基于CS5460A的高精度数据采集系统的设计

阐述了基于高精度串行A／D转换器CS5460A的数据采集系统的设计及实现方法。硬件方面，简单介绍了单片机与各芯片的接口设计及CS5460A与传感器的接口电路设计；软件方面，介绍了该系统的主程序流程图，并重点介绍了如何采用软件滤波的方法来提高系统的抗干扰能力。该系统中，单片机与上位机之间采用MODBUS协议进行通讯，并详细叙述了CRC冗余算法的实现问题。软件滤波和CRC的使用，使该系统精度得到了极大地提高，可靠性更强，适应了工程的需要。

High-precision Data Acquisition System Based on CS5460A

This paper introduces a high-precision data acquisition system which based on the serial A/D converter CS5460A.In one hand,the interfaces which are between the single-chip and the other kinds of chips are described briefly in hardware;In the other hand,the main program flow chart of the system is implemented in the paper,the most important is how to use the digital filter to improve the system＇s anti-Ability.The agreement between the single-chip and PC is taken by MODBUS communications which contains CRC algorithm.The use of filtering software and CRC,we can make sure the,exactness,the safety of memory and the transmission of data.This improved the safety of system.