作者:刘锐, 王林
作者单位:中国测试技术研究院, 四川 成都 610021
关键词:LPC2138; 数据采集系统; A/D转换; ARM微处理器
摘要:
为了实现快速有效的数据采集和数模转换,采用PHILIPS公司ARM7TDMI-S核的LPC2138为控制处理核心的数据采集系统的软硬件设计,实现了系统硬件部多模块的独立设计。系统采用LPC2138自带的ADC进行A/D转换,采集到的数据直接通过串行口发送到PC机上,操作更加简便、快捷、直观、精确。系统软件在ADS1.2编译环境下完成,采用C语言与汇编语言混合编程,充分利用了不同语言的优点。系统采用ARM微处理器,有体积小、低功耗、高性能等优点,具有广泛的应用前景。
Design of data acquisition system based on ARM
LIU Rui, WANG Lin
National Institute of Measurement and Testing Technology, Chengdu 610021, China
Abstract: With the rapid development of digital technology, digital equipment has become a mainstream component for observation instruments, thus data acquisition has also become a very important observation techniques of technical aspects. In order to achieve fast and efficient data collection and modeling conversion,the hardware and software for data acquisition system was designed using LPC2138 with a ARM7TDMI-S core, produced by PHILIPS, as controlling center. The hardwires in the system were designed as multiple independent modules. The ADC system in LPC2138 is used for A/D conversion and the data collected were send to the PC directly through the serial port, making the operation easier, faster, more intuitive and precise. System software was compiled in ADS1.2 using mixed C and assembly language programming, making full use of the advantages of different languages. The system uses the ARM microprocessor, which has the advantages of small size, low power, high-performance, and is quite promising in numerous applications.
Keywords: LPC2138; data acquisition system; A/D conversion; ARM microprocessor
2010, 36(4): 89-92 收稿日期: 2009-8-17;收到修改稿日期: 2009-11-5
基金项目:
作者简介: 刘锐(1986-),男,四川成都市人,助理工程师,主要从事三表的检定工作。
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