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作者

Malka N. Halgamuge;Alexe Bojovschi;Peter M.J. Fisher;Tu C. Le;Samuel Adeloju;Susan Murphy

来源

URBAN FORESTRY & URBAN GREENING,Vol.61,Issue1,Article 127094

语言

英文

关键字

IoT;Vertical garden;Vertical greening, or vertical farming;Smart farm;Smart living;Smart cities;Sensors;Crop;Plant

作者单位

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and Forest Sciences, University of Melbourne, Burnley Campus, Richmond, Victoria 3010, Australia;Department of Electrical and Electronics Engineering, University of Melbourne, Parkville, Victoria 3010, Australia;Center for Technology Innovation, IntAIB, Melbourne, Australia, School of Engineering, Amity University, Noida, India;Deakin University, Melbourne, Australia;School of Engineering, RMIT University, Melbourne, Victoria 3001, Australia;Faculty of Science, Charles Sturt University, Wagga Wagga, NSW, Australia;School of Ecosystem and Forest Sciences, University of Melbourne, Burnley Campus, Richmond, Victoria 3010, Australia

摘要

The development of green spaces in urban areas is rapidly on the rise as more people are keen to maintain a clean and green atmosphere around where they live and work. Also, the link between the physical world and the internet has been a driving force in enhancing people's quality of life which has resulted in the most recent and rising technologies, collectively referred to as the Internet of Things (IoT). The adoption of vertical gardens (VG) and/or vertical farms (VF) can be beneficial for maintaining a sustainable environment, as well as for expanding food security in an urban context around the world with limited land space. IoT technologies have the potential to be key enablers in the accelerated adoption of VG. In this study, we investigate the critical parameters for automating sustainable vertical gardening systems by using the IoT concept in smart cities towards smart living. This involves collection and review of data from 30 peer-reviewed publications published between 2004 and 2018, including real-world VG implementations. The key criteria considered include: (i) crop/plant type, (ii) VG topology (size), (iii) sensing data, (iv) used hardware (sensors, actuators, etc.), (v) power supplies, (vi) velocity or frequency of data collection, (vii) data storage method, (viii) communication technologies, (ix) data analysis methods/algorithm, (x) other used strategies, and (xi) countries that implemented VGs. The data were subsequently analyzed to obtain a detailed understanding of using IoT in VGs. The results of the analysis revealed that most of the studies used 6-20 tiers (40%) when implementing VGs, and the most popular crop was lettuce (28.6%). The sensors used were commonly connected to AC power and battery (each 44.4%), while only a small proportion of VGs used solar power (11.1%). The majority of IoT sensors used were to measure room temperature (22.5%), light intensity (21.1%), humidity level (14%) and soil nutrition (7%). The frequency of data collection by these sensors was between 1 and 3 minutes (42.8%). The frequently used data transmission technology was Zigbee and Wi-Fi (42.8%) for collecting sensor data from VGs. We also found that, using the server database, remote data management platform and cloud were the most popular data storage methods (each 25%). After data collection, many studies used threshold-based algorithms (50%) for the decision making, and the soil-based (42%) and hydroponic (38%) were the most popular plant cultivation technologies. The use of recycled and reused water (30%), solar power (20%) and controlled indoor environment, without sun or soil (20%) are some of the other essential considerations in VGs. Furthermore, it was found that the most significant focus on automation of VGs incorporating IoT were in USA (41.2%) and China (23.5%). The impact of vertical cultivation walls on human well-being was discussed. In addition to this, eight international patents on VGs have been analyzed to acquire an implementation understanding of autonomous control or using IoT in vertical gardens.