Research And Application Of Key Technologies In Self-service Card Making POS Transaction System

In recent years,with the continuous development of Internet technology and the improvement of the service level of self-service application systems,self-service terminal systems for different scenarios have emerged in more and more industries.For example,self-service registration,payment,and printing tests have appeared in the medical industry.Single-function self-service terminal,supermarkets have a service terminal that can self-checkout.As a petrochemical enterprise in Chinese traditional industry,in order to solve the problem of loopholes in sales business and low service efficiency,the demand for information transformation of existing business is proposed.This paper analyzes the petrochemical enterprise's sales card business needs and existing related business systems,designs and implements a self-service card POS(Point-Of-Sale)trading system running on multiple hardware integration platforms.Then introduces the implementation details of key technologies.The system not only realize the seamless connection with related business systems,but also improve and optimize the existing financial IC(Integrated Circuit)card transaction process for the transaction link.Besides it implements a dynamic key-based transaction data security encryption strategy which can realize the transaction operation with the bank on the based of meeting the requirements of the financial IC card transaction process and has good flexibility and maintainability.The topic firstly studied the transaction process of the financial IC card and the communication method between the terminal and the financial IC card.On this basis,the transaction process was improved and optimized,In the case of abnormal trading,the performance of the transaction increased by about 14.85%on average.,and at the same time ensure the security of the data in the terminal and the card.Secondly,a set of transaction data security encryption strategy based on dynamic key is implemented.Under the condition of little impact on system performance,the security of transaction data during self-service card making is guaranteed..Finally,the specific self-service card is designed and implemented POS trading system,which has the functions of self-service card,self-checkout,check balance,etc.,fully meets the sales needs of enterprises,reduces labor costs and greatly improves service efficiency.The system has been successfully run on self-service terminal equipment and deployed within the petrochemical enterprise.Through the actual test,it shows good efficiency and reliability.The system not only solves the loopholes in the petrochemical enterprise sales business,but also saves 75%of the time-consuming consumption of each user's card-making business compared with the previous manual window card-making operation.The trading module can run at a stable time between 2 seconds and 4 seconds.