基于单片机的高精度快速积分型AD转换器

摘要

For problem of low conversion rate of current integral AD converter, the paper proposed a design scheme of fast and high-precision integral type AD converter based on single-chip microcomputer,and introduced implementation of AD conversion process in details. The converter uses single-chip microcomputer generates various control signals to ensure accurate synchronization of measurement process, and improves stability of measurement results of AD, whose fastest conversion speed is up to 500 times/s. The practical application showed that the converter has fast conversion speed and high measurement accuracy, which achieves desired results.%针对现有积分型AD转换器存在转换速率较低的问题,提出了一种基于单片机的高精度快速积分型AD转换器的设计方案,详细介绍了AD转换的实现过程.该转换器采用单片机产生各种控制信号,保证了测量过程的精确同步,提高了AD测量结果的稳定性,最快转换速度可达500次/s.实际应用表明,该转换器转换速度快,测量精度高,达到了预期效果.