基于毫米波的车载监控视频转储需求与部署方案

Demands and Deployment Scheme of Urban Rail Transit On-board Surveillance Video Data Dump Based on Millimeter Wave

上海轨道交通14号线、15号线和18号线列车直接配置90 d车载视频存储容量的方案不能适用于更早开通的线路。分析了通过毫米波车地无线通信实现车载监控视频转储的需求和优势;以上海轨道交通15号线真实数据为基础,详细计算了列车运营期间产生的监控视频数据量和地面存储中心容量需求,并进一步介绍了两种车载监控视频转储部署方案及其相关性能参数的计算方法;对比了两种方案的适用性,总结了两种方案的应用场景和约束条件。

The scheme of directly configuring 90 days’on-board video storage for Shanghai rail transit Line 14,Line 15 and Line 18 cannot be applied to the lines operated earlier.With an analysis of the demands and advantages of on-board surveillance video data dump based on millimeter wave wireless communication,and according to the real data of Shanghai rail transit Line 15,the amount of video data generated during train operation and the capacity requirements of ground storage center are calculated in detail.On this basis,two on-board surveillance video dump deployment schemes with the calculation methods of relevant performance parameters are further introduced.Finally,through a comparison of the applicability of the two schemes,the application scenarios and constraint conditions of both are summarized.