用于现场实验数据收集的低成本超声波传感器

IF 1.2 4区 农林科学 Q2 AGRICULTURE, MULTIDISCIPLINARY
F. L. Theodoro, A. C. Sanches, T. A. C. D. Cruz, R. Santos, D. L. Flumignan, F. L. F. Jesus
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引用次数: 0

摘要

地表径流监测对全球水资源的可持续管理具有重要意义。获得一种在实地收集数据的实用和廉价的方法可以帮助更好地了解地表径流及其影响,这是管理流域所必需的。本研究旨在阐述超声波传感器在温度变化下的校准曲线,验证物体与传感器之间距离的不准确性,并确定在安装在Parshall水槽上的原位实验中使用低成本传感器的可行性。该试验在巴西MS杜拉多斯州大杜拉多斯联邦大学实验农场进行。数据由12个HC-SR04超声距离传感器采集,这些传感器连接到一个由扩展板组成的数据采集系统,该系统与覆盆子微型计算机相连。传感器校准使用温度数据导致误差校正±8.0毫米的距离读数。另一方面,传感器与控制系统(激光测距仪与水槽标尺)的对比曲线R2值较高(均在0.95以上),说明其使用的可行性,符合受天气条件影响的现场使用规范。本研究证明了超声波传感器的性能作为评估地表径流的新应用的潜力,旨在提出新的径流系数。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Low-cost ultrasonic sensors for in-field experimentation data collection
ABSTRACT Surface runoff monitoring is important for the sustainable management of global water resources. Obtaining a practical and inexpensive method for collecting data in the field can help to better understand surface runoff and its effects, necessary for the management of watersheds. This study sought to elaborate the calibration curves of the ultrasonic sensor due to temperature variability, verifying the inaccuracy of the distance between objects and the sensor, and determining the feasibility of using low-cost sensors in an in-loco experiment installed on Parshall flumes. The experiment was conducted on the Experimental Farm of the Federal University of Grande Dourados, Dourados, MS, Brazil. The data were collected by twelve HC-SR04 ultrasonic distance sensors , which were coupled to a data acquisition system composed of an expansion board connected to a Raspberry minicomputer. Sensor calibration using temperature data resulted in the error correction of ± 8.0 mm of distance reading. On the other hand, the R2 of the comparison curves between sensor and control system (laser distance meter and ruler in the flume) resulted in high values (above 0.95), showing the feasibility of its use and meeting the specifications for use in the field subject to weather conditions. This study demonstrates the performance of ultrasonic sensors as a potential for new application to evaluate surface runoff aiming to propose new runoff coefficients.
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来源期刊
Ciencia E Agrotecnologia
Ciencia E Agrotecnologia 农林科学-农业综合
CiteScore
2.30
自引率
9.10%
发文量
19
审稿时长
6-12 weeks
期刊介绍: A Ciência e Agrotecnologia, editada a cada 2 meses pela Editora da Universidade Federal de Lavras (UFLA), publica artigos científicos de interesse agropecuário elaborados por membros da comunidade científica nacional e internacional. A revista é distribuída em âmbito nacional e internacional para bibliotecas de Faculdades, Universidades e Instituições de Pesquisa.
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