摘要
采用浮点放大器和CPLD设计了多通道数据采集系统。其中浮点放大器根据输入信号范围,选择适当的放大倍数,保证了数据采集系统的动态测量范围;CPLD具有丰富的内部资源和大量I/O管脚,处理速度快,可实现灵活多变的控制流程;双端口RAM作为A/D转换与CPU之间的桥梁,为高速数据吞吐提供了有力的硬件支持;结合以上几方面的优势,系统总体上实现了高速、高精度数据采集。
Based on float-point amplifier and CPLD, the multi-channel data acquisition system has been designed. According to input signal range, the float-point amplifier enlarges suitable multiples to ensure the dynamic extension; The CPLD have abundant internal resource and lots of I/O pins and its processing speed is quick, then it can realize flexible control process; As a bridge between CPU and AID convertor, the dual port RAM provides hardware support for high-speed data transmission; Combining above several advantages, the system achieves data acquisition in high speed and high accuracy.
出处
《电测与仪表》
北大核心
2007年第7期53-56,7,共5页
Electrical Measurement & Instrumentation
基金
国家863基金项目资助项目(2002AA812038)
