Academic literature on the topic 'Soil moisture sensors'

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Journal articles on the topic "Soil moisture sensors"

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Sui, Ruixiu, Horace C. Pringle, and Edward M. Barnes. "Soil Moisture Sensor Test with Mississippi Delta Soils." Transactions of the ASABE 62, no. 2 (2019): 363–70. http://dx.doi.org/10.13031/trans.12886.

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Abstract. One of the methods for irrigation scheduling is to use sensors to measure the soil moisture level in the plant root zone and apply water if there is a water shortage for the plants. The measurement accuracy and reliability of the soil moisture sensors are critical for sensor-based irrigation management. This study evaluated the measurement accuracy and repeatability of the EC-5 and 5TM soil volumetric water content (SVWC) sensors, the MPS-2 and 200SS soil water potential (SWP) sensors, and the 200TS soil temperature sensor. Six 183 cm × 183 cm × 71 cm wooden compartments were built i
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Yerolkar, Prof D. J., Atharva More, Sahil Pardeshi, Prathamesh Tikhe, and Neeraj Pawar. "Soil Moisture Detector." International Journal for Research in Applied Science and Engineering Technology 12, no. 3 (2024): 1115–20. http://dx.doi.org/10.22214/ijraset.2024.59014.

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Abstract: Soil Moisture is directly related to the amount of irrigation in agriculture and influences the yield of crops. Accordingly, a soil moisture sensor is an important tool for measuring soil moisture content. In this study, the previous research conducted in recent 2-3 decades on soil moisture sensors was reviewed and the principles of commonly used soil moisture sensors and their various applications were summarized. Furthermore, the advantages, disadvantages, and influencing factors of various measurement methods employed were compared and analyzed. The improvements presented by sever
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Nandi, Rajesh, and Dev Shrestha. "Assessment of Low-Cost and Higher-End Soil Moisture Sensors across Various Moisture Ranges and Soil Textures." Sensors 24, no. 18 (2024): 5886. http://dx.doi.org/10.3390/s24185886.

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The accuracy and unit cost of sensors are important factors for a continuous soil moisture monitoring system. This study compares the accuracy of four soil moisture sensors differing in unit costs in coarse-, fine-, and medium-textured soils. The sensor outputs were recorded for the VWC, ranging from 0% to 50%. Low-cost capacitive and resistive sensors were evaluated with and without the external 16-bit analog-to-digital converter ADS1115 to improve their performances without adding much cost. Without ADS1115, using only Arduino’s built-in analog-to-digital converter, the low-cost sensors had
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Dong, Younsuk, Steve Miller, and Lyndon Kelley. "Performance Evaluation of Soil Moisture Sensors in Coarse- and Fine-Textured Michigan Agricultural Soils." Agriculture 10, no. 12 (2020): 598. http://dx.doi.org/10.3390/agriculture10120598.

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Soil moisture content is a critical parameter in understanding the water movement in soil. A soil moisture sensor is a tool that has been widely used for many years to measure soil moisture levels for their ability to provide nondestructive continuous data from multiple depths. The calibration of the sensor is important in the accuracy of the measurement. The factory-based calibration of the soil moisture sensors is generally developed under limited laboratory conditions, which are not always appropriate for field conditions. Thus, calibration and field validation of the soil moisture sensors
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Bavitra, Leo Anaris Sakti, Dimas Saputra, Zaki Ihwan, Baharudin, and Muhammad Abiyyu Alharits. "Studi Komparasi Sensor Kelembapan Tanah Menggunakan ESP32." JURAL RISET RUMPUN ILMU TEKNIK 4, no. 1 (2025): 685–91. https://doi.org/10.55606/jurritek.v4i1.5292.

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Soil moisture is a crucial factor in agriculture that affects plant growth and crop productivity. In modern agricultural systems, accurate soil moisture monitoring is essential for optimizing water usage and enhancing the efficiency of automatic irrigation systems. This study aims to develop an Internet of Things (IoT)-based soil moisture monitoring system and evaluate the performance of three types of soil moisture sensors: Soil Moisture FC-28, Capacitive Soil Moisture Sensor, and Soil Moisture Hygrometer Module Sensor. The evaluation compares the accuracy and effectiveness of each sensor in
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An, Jing Qiang, Lin Rong Shi, and Feng Wei Zhang. "The Design of the Istallation Device for Soil Moisture Sensor." Advanced Materials Research 1049-1050 (October 2014): 1193–95. http://dx.doi.org/10.4028/www.scientific.net/amr.1049-1050.1193.

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For soil excavated a section is needed to dig in the direction of gravity artificial when soil moisture sensor is mounted against the general, and the size of cross section is proportional to the depth of buried sensors, making it time-consuming, and the original soil moisture distribution structure is destroyed, resulting in error between the original soil moisture and measured soil moisture profile is larger. A installation device for soil moisture sensor was designed in this paper, which can efficiently, rapidly, conveniently installation soil moisture sensors in the layered soil profile, a
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Hari, N. "Laboratory Evaluation of Soil Moisture Sensors for Precision Irrigation in Agriculture." International Journal of Environment and Climate Change 14, no. 8 (2024): 321–32. http://dx.doi.org/10.9734/ijecc/2024/v14i84353.

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Water is essential for agricultural production and food security, making efficient water use critical. Accurate measurement of soil moisture is vital for scheduling irrigation, ensuring that crops receive the right amount of water at the right time. This prevents both under- and over-irrigation, conserving water and maximizing crop production. Currently, digital soil moisture sensors are used for their accuracy and instant measurement capabilities. The soil moisture sensor's functionality was evaluated through observations of four Capacitive soil moisture sensors 1.2 (SMS A, B, C, D) at variou
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Clutter, Melissa, and Kendall DeJonge. "Optimizing Soil Moisture Sensor Depth for Irrigation Management Using Universal Multiple Linear Regression." Journal of the ASABE 65, no. 4 (2022): 739–49. http://dx.doi.org/10.13031/ja.15044.

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HighlightsUniversal multiple linear regression (uMLR) was used to optimize soil moisture sensor depth.Eight years of soil moisture data from various water treatments were tested, then validated.The best single observation depth for irrigation management is at 30 cm below soil surface.A single calibrated soil moisture sensor may be used to aggregate soil water deficit in the root zone.Abstract. Soil moisture sensors are valuable tools in irrigation management, but due to soil spatial variability it is challenging for point-based sensors to characterize the entire soil water profile. Universal m
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Sui, Ruixiu. "Irrigation Scheduling Using Soil Moisture Sensors." Journal of Agricultural Science 10, no. 1 (2017): 1. http://dx.doi.org/10.5539/jas.v10n1p1.

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Irrigation is required to ensure crop production. Practical methods of use sensors to determine soil water status are needed in irrigation scheduling. Soil moisture sensors were evaluated and used for irrigation scheduling in humid region of the Mid-South US. Soil moisture sensors were installed in soil at depths of 15 cm, 30 cm, and 61 cm belowground. Soil volumetric water content was automatically measured by the sensors in a time interval of an hour during the crop growing season. Soil moisture data were wirelessly transferred onto internet through a wireless sensor network (WSN) so that th
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Chen, Zhangzhong, Zheng, et al. "Data-Driven Calibration of Soil Moisture Sensor Considering Impacts of Temperature: A Case Study on FDR Sensors." Sensors 19, no. 20 (2019): 4381. http://dx.doi.org/10.3390/s19204381.

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Commercial soil moisture sensors have been widely applied into the measurement of soil moisture content. However, the accuracy of such sensors varies due to the employed techniques and working conditions. In this study, the temperature impact on the soil moisture sensor reading was firstly analyzed. Next, a pioneer study on the data-driven calibration of soil moisture sensor was investigated considering the impacts of temperature. Different data-driven models including the multivariate adaptive regression splines and the Gaussian process regression were applied into the development of the cali
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Dissertations / Theses on the topic "Soil moisture sensors"

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El-Bishti, Magda Bashier. "Determination of soil moisture using dielectric soil moisture sensors : effect of soil temperature and implication for evaporation estimates." Thesis, University of Reading, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.487102.

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The reliability and accuracy of several sensors that employ the relationship between dielectric constant and soil moisture constant, e, in particular capacitance sensors were investigated. Results obtained from laboratory examinations ,of a Theta probe, TP, selected as a representative model for capacitance sensors, suggested that the sensor output was affected by temperature variations, electrical conductivity levels, spatial variation in sample bulk density as well as the level of compaction of the soil surrounding the sensor's rods. Detailed in situ e data collected usmg capacitance sensors
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K, C. Milan. "Applicability of Soil Moisture Sensors in Determination of Infiltration Rate." University of Toledo / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1509217475534338.

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Ali, Sajjad. "Evaluation of the soil moisture sensors for irrigation scheduling of strawberries." Thesis, McGill University, 2009. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=66964.

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Horticultural producers are in need of efficient and timely techniques for determining crop water requirements. The question of when and how much to irrigate, termed irrigation scheduling, is particularly important for high-value crops such as strawberries (Fragaria ananassa). During the growing season, irrigation scheduling decisions are influenced by climatic variables such as rainfall, temperature and humidity, which directly impact soil moisture levels. A field study was therefore conducted to evaluate two soil moisture sensors for irrigation scheduling of commercial stra
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Lindell, David Brian. "Arctic Sea Ice Classification and Soil Moisture Estimation Using Microwave Sensors." BYU ScholarsArchive, 2016. https://scholarsarchive.byu.edu/etd/6153.

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Spaceborne microwave sensors are capable of estimating various properties of many geophysical phenomena, including the age and extent of Arctic sea ice and the relative soil moisture over land. The measurement and classification of such geophysical phenomena are used to refine climate models, localize and predict drought, and better understand the water cycle. Data from the active Ku-band scatterometers, the Quick Scatterometer (QuikSCAT), and the Oceansat-2 Scatterometer (OSCAT), are here used to classify areas of first-year and multiyear Arctic sea ice using a temporally adaptive threshold
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Proulx, Sophie. "Evaluation of the performance of soil moisture sensors in laboratory-scale lysimeters." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/MQ62826.pdf.

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Zreda, Marek, Michael H. Cosh, Tyson E. Ochsner, et al. "The Soil Moisture Active Passive Marena, Oklahoma, In Situ Sensor Testbed (SMAP-MOISST): Testbed Design and Evaluation of In Situ Sensors." Soil Sci Soc Amer, 2016. http://hdl.handle.net/10150/621354.

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In situ soil moisture monitoring networks are critical to the development of soil moisture remote sensing missions as well as agricultural and environmental management, weather forecasting, and many other endeavors. These in situ networks utilize a variety of sensors and installation practices, which confounds the development of a unified reference database for satellite calibration and validation programs. As part of the Soil Moisture Active Passive Mission, the Marena, Oklahoma, In Situ Sensor Testbed (SMAP-MOISST) was initiated to perform inter-comparisons and study sensor limitations. Soil
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Dias, Ivo Miguel Lourenço. "Caracterização de parâmetros da qualidade do solo através da análise de satélite de observação da terra." Master's thesis, Universidade de Évora, 2021. http://hdl.handle.net/10174/29812.

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A realização de mapas da condutividade elétrica aparente do solo, associados ao tipo textural do mesmo é usual, contudo, este é um procedimento que requer equipamento especializado e mão-de-obra para realizar a operação, aspetos que o tornam dispendioso. O uso de imagens de satélite das missões Sentinel 1 e 2, para observação da superfície terrestre, podem contornar essa situação, disponibilizando continuamente informação. Face ao exposto, este estudo tem como objetivo principal avaliar a capacidade dos satélites de observação da Terra para descrever as propriedades do solo. Com amostras textu
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Cruz, Tadeu Macryne Lima. "EstratÃgia de monitoramento e automaÃÃo em sistemas de irrigaÃÃo utilizando dispositivos de comunicaÃÃo em redes de sensores sem fio." Universidade Federal do CearÃ, 2009. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=5219.

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Conselho Nacional de Desenvolvimento CientÃfico e TecnolÃgico<br>O objetivo deste trabalho foi desenvolver estratÃgias de monitoramento e automaÃÃo em sistemas de irrigaÃÃo utilizando sensores capacitivos FDR para coletar dados do conteÃdo de Ãgua no solo atravÃs de uma Rede de Sensores Sem Fio (RSSF). Os sensores capacitivos FDR foram desenvolvidos no Departamento de Engenharia AgrÃcola (DENA) da UFC. Foram utilizados neste trabalho 14 sensores capacitivos FDR e um deles passou por um processo de calibraÃÃo em laboratÃrio, onde foi sobreposta uma lÃmpada de 100 watts na amostra de solo indefo
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Roque, Wellington. "Desenvolvimento de um multi-sensor eletronico para medida da umidade, temperatura e condutividade eletrica do solo." [s.n.], 2008. http://repositorio.unicamp.br/jspui/handle/REPOSIP/259314.

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Orientador: Jose Antonio Siqueira Dias<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Eletrica e de Computação<br>Made available in DSpace on 2018-08-11T13:05:25Z (GMT). No. of bitstreams: 1 Roque_Wellington_M.pdf: 6339203 bytes, checksum: 18872eccdf7c33ab07b778e59d8d3d08 (MD5) Previous issue date: 2008<br>Resumo: A utilização de sensores é indispensável para a coleta de dados na Agricultura de Precisão, pois possibilita um estudo mais aprofundado e preciso do solo. A proposta deste trabalho é o desenvolvimento de um multi-sensor (MS) para realizar a m
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Johnson, Peter Morris St Clair. "The Design of an Integrated Soil Moisture Sensor for Agriculture." Thesis, Griffith University, 2007. http://hdl.handle.net/10072/367660.

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This thesis details the design and testing of several soil moisture sensors for use in agricultural applications. The thesis concentrates on capacitive sensors measuring water content by the change in capacitance of two electrodes in direct contact with the soil water, although several other sensor types are investigated. Two electrodes placed in the soil will have a characteristic complex impedance that depends on the sensor configuration, soil structure and soil components. The impedance measured is dependant also on the frequency of the signal used for the measurement. As the frequency is l
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Books on the topic "Soil moisture sensors"

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Connellan, Geoff. Water Use Efficiency for Irrigated Turf and Landscape. CSIRO Publishing, 2013. http://dx.doi.org/10.1071/9780643106888.

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Achieving high water use efficiency in maintaining turf, trees and landscape areas is a core responsibility of open space managers. Water Use Efficiency for Irrigated Turf and Landscape provides a logical and scientifically sound approach to irrigation in urban areas in Australia. It is based on green space delivering defined outcomes using the principles of water sensitive urban design and irrigation efficiency.&#x0D; The book covers all stages of the water pathway – from the source to delivery into the plant root zone. Major topics include system planning, estimating water demand, water qual
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IAEA. Soil Moisture Mapping with a Portable Cosmic Ray Neutron Sensor. International Atomic Energy Agency, 2018.

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Book chapters on the topic "Soil moisture sensors"

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Del Dottore, Emanuela, Alessio Mondini, Davide Bray, and Barbara Mazzolai. "Miniature Soil Moisture Sensors for a Root-Inspired Burrowing Growing Robot." In Biomimetic and Biohybrid Systems. Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-38857-6_15.

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AbstractThis paper shows the implementation of miniature sensors for soil moisture measurement and their integration in a root-inspired burrowing growing robot. Three kinds of sensors are combined to estimate the water content in soil: a resistivity sensor composed of two brass electrodes, a commercial air humidity sensor interfaced with the soil by a filter membrane of PTFE with polyester scrim, and an RGB sensor used for visible reflectance spectroscopy. We show their integration and embeddability in a burrowing growing robot based on additive manufacturing with a 4 cm probe diameter. The mu
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Logsdon, Sally D., Odemari S. Mbuya, and Teferi Tsegaye. "Bulk Density and Soil Moisture Sensors." In Soil Science Step-by-Step Field Analysis. American Society of Agronomy and Soil Science Society of America, 2015. http://dx.doi.org/10.2136/2008.soilsciencestepbystep.c16.

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Vostrukhin, Aleksandr, Maksim Mastepanenko, Igor Vorotnikov, and Elena Vakhtina. "Multichannel Measuring Converter for Monitoring Soil Moisture with Capacitive Sensors." In Lecture Notes in Networks and Systems. Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-72556-2_2.

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Chai, Fang-Chien, Chun-Chih Lo, Mong-Fong Horng, and Yau-Hwang Kuo. "Remaining Useful Life Estimation-A Case Study on Soil Moisture Sensors." In Intelligent Information and Database Systems. Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-54430-4_32.

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Kremenskoy, Vladimir, Ielizaveta Dunaeva, Aishe Dzhaparova, and Valentina Popovich. "Laboratory Testing and Calibration of Soil Moisture Sensors on Southern Chernozems." In XV International Scientific Conference “INTERAGROMASH 2022”. Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-21219-2_207.

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Ali, Murad, Hammad Ullah Khan Yousafzai, and Khan Zaib Jadoon. "Development, Calibration, and Field Validation of an Internet of Things Based Real-Time Smart Soil Moisture Monitoring System Using Capacitive Soil Moisture Sensors." In Advances in Engineering Research. Atlantis Press International BV, 2024. https://doi.org/10.2991/978-94-6463-591-1_6.

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Pithadiya, Bhavesh, Harikrishna Parikh, Jatin Savaliya, et al. "An IoT Based Greenhouse Control System Employing Multiple Sensors, for Controlling Soil Moisture, Ambient Temperature and Humidity." In Proceedings of the 2nd International Conference on Electronics, Biomedical Engineering, and Health Informatics. Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-1804-9_31.

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Gani, Mina Naidah, Hepi Ludiyati, Rifa Hanifatunnisa, and Eril Mozef. "Analysis of Data Communication and Soil Moisture and pH Sensors in Soil Monitoring System using LoRa Technology: Performance Evaluation and Distance Measurement." In Proceedings of the International Conference on Applied Science and Technology on Engineering Science 2023 (iCAST-ES 2023). Atlantis Press International BV, 2024. http://dx.doi.org/10.2991/978-94-6463-364-1_66.

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Al Jassar, Hala, Peter Petrov, Ali Al Hemoud, Abdullah Al-Enezi, and Abeer Alsaleh. "Applications of Remote Sensing in Kuwait." In The Geology of Kuwait. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-16727-0_10.

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AbstractSatellite Remote Sensing can provide a valuable source of information in different applications and is considered an important tool for disaster management and support for decision-making in the state of Kuwait. This is especially valid for the cloudless atmosphere of Arabia. In this chapter, some examples related to geology ideas are presented. The application of satellite remote sensing techniques using both passive and active sensors is presented over Kuwait desert and marine. This includes academic studies of soil moisture, land subsidence, and operational monitoring of recent flas
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Hanieh, Ahmed Abu, and Afif Akel Hasan. "Olive Sector Integrated Artificial Intelligence and Modern Technologies: Model for Palestine." In Lecture Notes in Mechanical Engineering. Springer Nature Switzerland, 2025. https://doi.org/10.1007/978-3-031-77429-4_1.

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AbstractOlive sector in Palestine suffers from serious problems starting from cultivation process passing through oil extraction process ending with final treatment. Most of the processes depend on old traditional ways away from modern technologies. The main focus of this paper is to put forward some basis and roadmap for implementing artificial intelligence and new technological components in olive sector processes. The hilly nature of Palestine prevents using heavy duty mechanical instruments for harvesting. Most of olive trees are planted on hilly terrains hence requiring the use of light w
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Conference papers on the topic "Soil moisture sensors"

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Crasto, Vernon S., William R. Eisenstadt, and David P. Arnold. "Wirelessly Powered Buried Soil Moisture Sensor System." In 2024 IEEE SENSORS. IEEE, 2024. https://doi.org/10.1109/sensors60989.2024.10784551.

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Ahmad, Muhammad, Hamza Rafique, and Abubakr Muhammad. "Exploring the Application of Machine Learning for Soil Moisture Forecasting over In-situ Soil Moisture Sensors Network." In 2024 Horizons of Information Technology and Engineering (HITE). IEEE, 2024. https://doi.org/10.1109/hite63532.2024.10777226.

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van den Hoogen, Jurgen, Dan Hudson, and Martin Atzmueller. "Graph Signal Processing Unearths the Best Locations for Soil Moisture Sensors." In 2024 International Conference on Machine Learning and Applications (ICMLA). IEEE, 2024. https://doi.org/10.1109/icmla61862.2024.00142.

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Zainal Abidin, Intan Sorfina, Muhamad Zuhairi Basari, Noramalina Abdullah, Nor Azizah Mohd Yusoff, Aiffah Mohd Ali, and Zuraini Dahari. "Case Study in Urban Community Farming: IoT-Based Soil Moisture Monitoring System." In 2024 5th International Conference on Smart Sensors and Application (ICSSA). IEEE, 2024. https://doi.org/10.1109/icssa62312.2024.10788561.

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Das, Adrija, Anushka Bhandari, Goshidhaa M. S., R. Karthika, Soubhik Bagchi, and Pritam Bhowmik. "Advanced Error Characterization and Polynomial Calibration of Soil Moisture Sensors: A Comprehensive Comparative Study." In 2024 IEEE Silchar Subsection Conference (SILCON). IEEE, 2024. https://doi.org/10.1109/silcon63976.2024.10910799.

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Zhang, JianWei, Lei Zhang, Cangxu Feng, Kang Li, and Jianhua Feng. "Intelligent monitoring of soil moisture in agricultural fields based on polymer fibre Bragg grating sensors." In Second International Conference on Intelligent Transportation and Smart Cities (ICITSC 2025), edited by Yaxian Li, Vitaliy Mezhuyev, and Zongzhi Li. SPIE, 2025. https://doi.org/10.1117/12.3073771.

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Ding, Sheng, John Sanchez, Aidan Jackson, et al. "Wireless Power Transfer Through Soil for Energizing an Underground Soil Moisture Sensor." In 2022 IEEE Sensors. IEEE, 2022. http://dx.doi.org/10.1109/sensors52175.2022.9967363.

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Farooqui, Muhammad F., and Ahmed A. Kishk. "Low-Cost 3D-Printed Wireless Soil Moisture Sensor." In 2018 IEEE Sensors. IEEE, 2018. http://dx.doi.org/10.1109/icsens.2018.8589802.

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Aldaba, A. Lopez, D. Lopez-Torres, M. A. Campo-Bescós, et al. "Microstructured optical fiber sensor for soil moisture measurements." In Optical Fiber Sensors. OSA, 2018. http://dx.doi.org/10.1364/ofs.2018.wf41.

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Nikolov, Georgi Todorov, Elitsa Emilova Gieva, Boyanka Marinova Nikolova, and Ivelina Nikolaeva Ruskova. "Soil Moisture Measurement with Flexible Sensors." In 2020 XXIX International Scientific Conference Electronics (ET). IEEE, 2020. http://dx.doi.org/10.1109/et50336.2020.9238304.

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Reports on the topic "Soil moisture sensors"

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Clausen, Jay, Susan Frankenstein, Jason Dorvee, et al. Spatial and temporal variance of soil and meteorological properties affecting sensor performance—Phase 2. Engineer Research and Development Center (U.S.), 2021. http://dx.doi.org/10.21079/11681/41780.

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An approach to increasing sensor performance and detection reliability for buried objects is to better understand which physical processes are dominant under certain environmental conditions. The present effort (Phase 2) builds on our previously published prior effort (Phase 1), which examined methods of determining the probability of detection and false alarm rates using thermal infrared for buried-object detection. The study utilized a 3.05 × 3.05 m test plot in Hanover, New Hampshire. Unlike Phase 1, the current effort involved removing the soil from the test plot area, homogenizing the mat
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Tor-ngern, Pantana. โครงการค่าประสิทธิภาพการใช้น้ำของพันธุ์ไม้ริมถนนเพื่อการจัดการพื้นที่สีเขียวในเขตเมือง : รายงานวิจัยฉบับสมบูรณ์. Chulalongkorn University, 2019. https://doi.org/10.58837/chula.res.2019.19.

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Urban trees provide several ecosystem services, yet they are less studied compared to trees in natural ecosystems. Investigating ecophysiological responses of different tree species to seasonal conditions and drought will help determine which would succeed in urban conditions. Here, we examined water use characteristics of common species in Bangkok, Thailand: Pterocarpus indicus (Pi), Swietenia macrophylla (Sm) and Lagerstroemia speciose (Ls), with different phenology, under seasonal variations and soil drying. Thirty small trees were potted and irrigated to ≥80% of the field capacity (0FC) of
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Dasberg, Shmuel, Jan W. Hopmans, Larry J. Schwankl, and Dani Or. Drip Irrigation Management by TDR Monitoring of Soil Water and Solute Distribution. United States Department of Agriculture, 1993. http://dx.doi.org/10.32747/1993.7568095.bard.

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Drip irrigation has the potential of high water use efficiency, but actual water measurement is difficult because of the limited wetted volume. Two long-term experiments in orchards in Israel and in California and several field crop studies supported by this project have demonstrated the feasibility of precise monitoring of soil water distribution for drip irrigation in spite of the limited soil wetting. Time Domain Reflectometry (TDR) enables in situ measurement of soil water content of well defined small volumes. Several approaches were tried in monitoring the soil water balance in the field
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Quinn, Meghan. Geotechnical effects on fiber optic distributed acoustic sensing performance. Engineer Research and Development Center (U.S.), 2021. http://dx.doi.org/10.21079/11681/41325.

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Distributed Acoustic Sensing (DAS) is a fiber optic sensing system that is used for vibration monitoring. At a minimum, DAS is composed of a fiber optic cable and an optic analyzer called an interrogator. The oil and gas industry has used DAS for over a decade to monitor infrastructure such as pipelines for leaks, and in recent years changes in DAS performance over time have been observed for DAS arrays that are buried in the ground. This dissertation investigates the effect that soil type, soil temperature, soil moisture, time in-situ, and vehicle loading have on DAS performance for fiber opt
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Eylander, John, Michael Lewis, Maria Stevens, John Green, and Joshua Fairley. An investigation of the feasibility of assimilating COSMOS soil moisture into GeoWATCH. Engineer Research and Development Center (U.S.), 2021. http://dx.doi.org/10.21079/11681/41966.

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This project objective evaluated the potential of improving linked weather-and-mobility model predictions by blending soil moisture observations from a Cosmic-ray Soil Moisture Observing System (COSMOS) sensor with weather-informed predictions of soil moisture and soil strength from the Geospatial Weather-Affected Terrain Conditions and Hazards (GeoWATCH). Assimilating vehicle-borne COSMOS observations that measure local effects model predictions of soil moisture offered potential to produce more accurate soil strength and vehicle mobility forecast was the hypothesis. This project compared soi
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Nestleroth. L52298 Augmenting MFL Tools With Sensors that Assess Coating Condition. Pipeline Research Council International, Inc. (PRCI), 2009. http://dx.doi.org/10.55274/r0010396.

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External coatings are routinely used to protect transmission pipelines from corrosion; however, coatings may degrade or disbond over time enabling corrosion to occur. Transmission pipeline operators often use magnetic flux leakage (MFL) in-line inspection tools to detect metal loss corrosion defects. Rather than finding the cause of a problem, failure of the coating within a corrosive environment, MFL corrosion surveys only find the result of the problem, corrosion defects that may permanently alter the pressure carrying capacity of the pipeline. Stress corrosion cracking (SCC) can be detected
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Quarry, Mike. PR-462-143703-R01 Development and Evaluation of Guided Wave Structural Health Monitoring for Buried Pipe. Pipeline Research Council International, Inc. (PRCI), 2019. http://dx.doi.org/10.55274/r0011594.

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Excavations to inspect buried piping are often costly and risk damaging other plant assets during the digging. Some utilities have used permanently installed guided wave sensors to monitor piping condition and reduce the excavations. The project that is the subject of this report has two objectives-to evaluate the current state-of-the-art and to create a test bed for vendors to improve their technology and data analysis algorithms. Understanding the state-of-the-art will enable utilities to effectively use guided wave structural health monitoring in support of their underground piping aging ma
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Brydie, Dr James, Dr Alireza Jafari, and Stephanie Trottier. PR-487-143727-R01 Modelling and Simulation of Subsurface Fluid Migration from Small Pipeline Leaks. Pipeline Research Council International, Inc. (PRCI), 2017. http://dx.doi.org/10.55274/r0011025.

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The dispersion and migration behavior of hydrocarbon products leaking at low rates (i.e. 1bbl/day and 10 bbl/day) from a pipeline have been studied using a combination of experimental leakage tests and numerical simulations. The focus of this study was to determine the influence of subsurface engineered boundaries associated with the trench walls, and the presence of a water table, upon the leakage behavior of a range of hydrocarbon products. The project numerically modelled three products including diesel, diluted bitumen (dilbit) and gasoline; which were chosen to span a range of fluid types
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