Zhou Yi, Yao Weiwei, He Xiangli, Li Tongshu, Wang Shiyu, Han Yu
College of Water Resources and Civil Engineering, China Agricultural University, Beijing, China.
State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu, China.
Front Plant Sci. 2022 Aug 11;13:960103. doi: 10.3389/fpls.2022.960103. eCollection 2022.
Ecological rivers or ecological channels are being widely used. Precious measurement and estimation of flow in irrigation areas are important issues in agricultural engineering. For the sustainable development of vegetation, it is necessary to consider how to use sensors to measure flow more easily in the river to protect both plants and sensors from damage. This article selects smooth channels and ecological channels of different shapes for research and presents a simplified method for arming ultrasonic sensors to obtain channel flow velocity. The flow characteristics along the normal line direction are obtained by theoretical analysis. The method uses the average flow velocity based on the normal to the channel wall to determine the location of the sensors. It combines the flow velocity determined by the sensors with the flow calculation method, thus simplifying the flow estimation steps. Experiments under flow conditions validate the efficacy of the proposed ultrasonic sensor arrangement method. This article not only simplifies the arrangement of sensors in channel flow but also improves the accuracy of the flow measurement method, which is important to promote the construction of ecological channels.
生态河流或生态渠道正在被广泛应用。灌区流量的精确测量与估算在农业工程中是重要问题。为了植被的可持续发展，有必要考虑如何利用传感器更轻松地测量河流中的流量，以保护植物和传感器免受损坏。本文选取不同形状的光滑渠道和生态渠道进行研究，并提出一种简化的布置超声传感器以获取渠道流速的方法。通过理论分析得到沿法线方向的水流特性。该方法利用基于渠道壁法线的平均流速来确定传感器的位置。它将传感器测定的流速与流量计算方法相结合，从而简化了流量估算步骤。水流条件下的实验验证了所提出的超声传感器布置方法的有效性。本文不仅简化了渠道水流中传感器的布置，还提高了流量测量方法的准确性，这对推动生态渠道建设具有重要意义。
