In the preview of the strain gauge resistance sensor section, a classmate found out on the Internet that carbon materials are used to make resistance sensors that can be strained at multiple points. He also found out its uses and talked about his idea of using this material in Among robots, is it possible to make a robot with human skin? This idea was discussed heatedly during the "35+10" interactive time of this class, which strongly stimulated students' passion for learning this course. The teaching methods of “35+10” are analyzed below.
2. Reforms in courseware production
The course team systematically produced courseware for the course "Sensor Applications and Technology". The courseware produced has two outstanding points. One is to make up for the lack of sensor types in the laboratory. Industrial sensors are expensive and the laboratory does not need to spend too much money to purchase them. , the course team teachers and company technicians went to the company to give the appearance, parameters, and usage precautions of industrial sensors in PPT form, cultivating students' engineering awareness. Second, the practical application of sensor detection and control of each module was animated. The formal expression, simulates the factory, moves the factory into the classroom, and realizes the integration of theory and practice.
For example: The temperature measurement of industrial platinum thermal resistors is widely used in industrial measurement, but the price is thousands, and the laboratory has not purchased it. The course team and corporate technical staff will compare the shape, parameters, actual temperature measurement examples of platinum thermal resistors, as well as wiring and transformers. Systematic courseware has been produced in terms of gas transmission and control; another example is one of the applications of photoelectric sensors: measuring the speed of the gear that drives the meter needle to correct the scale accuracy of the gas meter. The technical staff of the course team member Yu Dongfa Company in Dandong discussed the above-mentioned requirements of Dongfa Company The detection device produced a speed measurement animation of the photoelectric sensor, as well as the shape and parameters of the photoelectric sensor, as well as courseware for the actual installation position of the gas meter.
The course team made this course online and won the honor of being awarded the 2009 Excellent College-Level Quality Course and the Second Prize of the Liaoning Province Online Course Award in 2010. Achieve resource sharing with teachers and students of our college.
Reforms in Experimental Teaching
In previous experiments, teachers provided experimental equipment, experimental circuits, experimental steps, and even experimental results. They did not actively and effectively mobilize students' initiative awareness and skill development. Students were in this "indoctrination" position. The teaching method still makes students feel bored with learning. Now the teacher issues experimental task sheets, and students preview the experiment, obtain relevant information for this experiment, and determine the experimental plan. After being guided by the teacher, students work in groups and teams to perform experimental operations. Group members evaluate each other among the group members and fill in the experimental test sheet as the basis for experimental results. The reform of the experimental part must be based on the opening of the laboratory. Our hospital is equipped with specialized laboratory management teachers, which are open every day from 1:30 to 4:00 pm. For example: "Use of differential transformer sensor" experimental task list.
Through the reform and practice of the course group in the past two years, compared with the original teaching methods, the teaching reform of the "Sensor Application and Technology" course has achieved significant teaching effects. Students are studying the course and participating in related electronic product production, Both the development of robots and the skills competition are of great interest. Students' mastery of the skills in this course has been significantly improved, and it also provides a reference for the reform of other courses.
