Ⅰ. General Information
Ⅱ.Curriculum Nature / character and Course Objectives
Curriculum Nature
The practical course of "measurement and control training" takes into consideration both the "process" and the "control". It realizes the professional features of the professional one machine and two wings, and trains students to become engineering application talents in the petrochemical industry.
Course Objectives
Through the study of the practical teaching curriculum, consolidate theoretical knowledge and promote the connection of theory with practice; master scientific methods and cultivate innovative consciousness; improve hands-on ability and engineering practice ability.
The practice of measurement and control training is closely combined with the new development and new trends of equipment in the current engineering field. With PLC as the basic controller, students are required to complete the system design of “control-automatic control-closed loop automatic control” from PC to mechanical industrial equipment.
The experimental teaching process focuses on the initiative and creativity of students, and strives to “do secondary school” and “project-based education and learning”.
The specific teaching objectives are as follows:
G1: Make students understand the basic concepts of process equipment control, and understand and master the main process parameters involved in process equipment, namely temperature, pressure, flow and other control methods. Through the hands-on operation of the students, the professional knowledge of process equipment and equipment control in the classroom can be integrated into practice, and the design capability of the preliminary process equipment control system is available.
G2: Understand and master the working principle and programming method of the basic control system with PLC as the controller.
G3: Through the design and programming of the host computer and PLC, the PLC can realize the real-time control of common control objects (such as heating, servo motor, frequency conversion water pump), and master the basic programming method of PC monitoring software.
G4: This course develops students' awareness of safety and teamwork.
The final design is completed through group collaboration, and the students' teamwork ability is cultivated while improving students' hands-on practical ability.
Ⅲ. The Corresponding Relationship between Course Objectives and Graduation Requirements
Table 1 The corresponding and supporting relationship between course objectives and the requirement index points for graduation
Index point | Course objectives | Method | Evaluation basis | Degree of support (H, M, L) | |
3 Design/develop Scheme to Solution | According to the strength and sealing failure modes of the process equipment, have capabilities to propose design criteria, methods and technologies, and know all factors influencing the design objectives and technical schemes in different design stage. | G1 | Practice with the control box under the guidance of the teacher | M | |
6 Engineer and Society | Be able to evaluate the effects of the practice and solutions of the complicate engineering problems in the major of the process equipment and control engineering on the society, health, safety, law and culture based on the analysis of relevant engineering background knowledge, and understand responsibilities to be taken. | G2 | Opertation and Report, group exam | M | |
9 Individual and Team | Have team consciousness and cooperation aspiration, and be able to take roles as individual or team member under multi-disciplines background. | G3 | Process exam | L | |
11 Project Organization | Understand and master engineering management principles and economic decision methods, and apply them in practical activities of the process equipment and control engineering under multi-discipline environments. | G4 | L |
Ⅳ. Teaching Contents and Requirements for the Lecturing Part (8 hours)
4.1 Teaching objectives（G1, G2, G3, G4）
Enable students to understand the basic concepts of process equipment control, master the basic principles and methods of programmable controllers. Students can confirm the input/output variables of the control process according to the basic sequence control logic, have the ability to express process equipment control problems, and be able to understand the control logic diagram.
Understand and master the engineering management principles of the process equipment process and the methods to achieve energy saving and high efficiency, and be able to match practical activities.
Cultivate professional awareness, strengthen engineering ethics education for students, cultivate students' great craftsmanship spirit of excellence, and stimulate students' home country feelings and mission to serve the country through science and technology. Guide students to understand the situation of the world, the country, the party, and the people, and strengthen their political, ideological, and emotional identification with the party’s innovative theories.
Guide students to deeply understand and consciously practice the professional spirit and professional norms of various industries.
4.2 Teaching content
(1) Overview of process equipment control system.
(2) Learning ladder diagram language and typical control programming, PLC sequential logic control, input and output unit.
(3) Realize energy saving and high efficiency through process control methods.
4.3 Teaching requirements
Master the characteristics of the controlled object, distinguish the type of control object, write basic logic control; cultivate students' basic control concepts and programming skills.
Ⅴ.Teaching Contents and Requirements for the Practical Part（16 hours）
5.1 Teaching objectives（G1，G2, G3, G4）
Master the main process parameters involved in process equipment: PLC-based measurement and control, through this practical teaching, master PID-based temperature measurement and control technology, servo motor control (choose one), host computer and PLC program design, and master the use of instruments. The basic capabilities of PID control. With PLC as the basic controller, students are required to complete the system design of "control-automatic control-closed loop automatic control" from PC to mechanical industrial equipment.
5.2 Teaching content
（1）Communication experiment between PLC and host computer: using non-protocol communication
1）Read the RXD and TXD instructions in the PLC manual for hardware setup and programming
2）Combine serial port debugging software to complete sending and receiving software settings
3）The upper computer software is written, and the MScomm control is used to realize the sending and receiving commands of the PLC and the host computer program to specify a certain condition.
（2）With PLC and E5EC to control temperature, and reads and performs temperature setting
1）Read the E5EC communication manual, master the E5EC PID method for temperature control, and be able to adjust the internal PID parameters of the E5EC.；
2）Complete PLC and E5EC communication, read and temperature settings.
（3）PC uses 232 serial port to read and set E5EC temperature
1）Read the E5EC communication manual and use the computer serial port + 485 adapter to communicate directly with the E5EC. Use the serial debugging software to achieve reading and temperature setting；
2）Program in PC toget and control the temperature.
（4）PLC control servo motor action: can complete switch, forward and reverse and speed control
1）Read the servo motor manual and follow the circuit diagram for the "pulse + direction" mode line connection;
2）Read the contents of the high-speed pulse output part of the PLC manual, and program the PLC output pulse command according to its description, using the high-speed pulse output port. The SPED and PULS are used to set the pulse frequency and the number of pulses, and the INI is used to set the output pulse stop.
（5）PLC uses a rotary encoder to measure the pulley speed
1）Read the rotary encoder instructions to understand how it works;
2）Read the contents of the high-speed counter in the PLC manual, and follow the instructions for the encoder input pulse acquisition. The PLC setup and programming must be completed and converted into the final required data.
（6）quiz
5.3 Teaching requirements
Through the programming design of the host computer and PLC, understand and master the basic control system working principle and programming method with PLC as the controller, and can apply PLC to realize the real-time control of common control objects (such as heating, servo motor, variable frequency water pump). The basic programming method of PC monitoring software.
Ⅵ. Evaluation Standards
6.1 Assessment method and content
The teaching link of this course is experimental teaching, which includes three stages of phased assessment. The assessment method includes comprehensive assessment of the two parts of the process assessment and the experimental report. The process assessment is classroom performance (including attendance and participation) and operational performance. The specific division of labor is shown in Table 2-3.
Table 2 Course assessment methods and main contents with the proportion
Table 3 course assessment, content and its supporting relationship to objective
Score | Evaluation method | The proportion of assessment methods | Main assessment contents | |
G1 | 50 | 10% | ||
Operation | 60% | Perform phase test of module, module assessment and group reply | ||
Report | 30% | The content includes: the experimental purpose of the corresponding module, the experimental content, the experimental steps, the experimental result processing, the application prospect, and the like. | ||
G2 | 20 | Class participation | 10% | Attendance, questioning, answering questions, etc. |
Operation | 60% | Perform phase test of module, module assessment and group reply | ||
Report | 30% | The content includes: the experimental purpose of the corresponding module, the experimental content, the experimental steps, the experimental result processing, the application prospect, and the like. | ||
G3 | 15 | Class participation | 10% | Attendance, questioning, answering questions, etc. |
Operation | 60% | Perform phase test of module, module assessment and group reply | ||
Report | 30% | The content includes: the experimental purpose of the corresponding module, the experimental content, the experimental steps, the experimental result processing, the application prospect, and the like. | ||
G4 | 15 | Class participation | 10% | Attendance, questioning, answering questions, etc. |
Operation | 60% | Perform phase test of module, module assessment and group reply | ||
Report | 30% | The content includes: the experimental purpose of the corresponding module, the experimental content, the experimental steps, the experimental result processing, the application prospect, and the like. |
6.2 Grading
The scoring criteria for process performance (including classroom performance and experimental operations) and internship reports are shown in Tables 4-6.
Table 4 Grading criteria for classroom participation
Assessment index | Weights | 100-90 | 89-80 | 79-70 | 69-60 | 59-0 |
Attendance | 0.10 | On time | Late less than 5min | Late for 5-15min | Absent>3 times | |
Answer question | 0.05 | Actively participate | Very low participation | Absent | ||
Question | 0.05 | Effectively question more than 5 times | Effectively ask questions 3-4 times | Effectively ask questions 1 times | No question |
Table 5 Grading criteria for Operational performance
Weights | 100-90 | 89-80 | 79-70 | 69-60 | 59-0 | |
Program | 0.30 | Complete PLC or PC programming independently | Complete part of PLC or PC programming | Partially complete of PLC or PC programming with assistance | ||
Practice ability | 0.10 | Actively complete software and hardware and control box operation | Partially complete software and hardware and control box operation | Partially complete software and hardware coordination with assistance | Complete of PLC or PC programming with assistance | Unable to complete the task |
Cooperation | 0.10 | Actively cooperate and lead group cooperation | Cooperate with the group | Group cooperation less | Bad | Not participating |
Table 6 Scoring criteria for experimental reports
Assessment index | Weights | 100-90 | 89-80 | 79-70 | 69-60 | 59-0 |
Content structure | 0.20 | Complete, correct and logical | Complete and correct | Basically correct | Bad | |
Writing | 0.10 | Excellent | Good | Ordinary | Bad | No report |
The total score is composed of three parts: classroom participation scores accounted for 20%, operation performance accounted for 50%, and test reports accounted for 30%.
Among them, classroom participation scores consist of attendance, answering questions and asking questions; operational performance scores consist of programming, hands-on ability, and cooperation.
The total score is scored on a hundred-point system.
Ⅶ.Textbooks and Recommended References
7.1 Textbook
[1] Dai Yiping, "Programmable Controller Technology and Application" 2nd Edition, Machinery Industry Press, Beijing, 2016;
[2] "Measurement and Control Training and Practice Textbook" self-edited
7.2 Reference Books
[1] Omron PLC programming manual
[2] Omron PLC hardware control manual
Written by Lifang Chen
Responsible by Lifang Chen
Checked by Duan Chenhong