Detection and Monitoring Technologies of Bridge Cable Force and Disease

2014 ◽  
Vol 919-921 ◽  
pp. 369-372
Author(s):  
Yi Zheng
Keyword(s):  
Cable Structure ◽  
Advantages And Disadvantages ◽  
Detection Technology ◽  
Testing Technology ◽  
Cable Force ◽  
Bridge Cable ◽  
Monitoring Technologies ◽  
Specific Comparison ◽  
External Injury ◽  
Detection Technologies

Investigation is carried out aiming at analysis of bridge cable detection and monitoring. Detection and monitoring technology characteristics are summarized, while technology advantages and disadvantages analyzed. Dynamic detection technology of cable force is used most often. Effects of various factors of this technology are analyzed. Cable structure internal and external injury detection technologies are analyzed. Nondestructive testing technology specific comparison is carried out, the advantages and disadvantages of each technology and application. Nondestructive damage detection technique prospect is presented.

Research on Stray Current Monitoring of Subway Tracks

2012 ◽  
Vol 490-495 ◽  
pp. 2494-2498 ◽  
Author(s):  
Dong Liang Zhang ◽  
Yun Lin Yang
Keyword(s):  
Stray Current ◽  
Advantages And Disadvantages ◽  
Detection Technology ◽  
Monitoring Technologies ◽  
Current Monitoring

This paper analyzes the cause of stray current of subway tracks, classifies the stray current, and explains the hazards. Based on this, the paper also summarizes the advantages and disadvantages of traditional monitoring technologies and current monitoring technologies, and applies the current CIPS detection technology to make simulation in the laboratory. The simulation result well reflects the distribution of stray current on the rail.

Research Situation Analysis of On-line Detection Technology for Power Transformer Winding Deformation

2020 ◽  
Vol 13 (6) ◽  
pp. 823-832
Author(s):  
Zhenhua Li ◽  
Weihui Jiang ◽  
Li Qiu ◽  
Zhenxing Li ◽  
Yanchun Xu
Keyword(s):  
Detection Method ◽  
Theoretical Research ◽  
Line Detection ◽  
Response Analysis ◽  
Advantages And Disadvantages ◽  
Detection Technology ◽  
The Future ◽  
Transformer Winding ◽  
On Line ◽  
Winding Deformation

Background: Winding deformation is one of the most common faults in power transformers, which seriously threatens the safe operation of transformers. In order to discover the hidden trouble of transformer in time, it is of great significance to actively carry out the research of transformer winding deformation detection technology. Methods: In this paper, several methods of winding deformation detection with on-line detection prospects are summarized. The principles and characteristics of each method are analyzed, and the advantages and disadvantages of each method as well as the future research directions are expounded. Finally, aiming at the existing problems, the development direction of detection method for winding deformation in the future is prospected. Results: The on-line frequency response analysis method is still immature, and the vibration detection method is still in the theoretical research stage. Conclusion: The ΔV − I1 locus method provides a new direction for on-line detection of transformer winding deformation faults, which has certain application prospects and practical engineering value.

scholarly journals Research on main insulation defect of cable fusion joint based on IDIP-DR detection technology

2021 ◽  
Vol 2121 (1) ◽  
pp. 012026
Author(s):  
Sanwe Liu ◽  
Fuyong Huang ◽  
Chao Qiu ◽  
Xiaoli Duan ◽  
Chaowen Fang ◽  
...  
Keyword(s):  
Process Control ◽  
High Voltage ◽  
Weak Link ◽  
Effective Means ◽  
Effective Control ◽  
Construction Technology ◽  
Detection Technology ◽  
Insulation Defect ◽  
Testing Technology ◽  
Huge Impact

Abstract The cable connector is the weak link of the electrical part of the cable. Most of the cable breakdown accidents occur at the connector, which will have a huge impact on the safe power supply of the city. In recent years, with the development and maturity of 10 kv cable fusion joint technology, high-voltage cable fusion joint technology is gradually applied in the field, but the key process problems in the production process lack of effective control means. In order to solve such problems, this paper use IDIP - DR digital radiographic testing technology. The key technology of high voltage cable melting joint detection, effectively detect the main insulation problems bubble construction technology. Through the anatomical, proved the accuracy of the test results, for the subsequent company to carry out the weld joint process control provides an effective means of. The causes of defects were analyzed and the corresponding process control suggestions were put forward.

scholarly journals Review of Dissolved Oxygen Detection Technology: From Laboratory Analysis to Online Intelligent Detection

Sensors ◽  
2019 ◽  
Vol 19 (18) ◽  
pp. 3995 ◽  
Author(s):  
Yaoguang Wei ◽  
Yisha Jiao ◽  
Dong An ◽  
Daoliang Li ◽  
Wenshu Li ◽  
...  
Keyword(s):  
Dissolved Oxygen ◽  
Real Time ◽  
Optical Detection ◽  
Oxygen Sensors ◽  
Detection Methods ◽  
Future Research ◽  
Advantages And Disadvantages ◽  
Oxygen Detection ◽  
Detection Technology ◽  
Intelligent Technology

Dissolved oxygen is an important index to evaluate water quality, and its concentration is of great significance in industrial production, environmental monitoring, aquaculture, food production, and other fields. As its change is a continuous dynamic process, the dissolved oxygen concentration needs to be accurately measured in real time. In this paper, the principles, main applications, advantages, and disadvantages of iodometric titration, electrochemical detection, and optical detection, which are commonly used dissolved oxygen detection methods, are systematically analyzed and summarized. The detection mechanisms and materials of electrochemical and optical detection methods are examined and reviewed. Because external environmental factors readily cause interferences in dissolved oxygen detection, the traditional detection methods cannot adequately meet the accuracy, real-time, stability, and other measurement requirements; thus, it is urgent to use intelligent methods to make up for these deficiencies. This paper studies the application of intelligent technology in intelligent signal transfer processing, digital signal processing, and the real-time dynamic adaptive compensation and correction of dissolved oxygen sensors. The combined application of optical detection technology, new fluorescence-sensitive materials, and intelligent technology is the focus of future research on dissolved oxygen sensors.

Development of Detection Research on Fatigue Driving

2014 ◽  
Vol 641-642 ◽  
pp. 813-817
Author(s):  
Xiao Jun He ◽  
Jing Liu ◽  
Zhen Di Yi ◽  
Yuan Quan Yang
Keyword(s):  
Fatigue Testing ◽  
Detection Methods ◽  
Advantages And Disadvantages ◽  
Efficient Detection ◽  
Detection Technology ◽  
Driving Fatigue ◽  
Cost Efficient ◽  
Fatigue Driving ◽  
The Cost ◽  
Fatigue Detection

This paper presents the current most common fatigue-driving detection methods. The advantages and disadvantages of these detection methods are compared with. Moreover, several major products of the current fatigue detection are listed briefly. Furthermore, the development trends of driving-fatigue detection technology are prospected. The author believes that driver fatigue testing standards need to be further clarified and the non-contact detection method of driving-fatigue needs to be developed deeply. Information fusion is an important orientation for driving fatigue and we should design the cost-efficient detection products for fatigue-driving.

Application of Nondestructive Testing in Bridge Structure Quality Detection

2011 ◽  
Vol 66-68 ◽  
pp. 1122-1125
Author(s):  
Jing Xi Chen ◽  
Li Yuan ◽  
Guang Zhang
Keyword(s):  
Nondestructive Testing ◽  
Electromagnetic Induction ◽  
Bridge Structure ◽  
Induction Method ◽  
Actual Measurement ◽  
Structure Quality ◽  
Advantages And Disadvantages ◽  
Quality Detection ◽  
Testing Technology

This paper discusses recent nondestructive testing technology in the application of bridge structure, which focus on common rebound method and electromagnetic induction method. According to the actual measurement problems, the article explains the rebound method and electromagnetic induction method including their advantages and disadvantages, and puts forward the method of avoiding problems.

scholarly journals Assay Concordance between SPA and TR-FRET in High-Throughput Screening

2006 ◽  
Vol 11 (6) ◽  
pp. 606-616 ◽  
Author(s):  
Oliver Von Ahsen ◽  
Anne Schmidt ◽  
Monika Klotz ◽  
Karsten Parczyk
Keyword(s):  
High Throughput ◽  
High Throughput Screening ◽  
Statistical Significance ◽  
Resonance Energy Transfer ◽  
Resonance Energy ◽  
Time Resolved ◽  
Detection Technology ◽  
Significant Difference ◽  
Set Up ◽  
Detection Technologies

High-throughput screening (HTS) of large chemical libraries has become the main source of new lead compounds for drug development. Several specialized detection technologies have been developed to facilitate the cost- and time-efficient screening of millions of compounds. However, concerns have been raised, claiming that different HTS technologies may produce different hits, thus limiting trust in the reliability of HTS data. This study was aimed to investigate the reliability of the authors most frequently used assay techniques: scintillation proximity assay (SPA) and homogeneous time-resolved fluorescence resonance energy transfer (TR-FRET). To investigate the data concordance between these 2 detection technologies, the authors screened a large subset of the Schering compound library consisting of 300,000 compounds for inhibitors of a nonreceptor tyrosine kinase. They chose to set up this study in realistic HTS scale to ensure statistical significance of the results. The findings clearly demonstrate that the choice of detection technology has no significant impact on hit finding, provided that assays are biochemically equivalent. Data concordance is up to 90%. The little differences in hit findings are caused by threshold setting but not by systematic differences between the technologies. The most significant difference between the compared techniques is that in the SPA format, more false-positive primary hits were obtained.

Singular Perturbation Method for Solving Non-Linear Vibration of Stay Cable (I) - Theory Research

2011 ◽  
Vol 147 ◽  
pp. 112-116
Author(s):  
Zhi Hong Ran ◽  
Jun Tong Qu ◽  
Fei He ◽  
Sheng Miao
Keyword(s):  
Singular Perturbation ◽  
Perturbation Method ◽  
Stay Cable ◽  
Linear Vibration ◽  
Singular Perturbation Method ◽  
Cable Structure ◽  
Non Linear ◽  
Cable Force ◽  
Set Up ◽  
Theory Research

In order to solve the difficult in calculating cable vibration, the non-linear dynamic model of cable was set up with geometrical non-linearity. The differential equation was solved using the singular perturbation method. The analytical expression of frequency and form function was deduced. The expression can be widely used for the field of measurement of cable force and identification of parameter in cable structure.

Research on Key Technology of Webpage Tampering Prevention

2014 ◽  
Vol 644-650 ◽  
pp. 2755-2758
Author(s):  
Li Zhao ◽  
Xiang Ling ◽  
Feng Deng
Keyword(s):  
Tampering Detection ◽  
Key Technology ◽  
Detection Technology ◽  
Prevention System ◽  
New Type ◽  
Detection Technologies

Webpage tampering prevention system is a security protection means of website to prevent from hacker’s unauthorized update to webpage. This paper deeply researches the key technology of webpage tampering prevention system, i.e., poll tampering detection technology, core embedding technology and file filtering drive technology, the algorithm of three prevailing tampering prevention detection technologies is realized on the basis of apache platform, they are integrated together to form an exclusive and perfect new type tampering prevention system.

Research Status and Development Trend of Electromagnetic Defect Detection Logging

2013 ◽  
Vol 325-326 ◽  
pp. 856-860
Author(s):  
Zheng Guo Yan ◽  
Lin Zhao
Keyword(s):  
Defect Detection ◽  
Hot Spot ◽  
Development Trend ◽  
Research Status ◽  
Advantages And Disadvantages ◽  
Detection Technology ◽  
Metal Thickness ◽  
Theory Research ◽  
The Development Trend

Electromagnetic defect detection logging can measure multilayer pipeline and provide the information of casing defect and the remaining metal thickness, is the hot spot of the casing defect detection technology. This paper elaborates the advantages and disadvantages of electromagnetic defect detection logging and the present instrument situation, compares technical indexes of several new electromagnetic casing defect detection instruments, summarizes the latest research status, points out the problems existed in current researches and the development trend combining with the instrument index and theory research.

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