机场安检门远程监控系统研究

Study ofWalk-Through Metal Detectors Remote MonitoringSystem in Airport

摘要:

针对我国机场安检设备管理和使用的不足,以安检门为实验对象,研究了一种安检门远程监控系统。系统对工业总线中的Modbus协议根据实际需要进行了改进,将改进的Modbus协议作为上位机与分机的数据交互标准,采用扩展的nRF905通信板实现无线数据通讯,利用二次CRC校验的方式来减少误码率,同时结合Labview图像语言编写人机交互界面,利用其内嵌的Web Server将数据信息发布到Web上。经过实验室多次运行工作,验证了系统的稳定性和可靠性,满足设计要求,应用前景广泛。

Abstract:

According to the shortcomings of the metal detectors’ management and function in the airport of China, using walk-through metal detectors as subjects, which proposes a system of walk-through metal detectors remote monitoring. It improves the Modbus protocol of industrial bus under the practical requirements. The improved protocol is a standard in communication of a PC to machine and the extended nRF905 circuit is made use for wireless communication. The system can decrease wrong data by double CRC verification and compile human-computer interface by Labview language. It will share the interface on Web through the function of Web Server. The application system is stable by laboratory testing. It can meet the design requirement.