Research and Education Reform If Xu Xian A Electronic Technology Professional Practice Environment Construction â–¡ Talk about Xiang Ping Luo Huimin (Wuxi Vocational and Technical College, Wuxi 214073, Jiangsu) Room, Electronic Technology Training Room and other practical platform construction ideas, put forward product projects as the leading Practice the operation mode.
The major of electronic technology in higher vocational education is to cultivate advanced applied technical talents with comprehensive knowledge of electronic technology and strong ability of computer application in the field of electronics in China, Germany, wisdom and physical education. Graduates of this major will be engaged in the design, assembly, commissioning, management, marketing and technical services of electronic equipment and products in the field of electronic engineering in all walks of life.
In order to achieve the goal of cultivating electronic technology majors in higher vocational education and make professional education truly effective and distinctive, it is essential to build a practical teaching platform rationally.
Higher vocational teaching of electronic technology majors should attach importance to the combination of basic theory and practice. The professional basic courses mainly include high and low frequency electronic circuits, digital circuits, and microcomputer principles. When teaching theory, teachers should not only pay attention to the analysis of principles, but also pay attention to highlighting the characteristics of various circuits, applications, and selection basis of parameters. Practical requirements, that is, to achieve the combination of principle circuits and practical circuits, to cultivate students' concept of engineering application from the beginning of professional basic courses. At the same time, in the relevant practical courses, it is necessary to highlight the verification analysis of the impact of various characteristic circuits and circuit adjustment components on the circuit, requiring students to master the debugging and measurement methods of typical circuits, including the introduction of some common engineering terms, such as the static working point of the amplifier (DC operating point), dynamic range, meaning of distortion, etc.
Since the major students will be engaged in the design, debugging, process management, maintenance and technical service of electronic products after graduation, we should highlight the setting of professional courses for posts. Professional teachers should have a certain professional and industry background, and have strong engineering practice ability, so that they can closely match the job requirements of enterprises to set up practical courses, such as electronic technology courses design, electronic technology, electronic measurement, electronic circuits Fault diagnosis, electronic circuit debugging and other related practical courses strengthen the practical engineering basic training for students, and improve their ability to solve practical problems and innovation.
Strengthening the comprehensive planning of the practical environment and the reasonable setting of the practical methods are the necessary ways to ensure the effectiveness of practical teaching. The construction of a practical teaching platform led by product projects is an effective way to closely link the cultivation of students' employment positions. A scientific, reasonable and effective practical teaching platform should include the following aspects: 1. Construction of an electronic circuit simulation, debugging and design practice environment based on information technology. The development of modern electronic technology provides a material basis for the development of computer technology. The development of technology has provided a driving force for the development of electronic technology. The computer software simulation system can provide a better teaching environment. Students can use simulation software to establish concepts for electronic circuits as soon as possible, and simulate the actual circuits and programs on the computer first. In this way, students can achieve more results with less effort when performing actual circuit experiments, debugging, troubleshooting, and simple circuit design. This improves students' ability to use their hands and improves teaching efficiency. Students of this practical platform can learn the application of software such as PROTEL for circuit design, FRANKLIN for debugging of single-chip programs, EWE for circuit measurement simulation (fault setting is also available), Max-Plusll, MATLAB, etc., which broadens students' horizons and enhances their interest in learning .
2. Construct basic and professional laboratories and create a comprehensive experimental environment for electronic circuits. The practical training of electronic circuits in all aspects is an indispensable way for students to master professional foundation and professional knowledge. Students can only develop their skills and practice professional skills if they do it practically. Thinking, improving the ability to analyze and solve problems. Therefore, it is necessary to establish a comprehensive laboratory of electronic circuits based on electronic measuring instruments and various signal sources. The choice of electronic measuring instruments can be low-frequency, high-frequency, digital and other conventional testing instruments. If financial resources allow, high-end testing equipment such as spectrum analyzers, logic analyzers, and online testers can be added; signal sources include audio signal sources, IF source FM / AM source), digital signal generator, etc. At the same time, it is necessary to provide auxiliary parts configuration such as universal board, bread board, simple circuit finished board, common components, common tools and materials, etc., to provide teachers and students with a good electronic circuit experiment environment. The laboratory can not only undertake experimental teaching of digital, analog, electronic measurement and other courses, but also undertake comprehensive training projects such as curriculum design and graduation design.
Of course, if financial resources allow, it is possible to build laboratories for electrical and electronic, digital, analog, DSP, single-chip, automatic control, testing and other laboratories with the experimental box as the carrier, but the author tends to be in the comprehensive laboratory of electronic circuits Equipped with relevant experimental circuit boards or emulators, allowing students to self-realize the structure of the circuit, and to complete the above types of experiments. This practical platform focuses on training students' product debugging ability, electronic circuit fault diagnosis ability and simple electronic product design ability.
Third, establish an electronic technology training room to create an enterprise internship environment for students to adapt to the electronic post. If the practical links of electronic technology are set up reasonably, once the student arrives at the enterprise, the role conversion from student to enterprise technical staff can be quickly achieved. When constructing an electronic process training room, it is necessary to consider setting the training environment, training content, and training equipment from the manufacturing process of the product, that is, arranging the production process of the assembly line according to the production process of product assembly, welding, debugging, and quality control. Both theoretical and practical teaching sprout on the assembly line. On the basis of manual installation and welding components, automatic solder paste printing machine, automatic placement machine, reflow soldering machine, wave soldering machine, manual plug-in assembly line, product assembly line and component molding, testing instruments, assembly Welding tools and other equipment. In the teaching content, the basic knowledge that technical workers should master is printed in detail, including printing, patching, and soldering in the SMT process, including current process hotspots (lead-free soldering), inspection technology and related tool equipment such as ICT, AOI, BGA assembly, etc.) Commissioning and use; anti-static problems under mass production; familiar with the knowledge and methods of product inspection; familiar with and writing process documents, managing technical files; participating in the work of accepting national or international certification for export of products. This practice platform allows students to fully learn and feel the production technology of modern electronics industry.
On the basis of building a practical platform of electronic technology, in order to effectively improve the effect of practical teaching, the content of practical teaching should be set reasonably: â‘ Properly reduce the proportion of principle verification experiments, only open typical and representative experiments, try to adopt and The experimental mode of the actual circuit installation and debugging is consistent; â‘¡ Improve the proportion of applied practice such as design, comprehensive experiment, course design, and practical training.
The first type of experiment can be spliced ​​in the comprehensive laboratory of electronic circuits; and the second type of applied practice should take the product project as the lead and the actual mass production of the product as the goal, to design, assemble, debug and repair the electronic products , The entire process of performance testing and process design, the entire practice process is interspersed on the above several practice platforms. The process is as follows: students perform software simulation in the computer circuit simulation laboratory. After the simulation is successful, they enter the electronic circuit comprehensive laboratory to conduct the actual circuit experiment of the unit circuit and the system. The comprehensive laboratory carries out the trial production of the prototype. After the process review and improvement, it enters the electronic technology training room for small batch installation, welding, wiring, and assembly, and then enters the electronic circuit comprehensive laboratory for unit debugging and general debugging. Through several rounds of practice, students can better cultivate their innovative consciousness and ability, improve their overall quality, and better adapt to society.
Of course, in addition to building the above-mentioned on-campus practice platform, the construction of off-campus practice bases is also an important aspect of the construction of electronic technology professional practice links. Through good cooperation with electronic companies, engineering and technical personnel of the company can be invited to give lectures on engineering knowledge, and our students can be sent to the enterprise for post training to give them an eye-opener and insight in practical work. Such cooperative enterprises may include semiconductor companies, electronic product design companies, and some manufacturers of electronic products, etc.
We can only cultivate qualified and advanced application-oriented technical talents who meet the requirements of modern electronic enterprises only by constantly broadening our thinking in the teaching practice, paying attention to the needs of the enterprise ’s job group at all times, relying on scientific and reasonable practical teaching platforms, and adopting advanced teaching methods and means .
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