SDS（Smart Distribution Systems ）是由Honeywell Micro Switch公司开发的一个开放式网络标准。本文主要介绍了SDS的发展背景、技术特点及其设备建模。关键词：SDS；控制器局域网(CAN)CAN-based open distributed system standards SDS Wang ling，Zhang feng-deng(College of Electronics and Optics, University of shanghai for Science and Technology, shanghai, 200093, china) Abstract: SDS (Smart Distribution Systems) is an open network standard developed by Honeywell Micro Switch. SDS is presented with its background, the key technologyand device modeling in this paper.Key：SDS；CAN (Controller Area Network)