Development of Chemical Instrumentation and Automation Flash Courseware and Network Answering System

1 Development of FLASH courseware for chemical instrumentation and automation FLASH is Macromedia's multimedia software development tool. Its features are: Software design has strong flexibility, animation and sense of interaction and interactivity. Some abstract and incomprehensible contents in the course of chemical instrumentation and automation are designed in an animated form with FLASH, which will make the understanding of students easier and more visible, and can effectively improve the teaching effect.

1 chemical meter and automation animation. Click on courseware hyperlinks online and the download progress screen will appear. After the download is complete, select the animation content that you want to learn or demonstrate. Now take the typical pressure measurement in the electrical contact signal pressure gauge as an example. After selecting this content, the operation interface shown in the figure appears. Click the "Overview" button on the interface to understand the basic content of this type of pressure gauge. "Presentation" button animation shows the principle of action and application of pressure gauges.

Since the pressure gauge (magnetic type) is not described in detail in the textbook, only from the three pointers on the dial, it is easy to use the wrong wiring and cause the alarm of the pressure gauge. In response to this situation, we have specially designed a miswiring animation effect (). Click on the function in this interface.

Electric contact signal pressure gauge In order to allow students to understand the correct wiring method, students can click on the "correct wiring" button on the interface shown, and the operation interface shown in the figure appears. Click on the "Play" button and you can see the details of the "closed" and "disconnected" conditions of the alarm line as the pressure changes.

Click "stop" button, the demonstration can be stopped at any pressure state, polar computer 1 * right to use the chemical transformation of the earth to facilitate the teacher's analysis and student thinking. With two operating interfaces can be switched at any time.

Electric contact signal pressure gauges correctly wiring some of the abstract concepts in the textbook, such as differential pressure level measurement, it seems more boring. However, using the flash animation to embody the whole process of “migration” can describe this concept visually and accurately. All these make up for the lack of teaching materials and traditional teaching models. The courseware currently includes chapters on pressure measurement, flow measurement, temperature measurement, moving circle meters, pneumatic actuators, etc., and can be added or deleted as appropriate according to changes in teaching requirements.

2 Network Question Answering System One of the advantages of developing a Q&A network is that questions and answers to questions are not limited by time and space, and it is not necessary to answer the same questions repeatedly, and teaching efficiency can be improved. This system adopts the dynamic web page technology development based on S (Internet Information Server). Its feature is that ASP language is completely embedded in HTML; directly executing program code; accessing database easily; programming efficiency is high.

The developed network answering system uses objects divided into two categories: students and teachers. Students can use the courseware integrated in the system to study, and they can also ask, exchange, and ask questions. The design flow for this module is as shown. A more critical step in system development is the establishment of a well-structured database. According to the use of the system, the database has created 5 tables, including User (student information table), TeacherorAdmin (teacher data table), Question (question table), CwName (Courseware table), Con£ig (system parameter table), including Answer all the parameters to be used during system design. Ability to pair S-ID (student ID), Usemame (student ID), S-Password (student password), S-IP (student login IP), T-ID (teacher ID), T-name (teacher username) , T-Password (teacher password), ID (question number), Question (question content), Answer (answer content) dozens of fields to locate. Between the table and the table also established a reasonable and close connection. , Student Module Design Flowchart Teacher Module Design Flowchart The question raised by the student and the teacher's answer are stored in the database so that the student can refer to it at any time. In the teacher module, the teacher's dual responsibility is designed: it is both the answerer and the doubter, but also the administrator of the system. On the one hand, the teacher answers the questions to the students; on the other hand, the system settings can be directly modified online: if the administrator password is changed, the student information is viewed and modified, and the courseware is added and modified according to the teaching requirements. The teacher module design process is as shown.

4 Conclusion The use of FLASH production of chemical instrumentation and automated animation courseware and ASP developed using the network answering system can better meet the curriculum's supporting teaching requirements, to improve the teaching effectiveness of the course has a positive effect.

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