Abstract
The development and application of MCU (Micro Control Unit) have made a great change in many fields of modern industrial detect and control. Because of the small scale, low price and high efficiency of MCU, it is widely used in home appliances and industrial control. in the process of producing. Current, voltage, temperature and pressure are usually the parameter to be monitored.
The design of “The temperature control system based on MCU of is introduced in this paper. As a typical design in large inertia control system, the design needs the knowledge of automation theories, analog and digital electronics. A digital PID controller is used in the system, which is called DDC(direct digital control)system. The DDC system can not only replace the analog system, but also can realize the more complicated rules of control through changing the program of software, not even changing a component in the electro circuit. It can improve reliability of whole system.
This paper mainly includes the introduces of AT89S52 and the general chips which are used in the system, the design of hardware and software. There are seven parts in this paper: Chapter 1 describes the background knowledge of the system and the general design of the system. Part 2 and Part3 introduces the basic knowledge of 8031 and the chips which are used in the system. Chapter 4 introduces the design of hardware of the system and Chapter 5 introduces the software design. There is a general conclusion in the end of the paper.
