Study On The Strategy Of Differentiated Security Check Of Checked Baggage

The purpose of the analysis and research on the checked baggage security check system is to improve the security of the checked baggage security check system and the utilization efficiency of the security check resources for civil aviation passengers,so as to realize the happy demand of safe and convenient travel for civil aviation passengers.First of all,based on the method of probability and statistics modelling the checked baggage security system false alarm probability and false clear probability,using the speed-accuracy operating characteristic curve analysis system error rate with time variation law of Xray image identify,concluded that with the increase of identify image time,system false alarm probability increases,the false clear probability reduces,and weighs two indexes to get the best time to identify the image.Secondly,based on the passenger risk level,they could be divided into high-risk travelers and ordinary passengers.Based on Case1 and Case2 of the 5-level security check system,design the differentiated security check mode of checked baggage,and the differentiated security check mode is helpful to improve the security of the system is obtained by calculating the error rate of the system.Thirdly,considering the dependence of the device response in the system,the data fusion theory is integrated into the checked baggage differentiated security check mode.The joint response distribution function of the two devices is established by using the binary normal distribution.The results show that the joint response of the two devices is helpful to improve the security of the differentiated security check system,but at the same time,the increase of the number of false alarms will lead to more bags to be checked,which will reduce the security check efficiency to some extent.Finally,analysis the influence of the correlation coefficient of the two devices,the device threshold and the probability of carrying contraband in checked baggage on the error rate of the differentiated check baggage security system.