提出了图象灰度的亮度加权平均和位置加权平均的一种新的图象变化识别技术，依此原理并把电视技术与计算机技术相结合，设计研制了图象智能检测报警记录系统，介绍了系统的组成及技术原理。 A new image change recognition technology based on weighted average of image gray level and position weighted average is put forward. Based on this principle, combining with television technology and computer technology, an image intelligent alarm detection and recording system is designed and introduced. The composition of the system and technical principles.