传感技术学报2024，Vol.37Issue(12)：2177-2186,10.DOI:10.3969/j.issn.1004-1699.2024.12.025
基于频域反射法的平行螺旋线拉伸测量分析
Analysis of Parallel Helix Tension Measurement Based on Frequency Domain Reflection Method
摘要
Abstract
Distributed measurement of underground rock and soil deformation is an important part of geological hazard monitoring.By using parallel helical transmission lines as sensors and combining frequency domain reflection(FDR)analysis,continuous distributed measurement of larger deformation quantities is enabled.It is known that the characteristic impedance of the parallel helical transmission line increases with the increase of tensile force.Through FDR,the measurement and location of the tensile point can be de-termined.The principle of FDR measurement of tensile deformation in parallel helical transmission lines is explained.In response to practical application issues of FDR in parallel helical transmission lines,the influence of sweep range,frequency,and number of sam-pling points on measurement results is analyzed through experimental data.Different incident signals under different circumstances are also measured,factors that may affect measurement results are identified and analyzed,and a better measurement scheme is selected.The proposed method is used to simulate the actual use of parallel helical transmission lines and obtain actual measurement data,which is analyzed for better understanding.关键词
地质灾害监测/频域反射法/分布式测量/平行螺旋传输线/阻抗变换Key words
Geological hazard monitoring/frequency domain reflection(FDR)/distributed measurement/parallel helical transmission lines分类
信息技术与安全科学引用本文复制引用
李朝鹏,李青,陈华民,徐夏捷,苗鑫雨..基于频域反射法的平行螺旋线拉伸测量分析[J].传感技术学报,2024,37(12):2177-2186,10.基金项目
国家重点研发计划课题项目(2022YFC3003403) （2022YFC3003403）
浙江省重点研发计划项目(2021C03016) （2021C03016）
