测控技术2012，Vol.31Issue(7)：110-113,4.
基于LabVIEW的钢轨阻抗特性测量系统
Rail Impedance Measurement System Based on LabVIEW
摘要
Abstract
The modified multi-features impulse track circuit is dedicated to solving shunt-fault problems confronted by traditional track circuit installed in station. Rail is a primary component of this track circuit. Analysis of rail impedance characteristics under continuous different frequency signals is very meaningful for electrical characteristics analysis and optimal design of this track circuit. However, the existing measurement systems for impedance characteristics can be only applicable to single-point frequency case. In the framework of Lab-VIEW, a new system with professional soundcard is developed for achieving impedance measurement of rail or other metal conductors under sweep frequency signals. It can be characterized by multichannel data acquisition, high accuracy and wide frequency range. The system structure and function are introduced from designs of hardware and software. Finally, some measuring examples illustrate predominance of its performance.关键词
高速铁路/轨道电路/钢轨阻抗测量/LabVIEW/专业声卡/专业功放Key words
high speed railway/track circuit/rail impedance measurement/LabVIEW/professional soundcard/professional amplifier分类
信息技术与安全科学引用本文复制引用
李元,丁万虎,王实,王智新..基于LabVIEW的钢轨阻抗特性测量系统[J].测控技术,2012,31(7):110-113,4.基金项目
国家科技支撑计划资助项目(2009BAG12A08) （2009BAG12A08）
国家自然科学基金资助项目(61174119,61034006,60774070,61004070) （61174119,61034006,60774070,61004070）
中国博士后基金资助项目(20100470353) （20100470353）
