数字式一线温度传感器的出现为数字式传感器的发展奠定了基础。介绍了一线总线温度传感器的工作原理及其采用的协议规范,讨论了其同单片机和有关电路同其的接口电路,给出了试验结果。关键词:传感器; 一线总线; 接口; 时隙; 单片机Abstract : The birth of digital temperature sensor will promote digital sensors’s development . Working principle and its protocols of 12wire bus sensor is introducd. Its interface with single2chip processor and other circuits is dis2 cussed ,the application result is also given.Key words :sensor ; 12wire bus ; interface ; time slot ; single2chip processor