Influence of Cable Length on the Vibrating Wire Sensors Dynamic Measurements

Archives of civil engineering

G. Cieplok^1¹  Ł. Bednarski^3²  W. Karwowski^2³ 

[1] AGH University of Science and Technology, 30-059, Krakow, Poland^1;AGH University of Science and Technology, 30-059, Krakow, Poland^3;Warsaw University of Technology, 00-637, Warsaw, Poland^2

关键词: vibrating wire sensors;    structural health monitoring;    tall ship mast;    bridge;    transient states;    cable connections;    self-oscillation;   

DOI  :  10.2478/ace-2018-0063

学科分类：建筑学

来源: Polska Akademia Nauk * Instytut Podstawowych Problemow Techniki / Polish Academy of Sciences, Institute of Fundamental Technological Research

【 摘 要 】

The hereby paper discusses the influence of cable length on the SHM systems with the use of vibrating wire dynamic measurements. Vibrating wire sensors are mainly used for measuring stable or slowly changing strains, e.g. system installed on Rędziński Bridge in Wroclaw. From some time applications of these sensors for measuring dynamic deformations are becoming popular. Such tests were conducted on STS Fryderyk Chopin. New solutions generate new problems. In this case: the operational stability of systems exciting wire vibrations. The structure of such sensors and the electric cables length has an essential influence on their operations, what is undertaken in the paper. The subject of investigations constitutes the measuring system based on self-exciting impulse exciter, for which impedance parameters of electric cables and of the vibrating wire sensor were the most essential. The mathematical model of the system, experimental verification of the model as well as the results of theoretical analyses at the application of electric cables of various lengths are presented in the paper.

【 授权许可】

Unknown