1 preface
Background, purpose and significance of the project "1. 1"
Project background 1. 1. 1
The development of electronic technology promotes the development and application of microprocessor, which makes microprocessor develop in the direction of high speed, high integration, low price and high performance. Nowadays, microprocessors are widely used in life, industry and other fields. In particular, it has the characteristics of high cost performance, long service life and high degree of automation to transform backward equipment controllers with microprocessors.
Electric boilers are widely used in many fields. In many fields, the performance of electric boilers determines the quality of products. At present, the control system of electric boiler mostly adopts computer control technology with microprocessor as the core, which not only improves the automation degree of equipment, but also improves the control accuracy of equipment. [ 1]
This topic comes from the process control laboratory. Electric boiler is a mechatronics product, which can directly convert electric energy into heat energy. It has the advantages of high efficiency, small size, no pollution, safe and reliable operation, stable heating and high degree of automation. It is an ideal energy-saving and environment-friendly heating equipment. Coupled with the improvement of people's awareness of environmental protection at present, people pay more and more attention to electric boilers, and their application in industrial production and domestic water is becoming more and more popular. At present, electric boilers are mainly used for heating and providing domestic water. Mainly to control the water temperature and ensure constant temperature water supply.
With the rapid development of computer and information technology, single chip microcomputer is widely used in industrial control. Industrial control is more and more controlled by computer, so we use AVR series single chip microcomputer as controller.
1. 1.2 the purpose and significance of the topic.
The controller is mainly designed for the control equipment of the process control laboratory. It is the need of laboratory construction to control the temperature of electric boiler of process control experimental equipment. Choosing this topic can exercise our ability and provide us with an opportunity to combine theory with practice. Through this graduation project, we can further understand the knowledge of single chip microcomputer programming, automatic control theory, detection technology and instruments, so as to consolidate our knowledge and broaden our horizons. At the same time, because our knowledge is very limited, we have to learn a lot by ourselves, which also exercises and improves our self-study ability and lays the foundation for improving our competitiveness in the future. [2]