基于嵌入式系统的智能数据采集系统

Intelligent Data Acquisition System Based on Embedded System

将 μC/OS Ⅱ实时嵌入式操作系统移植到高性能 1 6位单片机 80C1 96KC上 ,选用两片MAXIM公司八通道同步十四位A/D转换芯片MAX1 2 5构成实时高速十六通道同步数据采集系统。以IntelCHMOS高性能 1 6位单片机 80C1 96KC为核心 (MCU) ,并选用Lat tice公司可编程逻辑器件CPLD扩展 64路数字量采集和输出 ,数据采集系统可通过RS 485通信总线与其它系统建立通讯。该系统能广泛应用于电力系统、自动控制系统等对数据采集速度、精度、实时性要求高的场合 ,具有较强的应用价值。

The real-time kernel μC/OS-Ⅱwas replanted on Intel CHMOS high-powered 16-bit singlechip 80C196KC , two high-speed ,8-channel ,14-bit data-acquisition chips with four simultaneous track/holds named MAX125 were selected to organize the real-time and high-speed data acquisition system. At the same time by the in-system programmable high density logic device named Lattice ispLSI1032 the digital data acquisition and output channels totaled 64 channels were extended. The communication between this data acquisition system and other systems can be set up by RS-485 communication bus. The data acquisition system introduced in this paper can be widely employed in electrical auto-control system where data acquisition speed , precision and real-time performance are strictly required. Undoubtedly this data acquisition system has much practical value.