Design And Development Of Power Source Monitoring System For Level â…  Railway Load

With the speedy development of the railway transportation business , especially at the moment of "the fifth highly speeding-up" of the railway in our country, the applications of those "first level loads" such as the railway running signal, the railway running directing system, the infrared ray centered temperature testing, the identifying system of the train number and communication based on the fiber cable allover the whole country , and this bring up more and more requests to the dependability and the quantity of the railway electric supply system . To monitor the AC power supplying quantity of the railway electric first level loads at the real time, to analyze the running situation of the system accurately and quickly and to reduce the analyzing and resuming time of the breakdown and to increase their security and dependability have become the urgent matter for the water and electricity supply section.This article, combined with this urgent engineer problem, firstly summarize the general developing situation of the monitor the first level loads source and describe the importance in researching on this problem. Furthermore, it gives the design through using the single-chip microprocessor controlling technique and microcomputer technique to design a set of monitoring system. The system , which can collect, analyze, store data about the voltage,current and power of the first level loads . In addition, it can also exchange data.This article focuses on describing the designs of the hardware and software of the power source for railway electric loads. On hardware design, it describes stressly the choice of the monitor's main processor, the division of the hardware function module, it discusses the main chains of the hardware design and introduces particularly the typical application of the power measuring chip CS5460A and the clocking chip DS12887. On software design, it gives the design of the installation software of the source monitoring system, the management software of the system and the software of the PAD monitor. About the installation software of the source monitoring system, this article emphasis the dealing flow and the core coding of the sampling software, the managing software and thecommunicating software. About the management software of the source monitoring system, this article emphasis the function of the software, the choice of the development platform, the definition of the data structure, the running flow of the system and the design of the human-machine platform. About the software of the PAD, this article emphasis the function of the software, the running flows of the system, and the design of the human-machine platform. Finally, using the designed source monitoring system for first level loads to set up an experimental system and carrying out the relevant measurement of the voltage and current, the measuring precision meets the design request, and this proves the feasibility of the design on some degree. The end of the article prospects the further research of this topic.