AD采集中二值跳动分析及对策研究

Analysis and Research on 2VRJ in AD Collection

在嵌入式系统AD采集中,经常会遇到采集到的AD值在两个值之间反复跳动的现象,有些是系统电磁干扰造成的、有些是系统硬件性能造成的、也有些是实际情况的真实反映,这些二值跳动现象,会导致仪表数据的跳动,不但影响系统体验感,而且容易导致系统设备频繁启动,影响系统稳定性。通过对实测数据进行分析,深入探讨二值跳动的原因及危害,针对反映真实情况的二值跳动现象,提出二值缓存法和趋势法等解决方法,有效解决二值跳动问题,在所指导开发的2015年大学生实践创新训练计划项目中得到稳定发挥,提升系统的体验感并有效避免控温设备的频繁启动。

The AD values are often repeated jump between two values in embedded system, we called it 2VRJ for short, it is caused by electromagnetic interference in some systems, caused by the constraints of the system hardware performance in another system, and it is the real reflection of the actual situation in some system. 2VRJ not only reduces the stability of the system, but also frustrates user experience, and it results in the most serious consequences. Through the analysis of the measured data, studies the causes and harms of the 2VRJ, and designs two values cached method and trends method solution which can effectively solve the 2VRJ, it can enhance the experience of the system and avoid the frequently restart of the temperature control system in 2015 college students practice innovation training program.