集成电路与嵌入式系统2025，Vol.25Issue(1)：67-73,7.DOI:10.20193/j.ices2097-4191.2024.0055
基于双通道的全电子相敏接收器研究与设计
Research and design of all-electronic phase-sensitive receiver based on dual-channel
摘要
Abstract
In order to improve the measurement accuracy and resolution of the phase-sensitive receiver,an all-electronic phase-sensitive receiver based on the all-phase Fast Fourier Transform(apFFT)algorithm is designed.The hardware is a two-take-two dual-channel structure,and the process is synchronized by two machines,and the calculation results are output after comparison.The DDS generator is used to build a test platform for simulating and verifying the function of the scheme,and the on-site track circuit combination frame is connected to the field test.The experimental results show that the design can accurately detect the occupancy status of the train in the track section,distinguish the random noise and harmonic signal on the rail.It has strong anti-interference capabilities,with a phase difference measurement error of no more than 0.3°.This scheme is an electronic improvement of the existing microelectronic phase-sen-sitive track circuit receiver,featuring a simple circuit.The phase difference calculation is completely completed by software,resulting in the high reliability.It can be used for the coded or non-coded sections of the 25 Hz phase-sensitive track circuits powered by 50 Hz alter-nating current traction.关键词
二取二双通道/apFFT/25 Hz相敏轨道电路/相位差Key words
two-take-two dual-channel structure/apFFT/25 Hz phase-sensitive track circuit/phase difference分类
计算机与自动化引用本文复制引用
刁艳美,陈美玲,易靓..基于双通道的全电子相敏接收器研究与设计[J].集成电路与嵌入式系统,2025,25(1):67-73,7.基金项目
南京工业大学浦江学院校级课题(njpj2023-1-14). （njpj2023-1-14）
