OCDMA-based sensor network for monitoring construction sites affected by vibrations

Farzad Pour Rahimian, Saleh Seyedzadeh, Ivan Glesk

Research output: Contribution to journalArticle

Abstract

Due to the progressive demand for more accurate structural health monitoring of large-scale facilities, e.g. modern high-speed railways and bridges, there is a huge uptake in the development of optical sensor networks (OSN), which can help mitigate the issues with conventional electric sensors, especially their sensitivity to electromagnetic interferences and larger sizes. The existing fibre optic infrastructures are not widely used by OSNs, due to the lack of appropriate multiplexing techniques. Aiming at addressing the implementation issues of optical sensors in urban areas, this study proposes an efficient and cost-effective system for supporting the vibration sensing of unequally distributed points. The pro- posed system takes the advantages of spectral amplitude encoding optical code division multiple access (SAC-OCDMA) technique, in providing differentiated services in the physical layer with varying code weights. This system utilises more wavelengths (i.e. higher power) to the farthest sensing points in order to retrieved vibration signals, properly. The mechanism of SAC for OSN is elaborated using simulation results including the impact of transmission distance and the procedure of allocating codes to different zones. These results indicate the suitability of the proposed system to be implemented in existing fibre optic infrastructures. Moreover, the numerical analysis shows a high capacity of the sensor network deploying SAC. The proposed system addresses the implementation issues in optically sensing of structures distributed in urban areas.
LanguageEnglish
Pages299-317
Number of pages19
JournalJournal of Information Technology in Construction
Volume24
Publication statusPublished - 13 Jun 2019

Fingerprint

Optical sensors
Sensor networks
Fiber optics
Monitoring
Structural health monitoring
Signal interference
Multiplexing
Code division multiple access
Numerical analysis
Wavelength
Sensors
Costs

Keywords

  • structural health monitoring
  • vibration sensing
  • optical sensing
  • optical code division multiple access
  • unequally distributed sensor nodes

Cite this

@article{4180fe9f39134f9ba04cc55b0839c385,
title = "OCDMA-based sensor network for monitoring construction sites affected by vibrations",
abstract = "Due to the progressive demand for more accurate structural health monitoring of large-scale facilities, e.g. modern high-speed railways and bridges, there is a huge uptake in the development of optical sensor networks (OSN), which can help mitigate the issues with conventional electric sensors, especially their sensitivity to electromagnetic interferences and larger sizes. The existing fibre optic infrastructures are not widely used by OSNs, due to the lack of appropriate multiplexing techniques. Aiming at addressing the implementation issues of optical sensors in urban areas, this study proposes an efficient and cost-effective system for supporting the vibration sensing of unequally distributed points. The pro- posed system takes the advantages of spectral amplitude encoding optical code division multiple access (SAC-OCDMA) technique, in providing differentiated services in the physical layer with varying code weights. This system utilises more wavelengths (i.e. higher power) to the farthest sensing points in order to retrieved vibration signals, properly. The mechanism of SAC for OSN is elaborated using simulation results including the impact of transmission distance and the procedure of allocating codes to different zones. These results indicate the suitability of the proposed system to be implemented in existing fibre optic infrastructures. Moreover, the numerical analysis shows a high capacity of the sensor network deploying SAC. The proposed system addresses the implementation issues in optically sensing of structures distributed in urban areas.",
keywords = "structural health monitoring, vibration sensing, optical sensing, optical code division multiple access, unequally distributed sensor nodes",
author = "{Pour Rahimian}, Farzad and Saleh Seyedzadeh and Ivan Glesk",
year = "2019",
month = "6",
day = "13",
language = "English",
volume = "24",
pages = "299--317",
journal = "Journal of Information Technology in Construction",
issn = "1874-4753",

}

OCDMA-based sensor network for monitoring construction sites affected by vibrations. / Pour Rahimian, Farzad; Seyedzadeh, Saleh; Glesk, Ivan.

In: Journal of Information Technology in Construction, Vol. 24, 13.06.2019, p. 299-317.

Research output: Contribution to journalArticle

TY - JOUR

T1 - OCDMA-based sensor network for monitoring construction sites affected by vibrations

AU - Pour Rahimian, Farzad

AU - Seyedzadeh, Saleh

AU - Glesk, Ivan

PY - 2019/6/13

Y1 - 2019/6/13

N2 - Due to the progressive demand for more accurate structural health monitoring of large-scale facilities, e.g. modern high-speed railways and bridges, there is a huge uptake in the development of optical sensor networks (OSN), which can help mitigate the issues with conventional electric sensors, especially their sensitivity to electromagnetic interferences and larger sizes. The existing fibre optic infrastructures are not widely used by OSNs, due to the lack of appropriate multiplexing techniques. Aiming at addressing the implementation issues of optical sensors in urban areas, this study proposes an efficient and cost-effective system for supporting the vibration sensing of unequally distributed points. The pro- posed system takes the advantages of spectral amplitude encoding optical code division multiple access (SAC-OCDMA) technique, in providing differentiated services in the physical layer with varying code weights. This system utilises more wavelengths (i.e. higher power) to the farthest sensing points in order to retrieved vibration signals, properly. The mechanism of SAC for OSN is elaborated using simulation results including the impact of transmission distance and the procedure of allocating codes to different zones. These results indicate the suitability of the proposed system to be implemented in existing fibre optic infrastructures. Moreover, the numerical analysis shows a high capacity of the sensor network deploying SAC. The proposed system addresses the implementation issues in optically sensing of structures distributed in urban areas.

AB - Due to the progressive demand for more accurate structural health monitoring of large-scale facilities, e.g. modern high-speed railways and bridges, there is a huge uptake in the development of optical sensor networks (OSN), which can help mitigate the issues with conventional electric sensors, especially their sensitivity to electromagnetic interferences and larger sizes. The existing fibre optic infrastructures are not widely used by OSNs, due to the lack of appropriate multiplexing techniques. Aiming at addressing the implementation issues of optical sensors in urban areas, this study proposes an efficient and cost-effective system for supporting the vibration sensing of unequally distributed points. The pro- posed system takes the advantages of spectral amplitude encoding optical code division multiple access (SAC-OCDMA) technique, in providing differentiated services in the physical layer with varying code weights. This system utilises more wavelengths (i.e. higher power) to the farthest sensing points in order to retrieved vibration signals, properly. The mechanism of SAC for OSN is elaborated using simulation results including the impact of transmission distance and the procedure of allocating codes to different zones. These results indicate the suitability of the proposed system to be implemented in existing fibre optic infrastructures. Moreover, the numerical analysis shows a high capacity of the sensor network deploying SAC. The proposed system addresses the implementation issues in optically sensing of structures distributed in urban areas.

KW - structural health monitoring

KW - vibration sensing

KW - optical sensing

KW - optical code division multiple access

KW - unequally distributed sensor nodes

UR - https://www.itcon.org/

M3 - Article

VL - 24

SP - 299

EP - 317

JO - Journal of Information Technology in Construction

T2 - Journal of Information Technology in Construction

JF - Journal of Information Technology in Construction

SN - 1874-4753

ER -