现场总线式智能位移变送器

摘要

This paper shows the application of digital phase-locked loops in intelligent displacement transfer. The new type transfer used digital phase-locked loops as core of motive measurement was designed. The device make the best use of the character of digital phase-locked loops so that its measure precision and speed is enhanced. HART protocol is used.%提出了以数字锁相环为动态测量核心的现场总线式智能位移变送器，充分利用了数字锁相环的相位误差累积作用，提高了位移变送器的测量精度和测量速度；采用HART协议作为现场通信协议．