Introduction: Students majoring in electrical automation want to know how to write a standardized graduation thesis model essay. The following is my reference model essay for you.
Model essay on graduation thesis of electrical automation
First, electrical automation is specifically applied to automatic positioning, dynamic dispatching management system, wireless data communication, etc. In port operation, this greatly improves the efficiency of waterway operation and saves labor cost and manpower expenditure. On the premise of saving resources, the port operation efficiency is greatly improved, so that the waterway work can run efficiently, and at the same time, both economic development and international trade can be met, and both sides can benefit from technological and economic development.
Second, the main factors affecting the development of electrical automation
1, the decisive influence of information technology. Information technology in a broad sense refers to all means by which human beings develop and utilize information, including computers, worldwide high-speed broadband computer networks and communication technologies, as well as related supporting technologies for sensing, processing, storing and displaying various information.
Modern information technology is based on modern electronic technology, so it is also called modern electronic information technology. It takes computer, communication, automatic control, photoelectricity and other modern technologies as the main body, and acquires, transmits, processes, processes and utilizes all kinds of information. Modern information technology mainly includes the basic information technology of microelectronics, photonics, optoelectronics, molecular electronics and other related components manufacturing, the information system technology of systems or equipment that realize the functions of information acquisition, transmission, processing and control, and the information application technology used in various fields of social and economic life.
Information technology has a great leading influence on the development of electrical automation. The development of information technology largely depends on the continuous technological innovation of many disciplines of electrical automation. Conversely, the progress of information technology provides a newer and more advanced tool base for technological innovation in the field of electrical automation.
2. Closer connection with physical science. Due to the invention of triode and the development of large-scale integrated circuit manufacturing technology, solid-state electronics played a great role in promoting the growth of electrical engineering in the second half of the twentieth century. The close connection and intersection between electrical automation and physical science is still the key to electrical automation in the future, which will be extended to biological systems, photonics and MEMS.
3. The rapid development of modern technology. The rapid progress of modern technology and the rapid development of analysis methods and design methods will inevitably lead to the rapid development of electrical automation relying on modern technology.
Third, the development direction of electrical automation
1, electrical automation product innovation
Electrical automation production enterprises can continuously improve their original innovation ability, integrated innovation ability and introduction, digestion, absorption and re-innovation ability under open conditions according to the objectives and tasks put forward by the national medium-and long-term scientific and technological development plan. Further improve the scientific and technological content of our products, develop and produce better electrical automation control systems and products with independent intellectual property rights, increase the development of independent innovation, and provide more and more space. Establish the dominant position of enterprises in technological innovation, improve the institutional mechanism and policy environment, and accelerate the implementation of major national scientific and technological projects. At present, China has formed a market structure in which low-grade products are mainly domestic enterprises and small and medium-sized projects choose domestic products. Electrical automation production enterprises should strive to create a new situation of scientific development, persist in improving the ability of independent innovation, accelerate the transformation of economic growth mode, and constantly improve the ability of independent innovation.
2. The platform of electrical automation system is unified.
The unification of electrical automation system platform can support all stages and links in the automation project cycle, such as design, implementation and testing, debugging and start-up, operation and maintenance. This can greatly reduce the time and cost from design to completion. The unified system development platform can also meet another important demand of users, that is, the development platform is based on the final running platform. According to the characteristics of the project and the needs of end users, it is decided to download the unified running code to hardware PLC, software PLC based on Windows NT, embedded NT system or control system based on WindowsCE.
3. Generalization of electrical automation system structure.
The generalization of electrical automation system structure is very important for a successful electrical automation control system. The network structure of the whole enterprise should ensure the smooth data communication among field control equipment, computer monitoring system and enterprise management system. Enterprise management can monitor the field equipment in real time through internet/Intranet. When planning the system network, the selected network products must be able to ensure the communication in the whole system from the office automation environment to the control level and then to the component level, whether the field bus is selected to communicate with the field devices or the Ethernet is selected to communicate with the superior computer or office system.
4, electrical automation system program interface standardization
Based on Microsoft standards and technologies, such as WindowsXP, OPC and ActiveX, the project time and cost are reduced, and the data exchange and sharing between electrical automation system and office system are facilitated. When connecting MES system and ERP system, the automation solution based on PC platform is very important. Using Windows XP as the operating system and TCP/IP as the communication standard of office environment, PC can establish an optimal interface between automatic control and management platforms. The standardized program interface also ensures the data exchange between software and hardware products of different manufacturers, and effectively solves the communication obstacles between them.
5, electrical automation and safety in production
China electric automation enterprises should realize the general trend of technology multi-system integration in security industry. Emphasize the integration of safety control system and non-safety control system. It is also one of the problems that we should consider at present to let customers realize their own safety scheme with lower development and design cost on the basis of the existing non-safety control system. Electrical automation safety system and products will become a bright spot in the future automation field. According to the characteristics of the market, gradually open up the market. We can start from the application field with the highest safety level requirements and gradually expand to other occasions with lower risk levels. According to the route from plant equipment layer to network layer, from hardware to software, from safety unit to safety system, the safety scheme of electrical automation system is applied. Strive to carry out the design and research of electrical automation safety prevention system. Especially in the field of intelligent integrated building systems.
6. Specialization of operators
In the design and installation of electrical automation system, the training of personnel who are in direct contact with control equipment is often ignored. It is generally believed that it is easier to train personnel when actually operating equipment. Many manufacturers and engineering departments didn't begin to train operators and maintenance personnel until the system was installed and operated. In the process of system installation, let the personnel who maintain and operate the equipment know the installation process at any time, and let them have a perceptual understanding of the new system. Through professional training, operators can better understand why the system should be installed in a certain way. In order to deal with sudden failures and maintenance in harsh operating environment, it is necessary to find out the reasons in advance, otherwise it will affect the correct judgment of the problem. When installing a new system, the operator must master these technologies. During the training period, the company trained skilled operators. When the system is running, the personnel who will contact the new system will master the knowledge of hardware equipment and its operation and maintenance.
With the gradual development of intelligence and informatization, electrical automation will involve more industries and fields, and the technology update will be faster and more complicated. We should constantly absorb high-tech nutrition and create a new situation in the development of electrical automation.
References:
Liu Yongqiang. On the present situation and development prospect of electrical automation in China [J]. Heilongjiang Science and Technology Information.2011(02)
[2] Li Guodong, Ma Dexin. PC-based electrical automation technology [J]. Heilongjiang Science and Technology Information.2011(21)
[3] Xu. Application of Electrical Automation in Coal Machinery Products [J]. Science and Technology Information.2011(04)
Wu Fangjun. Reliability Test and Research of Electrical Automation Control Equipment [J]. Private Science and Technology.2011(06)
[knowledge expansion]
Model essay for graduation thesis-summary and prospect of the development of computer science and technology
Since the popularization of computers in the late 1970s, it has had an immeasurable impact on human economy, military affairs, culture, art, life and even politics in just a few decades. Therefore, it is necessary for us to have a comprehensive understanding of the history and future development of computers. Limited by space, this paper can only grasp the key nodes of computer development and make a summary.
At first, people predicted that computers might have some human intelligence. In fact, this topic is no longer a scientific fantasy, but a very serious application of science and technology. But here we need to trace back to the history at that time: Turkel, a sociology professor at MIT, is an expert in computer psychology. He has written two groundbreaking books on computer psychology, one is Second Self: Computer and Human Spirit, and the other is Life on Computer Screen: Characteristics of Internet Age. Turkel began to study the relationship between man and computer in the late 1970s. She said: "The characteristics of computers are between (/bylw/) objects and non-objects." Obviously, computers are objects, but on the other hand, computers can give feedback, behave, be rational and even have spirit. People find that there is an interactive relationship between themselves and computers, and even feel that computers seem to be alive.
Professor Turkel is particularly interested in the relationship between children, computers and electronic toys. She found that teenagers mainly use computers to explore cognitive problems, while children aged eight to twelve, that is, before puberty, mainly try to master machines and electronic toys. Turkel found that computer toys can stimulate children aged five to eight to think purely rationally. She said that these computer toys made us think about such questions as "what is life".
It is undoubtedly the most important issue to discuss the difference between computers and human beings. There may be computers as smart as humans in the future, but humans still have to cook, start families and open restaurants. Humans may be the only creatures on earth who can go to church. In other words, the space left by computers is emotion, sensibility and family life. Simulated thinking may be a kind of thinking to some extent, but the simulated feeling can never be regarded as a real feeling.
Microsoft's Windows operating system is the focus of Turkel's current research. Windows allows users to perform several unrelated tasks at the same time and switch between them at will. This is obviously an innovation, because Microsoft Windows allows users to issue several instructions at the same time on the computer, which has some characteristics of human psychological activities.
In the 1980s, human beings may try to understand computers by comparing with their own psychology. Today, Turkel said that human beings are trying to better understand human thinking through the operation mode of computers. Turkel believes that the hottest topic in computer psychology research now is to assume that computers will really have emotions in the end-your computer will love you, and it needs your care and emotional nourishment-which may be the latest trend in the field of human-machine interaction in the future.
At present, mankind has made some breakthroughs in the field of computer-controlled intelligent toys. Some toys can say hundreds of sentences, and have learning function, and even swear. IBO, an electronic pet dog produced by Sony Corporation of Japan, is a representative product of this kind of electronic pet toys. In addition to toys, it is not surprising that computers can understand the master's speech in intelligent computers. At present, the Media Research Office of MIT has developed a computer with artificial intelligence, which can respond to the nonverbal signals sent by users and make some adjustments accordingly.
Turkel believes that the development trend of computers in the future is biological computers, and computers are more and more intelligent and perceptual. From the sociological point of view, this will be a great leap, which is worth discussing by scholars and experts.
At present, the computer takes nanosecond (one billionth of a second) as the calculation unit, and its speed greatly exceeds that of the human brain, which is equivalent to more than one million times the computing power of the human brain. However, computers still lag far behind the diversity of human brain's information processing ability.
Why is the "intelligence" of computers different from that of human beings? One of the reasons is that their information processing modes are different. The basis of computer information processing is the logical operation of concepts embodied by symbols, while the information processing of human brain is based on the nonlinear and parallel complex ability of graphics. It can also be said that the computer only uses logical thinking, while the human brain uses not only logical thinking, but also image thinking. Obviously, the human brain is more reasonable, accurate and scientific than the computer, so it is more efficient and faster.
Some people try to imitate the human brain model to make computers with unique human functions. ATR Institute of Human Information and Communication in Japan is currently developing a computer that imitates the human brain as a whole. Because the mechanism of human brain has not been fully understood, there is more than one kind of research in the field of "brain computer".
The neural circuit of the human brain is not perfect from the beginning, but is composed of nerve cells in the process of growth, thus forming a neural circuit. As a hardware structure, it is a "self-multiplying artificial computer based on hardware evolution". This system called CAM brain will contain billions to tens of billions of nerve cells, and the goal is that these nerve cells can run completely in parallel.
Some scientists focus on using computers to realize some functions of the human brain. The human brain is characterized by three-dimensional structure with overlapping cell layers and high parallel processing. Based on this understanding, Tohoku University in Japan has developed a laminated artificial retina chip, which is expected to produce a system with similar human visual information processing function. The Japanese Institute of Physical Chemistry recently began to explore the development of brain computers by developing advanced small robots. According to the processing circuit of the human brain, the institute allows different small robots to simulate the human brain to study the problems of brain cognition, learning and control.
At present, people mainly develop computers that are as self-disciplined and creative as the human brain and can perform highly intelligent operations in three ways. The first is the research of artificial intelligence; The second is to make a brain computer based on artificial nerve cells, also called neural computer, based on the structure of the human brain; The third method is to develop electronic circuits that can work like neural networks and automatically generate "artificial brains".
The research scope of brain computer is very extensive, but most of today's work is still in the basic stage. Because it is not easy to understand the mechanism of the human brain. Experts believe that in order to understand the extremely complex functions of the human brain, it is necessary to carry out interdisciplinary and multi-faceted research, synthesize and sort out, so as to obtain comprehensive information. For example, by understanding the physiological function of the brain at work, we can get detailed research results in the stage of nerve cell research, but it is difficult to capture the activities of the human brain at the macro level. In addition, important topics such as the relationship between the human brain and the whole body are also very important. If you can't exert your comprehensive ability, it is difficult to understand the working principle of the brain.
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