Research On RFID Tag Estimation And Anti-collision Algorithm For Aviation Logistics

Aviation logistics business process is complex,and involves the cooperation among multiple subjects cooperation.However,it is relatively backward for the information collection and the information transmission method among each subject.The information collection and information transmission done by manual work exist some problems such as low efficiency,misdetection of cargo information and loss of cargo list information.These have brought great loss to aviation logistics companies.Radio frequency identification(RFID)technology has great advantages in collection and identification of cargo information.Therefore,it is necessary to research the application of RFID technology to improve the efficiency of aviation logistics system.Firstly,according to the problems of information collection and transmission in the business process of aviation logistics,this paper analyzes the application scenarios of RFID technology in aviation logistics,and proposes an aviation logistics model based on RFID technology.This model can not only ensure the rapid collection and transmission of cargo information but also realize the sharing of the whole process information of aviation logistics transportation.Secondly,for the contradiction between the estimation accuracy and the calculation amount of the RFID tag estimation method,and the instability of the estimation method performance caused by the randomness of the tag reading process in the field of air cargo networking information gathering,a method for estimating the number of RFID tags based on coarse-fine quadratic estimation is proposed,which combines the fast of coarse estimation,the accuracy of fine estimation and the stability of the quadratic estimation algorithm.The estimated average error of the algorithm is 3.8%,the stability of the estimation is significantly improved,and the calculation amount is greatly reduced.Finally,aiming at the RFID multi-tag collision problem,an RFID anti-collision algorithm based on tag grouping reservation slots is proposed based on the research of tag estimation algorithm.The algorithm combines the tag grouping mechanism and the tag reservation mechanism.The tag quantity of each identification can be controlled by the tag grouping,and reduces the probability of a reservation failure and the probability of a collision in the reserved slot mechanism in the case of a large-scale tag,improving the efficiency of the anti-collision algorithm.