基于USB接口和I^2S总线的控制系统设计

Design of Control System Based on USB and I^2S Bus

指出便携式是数字化仪器的发展方向之一,介绍了一种便携式控制系统的设计实例。给出了一种基于USB接口和I2S总线的控制系统的结构并予以实现,主要介绍了控制系统的数据采集部分。数据采集部分采用AD7862芯片,具有高速的数据采集能力,可编程逻辑CPID的采用,使得系统具有较强的可扩展性。其设计思想不仅可以用在A/D变换上,同时也可以用在D/A、数字I/O等控制场合。

Portable instrument is one of the development trends of digital instrumentation. An example of portable control system is introduced. A frame of control system based on USB interface and I2 S bus is given and the data acquisition part of the control system is introduced. The using of high-speed data acquisition chip AD7862 and complex programmable logic device (CPLD)make the system adjustable. This method may be good for the D/A,DI/DO applications.