&lt;title&gt;Fiber optic sensors for traffic monitoring applications&lt;/title&gt;

Suopajaervi, Pekka; Pennala, Riku; Heikkinen, Mikko; Karioja, Pentti; Lyöri, Veijo; Myllylae, Risto A.; Nissilae, Seppo M.; Kopola, Harri; Suni, Heikki

doi:10.1117/12.310611

Cited by 10 publications

(6 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Another type of sensors is based on microbending effect [16], where the attenuation of the optical fiber changes as the car passes. The fibers are stored in special protective housing and installed into the road structure.…”

Section: B Fiber Optic and Optical Sensorsmentioning

confidence: 99%

PDMS-FBG-Based Fiber Optic System for Traffic Monitoring in Urban Areas

et al. 2020

View full text Add to dashboard Cite

This article introduces fiber Bragg grating (FBG) system for monitoring selected traffic flow parameters in urban areas. The system is able to monitor traffic density or speed of cars driving in single lane. The proposed system consists of five Bragg gratings encapsulated in Polydimethylsiloxane polymer and is characterized by easy and inexpensive installation in the milled upper layer of the road covered with an asphalt mixture. The results of first operational tests presented in this study include 3978 passing vehicles of various specifications. The system's vehicle detection success rate is 99.62%. And further, a mean absolute error 1.35 kph and a relative error 2.62% when measuring vehicle speed.

show abstract

Section: B Fiber Optic and Optical Sensorsmentioning

confidence: 99%

PDMS-FBG-Based Fiber Optic System for Traffic Monitoring in Urban Areas

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Another type is a special fiber optic micro-motion sensor [14], which works on the principle of increasing optical fiber attenuation. The fibers are embedded in special protective covers and built into a roadway.…”

Section: Fiber Optic and Optical Sensorsmentioning

confidence: 99%

Portable Optical Fiber Bragg Grating Sensor for Monitoring Traffic Density

et al. 2019

View full text Add to dashboard Cite

The paper examines the development of a portable sensor strip with fiber optic Bragg grating for monitoring urban traffic density up to 80 kph. It contains a 2.5-m-long and a 2-cm-high sensor created from a combination of silicone addition rubber (bicomponent addition silicone rubber) and Bragg grating placed inside a carbon tube. The design of the portable sensor permits traffic density and cars crossings to be monitored and detected in a single lane. The functionality of the sensor was verified in real traffic; the results of this study are based on the detection of 1518 vehicles of different types and sizes. According to the measurements, the sensor is characterized by a high detection rate of 98.946%.

show abstract

“…The pedestrian bridge at the Princeton University Campus has been instrumented by long-gauge FBG strain sensors and by distributed Brillouin Optical Time Domain Analysis (BOTDA) strain sensors during the construction process in order to provide structural health monitoring of the structure, [18]. FBG sensors can be used not only for building construction monitoring but also for real-time monitoring of road and railway traffic [19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Laboratory and In-Situ Testing of Integrated FBG Sensors for SHM for Concrete and Timber Structures

Čápová

Velebil

Včelák

2020

Sensors

View full text Add to dashboard Cite

Long-term structural health monitoring (SHM) plays an important role in the safety of public transport infrastructure such as bridges or tunnels and warns in the event of any emerging problem. This article describes development and testing of system based on fiber Bragg grating (FBG) sensors that can detect changes in strain and temperature. The first phase of the research has been focused on the development of new fiber optic sensors for the monitoring of concrete structures and their investigation in laboratory conditions. The work also shows novel applicability of the same FBG technology for glulam structures. Mechanical loading tests of the concrete beam as well as glulam beam with embedded sensors were carried out. Data measured by developed fiber optic sensors were compared with the readings from reference sensors as well as with the analytically calculated values. The achieved results proved good agreement between the measured data, analytical data and reference methods. In second phase of the research, the pilot installation of the sensors was carried out on the newly constructed prestressed-concrete bridge. The bridge was monitored throughout pre-stressing phase and monitoring continued after the completion of the construction works. Problems with the fragility of the sensors occurred during the measurements, but the obtained results provide a good basis for further improvement of the system.

show abstract

<title>Fiber optic sensors for traffic monitoring applications</title>

Cited by 10 publications

References 0 publications

PDMS-FBG-Based Fiber Optic System for Traffic Monitoring in Urban Areas

PDMS-FBG-Based Fiber Optic System for Traffic Monitoring in Urban Areas

Portable Optical Fiber Bragg Grating Sensor for Monitoring Traffic Density

Laboratory and In-Situ Testing of Integrated FBG Sensors for SHM for Concrete and Timber Structures

Contact Info

Product

Resources

About