本文介绍了利用89C2051单片机实现对电梯运行信号的采集，通过MAX485/487以及VB语言实现多单片机与PC机之间的远距离串行通讯，从而在PC机上实现对多台电梯运行状况的中央监控。关键词：数据采集 单片机 串行通讯 远程监控Abstract:This paper introduces the realization of acquiring the elevators running signals by 89C2051 single-chip computers, and discusses the remote distance serial transmission based on the MAX485/MAX487 and VB language, in the end, this paper gives the realization of remote elevator monitoring on PC.KeyWords: data acquisition; single-chip computer; serial communication; remote monitoring