Analysis And Research Of Data-Collection System Based On Teaching Testing

With the development of data collection technology and embedded system,the request to data acquisition is getting higher and higher in the field of industrial measurement and control. This paper combine with these two technologies to realize data acquisition system with miniaturization, high-capacity, high real-time, high stability and friendly interface. The application background of this paper is automatic detection experimental teaching system in high institution. Select embedded platform and realize the data acquisition system design. As experimental teaching of auxiliary equipmentThis paper firstly introduces the embedded system, embedded processor and operating system knowledge,then introduces the data collection technology . The temperature,weight, speed, illumination,infrared,gas concentrations,distance etc single in the electronic experiment as collect object. Designed data acquisition system based on ARM processor and embedded operating system WinCE. The hardware platform chooses S3C2440A microprocessors. Hardware platform also has rich interface facilitate expansion development: Camera Interface, LCD Interface, USB interface and touch-screen interface etc. Based on the hardware,describes the features and architecture of Windows CE operating system and the construction and configuration of WinCE in software. Add the ADC stream interface driver,GPIO stream interface driver etc to the Windows CE image use Platform Builder,provide conditions for the data acquisition. According to the experiment content build applications using Visual Studio 2005. Through the interface function of drives to read data and realize the data collection function.During the development process,using cross compiler method test the ADC driver and the acquisition software. Realize the real-time acquisition and processing with variables.