Structural Monitoring Systems Based On Fiber Optics State of the Art

2004 ◽  
Vol 88 (2) ◽  
pp. 1-6
Author(s):  
Joan R. Casas ◽  
Paulo J. S. Cruz ◽  
Vicens Villalba
Keyword(s):  
Fiber Optics ◽  
State Of The Art ◽  
Structural Monitoring ◽  
Monitoring Systems

scholarly journals Piezoelectric Sensing Techniques in Structural Health Monitoring: A State-of-the-Art Review

Sensors ◽  
2020 ◽  
Vol 20 (13) ◽  
pp. 3730 ◽  
Author(s):  
Pengcheng Jiao ◽  
King-James I. Egbe ◽  
Yiwei Xie ◽  
Ali Matin Nazar ◽  
Amir H. Alavi
Keyword(s):  
Structural Health Monitoring ◽  
Health Monitoring ◽  
Smart Materials ◽  
State Of The Art ◽  
Piezoelectric Materials ◽  
Great Promise ◽  
Monitoring Systems ◽  
Electromechanical Impedance ◽  
Structural Health ◽  
Health Monitoring Systems

Recently, there has been a growing interest in deploying smart materials as sensing components of structural health monitoring systems. In this arena, piezoelectric materials offer great promise for researchers to rapidly expand their many potential applications. The main goal of this study is to review the state-of-the-art piezoelectric-based sensing techniques that are currently used in the structural health monitoring area. These techniques range from piezoelectric electromechanical impedance and ultrasonic Lamb wave methods to a class of cutting-edge self-powered sensing systems. We present the principle of the piezoelectric effect and the underlying mechanisms used by the piezoelectric sensing methods to detect the structural response. Furthermore, the pros and cons of the current methodologies are discussed. In the end, we envision a role of the piezoelectric-based techniques in developing the next-generation self-monitoring and self-powering health monitoring systems.

AN APPLICATION CONCEPT OF THE FIBRE-OPTICAL TECHNOLOGY IN GEODETIC MONITORING OF ENGINEERING OBJECTS

2017 ◽  
Vol 166 (46) ◽  
pp. 60-74
Author(s):  
Krzysztof Karsznia ◽  
Konrad Podawca
Keyword(s):  
Risk Management ◽  
Large Scale ◽  
State Of The Art ◽  
Monitoring Systems ◽  
Management Approach ◽  
Engineering Structures ◽  
Geoinformation Systems ◽  
Current State ◽  
Modern Engineering ◽  
Integrated Risk

Monitoring of structures and other different field objects undoubtedly belongs to the main issues of modern engineering. The use of technologies making it possible to implement structural monitoring makes it possible to build an integrated risk management approach combining instrumental solutions with geoinformation systems. In the studies of engineering structures, there is physical monitoring mainly used for examining the physical state of the object - so-called SHM ("Structural Health Monitoring"). However, very important role is also played by geodetic monitoring systems (GMS). The progress observed in the field of IT and automatics has opened new possibilities of using integrated systems on other, often large-scale objects. Based on the current state-of-the-art, the article presents the concept of integration approaches of physical and geodetic monitoring systems in order to develop useful guidelines for further construction of an expert risk management system.

Rapid-to-deploy reconfigurable wireless structural monitoring systems using extended-range wireless sensors

2010 ◽  
Vol 6 (5_6) ◽  
pp. 505-524 ◽  
Author(s):  
Junhee Kim ◽  
R. Andrew Swartz ◽  
Jerome P. Lynch ◽  
Jong-Jae Lee ◽  
Chang-Geun Lee
Keyword(s):  
Wireless Sensors ◽  
Structural Monitoring ◽  
Monitoring Systems ◽  
Extended Range

scholarly journals Metodología para diseño de infraestructura de telecomunicaciones para campus universitarios medianos, caso La Dolorosa-UNACH. // Methodology for design of telecommunications infrastructure for medium-sized university campuses, La Dolorosa-UNACH case.

Ciencia Unemi ◽  
2017 ◽  
Vol 10 (23) ◽  
pp. 133
Author(s):  
Juan Carlos Santillán Lima ◽  
Anibal Llanga Vargas ◽  
Gustavo Chafla Altamirano
Keyword(s):  
Fiber Optics ◽  
State Of The Art ◽  
University Campus ◽  
Ict In Education ◽  
Ip Telephony ◽  
High Quality ◽  
University Campuses ◽  
Telecommunications Infrastructure ◽  
Acceptable Quality ◽  
Campus Networks

RESUMEN Se plantea una metodología para el diseño de infraestructuras de telecomunicaciones para campus universitarios medianos, aplicada en el Campus La Dolorosa de la Universidad Nacional de Chimborazo, UNACH, que garantice el acceso a los servicios en línea. Se contó con los diferentes estándares de Fibra Óptica, UTP y WIFI, publicaciones realizadas por la ITU y la IEEE, y el estándar ETSI EG 202 057-4, sobre accesos de calidad en internet, codecs de telefonía IP, artículos sobre TICS en la Educación. Dentro de esta investigación se analizó el estado del arte respecto a infraestructuras de telecomunicaciones, estudió y determinó los servicios que requieren las redes de campus universitarios y el tráfico que genera cada uno de los servicios, y por último el diseño de la infraestructura de telecomunicaciones de acuerdo a los parámetros determinados. Entre los principales resultados se evidenció que existen 1592 dispositivos que en conjunto pueden generar 6537.60Mbps en calidad alta y 100% de usuarios, y 543.28Mbps en calidad aceptable con usuarios concurrentes, y utilizando una red GPON G.987.2 se puede transmitir todo el tráfico generado. Se presenta una metodología para el diseño de infraestructuras de telecomunicaciones óptima para los requerimientos encontrados en el lugar de estudio. ABSTRACT A methodology design of a Telecommunications Infrastructures for medium-sized campus university is proposed, it is applied at La Dolorosa Campus of the “Universidad Nacional de Chimborazo” to guaranteed access to online services. Different standards of Fiber Optics, UTP and WIFI publications made by the ITU and the IEEE, and the ETSI standard EG 202 057-4, on Internet quality accesses, IP telephony codecs, articles on ICT in Education were used. This research analyzed the state of the art regarding telecommunications infrastructures, studied and determined the services required by university campus networks and the traffic generated by each of the services, as well as the design of the telecommunications infrastructure according to the determined parameters. Among the main results it is evident that there are 1592 devices that can generate 6537.60Mbps in high quality and 100% of users, and 543.28Mbps in acceptable quality with concurrent users, and using a GPON network with the standard G.987.2 can transmit all the generated traffic. A methodology is presented for the design of optimal telecommunications infrastructures for the requirements found at the study site.

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