141-170. [Textbook Analysis] Electronic Technology Foundation and Skills is a core course of electrical specialty in secondary vocational schools. It takes the completion of electronic process as the main line, integrates the basic knowledge and skills training of electronic technology into various training tasks, and the assembly and debugging of multi-functional controllers as one of the basic items of this book is a student. The basic content of compulsory courses and the level of skills to be achieved. [Learning Situation Analysis] The object of instruction is the second-year students majoring in electronic technology application. Through the study of basic engineering and electronic technology courses, we can identify, measure and judge the functions of electronic components, understand the composition and function of simple circuits, use the public platform of Wechat to explore and cooperate with others, and have a certain project implementation ability. [Design Idea] The electronic products used in the course are all integrated boards, which are characterized by dull circuit drawings and difficult to understand. Although the teacher can make sense, the students reflect that it is very difficult to imagine these processes. In order to visualize the abstract theory, Flash dynamic circuit diagram teaching is adopted. In the physical assembly, the function of the circuit board made by the students is not complete, and the success rate is low.
It is impossible for the students to improve their skills by making circuit boards many times. In order to reduce the occurrence of false loading and missing loading and the cost of practice and training, 3D virtual simulation software was used to assist teaching. Knowledge Objectives: Can tell the working principle of multi-function controller, and can elaborate on the structure of multi-function controller. Skill objectives: to read circuit schematic diagram; to install and debug multi-functional controller correctly; to repair simple faults of multi-functional controller. Literacy objectives: to cultivate awareness of environmental protection and energy conservation and professional norms; to improve team awareness; and gradually develop product awareness. Installation, debugging and maintenance of multi-function controller.
Troubleshooting of Multifunctional Controller. [Teaching preparation] Multimedia courseware, electronic task book, two-dimensional animation, 3D simulation teaching software. [Teaching process] The whole project is taught by integrating theory with practice, including task introduction, task analysis, task implementation, task detection, task evaluation and assignment. School Lightning Maintenance Center recruits new students and selects excellent technicians from the class to practice.
Teachers use single-function controller to lead to the topic of multi-function controller. Design intent: From easy to difficult, make the task more vivid and clear. Demonstrate the circuit block diagram of Flash, explain the structure of multi-functional controller, demonstrate the flow chart of circuit signal, explain the principle of multi-functional controller. Designing Intention: Flash animation through the touch screen operation circuit of Sivo integrated computer, highlights the key points, is intuitive and clear, and is more acceptable to students. Watching drawings through IPAD synchronous networking can solve the problem that students can not see the demonstration from a long distance because of many drawings components, and improve learning efficiency.
The fault points are set by the SIVO integrated computer. The fault ranges are in power module, acoustooptic control module, touch control module, magnetron control module, delay control module, light module and audio module. Teachers describe faults and guide students to discuss the possible phenomena caused by default faults. Designing Intention: Through the analysis of drawings theory, students can understand circuit principles, prepare for subsequent physical troubleshooting, break through the teaching difficulties; through the integrated machine of Shivo set fault points directly on the circuit drawings, intuitive teaching, thermostatic element students are easier to understand.
Students practice repeatedly on IPAD using 3D simulation installation software. Teachers show the situation of each group synchronously. They need to master the technical requirements and operation specifications of circuit installation. Designing Intention: In line with the concept of green environmental protection, simulation operation leads the actual assembly and reduces physical loss; IPAD simulation exercises can not only test students’preview situation before class, but also improve students’ confidence in physical installation. Develop skills competition. According to the process card, the physical assembly and adjustment of the multi-functional controller can be completed correctly and quickly within the specified time.
The process includes component counting, circuit installation and circuit debugging. Designing Intention: Through the installation and debugging process of Shivo Integrative Machine and Mobile Projection Live Broadcast, teachers can not only monitor real-time, standardize students’practical operation, but also enable students to understand each other’s installation situation and form a competitive atmosphere. Scoring within the group, selecting the best circuit board, taking photos and uploading, conducting circuit welding process competition; voting on the installation process requirements of other groups. Design intent: IPAD network transmission photos to improve classroom efficiency; Sivo integrated computer screen display multiple circuits, process matching, clearly and intuitively pointed out the advantages and disadvantages of circuit board assembly. The circuit boards provided by each group are debugged on site and checked for function. Baffle. Designing Intention: Student achievement demonstration is a demonstration of students’elegance and a concrete manifestation of skills achieved through the integration of Shivo and mobile projection live broadcast. The labeled fault board serves as a connecting link between the preceding and the following as the goal of circuit maintenance in the next lesson. Questions are raised on the gains and losses of this course, the rationality of the division of labor and cooperation arrangement of the group members, the problems in circuit learning are summarized, and the excellent group is commended. Design Intention: Through evaluation, students can summarize knowledge and skills, reflect on the shortcomings in the implementation of the task, learn experience and lessons, so as to have gains and improvements; through evaluation, timely feedback to teachers, also conducive to teachers’teaching reflection; through the selection of winning teams to motivate advanced and spur the backward. After class, the electronic task book is pushed through the Wechat public platform. The students watch the micro-course of circuit maintenance and complete the fault repair analysis table. Design Intention: By watching videos, consulting materials, arousing problem awareness, cultivating the ability to obtain information, promoting the formation of good habits of active learning, diligent thinking and courageous exploration.