Development Of HMI Automation Test Platform

HMI(Human Machine Interface,HMI),able to connect to the programmable controller(PLC),inverter,dc speed regulator,instrumentation,industrial control equipment,realize the information interaction of digital Human and Machine equipment,composed of two parts of hardware and software.Traditional testing methods and methods are not fully adapted to the problems of HMI development testing,low manual test efficiency,and difficult to guarantee test coverage.Therefore,it is of great practical value to develop a set of HMI automatic test system.This thesis first introduces the development history and research status of HMI Testing,and designs HIM Automated Testing platform according to the Automated Testing life-cycle Methodology.Discuss whether automatic testing should be adopted according to the test status;According to the test requirements,after analyzing and comparing various test tools,TestComplete was selected as the main test tool.After classifying manual test cases,the use cases that can be automated are selected and transformed into automated test cases.According to the test requirements and test cases,the framework structure design of the automatic test cabinet and the network design of two-level network control topology structure are completed.Using Web Gate Complete HMI image retrieve and return have to click on the coordinates,in comparison with checkpoints on PC,and write the Test Complete Test engineering of JavaScript,C#Test script,Complete the design of the Test automation platform software part.Finally,through the application in actual test work,compared using automated tests and manual tests,the results show that the automated tests in terms of boundary value testing,the system performance,can realize the automation of 100%rate;The structure of automated testing is consistent with the results of manual testing.The test efficiency of automated testing is very high,especially in regression testing,which can save 99%of the time,and the comprehensive test items can save 86.5%time.The experimental results show that the HMI automated test platform can reduce the working pressure of testers and meet the actual requirements.