介绍了CAN现场总线技术及特点，提出了一种基于CAN现场总线的单个温度测量节点的设计，给出了测量节点的硬件实现框图、软件设计。系统运行结果证明：CAN总线提高了信号传输的实时性、可靠性，增加了传输距离，测量精度也得到了显著的提高。

This paper introduces the CAN field bus and its characteristics，presentes a kind of single Temperature Measurement node based on CAN bus，and offeres the realization of hardware and design of the measurement node．The results show that the CAN bus can improve the time，distance and dependability of the signal transmission，and the measurement precision is improved remarkably．