Dissertation > Excellent graduate degree dissertation topics show

Research on the Optical Measurement Technique of the Settlement of Subgrade Surface

Author: LiYanFang
Tutor: FengQiBo
School: Beijing Jiaotong University
Course: Optical Engineering
Keywords: Subgrade Surface Settlement Dynamic Displacement Linear CCD Optical Measurement
CLC: U416.1
Type: Master's thesis
Year: 2011
Downloads: 44
Quote: 1
Read: Download Dissertation

Abstract


Heavy-haul train leads to great damage on the subgrade and causes the settlement and deformation, which include the long-period cumulative subsidence and the elastic deformation. To monitor these aspects has a great realistic significance to the maintenance and safe operation of the existing railways.This paper designs an automatic monitoring system, using infrared LED and linear CCD for measuring the surface of subgrade settlement and the dynamic displacement of heavy haul railways. The main contents include three parts:1. For the single-point subgrade settlement’s measuring apparatus, first, introduce its work principle and optical design, and then set up experiment system in the lab for verification. For multi-points measuring, design auto-scanning scheme and grouping network scheme, and discuss their application scope and key technology.2. Combined with the site condition, choose grouping network scheme for building measuring system at three critical sections along the Da-Qin railway. And then give a detailed analysis and corresponding solutions of the factors which have effect on the measurement accuracy.3. By changing the circuit and the optical design in some areas, the apparatus can also be used for measuring the dynamic displacement of the subgrade. After principle testing in the lab, this apparatus has been installed in the railway for measurement.By analyzing the data acquired from long-time monitoring, the regularity and the development trend of the subgrade can be got, which will provide scientific basis for promoting the railway transport capacity and designing new heavy haul railways.

Related Dissertations

  1. The Design and Research of Road Surface Cracks Detection System,TP391.41
  2. Detection system based on virtual instrument stepper motor drive circuit,TH751
  3. Study on Printability of Paper and Its Test Method,TS801
  4. Image shift algorithm based brushless DC motor control and detection system,TM33
  5. DSP Control Linear CCD Achieve Real-time Detection of Seeding Space Uniformity,TP391.41
  6. Study on the Effect of the Composite Foundation Settlement under Foundation Pit Dewatering in West Jinan Railway Station of Beijing-Shanghai High-speed Railway,U231.1
  7. The Research on Optimization for Line-Structured Light Sensor and Camera Calibration,TN948.41
  8. Research on Photoelectric On-line Inspecting Technology in Thickness of Quartz Tube,TP274.4
  9. Based on linear CCD miniature spectrometer design,TH744.1
  10. Pre-sensitized plate flaw detection system,TS803.4
  11. The Development of the Spatial Location Sentence in Children’s Language,H193.1
  12. Research based on the linear CCD image acquisition,TP274.2
  13. Pretension - Limit pneumatic digital piezoelectric ball valve structure and characteristics of,TH134
  14. Study and Experiment on Indirect Detection Methods and Devices of Uniformity in Corn Planting,TP29-AG
  15. Design and Research on the Sensor of Measuring the Small Angle Displacement,TP212
  16. Development of the Instrument for Measuring Chaser Base on USB Interface,TH89
  17. Investigation on Computer Vision Inspection of Laser Welding of Inlet Tube Based on Digital Image Processing Technology,TG441.7
  18. Study on the Defoemation and Structure Adaptability of Subgrade,U213.1
  19. The Study on Portable System for Toxic Gas Measuring on Military Affairs,E929
  20. Research of LED’s Multi-parameters Auto-measure Technology Base on LabVIEW,TN312.8

CLC: > Transportation > Road transport > Road works > Roadbed, pavement engineering > Subgrade
© 2012 www.DissertationTopic.Net  Mobile