Asphalt Mixing Station Proportion Control Design

Along with the social development, transport, economic growth became one of the key factors. The growing volume of traffic, large, heavy vehicles and the emergence of on the highway grading higher and higher demands, according to the United States and Japan and other advanced countries in the highway construction experience with the level of high-grade highways, the construction speed and the economy as a whole impact of development costs is crucial. Do a good job in Highway Construction and promoting highway construction equipment and the technical level is crucial. Asphalt Mixing Station as in the construction of highway occupancy of the largest funds, the highest technical content of equipment, its equipment or become advanced level of highway construction speed and impact of the level of constraints.This paper is in accordance with the current domestic asphalt mixing plant available in the market on the basis of the level of technology, and advanced foreign asphalt mixing plant control, production technology than relative, according to the actual needs of construction machinery market, according to modern control technology, modern electronic technology, computer technology, control theory and information technology and other technical knowledge, to make use of existing asphalt mixing plant machinery on the basis of the level of technology, by using programmable logic controller (PLC) on the realization of the entire asphalt mixing plant, as well as peripheral equipment annex modules control, in particular for control of the weighing system to achieve high-speed, high-precision control and improve the reliability of the system and achieve the production process automation, and efficient large-scale production requirements.This paper describes in detail the six chapters. The first chapter of the asphalt mixing plant control technology at home and abroad the status quo, control technology as well as the development trend of papers on the main content and significance. The second chapter of the asphalt mixing plant control system and the structure of the composition and work principles are introduced. Chapter III describes the asphalt mixing plant weighing the overall system design, weighing on the entire system and the composition of the various parts and functions of each module's choice, and the focus of the paper. Chapter IV from the aggregate weighing system, powder weighing system, Asphalt weighing system on the three-part system of weighing the preparation of a detailed procedure that is also an important part of the paper. Chapter V of the system linking and debugging, as well as debugging problems encountered in the process were analyzed and discussed. Chapter VI on the subject of the overall general and problems such as summarized.The asphalt mixing plant weighing system is highly automated, high-efficiency, high-precision weighing characteristics such as a programmable controller used as a data acquisition and processing of the core equipment, to achieve the automation of the control system. Advanced hardware and software technologies and design optimization of the entire system reliability have been greatly improved, the process can achieve control of unmanned management, application reliable, low failure rate, with enormous economic cost-effectiveness, and ability to meet domestic projects construction of the needs of the market and has broad application prospects.