带温度补偿的便携式声波土壤水分检测仪的研制

IF 5.9 2区 工程技术 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC
Qian Wang;Yong Ye;Zhe Ma;Juan Xia;Xiaoting Lin;Meiqi Zhang;Zikang Zheng;Jun Li
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引用次数: 0

摘要

土壤水分是影响农业生产的关键因素之一。有效、准确地获取土壤水分对确保农业活动的正常进行至关重要。然而,传统的SMC检测方法无法满足现场环境中水分检测的实时性、高效性、高性价比、高可靠性等基本要求。本研究的目的是评估具有温度补偿的便携式声波探测装置在田间环境中土壤湿度检测的有效性。利用脉冲传输方法,考虑温度对声速测量的影响,研制了一套土壤声测量与数据采集系统。温度梯度为$5~^{\circ}$ C - $40~^{\circ}$ C,同时保持相对湿度为50%。实验分析了SMC与土壤温度、声速之间的关系,并利用多变量非线性回归建立了温度补偿SMC声学预测模型。通过硬件选型、软件开发和系统集成,研制成功了具有温度补偿功能的便携式声波土壤湿度检测装置。为了评估该装置的性能,对其声速探测性能、防水能力和有效探测范围进行了测试。在土壤温度为$9.0~ $ {\circ}$ C ~ $24.5~ $ {\circ}$ C的果园中进行了25 d的田间试验,结果表明,该装置的SMC测量值与烘箱干燥方法的平均相对误差为5.64%。当SMC大于0.275 g/g时,最大相对误差为3.91%。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Development of a Portable Acoustic Soil Moisture Detection Device With Temperature Compensation
Soil moisture is one of the key factors in agricultural production. Efficient and accurate acquisition of the soil moisture content (SMC) is essential for ensuring the proper functioning of agricultural activities. However, conventional SMC detection methods fail to meet the basic requirements for moisture detection in field environments, including real-time efficiency, cost-effectiveness, and reliability. The aim of this study was to evaluate the effectiveness of a portable acoustic detection device with temperature compensation for soil moisture detection in field environments. A soil acoustic measurement and data acquisition system was developed in this study, utilizing the pulse transmission method while considering the impact of temperature on acoustic velocity measurements. A temperature gradient of $5~^{\circ }$ was set within a range of $5~^{\circ }$ C– $40~^{\circ }$ C while maintaining a relative humidity of 50%. The relationships among the SMC, soil temperature, and acoustic velocity were experimentally analyzed, and a temperature-compensated SMC acoustic prediction model was developed via multivariable nonlinear regression. Through hardware selection, software development, and system integration, a portable acoustic soil moisture detection device with temperature compensation was successfully developed. To assess the performance of the device, tests were conducted to evaluate its acoustic velocity detection performance, waterproof capability, and effective detection range. A 25-day field experiment was carried out in an orchard, during which the soil temperature ranged from $9.0~^{\circ }$ C to $24.5~^{\circ }$ C, and the results indicated that the average relative error between the device’s SMC measurements and the oven-drying method was 5.64%. When the SMC exceeded 0.275 g/g, the maximum relative error was 3.91%.
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来源期刊
IEEE Transactions on Instrumentation and Measurement
IEEE Transactions on Instrumentation and Measurement 工程技术-工程:电子与电气
CiteScore
9.00
自引率
23.20%
发文量
1294
审稿时长
3.9 months
期刊介绍: Papers are sought that address innovative solutions to the development and use of electrical and electronic instruments and equipment to measure, monitor and/or record physical phenomena for the purpose of advancing measurement science, methods, functionality and applications. The scope of these papers may encompass: (1) theory, methodology, and practice of measurement; (2) design, development and evaluation of instrumentation and measurement systems and components used in generating, acquiring, conditioning and processing signals; (3) analysis, representation, display, and preservation of the information obtained from a set of measurements; and (4) scientific and technical support to establishment and maintenance of technical standards in the field of Instrumentation and Measurement.
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