A portable multi-function weight-in-motion (WIM) sensor system based on fiber Bragg grating (FBG) technology

Zhang, Hongtao; Wei, Zhanxiong; Zhao, Qida; Guan, L.; Zou, Jilin; Lu, Fan; Yang, Shangming; Song, Dongcao; Recine, G; Cui, Hong‐Liang

doi:10.1117/12.786204

Cited by 3 publications

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Previous relative work has been published in [7][8]. Due to the strict requirements of the short measurement time (around 30 ms for vehicle in 15 mph due to the limited dimension of sensor heads), outside working temperature (normally 5°C ~40°C) and portability of whole system, the high-speed, temperature insensitive and highreliability are most desired in developing this system.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

High speed, high performance, portable, dual-channel, optical fiber Bragg grating (FBG) demodulator

Zhang

Wei

et al. 2009

SPIE Proceedings

Self Cite

View full text Add to dashboard Cite

A high speed, high performance, portable, dual-channel, optical Fiber Bragg Grating demodulator based on fiber FabryPérot tunable filter (FFP-FT) is reported in this paper. The high speed demodulation can be achieved to detect the dynamical loads of vehicles with speed of 15 mph. However, the drifts of piezoelectric transducer (PZT) in the cavity of FFP-FT dramatically degrade the stability of system. Two schemes are implemented to improve the stability of system. Firstly, a temperature control system is installed to effectively remove the thermal drifts of PZT. Secondly, a scheme of changing the bias voltage of FFP-FT to restrain non-thermal drifts has been realized at lab and will be further developed to an automatic control system based on microcontroller. Although this demodulator is originally used in Weight-InMotion (WIM) sensing system, it can be extended into other aspects and the schemes presented in this paper will be useful in many applications.

show abstract

Section: Introductionmentioning

confidence: 99%

“…Our current researches of WIM sensing system based on FBG technology is developed to measure the total weight, the distribution of weight of vehicle, the distance of wheels axles and distance between left and right wheels in high speed (up to 15 mph) [6][7][8]. Previous relative work has been published in [7][8].…”

Section: Introductionmentioning

confidence: 99%