The Research Of Fieldbus Base On Seed-Processing Machines

In the process of modernization of China's agriculture, agricultural machinery and equipment automation and modernization of China's agricultural production become an indispensable part. Development of advanced, stable, low-cost seed processing equipment and agricultural production is an important link in the process. This article is mainly based on the analysis of a common market based on the DCS control system seed processing equipment, and the CAN fieldbus vegetable seed processing complete sets of equipment design. Fieldbus discussed in detail in the seed-processing equipment in the application.First, on the DCS distributed control system based on the seed-processing equipment, and its peripheral modules keyboard and display circuits, liquid crystal circuit, RS485, RS232 communication circuits, IIC bus, analog output PWM, AD amplifying circuit for a brief analysis.Secondly, polishing machine as an example, based on the C8051F020 and ATMEGA16-based chips, a polishing machine on the mechanical, electrical and software design processes. At the same time detailed the gravity of the election communications MicroMaster420 inverter control debugging process.Third, in the DCS control system on the programme, and further excavation DCS control system in the seed-processing equipment in the existing problems. According to market a variety of fieldbus, with the characteristics of agricultural machinery and equipment, raised in stable, prices, programming simple CAN fieldbus control. For the system, using easy-to-maintain-bus topology, the design by HK-CAN20C non-smart isolated CAN bus communication boards, discusses in detail the principles of the communication card, communication protocol developed. According to the newsletter and developed a simple card applies to the communications equipment agreement.Fourth, the final considerations to the maintenance of equipment and real-time detection, structure based on VC Programming platform with ACCESS database monitoring software system. Primarily by the system initialization, database management systems, data, Report Generation. The system is the main core database systems, databases containing the main AI, AO, DI and DO four tables.The article on the design of the two systems has done a detailed briefing, and through hardware and software were two of the more prominent aspects of the CAN fieldbus-based control platform in the design of advantages: 1. Digital, 2. Intelligent modules, 3 . system has good stability, 4. transmission speed. DCS system is currently in operational, the FCS as an exploration is a good prospect...