Jiamin Wang, Zhen Li, Jiqiang Wang. All-optical fiber miniature soil moisture content sensor[J]. Infrared and Laser Engineering, 2022, 51(3): 20210299
- Infrared and Laser Engineering
- Vol. 51, Issue 3, 20210299 (2022)
Fig. 1. Sensing system structure diagram
Fig. 2. Probe structure of all optical fiber soil moisture content sensor
Fig. 3. Basic configuration diagram of the experimental
Fig. 4. Change of soil moisture probe temperature with time
Fig. 5. Temperature characteristic value fitting curve
Fig. 6. Comparison of measurement errors of soil moisture content before and after temperature compensation
Fig. 7. Temperature variation diagram of sensing probe in different types of soil samples
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Table 1. Parameters of soil moisture content test platform
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Table 2. Results of different moisture content measurement methods
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