基于CH375的智能数据采集卡  

Intelligent Data Acquisition Card Based on CH375

作　　者：侯进振[1] 占涛[1] 毛乐山[1] 

机构地区：[1]清华大学精密仪器与机械学系,北京100084

出　　处：《现代电子技术》2010年第10期143-145,共3页Modern Electronics Technique

摘　　要：为摆脱数据采集卡对计算机的依赖,研制出一种基于ARM7内核处理器ADuC7026和USB 2.0控制器CH375的智能数据采集卡。该卡可以实现4路信号的波形、频谱信息的实时显示和记录,并具有联机模式和离线模式。在离线模式下可以脱离上位PC机独立工作,将采集的数据存入U盘。硬件方面采用AD8275,AD8251实现的多通道共用信号调理电路,可实现4通道极性、量程的任意配置;下位机软件方面实现ADuC7026扩展USB 2.0接口,并通过它进行U盘的操作;上位机软件方面采用Visual C++6.0开发应用程序对USB固件进行调试、数据接收和分析处理。An intelligent data acquisition card based on ARM7 processor ADuC7026 and USB 2.0 controller CH375 is developed to get rid of dependence on PC.This card can display and record real-time waveform and spectrum of 4-channel signal.There are two modes：online and offline.When it′s in offline mode,data can be collected into a U-disk without PC.In hardware designing,the signal conditioning circuit which is composed of AD8275,AD8251 is used that can make 4-channel implementation more flexible,The inferior processor software achieves the interface between ADuC7026 and USB 2.0,and writing of U-disks.The PC software written in Visual C＋＋ 6.0 actualizes USB firmware debuging,receiving and analysing of the data.

关 键 词：ARM7 USB2.0 CH375 数据采集卡 U盘 

分 类 号：TP274.2[自动化与计算机技术—检测技术与自动化装置]