| 应变电测法监测无缝线路实际锁定轨温的变化 |
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| 引用本文： | 张海,刘冲,王大志,张志新,任同群,梁军生. 应变电测法监测无缝线路实际锁定轨温的变化[J]. 传感器与微系统, 2014, 33(11): 62-64 |
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| 作者姓名： | 张海 刘冲 王大志 张志新 任同群 梁军生 |
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| 作者单位： | 1. 大连理工大学辽宁省微纳米技术及系统重点实验室,辽宁大连,116024
2. 大连理工大学辽宁省微纳米技术及系统重点实验室,辽宁大连116024;大连理工大学精密与特种加工教育部重点实验室,辽宁大连116024 |
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| 基金项目： | 国家“十二五”科技支撑计划资助项目，牵引动力国家重点实验室开放课题项目，中央高校基本科研业务费专项资金资助项目 |
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| 摘 要： | 实际锁定轨温是铁路部门衡量无缝线路钢轨应力状态的标准和轨道安全性的重要指标。采用应变电测法监测实际锁定轨温的变化,通过无线传感器网络的方式采集和传输数据,在1500m长的无缝线路段进行了一个月的在线监测试验,解算出了不同区段实际锁定轨温的变化,其中道岔区附近起点处较大（±10℃左右）,远离道岔区的轨道段变化较小（过渡段为±5℃以内;有砟轨道段为±3℃以内）。经分析和试验验证：应变电测法能够满足铁路部门对该无缝线路段长期在线安全监测的技术要求。
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| 关 键 词： | 无缝线路 锁定轨温 应变电测法 无线传感器网络 在线监测 |
Monitoring of change of real locked temperature of continuous welded rail by strain electrical measuring method |
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| ZHANG Hai,LIU Chong,WANG Da-zhi,ZHANG Zhi-xin,REN Tong-qun,LIANG Jun-sheng. Monitoring of change of real locked temperature of continuous welded rail by strain electrical measuring method[J]. Transducer and Microsystem Technology, 2014, 33(11): 62-64 |
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| Authors: | ZHANG Hai LIU Chong WANG Da-zhi ZHANG Zhi-xin REN Tong-qun LIANG Jun-sheng |
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| Affiliation: | ZHANG Hai, LIU Chong , WANG Da-zhi , ZHANG Zhi-xin, REN Tong-qun , LIANG Jun-sheng ( 1. Key Laboratory for Micro/Nano Technology and System of Liaaning Province, Dalian University of Technology, Dalian 116024, China; 2. Key Laboratory for Precision and Non-Conventional Machining, Ministry of Education, Dalian University of Technology, DaUan 116024, China) |
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| Abstract: | Locked temperature is standard to evaluate railway stress and safety of railway. Strain electrical measuring method is used to monitor fluctuation of the locked temperature, and wireless sensor networks （WSNs） is employed for data acquisition and transmission on-line monitoring test is carried out on 1500 meters-long continuous welded rail section for a month. During the test, the range of locked temperature fluctuation is calculated and compared. The fluctuation is large at the starting point near turnout area which is about ±10 ℃ at the transition section it is small, which is about ±5 ℃ and no more than ±3 ℃ at the ballast section, respectively. The experiment result shows that the strain electrical measuring method meets the requirement for long-term and on-line safety monitoring for continuous welded rail. |
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| Keywords: | continuous welded rail locked temperature strain electrical measuring method wireless sensor networks on-line monitoring |
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