Precision irrigation system based on detection of crop water stress with acoustic emission technique

Shifeng Yang, Pei Lu, L. Okushima, S. Sase
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引用次数: 6

Abstract

A computerized and automatic precision irrigation system based on estimation of crops water stress with acoustic emission (AE) technique was developed in the modern greenhouse. The system can automatically acquire the real-time AE signals and transpiration data from tomato crop respectively with AE sensor and electronic balance, The system also can automatically obtain environment parameters of the greenhouse, such as temperature, air humidity, the density of the sunlight and CO/sub 2/ density, and then according to an optimum control algorithm, the system automatically carried out precision irrigation. The experiment results have shown that AE events increase gradually with the increase of transpiration speed of crops to some extent. The system has the potential to implement optimum and automatic irrigation based on the information acquired from the crops with acoustic emission, but the system is easily to be affected by noise of environment.
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基于声发射技术检测作物水分胁迫的精准灌溉系统
基于声发射技术估算作物水分胁迫,在现代温室中开发了一套计算机化、自动化的精确灌溉系统。该系统通过声发射传感器和电子天平分别自动获取番茄作物的实时声发射信号和蒸腾数据,并自动获取温室温度、空气湿度、日照密度和CO/sub 2/密度等环境参数,然后根据最优控制算法自动进行精准灌溉。试验结果表明,随着作物蒸腾速度的增加,声发射事件在一定程度上逐渐增加。该系统具有利用声发射信息实现作物优化灌溉和自动灌溉的潜力,但该系统容易受到环境噪声的影响。
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Research on non-linearity rectification of sensor systems Independent component analysis and its application in the fingerprint image preprocessing Precision irrigation system based on detection of crop water stress with acoustic emission technique Measurement of resonant microbeam pressure sensors A new structure for measuring the thermal conductivity of thin film
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