On-line slippage measurement system for optical fiber sensing array

Chunhui Liu; Zhichao Liu; Lixin Yin

doi:10.3788/IRLA20210278

Infrared and Laser Engineering, Volume. 51, Issue 3, 20210278(2022)

On-line slippage measurement system for optical fiber sensing array

Chunhui Liu1...2, Zhichao Liu1,2, and Lixin Yin12 |Show fewer author(s)

Author Affiliations

¹School of Optoelectronic Engineering, Changchun University of Science and Technology, Changchun 130022, China

²Key Laboratory of Optoelectronic Measurement and Control and Optical Information Transmission Technology of Ministry of Education, Changchun University of Science and Technology, Changchun 130022, China

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Figures & Tables(6)

Fig. 1. (a) Overall structure of the system; (b) Direction and speed of the object's movement

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Fig. 2. (a) Slide object trajectory；(b) Strain field distribution of silica gel block

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Fig. 3. (a) Calibration experiment device; (b) The actual points and the predicted points of the static object position

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Fig. 4. (a) Experimental installation of monitoring small ball sports trajectory; (b) Actual trajectory comparison and measurement of small ball sports

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Table 1. Different resolution values of different FBG in different regions

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Table 1. Different resolution values of different FBG in different regions

	k/nm
	Area 1	Area 2	Area 3	Area 4	Area 5	Area 6	Area 7	Area 8	Area 9
FBG1	0.06	0.48	1.92	0.36	0.44	0.29	0.45	1.93	1.07
FBG2	0	0.01	0.54	0.32	0.09	0.76	0.29	0.84	0.45
FBG3	0	0.26	−0.37	0	0	0	0	0	0
FBG4	0.26	0.35	−0.97	−0.46	0.02	0	0	0	1.95
FBG5	0	0	−0.36	0	0.07	−0.46	0	0	0.39
FBG6	0	−0.17	−0.23	0	0	0	0	0	0
FBG7	0	−0.48	−0.20	9	10	0.74	−0.02	−0.04	0
FBG8	0.36	1.96	0.01	−0.19	−0.04	0	0	−0.07	0.04

Table 2. Ball trajectory and prediction trajectory

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Table 2. Ball trajectory and prediction trajectory

Actual location/mm	Section number	Measuring position/mm	Section number	Range error/mm
(14,0)	A₁₁	(12.5,12.5)	A₁₁	12.5
(22,25)	A₁₁	(12.5,12.5)	A₁₁	15.7
(31,50)	A₂₃	(37.5,62.5)	A₂₃	14
(43,75)	A₂₃	(37.5,62.5)	A₂₃	13.6
(57,100)	A₃₅	(62.5,112.5)	A₃₅	13.6
(75,125)	A₄₅	(87.5,137.5)	A₄₅	17.6
(100,150)	A₅₅	(100,150)	A₅₅	0

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Chunhui Liu, Zhichao Liu, Lixin Yin. On-line slippage measurement system for optical fiber sensing array[J]. Infrared and Laser Engineering, 2022, 51(3): 20210278

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