为了在震后能够及时获取大坝震动信息,以及远程管理的需要,研究并开发了大坝远程强震监测系统,并对各种通信方式进行了研究和应用。着重介绍其中一种基于公共交换电话网(PSTN)的大坝强震动远程监测系统通信协议的设计规则以及系统通信的线程设置。通过工作流程图以及系统的几组源代码,介绍了应用PSTN进行信息通信的关键技术。 In order to obtain timely dam vibration information and the need of remote management after the earthquake, the dam remote strong earthquake monitoring system is researched and developed, and various communication modes are researched and applied. One of the design rules for the communication protocol of strong dam remote monitoring system based on public switched telephone network (PSTN) and the thread setting of system communication are emphatically introduced. Through the workflow diagram and several sets of source code of the system, the key technologies of applying PSTN for information communication are introduced.