摘要
随着轨道交通智能化进程的持续推进,全数字广播系统成为保障运营安全和信息传递的关键设备。然而,其在实际应用中易受电磁干扰影响。文章以某轨道交通广播系统为研究对象,结合实验室测试与现场实测,评估其抗干扰性能。研究表明,该系统在2.4 GHz频段内受到来自Wi-Fi、蓝牙等设备的显著干扰。采用高增益定向天线和滤波装置,将工作频段调整至1.8 GHz,可有效提升系统运行的稳定性。研究结果为轨道交通广播系统的抗干扰设计与优化提供了理论依据和技术参考。
With the continuous advancement of intelligence in rail transit,fully digital broadcasting systems have become critical equipment for ensuring operational safety and information dissemination.However,their practical application is susceptible to electromagnetic interference.This article takes a specific rail transit broadcasting system as the research subject and evaluates its anti-interference performance by combining laboratory tests and onsite measurements.The study finds that the system experiences significant interference from devices such as Wi-Fi and Bluetooth within the 2.4 GHz frequency band.By employing high-gain directional antennas and filtering devices and adjusting the operating frequency band to 1.8 GHz,the operational stability of the system can be effectively improved.The research results provide a theoretical basis and technical reference for the antiinterference design and optimization of rail transit broadcasting systems.
作者
潘彪
PAN Biao(Guiyang Urban Rail Transit Operation Co.,Ltd.,Guiyang 550000,China)
关键词
轨道交通
全数字广播系统
抗干扰能力评估
电磁兼容性
rail transit
fully digital broadcasting system
anti-interference capability assessment
electromagnetic compatibility
