多通道高精度A/D数据采集系统

Multichannel System of Data Collection with High-accuracy A/D

基于串行总线(SPI)的异步通信是一种实用高效的数据传输方式。本文介绍了一种16路高精度的数据采集系统,以AT89C2051单片机为核心,采用LTC2448(24位串行A/D转换器),设计了一个串行数据采集/传输模块,给出了硬件原理图和主要源程序。

Asynchronous communication based on Serial Bus is one kind of pragmatic high-effect way of data transmission. One kind of 16 channels high-accuracy data acquisition system is presented , which adopts a single chip-AT89C2051 and a serial 24 bits A/D converter- LTC2448 . A serial data acquisition module is designed and corresponding hardware working principle picture and main source program are given.