刘鹏, 李小昱, 王为. 基于光电传感器和示踪法的径流流速测量系统的研究[J]. 农业工程学报, 2007, 23(5): 116-120.
    引用本文: 刘鹏, 李小昱, 王为. 基于光电传感器和示踪法的径流流速测量系统的研究[J]. 农业工程学报, 2007, 23(5): 116-120.
    Liu Peng, Li Xiaoyu, Wang Wei. Runoff flow velocity measurement system using photoelectric sensor and tracing method[J]. Transactions of the Chinese Society of Agricultural Engineering (Transactions of the CSAE), 2007, 23(5): 116-120.
    Citation: Liu Peng, Li Xiaoyu, Wang Wei. Runoff flow velocity measurement system using photoelectric sensor and tracing method[J]. Transactions of the Chinese Society of Agricultural Engineering (Transactions of the CSAE), 2007, 23(5): 116-120.

    基于光电传感器和示踪法的径流流速测量系统的研究

    Runoff flow velocity measurement system using photoelectric sensor and tracing method

    • 摘要: 坡面径流流速是决定土壤侵蚀强度的重要因素,也是坡面侵蚀预报模型考虑的关键问题。采用LabVIEW虚拟仪器,开发了一套室内模拟坡面径流流速测量系统,包括试验台、光电传感器、采集卡及测控软件等。系统以泡沫粒子作为示踪粒子,进行了室内模拟坡面径流流速的测试。结果表明,自行设计的试验台能实现水沙循环使用,在0~400 kg/m3含沙量、0~25°坡面的范围内,该测量系统能够测定径流流速,最大相对误差为2.29%,为坡面径流流速的快速、准确测量提供了一种新的有效的方法。

       

      Abstract: The velocity of slope runoff flow is an important parameter to evaluate soil erosion, and it is also a key factor in the soil erosion forecast. A runoff flow velocity measurement system based on LabVIEW was developed, which consisted of test-bed, photoelectric sensor, data acquisition card, measuring and controlling software. The experiment was completed in room simulation test-bed using foam particle as a tracer. The result indicates that the test-bed can recycle water and soil. The system measures runoff flow velocity accurately at the scope of 0~400 kg/m3 and 0~25° of slope gradient. It is found that the greatest relative error of the system is 2.29%. This measurement system provides a new, valid method for speedy and accurate measurement of runoff flow velocity.

       

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