| The Metro have the advantage of large traffic volume,fast speed,less noise and energy saving,making it more and more important in modern life.Because of the huge people number and small space,the safety became more and more important.Every year,many accident occurred in metros,making the people and item damaged.For signal system,the wrong control may cause people die,also for traction system,the abnormal control may cause people get hurt.Based on the DCU software for Shanghai Metro Line 17 and the function safety in IEC62279,we designed a software which is fulfill the requirements of safety,then tested;verified and validated this software,proved that the software safety design is correct and effective.To apply the DCU control software,we used structured system analysis and design method,defensive programming method,and fanction/black testing method,finished the requirements design,architecture design,component design and test,verified all this jobs,validated the operation system and the compiler. |
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