详细地介绍了一种新型医疗病房用多功能传呼系统的工作原理。该系统除实现护士站与病房之间的双向通话外,主机可显示终端的号码、还可定时测量患者的体温、心律,并打印结果。数据通讯采、用DTMF双音多频信号,并实现总线形式,保证了长距离传输信号的可靠性。 The working principle of a multifunctional paging system for a new medical ward is introduced in detail. The system in addition to the two-way call between the nurse station and the ward, the host can display the terminal number, but also regular measurement of the patient’s body temperature, heart rate, and print the results. Data communication mining, with DTMF dual-tone multi-frequency signals, and to achieve the bus form, to ensure long-distance transmission of signal reliability.