基于CPLD的多路全并行连续数据采集技术研究

本文介绍了一种多路全并行连续数据采集技术，该技术利用复杂可编程逻辑阵列在时序设计中的灵活性实现多路同步采样数据在单采样周期内的分时存储，并采用硬双缓冲技术实现连续交替存储。使高速数据采集和数据传输同时进行。与通常的分立式设计比较而言，该设计减少了实现的复杂程度并具有更好的稳定性。

Multi-channel Parallel Data Acquisition Technology Based on CPLD

In this paper, a successive data acquisition technology is introduced, which is multi-channel and fully-parallel. It adopted the time-sharing storage technology using the complex programmable logic array to store multi-channel data in one single sampling period. At the same time, the high-speed data acquisition and the data transmission can work simultaneously due to the application of the hard double caches, which satisfies the requirement of real-time system. In order to verify the validity of the technology in this paper, a four-channel sampling emulation experiment is presented. The analysis showed that the emulation results and the theoretical data are in good agreement. As compared with general discrete component design technology, the technology in this paper is characterized by greatly reducing the complexity of implementation and being more stable.