Study And Implement The Control System Of Vehicle Integrated Effective Degreasing Equipment

There is only one Earth in the world. With the development of industry, discharge of sewage increases steadily, the damage to the environment become more and more gravely. And now, People pay more attention to the pollution cased by sewage which contains oil. The environmental protection branch takes this sewage as one of the main industrial pollution source.First, this paper introduces the background, the source and the meaning of the project, and the present situation of auto control using in sewage treatment, then particularly illuminate the function of each part of the device, and the technological requirements.Then, analyze both control of water position of the coagulation& precipitation jar and coalescence jar and control of filtrate rate of the whole device are typical process control system, the wide used PID controller has been proved to an excellent controller. For control the outer water quality, because there are many factors affecting the water quality. It is inefficient to using the tradition control method. The Fuzzy Controller Technology is one main part of The Intelligent Control Technology, In order to make the system run intelligently, stably, economically and efficiently, using the fuzzy controller to control the medicament quantity.Then, design both hardware and software for the device. For hardware, control system adopts three-ply structure "industry computer-mesosphere (main control unit)-the field executed device". Giving a brief introduce of the computer and the field devices. Then focus on the main control unit, it is composed of five models: data process and control model, digital signals input model, digital signals output model, analog signals input model and analog signals output model. The paper explains the components, the circuit frame, and the principle of some circuit of each module in detail. And for software, introduce two parts: interface and programs of the embedded processors. The interface was written using MCGS. The embedded program, in order to make the program of data process and control model run simple and high-effect, uC/OS-II OS has been transplanted, gives the program frame of the Input and Output models.Finally, summarizing the work done in this paper, and giving some ideas for the future research.