关键词: C/S多层结构, 3G通信, Twisted框架, 安全体系建设, 核磁共振成像, 用户数据报协议

Abstract: To solve the problems of decentralized management and lack of remote technical assistance, the paper proposed a remote monitor and control system for Magnetic Resonance Imaging (MRI) equipments. Based on the multilayer structure of C/S and remote monitoring technique, the system consisted of four parts: client, query server, device server and device. These parts adopted the frameworks of .NET, Twisted and MFC, while Twisted was an open event-driven framework for the server. To protect the secret data, the survey attached great importance to security architecture, such as the authorization code and the encryption technique. The system realized the functions of remote data transfer and control based on the 3G communication technology, and the virtual channel between the MRI devices and remote clients help the enterprise manage the devices remotely. After the systematic testing and the trial operation, the system is now successfully applied to the actual working environment, and it has good performance.

Key words: multilayer structure of C/S, 3G communication, Twisted framework, security system building, Magnetic Resonance Imaging (MRI), User Data Protocol (UDP)