Remote Testing System Of Six Axils Locomotive Roll-Rig Based On LAN

Six axils locomotive roll-rig is an important equipment for new-model locomotive and routine test in electric locomotive works. The testing system for the roll-rig not only requires large numbers of data acquisition channels, high measurement precision and sampling frequency but also can be configured flexibly. The paper designs a remote testing system of six axils locomotive roll-rig based on LAN, which is the project of Zhuzhou Electric Locomotive Works.Considering many test parameters, a great quantity of data and real-time data processing during the course of test, network transmission is used between the testing subsystem and the operating subsystem. Network transmission can get rid of the limits of distance, make data acquisition instrument and sensors as near as possible, decrease interference in the course of transmission, and improve measurement precision.The main problem the paper tries to resolve is the choice of hardware which contains sensors, computers, data acquisition instrument based on VXt; the design of software module, which is composed of the structure of whole software, network communication, data processing and report forms; the design of graphic user interface; the debug of hardware and software. Software module is achieved by using UML and object oriented language Delphi. Data processing is realized by script language Python, which has many functions interface. Report forms are fulfilled by Microsoft Word, which specializes in word processing and provides flexible report forms.Proved by new-model tests of SS3B electric locomotive and Uzbekistan export locomotive, six axils locomotive roll-rig remote testing system on LAN works reliably and meets requirement as expected.