In view of the contradiction between the hardware conditions of the programmable controller training room and the relatively backward training assessment methods, a method of training assessment based on lottery software is proposed. Through students’feedback, the new practice assessment method has improved the credibility of the training results, improved the information level of the practice assessment, reduced the artificial factors of the practice assessment, and has been praised by students. Programmable controller is the product of the organic combination of computer technology and relay control technology. It is widely used in the automatic control of industrial production process. It has high reliability and stability, strong processing capacity, and provides almost perfect automatic control device for industrial production. Programmable Controller is the main course of automation, electrical engineering and its automation, measurement and control, traffic engineering, mechanical engineering and automation specialty. It is a course that integrates all kinds of automation technology and engineering practice. It is also an important course with strong practicality, wide application and easy to increase students’ability. Cheng. Learning this course well will provide strong help for students to develop and maintain production process automation equipment, and lay a good foundation for students to study.
The teaching goal of the course is to enable students to master the structure, working principle, basic instructions, functional instructions, program design ideas and system wiring methods of the programmable controller. Master the concrete application of modern programmable controller control technology in engineering practice, lay a foundation for students to engage in engineering technology work and follow-up courses.
Because of the importance of programmable control course, most engineering colleges offer this course. In addition, it has the characteristics of combining theory with practice, thermostatic element in which the curriculum of practical training plays a decisive role in its curriculum system. School assessment is the corresponding evaluation of students’learning situation. In colleges and universities, no matter how difficult it is, teachers must evaluate students according to certain rules. Among them, the evaluation system of theoretical courses is relatively perfect. In the long-term teaching practice, teachers accumulate rich experience in the examination of theoretical links.
Generally speaking, the assessment of theoretical courses is divided into the following four steps: firstly, after the completion of theoretical courses, teachers will produce the test papers according to the content of the curriculum assessment proposition plan; secondly, after the completion of the test papers, they will be submitted to the director of the teaching and research department, the director of the department, and the deputy dean of the teaching department in charge of the Department for examination; secondly, the department. After the examination and approval of the column, the paper can be printed by the logistic department of the school. Finally, the teacher arranges the examination according to the time of himself and the students, corrects the test paper, and makes the corresponding analysis of the test paper. So far, the whole theoretical examination has been completed. This set of assessment system is relatively perfect, basically eliminating the subjectivity of the evaluation system. And the exam of the training link is totally different. Due to the long-term implementation of the policy of attaching importance to hardware rather than software and theory rather than practice in the personnel training mode of higher education institutions, the assessment of practical training links has not been given due attention for a long time, and it often becomes the blind spot of research. In addition, in almost all the training links of the assessment process, there are different degrees of subjectivity, marking at will, marking to see the mood of teachers. These problems have led to the low credibility of the performance in the practical training, affected the teachers’scientific evaluation of students, to a certain extent, frustrated the students’ enthusiasm for learning, and caused some adverse effects, which need to be solved urgently. Traditional programmable controller training and assessment methods. Traditionally, the assessment methods of the practical training of programmable controller are mainly divided into the following parts: (1) Teachers give the practical examination questions well before the end of the training course, and print them into small notes. Because of the particularity of the training process, teachers usually give about five examination questions with similar difficulty for students to choose by drawing lots. (2) According to the number of students to be assessed, the capacity of the training room, the time of each student’s assessment, and the corresponding training equipment and tools, as well as the purchase of corresponding consumables. (3) According to the time of their training assessment, the students take the training instruction book to participate in the assessment. (4) Teachers assess students’performance according to their assessment, determine the number of failed candidates, and notify them of the time for making-up examinations. (5) The students taking the make-up examination take the make-up examination according to their own time.
The drawbacks of the traditional training and assessment methods of programmable controller. There is no doubt that the traditional assessment method has its reasonable side. After all, it is the summary of the work experience of countless teachers in the training room and the painstaking efforts of the teachers. However, with the development of society, especially with the continuous emergence of information technology, the drawbacks of its assessment methods have gradually emerged, as follows: (1) After the end of the training assessment, students arbitrarily discard the paper on the topic of lottery printing, resulting in a certain degree of environmental pollution, and caused considerable harm to the laboratory teachers’cleaning of the training room hygiene. Difficulties. (2) Students take training guides to participate in the assessment, lacking the tense atmosphere of the examination. Teachers and students feel that it is not standardized, especially the inspectors of the educational administration have great opinions on the assessment of the training.
(3) There are no scoring standards and scoring rules in the practical training examination. The evaluation of the results is subjective and greatly influenced by teachers’emotions. Because the standards are not uniform, some students with poor assessment are more emotional and even tend to confront teachers, which deepens the contradiction between teachers and students. (4) The examination results are not archived, and some of the failed students complain to the school, forcing many teachers to let all the students who participated in the practical training assessment pass, which loses the credibility of the practical training assessment. Establish the test question bank of the practical training of the programmable controller. In view of the students’questioning about the credibility of the training assessment, a question bank for the practical training assessment of programmable logic controller (PLC) was established. The question bank is composed of ten practical examination papers. Each test paper has not only the corresponding questions, but also the assessment criteria for each item, so that students can be scored easily. When assessing, students draw out their own examination questions by drawing lots to participate in the assessment. Teachers scored on the spot according to the scoring rules, and announced the students’scores in response to students’ queries. Use lottery software instead of paper lottery. In order to solve the problem that students draw lots too slowly and cause environmental pollution in the training room, a software called lottery assistant is adopted (the current version number is 2.8). Students can draw lots only by clicking on the lottery software, and the speed of lottery can be adjusted. This greatly improves the efficiency of lottery. Through the use of many students, they feel the atmosphere of information assessment, and increase their interest and attention to the learning of training courses. Print examination papers in real time. In view of the problem that teachers and students reflect that the assessment is not standardized, the way of printing test papers immediately after students draw lots is adopted, which requires the training room to prepare a printer with a computer. After the students draw lots, the teacher prints the test papers with grading criteria in real time according to the number of the students draw lots. The students take the test papers for the examination, so that the students really feel the standardization of the examination in the training room. After the examination, the students were graded on the spot and informed that the examination papers were filed in the training center for reference, thus eliminating the dark box operation of the examination results.
The credibility of assessment has been improved.
Because of the clear scoring rules, the quantification of the examination has been improved, the number of Students Questioning the examination results has been greatly reduced, and the crisis of students’trust in teachers has also been greatly alleviated. Examination criteria. Because students take exams, it creates a tense atmosphere for students. To some extent, this atmosphere is conducive for students to exert their highest level. Students generally reflect that taking exam papers is better than taking practical training instructions to participate in the exam to exert their actual level. Environmental changes in the training room. After each previous examination, the whole training room is a small note on the drawing of lots, which seriously pollutes the environment of the training room, and brings bad effects to the teachers and students who do the training in the latter group. By using lottery software, students generally reflect that the degree of assessment informatization has been improved, the distance between teachers and students has been shortened, and the harmony between teachers and students has been enhanced. In summary, the new programmable controller training assessment method reduces the pollution of the training room environment, reduces the students’questioning of the assessment results, increases the students’ enthusiasm for training and learning, and students’feedback is good. At the same time, people’s pursuit of the fairness and rationality of the practical evaluation of programmable controller is endless. We hope that more teachers will join in the exploration and research.