A good architecture is the basis of system security and stable operation, which can effectively reduce the risk of system construction, and ensure health development. The mobile payment system involves many links; the process is complex and diverse with higher security requirements. Combined with advanced security technology --- tolerance mechanisms, a novel mobile payment system architecture is design. Voting unit and detection unit checks the states of system; management unit restores or reconstructs system to ensure the operation of key services by redundancy of services and equipments; Threshold (n, t) multiplies the difficulty of the attack proxy server to gain access to sensitive information. According to security and performance analysis, proposed architecture is safe and effective.

To meet different DCS training requirements of thermal staff, while addressing the high cost of purchasing several sets of DCS, this paper presents the general DCS configuration training platform, which is based on Ovation system, could simulate the Symphony, XDPS and other DCS training environments, and complete basic operations such as configuration, compilation, downloading and debugging. This platform gets significant savings in expenses, and provides a new idea for thermal training.

A remote supervisory system of classroom lighting based on LonWorks fieldbus is presented, which controls the switch state of lights and the number of lights to turn on, achieving the purpose of energy saving. The administrator can remotely know the situation of each classroom, and be able to perform manually control. The experiment results show that the proposed supervisory system has the qualities of easy to implement, high reliability, and easy to expand.

A modeling method of single-phase grid-connected photovoltaic micro-inverter is presented in this paper,which depends on the topology structure of fly-back converter. Simulation of the micro-inverter is performed using Matlab software, which has the virtues of high accuracy and fast speed. Prototype experiment results show that the simulation model can be a true reflection of the working process of a micro-inverter, and could be used to verify the control algorithm and select the control parameters.