基于USB总线的数控测井地面数据采集系统  

Design and Implementation of Computerized Logging Ground Data Acquisition System Based on USB

作　　者：范乃强[1] 王国珲[2] 吕亚荣[2] 

机构地区：[1]西北工业大学,陕西西安710072 [2]西安交通大学,陕西西安710049

出　　处：《仪表技术与传感器》2009年第1期59-61,共3页Instrument Technique and Sensor

摘　　要：以RS-232总线为接口的数控测井地面数据采集系统在处理数据的速度上已经不能满足测井的要求。设计了一套基于USB总线的数据采集系统。系统硬件采用了双CPU共享双端口RAM的方式,系统软件采用多任务机制,实现了信号采集和USB数据通信的并行处理。经过实际测井验证,该系统满足数控测井的要求,且数据处理速度比传统测井系统提高了70%。The computerized logging ground data acquisition system with RS -232 bus has lagged behind the present requirement in the data processing speed. This paper designed a system based on USB bus, and the system hardware adopted the technique of double CPU sharing dual port RAM ; while the system software utilized the multi-tasking mechanism, which implemented the parallel procession of signal acquisition and USB data communication. And the new system is practically verified to meet the demand of logging. Moreover, the speed in data processing is improved by 70% compared with the conventional system.

关 键 词：USB总线 数控测井 数据采集系统 多任务机制 

分 类 号：TP39[自动化与计算机技术—计算机应用技术]