Due to the fact that the traditional fault location method of expressway electromechanical equipment has a long fault diagnosis time,and the false alarm rate,false detection rate and missed detection rate are dif-ficult to meet the requirements of users,a fault location method of expressway electromechanical equipment based on hybrid fault dictionary is proposed.Through the multi-dimensional sensor radio frequency identifica-tion technology,the radio frequency beam information model of expressway mechanical and electrical equip-ment device fault is established to obtain the expressway mechanical and electrical equipment fault data.Two dictionaries are established.The first fault dictionary is used to estimate the central distance between the ex-pressway electromechanical equipment fault information data and various fault mode types.The decision func-tion type to be estimated is judged according to the distance.Based on the predetermined design algorithm,the decision mechanism of the second fault dictionary is used to locate accurately the expressway electrome-chanical equipment fault.The experiment results show that the fault location method of the expressway electro-mechanical equipment based on the hybrid fault dictionary can ensure that the false alarm rate is 0,the false detection rate and missed detection rate are less than 1％,and the detection time is reduced by more than 50％compared with the traditional detection time.
维普
万方数据
