FPGA-based Fused Smart Sensor for Real-Time Plant-Transpiration Dynamic Estimation

作     者：Roberto Millan-Almaraz, Jesus de Jesus Romero-Troncoso, Rene Gerardo Guevara-Gonzalez, Ramon Miguel Contreras-Medina, Luis Valentin Carrillo-Serrano, Roberto Alfredo Osornio-Rios, Roque Duarte-Galvan, Carlos Angel Rios-Alcaraz, Miguel Torres-Pacheco, Irineo 

作者机构：Univ Autonoma Queretaro CA Ingn Biosistemas Div Investigac & Posgrado Fac Ingn Queretaro 76010 Qro Mexico Univ Guanajuato HSPdigital CA Telemat DICIS Salamanca 36885 Gto Mexico Univ Autonoma Queretaro HSPdigital CA Mecatron Fac Ingn San Juan Del Rio 76807 Qro Mexico Univ Autonoma Queretaro Div Investigac & Posgrado Fac Ingn Queretaro 76010 Qro Mexico 

出 版 物：《SENSORS》 (传感器)

年 卷 期：2010年第10卷第9期

页      面：8316-8331页

核心收录：

学科分类：0710[理学-生物学] 071010[理学-生物化学与分子生物学] 0808[工学-电气工程] 07[理学] 0804[工学-仪器科学与技术] 0703[理学-化学] 

基　　金：CONACYT [207684  FOMIX-QRO-2008-CO2-101490  FOMIX-QRO-2008-CO2-102123] 

主　　题：smart sensor transpiration stomatal conductance precision agriculture phytomonitoring water stress field programmable gate array 

摘      要：Plant transpiration is considered one of the most important physiological functions because it constitutes the plants evolving adaptation to exchange moisture with a dry atmosphere which can dehydrate or eventually kill the plant. Due to the importance of transpiration, accurate measurement methods are required;therefore, a smart sensor that fuses five primary sensors is proposed which can measure air temperature, leaf temperature, air relative humidity, plant out relative humidity and ambient light. A field programmable gate array based unit is used to perform signal processing algorithms as average decimation and infinite impulse response filters to the primary sensor readings in order to reduce the signal noise and improve its quality. Once the primary sensor readings are filtered, transpiration dynamics such as: transpiration, stomatal conductance, leaf-air-temperature-difference and vapor pressure deficit are calculated in real time by the smart sensor. This permits the user to observe different primary and calculated measurements at the same time and the relationship between these which is very useful in precision agriculture in the detection of abnormal conditions. Finally, transpiration related stress conditions can be detected in real time because of the use of online processing and embedded communications capabilities.