Research On Portable Detection Device For Railway Signal Relay

With the development of industrialization and economic,high-speed railway has become a symbol of national strength.The railway is in a period of great development.The railway authorities put safety and stability first.The accident caused by the failure of railway signaling equipment reminds us,more attention should be paid to the detection of railway signal equipment.The signal relay plays an important role in the railway signal equipment,which has a great influence on the safety of the track transportation.The existing relay detection equipment is usually huge in volume,and it is always tested in large numbers,does Not meet the needs of today’s front-line workers.If the relay parameters can be detected quickly,reliably and accurately,the operation of railway signal equipment will be more stable and reliable,and the maintenance and management will be more convenient.In addition to the huge volume of the current detection equipment,the detection method is not convenient enough.This equipment will be designed in a portable way,using the upper computer software design and circuit design,so that the small volume detection equipment can meet the detection of various types of relays,it has the advantages of high precision,excellent stability and fast test speed.The main contents of this paper include:Design the overall scheme of the portable relay testing equipment,arrange the modules,select the main hardware in the modules.Designs the hardware circuit of the portable relay test equipment,innovates the separate circuit which is different from the traditional test bench,integrates the test circuit of many types of relays,and saves the space greatly.A new type of connector and box are used to make the connection of relay test equipment compact and reliable,and the whole equipment is small and easy to use.The relay detection software is written,the relay standard test procedure is written into the software,the hardware equipment is controlled and invoked by the host computer,the test process is fully automated,and a simple and easy-to-understand display panel is made,so that the operator can just click on the screen to complete the test.The experimental verification and uncertainty analysis of the equipment show that the precision of the equipment meets the requirements.The fault tree analysis of relay fault is carried out by combining the detection content with fault type.This paper gives a complete introduction to the design and construction of the portable relay detection box,and the experiment verifies the accuracy and reliability,which provides the on-site detection capability for railway signal equipment,the utility model is convenient for the daily maintenance and testing work of the front-line workers.The common features and abnormal parameters of relay fault are analyzed,which provides the idea and basis for fault diagnosis of relay.