{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,30]],"date-time":"2025-10-30T07:07:49Z","timestamp":1761808069393,"version":"build-2065373602"},"reference-count":21,"publisher":"MDPI AG","issue":"10","license":[{"start":{"date-parts":[[2016,10,22]],"date-time":"2016-10-22T00:00:00Z","timestamp":1477094400000},"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>Precision agriculture is the trend of modern agriculture, and it is also one of the important ways to realize the sustainable development of agriculture. In order to meet the production requirements of precision agriculture\u2014efficient use of agricultural resources, and improving the crop yields and quality\u2014some necessary field information in crop growth environment needs to be collected and monitored. In this paper, a farmland information collection system is developed, which includes a portable farmland information collection device based on STM32 (a 32-bit comprehensive range of microcontrollers based on ARM Crotex-M3), a remote server and a mobile phone APP. The device realizes the function of portable and mobile collecting of multiple parameters farmland information, such as chlorophyll content of crop leaves, air temperature, air humidity, and light intensity. UM220-III (Unicore Communication Inc., Beijing, China) is used to realize the positioning based on BDS\/GPS (BeiDou Navigation Satellite System, BDS\/Global Positioning System, GPS) dual-mode navigation and positioning system, and the CDMA (Code Division Multiple Access, CDMA) wireless communication module is adopted to realize the real-time remote transmission. The portable multi-function farmland information collection system is real-time, accurate, and easy to use to collect farmland information and multiple information parameters of crops.<\/jats:p>","DOI":"10.3390\/s16101762","type":"journal-article","created":{"date-parts":[[2016,10,24]],"date-time":"2016-10-24T10:46:39Z","timestamp":1477305999000},"page":"1762","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":13,"title":["A Portable Farmland Information Collection System with Multiple Sensors"],"prefix":"10.3390","volume":"16","author":[{"given":"Jianfeng","family":"Zhang","sequence":"first","affiliation":[{"name":"College of Information Engineering, Northwest A&amp;F University, Yangling 712100, China"}]},{"given":"Jinyang","family":"Hu","sequence":"additional","affiliation":[{"name":"College of Information Engineering, Northwest A&amp;F University, Yangling 712100, China"}]},{"given":"Lvwen","family":"Huang","sequence":"additional","affiliation":[{"name":"College of Information Engineering, Northwest A&amp;F University, Yangling 712100, China"}]},{"given":"Zhiyong","family":"Zhang","sequence":"additional","affiliation":[{"name":"College of Information Engineering, Northwest A&amp;F University, Yangling 712100, China"}]},{"given":"Yimian","family":"Ma","sequence":"additional","affiliation":[{"name":"College of Information Engineering, Northwest A&amp;F University, Yangling 712100, China"}]}],"member":"1968","published-online":{"date-parts":[[2016,10,22]]},"reference":[{"key":"ref_1","unstructured":"Wang, X.D., Wang, H.M., and Dang, A.R. (2000, January 24\u201328). Research on large-scale dynamic monitoring of land use with RS, GPS and GIS. Proceedings of the IEEE 2000 International Geoscience and Remote Sensing Symposium, New York, NY, USA."},{"key":"ref_2","first-page":"171","article-title":"Design and implementation of monitoring system for agricultural environment based on Web-GIS with Internet of Things","volume":"4","author":"Du","year":"2016","journal-title":"Trans. Chin. Soc. Agric. Eng."},{"key":"ref_3","doi-asserted-by":"crossref","unstructured":"Chen, X., Zhao, J.Y., Bi, J.F., and Li, L.Y. (2012, January 2\u20134). Research of real-time agriculture information collection system based on mobile GIS. Proceedings of the International Conference on Agro-Geoinformatics, Shanghai, China.","DOI":"10.1109\/Agro-Geoinformatics.2012.6311703"},{"key":"ref_4","doi-asserted-by":"crossref","unstructured":"Zhang, W., Ma, H., and Yang, S.X. (2016). An inexpensive, stable, and accurate relative humidity measurement method for challenging environments. Sensors, 3.","DOI":"10.3390\/s16030398"},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"3809","DOI":"10.1016\/j.eswa.2013.12.017","article-title":"Cloud computing service composition: A systematic literature review","volume":"8","author":"Jula","year":"2014","journal-title":"Expert Syst. Appl."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"2787","DOI":"10.1016\/j.comnet.2010.05.010","article-title":"The internet of things: A survey","volume":"15","author":"Atzori","year":"2010","journal-title":"Comput. Netw."},{"key":"ref_7","unstructured":"Hirofumi, I., Yukimasa, K., Jungo, I., Naoki, O., Masahiro, K., and Hiroshi, M. (2016). A reliable wireless control system for tomato hydroponics. Sensors, 5."},{"key":"ref_8","first-page":"779","article-title":"In-situ performance and usability of a distributed, wireless sensor network via mesh connectivity at a production container nursery","volume":"5","author":"Bailey","year":"2013","journal-title":"Appl. Eng. Agric."},{"key":"ref_9","doi-asserted-by":"crossref","unstructured":"Zhu, W.P., Chen, W.R., Hu, Z.J., Li, Z.Y., Liang, Y., and Chen, J.J. (2016). Data collection for mobile group consumption: An asynchronous distributed approach. Sensors, 4.","DOI":"10.3390\/s16040482"},{"key":"ref_10","first-page":"80","article-title":"Design of an intelligent farmland information collection system based on RFID_GPS","volume":"11","author":"Yao","year":"2014","journal-title":"Water Sav. Irrig."},{"key":"ref_11","first-page":"65","article-title":"Design of farmland environment remote monitoring system based on ZigBee network","volume":"11","author":"Guo","year":"2013","journal-title":"J. Agric. Mech. Res."},{"key":"ref_12","first-page":"809","article-title":"Chlorophyll meter-based nitrogen management for no-till direct seeded rice","volume":"3","author":"Yin","year":"2012","journal-title":"Res. Cr."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"72","DOI":"10.1016\/S1002-0160(14)60077-1","article-title":"Site-specific nitrogen management in dry direct-seeded rice using chlorophyll meter and leaf colour chart","volume":"1","author":"Ali","year":"2015","journal-title":"Pedosphere"},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"313","DOI":"10.1007\/s12230-013-9306-3","article-title":"Chlorophyll meter for the evaluation of potato n status","volume":"4","author":"Giletto","year":"2013","journal-title":"Am. J. Potato Res."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"190","DOI":"10.1016\/S2095-3119(14)60925-4","article-title":"Establishing dynamic thresholds for potato nitrogen status diagnosis with the SPAD chlorophyll meter","volume":"1","author":"Zheng","year":"2015","journal-title":"J. Integr. Agric."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"817","DOI":"10.2135\/cropsci2013.03.0160","article-title":"Multiple leaf measurements improve effectiveness of chlorophyll meter for durum wheat nitrogen management","volume":"2","author":"Wang","year":"2014","journal-title":"Crop Sci."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"51","DOI":"10.54386\/jam.v17i1.975","article-title":"Evaluation and calibration of noninvasive leaf chlorophyll meters for wheat","volume":"1","author":"Lunagaria","year":"2015","journal-title":"J. Agrometeorol."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"604","DOI":"10.1002\/jpln.201100161","article-title":"Influence of sulfur deficiency on chlorophyll-meter readings of corn leaves","volume":"4","author":"Pagani","year":"2012","journal-title":"J. Plant Nutr."},{"key":"ref_19","doi-asserted-by":"crossref","unstructured":"Zhang, J.F., Han, W.T., Huang, L.W., Zhang, Z.Y., Ma, Y.M., and Hu, Y.M. (2016). Leaf chlorophyll content estimation of winter wheat based on visible and near-infrared sensors. Sensors, 4.","DOI":"10.3390\/s16040437"},{"key":"ref_20","first-page":"1155","article-title":"Development of a low-cost crop chlorophyll detector","volume":"4","author":"Liu","year":"2012","journal-title":"Comput. Meas. Control"},{"key":"ref_21","unstructured":"Unicore Protocol Specification Ver.1.0-UM220 III. Available online: http:\/\/www.unicorecomm.com\/service\/index.html."}],"container-title":["Sensors"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1424-8220\/16\/10\/1762\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T19:33:43Z","timestamp":1760211223000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1424-8220\/16\/10\/1762"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2016,10,22]]},"references-count":21,"journal-issue":{"issue":"10","published-online":{"date-parts":[[2016,10]]}},"alternative-id":["s16101762"],"URL":"https:\/\/doi.org\/10.3390\/s16101762","relation":{},"ISSN":["1424-8220"],"issn-type":[{"type":"electronic","value":"1424-8220"}],"subject":[],"published":{"date-parts":[[2016,10,22]]}}}