Design And Practice Of Vending Systems Based On Smart Meter With Fee Control

Smart grids are receiving significantly greater attention as they become an increasingly important aspect of national strategy amongst the developed world. As such, State Grid developed a series of standards for smart meter; acknowledging that fee control was a key requirement for the system. Included in these standards was a uniform definition and specification for the technology system; alongside the application methods of fee controls for energy meters. Designing the corresponding application system for fee control meters, therefore, should have considerable technical and market significance.This article first introduced the application background of fee controls both domestically and abroad, comprising of the historical and current statuses of respective fee control systems; with a particular focus on the concepts surrounding the State Grid's system. Following this, the paper then highlights the standards and classifications of the IC card with detailed analysis on specific components of the CPU card, ESAM card, COS and key, issuing card and vending machine systems. The major aspects of smart meter fee control design are scrutinized in relation to terminology, accuracy, electrical and functional requirements that stem from the standard system of energy meter design. Detailed descriptions of the data transfer and media authentication of fee control smart meters are also included; from the perspective of data system design; taking into account the ESAM file system, CPU card file system and communication protocols. This paper focuses on analyzing software design requirements of fee controlled vending systems, but also examines the electricity management system, Architecture. This system supplies a practical application of the fee control function, in terms of both remote and local fee control.This investigation observes that flexibility in a system's design is essential for local and remote fee control applications, in order to meet a variety of application and management needs.