本文介紹了一種基于USB總線的數(shù)據(jù)采集系統(tǒng)的設計方案和開發(fā)方法。該系統(tǒng)由Philips公司的PDIUSBD12芯片及89C58微控制器等組成。文中，介紹了PDIUSBD12 芯片的性能和特點及與MCU的接口電路，闡述了程序的總體設計思想及其層次結(jié)構(gòu)，并給出了主程序流程圖。使用USB總線傳輸數(shù)據(jù)，為數(shù)據(jù)采集系統(tǒng)與計算機之間的通訊開辟了新的道路。
關鍵詞: 通用串行總線; PDIUSBD12; 微控制器; 數(shù)據(jù)采集
Abstract :The design scheme and developing method of a suit of data acquisition system which is based on USB bus used with Philips’ PDIUSBD12 and MCU of 89C58 are expatiated. In the paper, the performance of PDIUSBD12 and the interface circuit to MCU are
described ,then shows the idea of program design and hierarchy, the flow chart of main processing program is also given. Using USB bus to transfer data blazed a way in communication between data acquisition system and computer.
Keywords: USB; PDIUSBD12; MCU ; data acquisition