{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,10]],"date-time":"2026-06-10T16:13:04Z","timestamp":1781107984843,"version":"3.54.1"},"reference-count":58,"publisher":"MDPI AG","issue":"10","license":[{"start":{"date-parts":[[2018,10,13]],"date-time":"2018-10-13T00:00:00Z","timestamp":1539388800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>The use of wireless sensor networks (WSNs) in modern precision agriculture to monitor climate conditions and to provide agriculturalists with a considerable amount of useful information is currently being widely considered. However, WSNs exhibit several limitations when deployed in real-world applications. One of the challenges faced by WSNs is prolonging the life of sensor nodes. This challenge is the primary motivation for this work, in which we aim to further minimize the energy consumption of a wireless agriculture system (WAS), which includes air temperature, air humidity, and soil moisture. Two power reduction schemes are proposed to decrease the power consumption of the sensor and router nodes. First, a sleep\/wake scheme based on duty cycling is presented. Second, the sleep\/wake scheme is merged with redundant data about soil moisture, thereby resulting in a new algorithm called sleep\/wake on redundant data (SWORD). SWORD can minimize the power consumption and data communication of the sensor node. A 12 V\/5 W solar cell is embedded into the WAS to sustain its operation. Results show that the power consumption of the sensor and router nodes is minimized and power savings are improved by the sleep\/wake scheme. The power consumption of the sensor and router nodes is improved by 99.48% relative to that in traditional operation when the SWORD algorithm is applied. In addition, data communication in the SWORD algorithm is minimized by 86.45% relative to that in the sleep\/wake scheme. The comparison results indicate that the proposed algorithms outperform power reduction techniques proposed in other studies. The average current consumptions of the sensor nodes in the sleep\/wake scheme and the SWORD algorithm are 0.731 mA and 0.1 mA, respectively.<\/jats:p>","DOI":"10.3390\/s18103450","type":"journal-article","created":{"date-parts":[[2018,10,15]],"date-time":"2018-10-15T03:43:01Z","timestamp":1539574981000},"page":"3450","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":46,"title":["Power Reduction with Sleep\/Wake on Redundant Data (SWORD) in a Wireless Sensor Network for Energy-Efficient Precision Agriculture"],"prefix":"10.3390","volume":"18","author":[{"given":"Haider Mahmood","family":"Jawad","sequence":"first","affiliation":[{"name":"Centre of Advanced Electronic &amp; Communication Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, UKM Bangi, Selangor 43600, Malaysia"},{"name":"Department of Computer Communication Engineering, Al-Rafidain University College, Filastin, Baghdad 10064, Iraq"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9254-2023","authenticated-orcid":false,"given":"Rosdiadee","family":"Nordin","sequence":"additional","affiliation":[{"name":"Centre of Advanced Electronic &amp; Communication Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, UKM Bangi, Selangor 43600, Malaysia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sadik Kamel","family":"Gharghan","sequence":"additional","affiliation":[{"name":"Department of Medical Instrumentation Techniques Engineering, Electrical Engineering Technical College, Middle Technical University, Baghdad, Iraq"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Aqeel Mahmood","family":"Jawad","sequence":"additional","affiliation":[{"name":"Centre of Advanced Electronic &amp; Communication Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, UKM Bangi, Selangor 43600, Malaysia"},{"name":"Department of Computer Communication Engineering, Al-Rafidain University College, Filastin, Baghdad 10064, Iraq"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5509-5735","authenticated-orcid":false,"given":"Mahamod","family":"Ismail","sequence":"additional","affiliation":[{"name":"Centre of Advanced Electronic &amp; Communication Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, UKM Bangi, Selangor 43600, Malaysia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mahmood Jawad","family":"Abu-AlShaeer","sequence":"additional","affiliation":[{"name":"Department of Statistic, Al-Rafidain University College, Filastin, Baghdad 10064, Iraq"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2018,10,13]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"288","DOI":"10.1016\/j.csi.2011.05.004","article-title":"On the design of beacon based wireless sensor network for agricultural emergency monitoring systems","volume":"36","author":"Kim","year":"2014","journal-title":"Comput. Stand. Interfaces"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"29535","DOI":"10.3390\/s151129535","article-title":"A real-time monitoring system of industry carbon monoxide based on wireless sensor networks","volume":"15","author":"Yang","year":"2015","journal-title":"Sensors"},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"11413","DOI":"10.1109\/ACCESS.2017.2716344","article-title":"An autonomous wireless body area network implementation towards iot connected healthcare applications","volume":"5","author":"Wu","year":"2017","journal-title":"IEEE Access"},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"33","DOI":"10.1016\/j.ijdrr.2016.01.001","article-title":"Event monitoring in emergency scenarios using energy efficient wireless sensor nodes for the disaster information management","volume":"16","author":"Erd","year":"2016","journal-title":"Int. J. Disaster Risk Reduct."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1007\/s11227-013-1021-9","article-title":"Wireless sensor networks: A survey on recent developments and potential synergies","volume":"68","author":"Rawat","year":"2014","journal-title":"J. Supercomput."},{"key":"ref_6","first-page":"170","article-title":"Development and evaluation of a wireless sensor network monitoring system in various agricultural environments","volume":"48","author":"Zhu","year":"2014","journal-title":"J. Microw. Power Electromagn. Energy"},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"297","DOI":"10.1016\/j.jclepro.2014.04.036","article-title":"Environmental parameters monitoring in precision agriculture using wireless sensor networks","volume":"88","author":"Srbinovska","year":"2015","journal-title":"J. Clean. Prod."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"73","DOI":"10.1016\/j.biosystemseng.2015.07.005","article-title":"Open source hardware to monitor environmental parameters in precision agriculture","volume":"137","author":"Santano","year":"2015","journal-title":"Biosyst. Eng."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"297","DOI":"10.1016\/j.isatra.2015.12.006","article-title":"Smart greenhouse fuzzy logic based control system enhanced with wireless data monitoring","volume":"61","author":"Azaza","year":"2016","journal-title":"ISA Trans."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"4057","DOI":"10.1016\/j.jclepro.2017.02.197","article-title":"A decision support system based on multisensor data fusion for sustainable greenhouse management","volume":"172","author":"Aiello","year":"2018","journal-title":"J. Clean. Prod."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"154","DOI":"10.1016\/j.compag.2015.02.004","article-title":"Energy efficient automated control of irrigation in agriculture by using wireless sensor networks","volume":"113","author":"Nikolidakis","year":"2015","journal-title":"Comput. Electron. Agric."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"66","DOI":"10.1016\/j.compag.2015.08.011","article-title":"Wireless sensor networks for agriculture: The state-of-the-art in practice and future challenges","volume":"118","author":"Ojha","year":"2015","journal-title":"Comput. Electron. Agric."},{"key":"ref_13","doi-asserted-by":"crossref","unstructured":"Jawad, H.M., Nordin, R., Gharghan, S.K., Jawad, A.M., and Ismail, M. (2017). Energy-efficient wireless sensor networks for precision agriculture: A review. Sensors, 17.","DOI":"10.3390\/s17081781"},{"key":"ref_14","doi-asserted-by":"crossref","unstructured":"Wamuyu, P.K. (2017). A conceptual framework for implementing a wsn based cattle recovery system in case of cattle rustling in kenya. Technologies, 5.","DOI":"10.3390\/technologies5030054"},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"44","DOI":"10.1016\/j.compag.2011.12.008","article-title":"Monitoring and classifying animal behavior using zigbee-based mobile ad hoc wireless sensor networks and artificial neural networks","volume":"82","author":"Nadimi","year":"2012","journal-title":"Comput. Electron. Agric."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"258","DOI":"10.1016\/j.compag.2010.08.014","article-title":"Zigbee-based wireless sensor network localization for cattle monitoring in grazing fields","volume":"74","author":"Young","year":"2010","journal-title":"Comput. Electron. Agric."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"33","DOI":"10.1016\/j.compag.2011.10.013","article-title":"Practical considerations for wireless sensor networks in cattle monitoring applications","volume":"81","author":"Kwong","year":"2012","journal-title":"Comput. Electron. Agric."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"553","DOI":"10.1016\/j.compag.2016.07.011","article-title":"New empirical path loss model for wireless sensor networks in mango greenhouses","volume":"127","author":"Raheemah","year":"2016","journal-title":"Comput. Electron. Agric."},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"19479","DOI":"10.1007\/s11042-015-3150-z","article-title":"Modeling wireless sensor networks radio frequency signal loss in corn environment","volume":"76","author":"Pan","year":"2017","journal-title":"Multimedia Tools Appl."},{"key":"ref_20","doi-asserted-by":"crossref","unstructured":"Srbinovska, M., Dimcev, V., and Gavrovski, C. (2017, January 6\u20138). Energy Consumption Estimation of Wireless Sensor Networks in Greenhouse Crop Production. Proceedings of the 17th International Conference on Smart Technologies, Ohrid, Macedonia.","DOI":"10.1109\/EUROCON.2017.8011235"},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"1628","DOI":"10.1002\/wcm.1229","article-title":"A wireless sensor network for precision agriculture and its performance","volume":"11","author":"Sahota","year":"2011","journal-title":"Wirel. Commun. Mob. Comput."},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"550","DOI":"10.1109\/TWC.2010.120610.100244","article-title":"An energy-efficient communication scheme for wireless networks: A redundant radix-based approach","volume":"10","author":"Sinha","year":"2011","journal-title":"IEEE Trans. Wirel. Commun."},{"key":"ref_23","first-page":"16","article-title":"Simulation and analysis of leach for wireless sensor networks in agriculture","volume":"21","author":"Kamarudin","year":"2016","journal-title":"Int. J. Sens. Netw."},{"key":"ref_24","unstructured":"De la Concepcion, A.R., Stefanelli, R., and Trinchero, D. (2014, January 10\u201313). A Wireless Sensor Network Platform Optimized for Assisted Sustainable Agriculture. Proceedings of the IEEE Global Humanitarian Technology Conference (GHTC), San Jose, CA, USA."},{"key":"ref_25","doi-asserted-by":"crossref","unstructured":"Zou, T., Lin, S., Feng, Q., and Chen, Y. (2016). Energy-efficient control with harvesting predictions for solar-powered wireless sensor networks. Sensors, 16.","DOI":"10.3390\/s16010053"},{"key":"ref_26","unstructured":"Nguyen, T.-D., Thanh, T.T., Nguyen, L.-L., and Huynh, H.-T. (2015, January 25\u201328). On the Design of energy Efficient Environment Monitoring Station and Data Collection Network Based on Ubiquitous Wireless Sensor Networks. Proceedings of the 2015 IEEE RIVF International Conference on Computing & Communication Technologies-Research, Innovation, and Vision for the Future (RIVF), C\u1ea7n Th\u01a1, Vietnam."},{"key":"ref_27","doi-asserted-by":"crossref","unstructured":"Eto, M., Katsuma, R., Tamai, M., and Yasumoto, K. (2015, January 24\u201327). Efficient coverage of agricultural field with mobile sensors by predicting solar power generation. Proceedings of the 2015 IEEE 29th International Conference on Advanced Information Networking and Applications (AINA), Gwangju, Korea.","DOI":"10.1109\/AINA.2015.167"},{"key":"ref_28","doi-asserted-by":"crossref","unstructured":"Fourie, C., Bhatt, D., Silva, B., Kumar, A., and Hancke, G. (2017, January 19\u201321). A solar-powered fish pond management system for fish farming conservation. Proceedings of the International Symposium on Industrial Electronics (ISIE), Scotland, UK.","DOI":"10.1109\/ISIE.2017.8001565"},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"88","DOI":"10.1016\/j.compag.2016.12.007","article-title":"Wsn application for crop protection to divert animal intrusions in the agricultural land","volume":"133","author":"Bapat","year":"2017","journal-title":"Comput. Electron. Agric."},{"key":"ref_30","doi-asserted-by":"crossref","unstructured":"Villarrubia, G., Paz, J.F.D., Iglesia, D.H., and Bajo, J. (2017). Combining multi-agent systems and wireless sensor networks for monitoring crop irrigation. Sensors, 17.","DOI":"10.3390\/s17081775"},{"key":"ref_31","doi-asserted-by":"crossref","first-page":"64","DOI":"10.1016\/j.agwat.2014.10.022","article-title":"A wireless sensors architecture for efficient irrigation water management","volume":"151","year":"2015","journal-title":"Agric. Water Manag."},{"key":"ref_32","doi-asserted-by":"crossref","unstructured":"Cambra, C., Sendra, S., Lloret, J., and Lacuesta, R. (2018). Smart system for bicarbonate control in irrigation for hydroponic precision farming. Sensors, 18.","DOI":"10.3390\/s18051333"},{"key":"ref_33","doi-asserted-by":"crossref","unstructured":"Ilie-Ablachim, D., P\u0103tru, G.C., Florea, I.-M., and Rosner, D. (2016, January 7\u20139). Monitoring device for culture substrate growth parameters for precision agriculture: Acronym: Monisen. Proceedings of the 2016 15th RoEduNet Conference: Networking in Education and Research, Bucharest, Romania.","DOI":"10.1109\/RoEduNet.2016.7753237"},{"key":"ref_34","doi-asserted-by":"crossref","unstructured":"Zaier, R., Zekri, S., Jayasuriya, H., Teirab, A., Hamza, N., and Al-Busaidi, H. (2015, January 18\u201320). Design and implementation of smart irrigation system for groundwater use at farm scale. Proceedings of the 2015 7th International Conference on Modelling, Identification and Control (ICMIC), Sousse, Tunisia.","DOI":"10.1109\/ICMIC.2015.7409402"},{"key":"ref_35","doi-asserted-by":"crossref","first-page":"280","DOI":"10.1007\/s11119-010-9178-1","article-title":"Design and validation of a wireless sensor network architecture for precision horticulture applications","volume":"12","author":"Soto","year":"2011","journal-title":"Precis. Agric."},{"key":"ref_36","doi-asserted-by":"crossref","first-page":"2366","DOI":"10.4304\/jcp.8.9.2366-2373","article-title":"A chain-type wireless sensor network in greenhouse agriculture","volume":"8","author":"Sun","year":"2013","journal-title":"J. Comput."},{"key":"ref_37","doi-asserted-by":"crossref","unstructured":"Mittal, A., Chetan, K., Jayaraman, S., Jagyasi, B.G., Pande, A., and Balamuralidhar, P. (2012, January 18\u201321). Mkrishi wireless sensor network platform for precision agriculture. Proceedings of the Sixth International Conference on Sensing Technology (ICST), Kolkata, India.","DOI":"10.1109\/ICSensT.2012.6461755"},{"key":"ref_38","doi-asserted-by":"crossref","unstructured":"Granda-Cantu\u00f1a, J., Molina-Colcha, C., Hidalgo-Lupera, S.-E., and Valarezo-Varela, C.-D. (2018, January 4\u20136). Design and implementation of a wireless sensor network for precision agriculture operating in api mode. Proceedings of the International Conference on eDemocracy & eGovernment (ICEDEG), Ambato, Ecuador.","DOI":"10.1109\/ICEDEG.2018.8372346"},{"key":"ref_39","doi-asserted-by":"crossref","first-page":"83","DOI":"10.1016\/j.compag.2014.04.012","article-title":"Wireless sensor network coverage measurement and planning in mixed crop farming","volume":"105","author":"Ndzi","year":"2014","journal-title":"Comput. Electron. Agric."},{"key":"ref_40","doi-asserted-by":"crossref","unstructured":"Chen, Y.-C., Chen, P.-Y., and Wen, C.-Y. (2016). Request-centric wireless bus information management system. Inventions, 1.","DOI":"10.3390\/inventions1040023"},{"key":"ref_41","first-page":"93","article-title":"Microcontroller-based power monitoring and switching device for appliances over a zigbee network","volume":"10","author":"Ante","year":"2018","journal-title":"J. Telecommun. Electron. Comput. Eng."},{"key":"ref_42","doi-asserted-by":"crossref","first-page":"11741","DOI":"10.3390\/s150511741","article-title":"An ultra-low power wireless sensor network for bicycle torque performance measurements","volume":"15","author":"Gharghan","year":"2015","journal-title":"Sensors"},{"key":"ref_43","unstructured":"(2018, July 15). Xbee\/Xbee-Pro RF Modules. Available online: Http:\/\/www.Digi.Com."},{"key":"ref_44","unstructured":"(2018, August 04). Xbee\u00ae\/Xbee-Pro s2c Zigbee\u00aerf Module. Available online: Https:\/\/www.Digi.Com\/resources\/documentation\/digidocs\/pdfs\/90002002.Pdf."},{"key":"ref_45","doi-asserted-by":"crossref","first-page":"756","DOI":"10.1016\/j.jnca.2012.12.012","article-title":"Intelligent multi-sensor control system based on innovative technology integration via zigbee and wi-fi networks","volume":"36","author":"Lian","year":"2013","journal-title":"J. Netw. Comput. Appl."},{"key":"ref_46","doi-asserted-by":"crossref","first-page":"118","DOI":"10.1016\/j.ins.2017.09.036","article-title":"An adaptive virtual relaying set scheme for loss-and-delay sensitive wsns","volume":"424","author":"Liu","year":"2018","journal-title":"Inf. Sci."},{"key":"ref_47","doi-asserted-by":"crossref","first-page":"16","DOI":"10.1109\/MITP.2017.28","article-title":"Opportunistic wireless networking for smart dairy farming","volume":"19","author":"Kulatunga","year":"2017","journal-title":"IT Prof."},{"key":"ref_48","doi-asserted-by":"crossref","first-page":"76","DOI":"10.1109\/MIS.2015.67","article-title":"Precision farming: Sensor analytics","volume":"30","author":"Ivanov","year":"2015","journal-title":"IEEE Intell. Syst."},{"key":"ref_49","doi-asserted-by":"crossref","first-page":"121","DOI":"10.1016\/j.compag.2016.04.003","article-title":"A decision support system for managing irrigation in agriculture","volume":"124","year":"2016","journal-title":"Comput. Electron. Agric."},{"key":"ref_50","doi-asserted-by":"crossref","first-page":"258","DOI":"10.1016\/j.agwat.2014.10.015","article-title":"Investigating the effects of soil moisture sensors positioning and accuracy on soil moisture based drip irrigation scheduling systems","volume":"148","author":"Soulis","year":"2015","journal-title":"Agric. Water Manag."},{"key":"ref_51","doi-asserted-by":"crossref","first-page":"15573","DOI":"10.3390\/s140815573","article-title":"Energy-efficient zigbee-based wireless sensor network for track bicycle performance monitoring","volume":"14","author":"Gharghan","year":"2014","journal-title":"Sensors"},{"key":"ref_52","doi-asserted-by":"crossref","first-page":"2836","DOI":"10.1109\/TMC.2014.2307332","article-title":"Joint mobile data gathering and energy provisioning in wireless rechargeable sensor networks","volume":"13","author":"Guo","year":"2014","journal-title":"IEEE Trans. Mob. Comput."},{"key":"ref_53","doi-asserted-by":"crossref","first-page":"449","DOI":"10.1007\/s00779-013-0663-1","article-title":"Energy management in solar cells powered wireless sensor networks for quality of service optimization","volume":"18","author":"Escolar","year":"2014","journal-title":"Pers. Ubiquitous Comput."},{"key":"ref_54","first-page":"4623","article-title":"Solar powered wireless monitoring system of environmental conditions for early flood prediction or optimized irrigation in agriculture","volume":"11","author":"Visconti","year":"2016","journal-title":"J. Eng. Appl. Sci."},{"key":"ref_55","unstructured":"Atmel Inc. (2018, July 16). Atmel 8-bit Avr Microcontroller with 4\/8\/16\/32k Bytes in System Programmable Flash. Available online: http:\/\/www.atmel.com\/Images\/doc8161.pdf."},{"key":"ref_56","doi-asserted-by":"crossref","first-page":"1627","DOI":"10.1016\/j.mejo.2014.08.010","article-title":"Wake-up radio receiver based power minimization techniques for wireless sensor networks: A review","volume":"45","author":"Magno","year":"2014","journal-title":"Microelectron. J."},{"key":"ref_57","doi-asserted-by":"crossref","unstructured":"Gharghan, S.K., Nordin, R., and Ismail, M. (2016). Energy efficiency of ultra-low-power bicycle wireless sensor networks based on a combination of power reduction techniques. J. Sens.","DOI":"10.1155\/2016\/7314207"},{"key":"ref_58","doi-asserted-by":"crossref","first-page":"108","DOI":"10.1111\/gcbb.12474","article-title":"Woody biochar\u2019s greenhouse gas mitigation potential across fertilized and unfertilized agricultural soils and soil moisture regimes","volume":"10","author":"Ramlow","year":"2018","journal-title":"GCB Bioenergy"}],"container-title":["Sensors"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1424-8220\/18\/10\/3450\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T15:25:30Z","timestamp":1760196330000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1424-8220\/18\/10\/3450"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2018,10,13]]},"references-count":58,"journal-issue":{"issue":"10","published-online":{"date-parts":[[2018,10]]}},"alternative-id":["s18103450"],"URL":"https:\/\/doi.org\/10.3390\/s18103450","relation":{},"ISSN":["1424-8220"],"issn-type":[{"value":"1424-8220","type":"electronic"}],"subject":[],"published":{"date-parts":[[2018,10,13]]}}}