研究目的
Investigating the effectiveness of a fiber Bragg grating-based wind erosion monitoring system in measuring wind erosion passively, in real time, and over long distances.
研究成果
The proposed fiber Bragg grating-based wind erosion monitoring system demonstrates effective performance in measuring wind erosion passively, in real time, and over long distances. The system's design meets the criteria for field measurement applications, with an average sand collection efficiency of 92.2% at wind speeds of 9-18m/s.
研究不足
The system's performance at lower wind speeds (6m/s) shows slightly lower sand collection efficiency. The study suggests that the system's design could be optimized for a wider range of wind speeds.
1：Experimental Design and Method Selection:
The system includes a sand sampler designed with shunt-hedging and cyclone-separation methods and a weighting sensor based on fiber Bragg grating (FBG) technology. The design rationale focuses on reducing wind interference and enabling real-time, passive measurement of wind erosion.
2：Sample Selection and Data Sources:
The experiment uses a wind tunnel to simulate different wind speeds and measures the sand collection efficiency and deceleration ratio of the sand sampler.
3：List of Experimental Equipment and Materials:
The system comprises a sand sampler, a weighting sensor based on FBG, and a demodulation system.
4：Experimental Procedures and Operational Workflow:
The sand sampler is placed in a wind tunnel, and sand collection efficiency and deceleration ratios are measured under various wind speeds. The FBG-based weighting sensor measures the amount of sand collected by counting the number of bucket flips.
5：Data Analysis Methods:
The data is analyzed to determine the sand collection efficiency and the effectiveness of the deceleration mechanism.
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