A Portable USB Data Acquisition System

摘要

In order to realize high-speed and real-time collection of data and facilitate data analysis and processing, a USB data acquisition system with acquisition, display and storage function was designed in this paper. The hardware of the system consists mainly of AT89S51 as the local processor and PDIUSBD12 as the USB interface device, and the underlying data communication is operated by the firmware and drivers. The application program is developed with LabVIEW under Windows platform. The experimental result shows that the system can work stably and effectively. The USB data acquisition system is easy to operate and portable. In many situations, the system will be a powerful tool for data acquisition and analysis.