论文部分内容阅读
DKHK型铁路贯通/自闭线配电开关自动化系统是采用改进的故障定位算法来实现线路故障定位和报警,本文的研究是为了实现该系统的远距离通信问题。该通信系统采用2级通信,在每个区域中,由一个工控机组成最上层,中间层由几台PC104组成,每台PC104管理10台左右的下位机。上层工控机与PC104之间采用CAN总线协议,PC104和下位机之间采用RS485通信协议。在系统装置(FTU)数量大,分布地域广的基础上实现大量数据远距离传输的完整和准确、实时性高、按故障优先级别来传输信息。各通信设备之间独立运行,彼此之间只由通信网络联系,部分设备故障不影响其它设备的正常运行,也不会降低速度。
DKHK railway through / self-closing distribution switch automation system is the use of improved fault location algorithm to locate the line fault and alarm, this study is to achieve the long-distance communication system. The communication system uses two communications, in each region, composed of an IPC at the top, the middle layer consists of several PC104, each PC104 management about 10 next crew. Between the upper IPC and the PC104 using CAN bus protocol, PC104 and the next crew using RS485 communication protocol. In the large number of system units (FTU), distributed widely on the basis of a large number of long-distance data transmission to achieve complete and accurate, real-time high, according to the priority level to transmit information. Each communication device operates independently and only communicates with each other through the communication network. Some of the device failures do not affect the normal operation of other devices and will not reduce the speed.