Low-Cost Interrogation of Long-Distance and Multipoint FBG Sensor Using Incoherent-FMCW Optical Ranging System

Hanto, Dwi; Iiyama, Koichi

doi:10.1109/jsen.2019.2959798

Cited by 11 publications

(4 citation statements)

References 20 publications

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“…Traditional fiber grating demodulation methods include the tunable filter method [1] and tunable laser method [2] , which make the sensing system power-consuming [3] and are not conducive to real-time detection due to its manufacturing complexity [4] and thermostatic control of the system light source [5] . An FBG demodulation system using a 1550 nm VCSEL is designed in [6], effectively reducing the manufacturing cost and power consumption of the conventional demodulator.…”

Section: Introductionmentioning

confidence: 99%

A VCSEL-based temperature-adaptive FBG demodulation system

Zhang,

Wang,

Chi

et al. 2024

Fourth International Conference on Sensors and Information Technology (ICSI 2024)

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A temperature-adaptive Fiber Bragg Grating (FBG) demodulation system based on a long-wavelength Vertical-Cavity Surface Emitting laser (VCSEL) is designed to reduce power consumption and cost in this paper. The temperature-adaptive FBG system is described in detail through the sections of VCSEL characterisation and selection, selection of the methane absorption peak wavelength and matching with the laser scanning wavelength range, selection of the fiber grating wavelength and matching with the laser scanning wavelength range, and calculation of the FBG wavelength change. The experimental results show that the system has an effective scanning wavelength range of 3.7 nm in the operating environment of 10~40°C without temperature control, and it has the characteristics of low power consumption, low cost and miniaturisation, which can be used as a sensing node in wireless sensing networks.

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Section: Introductionmentioning

confidence: 99%

A VCSEL-based temperature-adaptive FBG demodulation system

Zhang,

Wang,

Chi

et al. 2024

Fourth International Conference on Sensors and Information Technology (ICSI 2024)

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“…The measurement method and accuracy of laser ranging have a decisive impact on the overall performance of Lidar [12]. At present, the most mainstream methods for laser ranging include triangulation, phase, pulse, and frequency-modulated-continuous-wave (FMCW) methods [13][14][15][16][17][18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

“…This method has high ranging accuracy and can measure the speed of the target using the Doppler effect. However, it requires a large number of optical components, requires high precision of optical components, and the optical system is relatively complex [19][20][21]. In addition, other laser ranging methods include correlation method, timecorrelated-single-photon-counting (TCSPC) method, doublelight-comb method, frequency-comb-interference method, etc [22][23][24][25][26][27][28].…”

Section: Introductionmentioning

confidence: 99%

Laser ranging method based on dual-threshold echo pulse prediction and correction

Liu

Tao

et al. 2023

Meas. Sci. Technol.

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In order to improve the accuracy of pulse laser ranging based on time-of-flight (TOF), this paper proposes a laser ranging method based on double threshold echo pulse prediction correction. By using two high-speed comparators with different thresholds to detect the pulse-echo signal, the initial TOF, pulse width, and edge rate can be obtained. These three parameters are combined with statistical functions to accurately predict the peak position of the echo pulse and obtain the corrected TOF. Finally, the accurate measurement distance is calculated. In the aspect of improving ranging accuracy, this method overcomes the shortcoming that the traditional time-of-flight pulse laser rangefinder has large errors in measuring targets with different reflectivity. This method only uses two high-speed comparators and a monostable trigger more than traditional TOF laser ranging systems. Adding these simple circuits can greatly improve the accuracy of laser ranging. The system structure is simple and the cost is low. Experimental results show that this method can achieve accurate distance measurement, and the measurement error is significantly reduced. This method can greatly improve the performance of the TOF laser rangefinder.

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“…In industry, the FBG is one of the most well-known sensors due to its simple operation and longer lifetime than other sensors. The advantages of FBG sensors are immunity to electromagnetic fields, intrinsic safety, large multiplexing [13], remote sensing [1], wavelength modulation [4], lower cost [5], and great sensitivity [11], [14].…”

Section: Introductionmentioning

confidence: 99%

Characterization of Fiber Bragg Grating (FBG) for Weight Measurement System

Fatimah

Hanto²,

Nugroho

et al. 2023

AMM

Self Cite

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Currently, FBG sensor has been developed in many applications due to its wavelength is sensitive to pressure change. This study aims to analyze the FBG wavelength shifting due to an applied load. In this research, the FBG was placed transversely right in the middle of the specimen that was made by using silicon rubber with thicknesses of 7 mm and 14 mm. The FBG wavelength in the two specimens was investigated by an interrogator when the load is put on to the specimens in three variations: without load, 5 kg, and 10 kg. The result show that the shift of FBG wavelength in specimen with the same thickness is proportional to load increasing. Furthermore, the test specimen with a thickness of 7 mm is more sensitive than 14 mm. Accordingly, the specimen with a thickness of 7 mm is a good option to be used as a weight measurement system.

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Low-Cost Interrogation of Long-Distance and Multipoint FBG Sensor Using Incoherent-FMCW Optical Ranging System

Cited by 11 publications

References 20 publications

A VCSEL-based temperature-adaptive FBG demodulation system

A VCSEL-based temperature-adaptive FBG demodulation system

Laser ranging method based on dual-threshold echo pulse prediction and correction

Characterization of Fiber Bragg Grating (FBG) for Weight Measurement System

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