Monitoring system for agronomic variables based in WSN technology on cassava crops

Caicedo-Ortiz, José; De-la-Hoz-Franco, Emiro; Morales-Ortega, Roberto Cesar; Piñeres-Espitia, Gabriel; Niño, Harold Arturo Combita; Estevez, Francisco J.; Cama-Pinto, Alejandro

doi:10.1016/j.compag.2018.01.004

Cited by 36 publications

(23 citation statements)

References 30 publications

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“…Contemporary technologies of growing crops in greenhouse conditions are knowledge-intensive and require continuous improvement of hardware-software tools for computerintegrated monitoring and control of microclimate parameters. This fact is confirmed by relevant scientific publications in the field of digitalization and intellectualization of the modern agricultural sector through the introduction of technologies such as Wireless Sensor Networks and Internet of Things [2][3][4][5].…”

Section: Analysis and Generalization Of Known Resultsmentioning

confidence: 76%

Computer-Integrated Device for Acidity Measurement Monitoring in Greenhouse Conditions with Compensation of Destabilizing Factors

Laktionov¹,

Vovna²,

Kabanets³

et al. 2020

I2M

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The purpose of the article is to improve procedures of computerized monitoring and control of technological processes of growing greenhouse crops by substantiating methods of improving the accuracy of computer-integrated devices for measuring irrigation solution acidity. The article solves the topical scientific and applied problem of determining the conversion characteristics of computerized acidity monitoring systems with integral and differential assessment of their metrological parameters. Theoretical and experimental studies were obtained based on structural-algorithmic synthesis methods for information-measuring systems; methods of mathematical planning of experiments; regression analysis of experimental data and the concept of uncertainty. The computerized acidity meter was implemented on the basis of an ion-selective pH electrode, Arduino microprocessor platform, and ThingSpeak cloud computing service. The relative total boundary uncertainty of acidity measurement is not more than ±1.1 %. Methods of compensating of the random component of uncertainty based on the median filtering algorithm and additional uncertainty from the destabilizing effect of temperature were introduced when implementing the measuring device. Promising areas of priority research to improve the efficiency of the developed computerized acidity meter were justified. The developed device can be used in the complex automation of greenhouse cultivation processes. The developed and implemented measuring tool can be used when planning agricultural operations in greenhouse conditions.

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Section: Analysis and Generalization Of Known Resultsmentioning

confidence: 76%

Computer-Integrated Device for Acidity Measurement Monitoring in Greenhouse Conditions with Compensation of Destabilizing Factors

Laktionov¹,

Vovna²,

Kabanets³

et al. 2020

I2M

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“…Telsiz duyarga ağları (TDA) günümüzde çeşitli alanlarda kullanılmaktadır. Özellikle ziraat alanında, ürün yetiştirme sürecini kolaylaştırmak ve ürün verimini arttırmak için çeşitli TDA sistemleri oluşturulmuştur [1]- [3]. Bunun dışında doğal afet ya da insan hatalarından kaynaklanan felaketlerin önüne geçebilmek için çeşitli TDA sistemleri kullanılmaktadır.…”

Section: Introductionunclassified

A new reconstructable distributed connected dominating set algorithm for extending the lifetime of wireless sensor networks including energy harvester nodes

Haytaoğlu¹,

Güleç²,

Tosun³

2021

Pamukkale J Eng Sci

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Telsiz duyarga ağları sağlık, ziraat, güvenlik ve eğlence gibi çeşitli alanlarda fayda sağlamaktadır. Bu ağları oluşturan düğümlerin enerji kaynaklarının kısıtlı olmasından dolayı enerjilerini etkin bir şekilde kullanmaya yönelik çeşitli çalışmalar gerçekleştirilmiştir. Bu çalışmalarda genel olarak, düğümlerin nöbetleşe sıra ile çalışması ya da sistemde enerji etkin bir iletişim omurgası kullanılması üzerinde durulmuştur. Telsiz duyarga ağlarında iletişim omurgası olarak genellikle bağlı baskın kümeler kullanılmaktadır. Ayrıca, kendi enerjisini üreten düğümlerin de telsiz duyarga ağı sistemlerinde kullanılarak bu sistemlerin yaşam süresinin arttırılması literatürdeki bazı çalışmalarda düşünülmüştür. Bu çalışmada telsiz duyarga sistemlerinin en büyük problemlerinden olan enerji sorunu incelenerek güneş panellerinden kendi enerjisini üretebilen ve üretemeyen düğümlerin olduğu telsiz duyarga ağlarının yaşam sürelerinin arttırılması için yeniden kullanılabilen yeni bir dağıtık bağlı baskın küme algoritması önerilmiştir. Bir düğümde veya düğümlerin bazılarında enerji tükenmesi gerçekleştiğinde belirli bir miktar beklenerek, çalışan düğümlerde bir kopma gerçekleşmemişse önerilen algoritma tekrar çalıştırılmaktadır. Önerilen algoritma, telsiz duyarga ağ alanında sıklıkla kullanılan Cooja tabanlı SensEH benzetim ortamında uygulanmıştır. Önerilen algoritma ve rakip algoritma oluşturulan bağlı baskın kümelerin kullanıldığı sistemlerdeki yaşam süreleri ile algoritmaların zaman ve enerji tüketim maliyeti kapsamlı benzetim analizleri ile incelenmiştir. Elde edilen sonuçlara göre önerilen algoritmanın toplam yaşam süresini rakip algoritmaya göre yaklaşık olarak iki katına çıkartabildiği görülmüştür.Wireless sensor networks are utilized in many different areas such as health, agriculture, security, and entertainment. Since the nodes that constitute wireless sensor networks have limited energy resources, many studies have been carried out on use of their resources in an energy efficient manner. These studies generally focused on duty cycle techniques or constructing energy efficient communication backbones. In wireless sensor systems, the connected dominating sets are generally considered to be used as a backbone. In addition, the deployment of the nodes that harvest their own energy in wireless sensor networks has also been considered in recent studies. In this study, a new distributed algorithm is proposed to construct reusable connected dominating set for wireless networks that possess energy harvester nodes and ordinary nodes which could not harvest its energy. Whenever an energy depletion problem in a node or in more than one node occurs, after a specific interval, the proposed algorithm is re-employed on the alive nodes unless wireless sensor network is disconnected. The proposed algorithm was implemented on SensEH simulation environment based on Cooja which is one of the most commonly used tools in the wireless sensor network area. The new algorithm and the rival algorithm in the area are analyzed with respect to the life...

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“…The wireless sensor networks (WSN) are an integral part of the Internet of Things (IoT) that connects the digital world with the real world [ 1 , 2 ]. It is usually used for low-cost applications in outdoor environments [ 3 , 4 ] to study the variability in the collection of environmental parameters for precision agriculture [ 5 , 6 ], such as temperature, humidity, soil nutrients, etc., deployed in vegetation environments [ 7 , 8 ].…”

Section: Introductionmentioning

confidence: 99%

Empirical Model of Radio Wave Propagation in the Presence of Vegetation inside Greenhouses Using Regularized Regressions

Cama-Pinto

Damas

Holgado-Terriza

et al. 2020

Sensors

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Spain is Europe’s leading exporter of tomatoes harvested in greenhouses. The production of tomatoes should be kept and increased, supported by precision agriculture to meet food and commercial demand. The wireless sensor network (WSN) has demonstrated to be a tool to provide farmers with useful information on the state of their plantations due to its practical deployment. However, in order to measure its deployment within a crop, it is necessary to know the communication coverage of the nodes that make up the network. The multipath propagation of radio waves between the transceivers of the WSN nodes inside a greenhouse is degraded and attenuated by the intricate complex of stems, branches, leaf twigs, and fruits, all randomly oriented, that block the line of sight, consequently generating a signal power loss as the distance increases. Although the COST235 (European Cooperation in Science and Technology - COST), ITU-R (International Telecommunications Union—Radiocommunication Sector), FITU-R (Fitted ITU-R), and Weisbberger models provide an explanation of the radio wave propagation in the presence of vegetation in the 2.4 GHz ICM band, some significant discrepancies were found when they are applied to field tests with tomato greenhouses. In this paper, a novel method is proposed for determining an empirical model of radio wave attenuation for vegetation in the 2.4 GHz band, which includes the vegetation height as a parameter in addition to the distance between transceivers of WNS nodes. The empirical attenuation model was obtained applying regularized regressions with a multiparametric equation using experimental signal RSSI measurements achieved by our own RSSI measurement system for our field tests in four plantations. The evaluation parameters gave 0.948 for R2, 0.946 for R2 Adj considering 5th grade polynomial (20 parameters), and 0.942 for R2, and 0.940 for R2 Adj when a reduction of parameters was applied using the cross validation (15 parameters). These results verify the rationality and reliability of the empirical model. Finally, the model was validated considering experimental data from other plantations, reaching similar results to our proposed model.

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Monitoring system for agronomic variables based in WSN technology on cassava crops

Cited by 36 publications

References 30 publications

Computer-Integrated Device for Acidity Measurement Monitoring in Greenhouse Conditions with Compensation of Destabilizing Factors

Computer-Integrated Device for Acidity Measurement Monitoring in Greenhouse Conditions with Compensation of Destabilizing Factors

A new reconstructable distributed connected dominating set algorithm for extending the lifetime of wireless sensor networks including energy harvester nodes

Empirical Model of Radio Wave Propagation in the Presence of Vegetation inside Greenhouses Using Regularized Regressions

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