车载式铁路轨道巡检数据无线传输加密系统设计

Design of Wireless Transmission Encryption System for Vehicle mounted Railway Track Inspection Data

摘要:

车载式铁路轨道巡检数据在运行中传输中，随着传输数据量的增大，局域网络布局不合理的弊端体现，导致数据传输能力与安全性下降。设计一种车载式铁路轨道巡检数据无线传输加密系统。由车载设备、DMS、无线通信模块、数据接收天线以及数据接收装置搭建数据无线传输加密系统框架，采用多个无线AP构建成局域网络，与车载无线传输网络实时链接并进行铁路轨道巡检数据传输。在系统框架的支持下，分别对系统硬件与软件进行设计。系统硬件主要分为业务逻辑、数据解析和无线通信三个层次。系统软件主要是利用AES对巡检数据进行加密，并获得对应的数字签名，对已加密的数据进行无线网络传输。经系统应用试验证明，所设计系统具备良好的车载式铁路轨道巡检数据传输能力，且数据加密性能良好，传输速度快。

Abstract:

During the transmission of vehicle-mounted railway track inspection data in operation, with the increase of the amount of transmission data, the unreasonable layout of local area network is reflected, resulting in the decline of data transmission capacity and security. A wireless transmission and encryption system for vehicle-mounted railway track inspection data is designed. The data wireless transmission encryption system framework is built by on-board equipment, DMS, wireless communication module, data receiving antenna and data receiving device, and a local area network is built by using multiple wireless APs, which is linked to the on-board wireless transmission network in real time and carries out data transmission for railway track inspection. With the support of the system framework, the system hardware and software are designed respectively. The system hardware is mainly divided into three levels: business logic, data analysis and wireless communication. The system software mainly uses AES to encrypt the patrol data, obtain the corresponding digital signature, and transmit the encrypted data through wireless network. The system application test shows that the designed system has good data transmission capability of vehicle-mounted railway track patrol inspection, good data encryption performance and fast transmission speed.