一种基于单片机串口的数据采集系统设计  

Design of data acquisition system based on the C8051F microcontroller serial port

作　　者：刘妍[1] 马艳娥[1] 陈思[1] 

机构地区：[1]中北大学无损检测中心,太原030051

出　　处：《电子测试》2011年第9期58-60,共3页Electronic Test

摘　　要：单片机经历了SCM、MCU、SOC三大阶段,以其超小型化、电路简单、功耗低等特点广泛应用于各个领域,本文提出了基于C8051F单片机串口数据采集系统的设计方案,进一步提高了采集系统的速率与精度。使用C8051F020作为控制器,控制采样位数为12位,转换速度为500kbps的A/D芯片MAX120进行数据采样,采样的数据实时通过串口传输到PC中。由于MAX120A/D转换芯片具有采集范围广,控制灵活等特点,其转换时间为16μs,吞吐率高达5*105次/s采样,可满足高速采集的需要。通过测定该系统满足实时采集、实时处理和实时控制对速度的要求。The microcontroller chip go through SCM、MUC、SoC,applied in various fields widely with its miniaturization and simple circuit and low power consumption,serial data acquisition sy-stem design scheme is proposed based on C8051F microcontroller,improve rate and precision fur-ther.The thesis designs C8051F microcontroller serial program and the peripheral circuit,C8051F020 as controller has sampling digits 12 bit,500kbps conversion speed for the MAX120 A/D chip,transmit sampling data real-time through serial port to PC.MAX120 as A/D acquisition system has wide acquisition range and can be controlled flexibly.Through measuring the system meet the requirements of the real-time data acquisition and real-time processing and control.

关 键 词：单片机 A/D转换 数据采集 

分 类 号：TP274.2[自动化与计算机技术—检测技术与自动化装置]