摘要
为针对一般的数据采集系统精度较低、价格较高的问题,设计了一种低成本、高精度的多路数据采集系统。系统由上、下位机两部分组成,上、下位机通过RS-485总线进行通信。下位机选用C8051F350作为主控制器,A/D转换采用C8051F350内部24位Σ-Δ型ADC,并设计了RS-485总线接口,便于接入RS-485总线网络。上位机软件使用LabVIEW编写,具有较好的人机交互界面。实际使用表明,该系统能够满足高精度数据采集的要求。
Because general data collector accuracy is lower,the price is higher; we design a low cost and high precision data acquisition system.The system was composed of upper computer and lower computer,upper and lower computer communicated with each other with the RS-485 bus.The lower computer system chose C8051F350 as the main controller,used the C8051F350 the internal 24Σ-△ ADC to achieve A/D conversion,and RS-485 bus interface is designed for easy access to the RS-485 bus network.PC software based on the LabVIEW platform has good humancomputer interaction interface.Practical use shows that the system can meet the requirements of high precision data acquisition.
出处
《电子设计工程》
2014年第5期154-156,共3页
Electronic Design Engineering
