铁路通信信号工程技术2026，Vol.23Issue(6)：47-57,11.DOI:10.3969/j.issn.1673-4440.2026.06.007
基于CBI站场叠加预发电码化技术研究
Research on Pre-Overlap Coding Technology Based on CBI Stations and Yards
摘要
Abstract
This paper studies and designs a scheme for the pre-overlap coding circuit based on CBI stations and yards,targeting at the issues of premature code transmission and limited applicability to EMU(Electric Multiple Unit)in the main-line coding equipment at railway stations and yards of conventional lines equipped with computer based interlocking(CBI)together with relay coding equipment and superimposed coding equipment(with ZPW-2000 series taken as an example).This scheme improves the code sending box arrangement to address the premature code transmission problem,and enhances the circuit design of transfer relay(CJ)to achieve the pre-overlap coding function.Additionally,it uses the 25.7 Hz(SP code)low-frequency information to enable the carrier frequency switching function,which not only reduces the driver's manual interventions and enhances the track circuit's anti-interference capability,but also address the train braking problem triggered by data mismatch between onboard and wayside equipment for EMUs operating at stations and yards.Through a systematic analysis of key parameters such as the de-energization time of track circuit relay(GJ)and the time delay between signal recognition and reception by the onboard equipment,the reasonable code sending time for SP code is determined.In view of the logical driving capability of CBI,and the configurations and driving logics of relays such as ZCJ,CJ,ZPJ and FGPJ are optimized,to enable the pre-overlap coding function on siding tracks and main-line routes.关键词
计算机联锁/叠加电码化/预发码/ZPW-2000/机车信号/动车组/轨道电路/继电编码/SP 码(25.7 Hz)Key words
Computer Based Interlocking(CBI)/overlap coding/pre-overlap coding/ZPW-2000/cab signaling/Electric Multiple Unit(EMU)/track circuit/relay coding/SP code(25.7 Hz)分类
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解峰..基于CBI站场叠加预发电码化技术研究[J].铁路通信信号工程技术,2026,23(6):47-57,11.基金项目
中国国家铁路集团有限公司科技研究开发计划重点课题项目(N2023G081) （N2023G081）
