介绍一种基于MCS-51单片机的管道保温层自动纠偏系统的设计原理及方法。纠偏系统能够根据保温层与钢管的偏心程度,自动调整纠偏环的位置,使保温层与钢管始终保持同心,从而使保温层在整根钢管上的厚薄均匀一致,提高钢管的保温及防癌性能。 This paper introduces a design principle and method of automatic correction system for pipeline insulation based on MCS-51 singlechip. Deviation correction system can be based on the insulation layer and the degree of eccentricity of the pipe, automatically adjust the position of the correction ring, so that the insulation layer and the pipe is always concentric, so that the thickness of the insulation layer in the whole pipe uniform and improve the steel pipe insulation and anti-cancer performance .