsystem into the central control system is considered. For maximum flexibility, it is possible to change the data transfer rate, set the protocol service bits, as well as the address of the device itself. The developed ModBus-module allows for full two-way exchange of information between the subsystem of control of metallic inclusions and the central control system for determining the overall dimensions of metallic inclusions, their location along the conveyor belt, as well as other important parameters.
Control system, executive devices, measurement, metallic inclusions, data transmission system, conveyor line
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