Transport of the coal in treating pit-face to loading place realized with the help of scraper conveyor. Scraper conveyor is vehicle of continuous moving, drawbar part of which is endless chain (one, two or three) with scrapers, fixed on it. By moving of the chain scrapers absorb transporting material and move it along the gutter towards chain move.

        The aim of the projecting is the increasing of the effectiveness of the coal transport process along the treating pit-face by means of basing the algorithm and structure of the automatic apparatus and development of the double-driver conveyor.

        The system of the automatic electronic driver control of the buttomhole scraper chain must provide:
        - separate engaging of upper and under homing station;
        - feeding the automatic alarm signal along the whole length of conveyer before start;
        - heightened starting moment;
        - formation of the next taxigramm of the conveyer start: on the first phase smoothly increase the driver speed to the level of "creeping" speed. On this phase one choose gaps in feeding and tension of the working chain taut side. On the second phase the level of "creeping" speed of conveyer driver is supported. Size of this speed should provide the possibility of human convergence from conveyer flight without difficulties (the "creeping" speed should not exceed 0.3 meters per second). The duration of the driver work on the level of "creeping" speed should last long enough for a human leaving the conveyer flight (5-7 seconds). Then, on the third phase it is made the smooth acceleration till the nominal speed;
        - time limitation of effort holding by unsuccessful start (6-8 seconds) for avoiding the electric drivers overheating;
        - automatic gumming of the conveyer;
        - conveyer tripping from machine console, control panels established in the pit-face (every 10 meter) and it's driver stations;
        - automatic conveyer tripping in open-circuit fault;
        - automatic defense of drivers and conveyer pull chain from dynamic overwork by seizure of the chain;
        - the possibility of getting the special receiving speed (no more than 0.7 meter per second);
        - conveyer effort limitation on the half level of nominal effort by work with receiving speed.

        Researches of the buttonhole conveyers work regimes, let in out country and abroad showed the whole row of essential disadvantages, peculiar to the conveyer system, that consist of two non-controlled electric drivers, linked with scraper chain. To the most material one may refer to the following:
        - not enough efficient smoothing of the loading between drivers;
        - necessity of relatively bigger scraper chain pull to avoid scraper turning and stowage of the chain segments, that increases scrapper chain friction with pan and brings down the term of it's exploitation and coefficient of efficiency of the system in whole;
        - presence of the hydraulic start avoiding sockets brings down safety and reliability of the conveyer work.

        The inculcation of the serial apparatus AUP-110E for conveyer drivers with electromagnetic sliding socket let partly remove sowed disadvantages and to receive some extra advantages. Beside more coordinated work of drivers by conveyer start, the regime of the automatic conveyer gumming without its electrical drivers reverse was realized. Also level driver smoothing in work process, lower ("creeping") chain speed after successful conveyer start during 10 seconds, fall of the chain speed and limited efforts in auxiliary regime of the conveyer work.

        Besides, the researches showed that separate regulating of the electric drivers helps not only smooth the load, but also rationally distribute it between the drivers. Because of rational smoothing of the load one can lower the pull power of the free chain with incomplete conveyer load that helps to increase the coefficient of efficiency and to lower deterioration of the chain.

        Earlier the AUP-110E was used as basic technical automatic system solution for regulating of the buttonhole scraper chain conveyer. The question of pull chain defense from dynamic overwork was solved not enough effective, that is why one should develop a new overworking defense block. Taking this changes into account one should change the algorithm of the functioning of the control system. Also there will be new sensors added, but there is no need to change basic elements of existing system (like control elements, explosion protection, indication elements).

        Hence, the most acceptable way of improving the automatic system is adding to the system of automation the developing block that provides the fulfillment of required functions. Because of the functioning algorithm complication of the control system it's necessary to fulfill this block of apparatus based on microcontroller, that will help to set algorithm of the functioning automatic control system in programming way. It lightens the creation of the system and lets to create more efficient control algorithms. Also the use of the microcontroller will let to treat received sensor information more efficiency, with the ability to derive it on indication element and (if needed) to the computer. Besides the use of the microcontroller by automatic control system making will help to diminish the size of the block, to increase its reliability. Easiness or re-programming if modern microcontroller helps to improve control algorithm avoiding big expenses of time and without structural change of the system.

        During the work the technological process of coal transporting was analyzed, as the object of automation, the theme of master's thesis was formulated and demands to the process automation system was made. The critical review of known technical decisions in automatic process of coal excavation was developed, also the further automatic direction of researched process.

        The basis was made, the mathematical model was created, that research the influence of current magnitude on ESS on maximal efforts of elastic pull by scraper chain seizure.

        Later on the researches of the stopping process of the scraper conveyer will be continued. In plans carried on of the more powerful device, by bringing in scheme the sensor that will react on elastic effort in the conveyer chain, able to switch off power from field coils, in that way diminishing the possibility of emergency conditions connected with seizure of pull chain of scraper conveyer.

        Also in master's thesis will be made the algorithmization of the automatic system, development of circuit solution of automatic device, namely structural system scheme of algorithmizated apparatus of the technological process. Also there will be developed basic electric scheme for that system. In further plans are development of the hardware for apparatus and elaboration of integration solutions for automatic apparatus.