| Leaded by the innovation of science and technology, increased demands are proposed to the practice of vocational student ability to a higher level, which, in turn, brings out challenges within the instruction of fundamental professional courses relatively fixed. Based on the existing experiment conditions and tight budget, it is a crucial and extensively studied topic of applying an adapted method to the overall teaching when it comes to the curriculum issues on student interests and skill training.Combining with the practical requirements of our institute in the side of sensor and detection technology field, this dissertation focuses on design of a teaching platform. The teaching platform is based on the Lab VIEW platform for virtual machines and the embedded processing system for the hardware platform. It is mainly used to detect the output voltage, frequency of the sensor instruments.The first chapter introduces the theoretical basis for design-related content according to the characteristics of higher vocational education, combining with the teaching requirements of detection technology and virtual experiments to study the purpose of this article with an overview of the significance, of virtual experiments.Chapter II designs the experimental teaching platform for analysis. First of all, a clear platform for the experiment is built up, only aiming to the signal voltage and frequency of signal detection experimental teaching platform, according to the specific requirements of the system. A brief analysis of the relationship between them and the various modules in the layout of the experimental platform is added. A USB communication modules is finally chosen as the system interface and F2812 processing chip is as the microprocessor after analyzing and comparing with the communication ports and embedded micro- processing chip features of the existing general-purpose computers .According to the teaching platform for the specific requirements of each module, the third chapter focuses on the voltage source modules, the frequency source modules and the detection circuit design, each one accompanied by the circuit schematic diagram of hardware. Chapter IV on the basis of experimental teaching platform for signal processing requirements for the LabVIEW software platform, the software part of the system has been designed. Finally, system software design principle of the various modules that meet the requirements for a graphical interface.Finally, based on a specific experimental example, the analysis of the experimental platform of the application and effectiveness of the experimental results are presented. |
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