The Study Of DQLON Fieldbus Control System

With the developing of automation technology and computer,the idea of automatic control took place the huge change. In the old automation idea,automatic control is made of independent technology and different product. In order to make up the all product,need use being connected,configrated and adjusted different interface software and hardware.In 90's,It came to a lot of Fieldbus,for example CAN FF HART LONWORKS etc . Because of the defect of old control system,the thesis developed a intelligence module DQLON which were made up intellect distributed control system-Fieldbus control system with Fieldbus standard. Network protocol of DQLON -Lontalk is a complete network system that carried out all seven layer network protocol of international standard organize (ISO) open system intercommunication (OSI). LON Feldbus technology is more advantage aspect than others Fieldbus. The system developed with DQLON technology is exchangeable,not being limited,wide application,low cost,more flexibility. The main question of the thesis is developed DQLON Fieldbus control system with LONWORKS Fieldbus technologyThe DQLON intellect module were used and carried successfully in Xing 9 sewage treatment engineering .