Smart Precision Lighting for Urban and Landscape Closed Controlled Horticultural Environments

Piromalis, Dimitrios; Arvanitis, Konstantinos G.; Papageorgas, Panagiotis; Ferentinos, Konstantinos P.

doi:10.1007/978-3-319-67017-1_6

Cited by 6 publications

(8 citation statements)

References 45 publications

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“…The sustainability of the cultivation system is a critical point of indoor production, which can be improved by the optimization of the production factors, such as water, substrate, and energy intake [51]. In particular, energy consumption mainly depends on the lighting, since the optimization of light emission-in terms of quality and intensity-can improve the system sustainability [52,53]. The choice of the substrate is no less important, as we have seen.…”

Section: Discussionmentioning

confidence: 99%

Quality Evaluation of Indoor-Grown Microgreens Cultivated on Three Different Substrates

Bulgari

Negri

Santoro³

et al. 2021

Horticulturae

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The microgreens are innovative products in the horticultural sector. They are appreciated by consumers thanks to their novelty and health-related benefits, having a high antioxidant concentration. This produce can be adopted for indoor production using hydroponic systems. The aim of the present work was to investigate the influence of three growing media (vermiculite, coconut fiber, and jute fabric) on yield and quality parameters of two basil varieties (Green basil—Ocimum basilicum L., Red basil—Ocimum basilicum var. Purpurecsens) and rocket (Eruca sativa Mill.) as microgreens. Microgreens were grown in floating, in a Micro Experimental Growing (MEG®) system equipped with LED lamps, with modulation of both energy and spectra of the light supplied to plants. Results showed high yield, comprised from 2 to 3 kg m−2. Nutritional quality varied among species and higher antioxidant compounds were found in red basil on vermiculite and jute. Coconut fiber allowed the differentiation of crop performance in terms of sucrose and above all nitrate. In particular, our results point out that the choice of the substrate significantly affected the yield, the dry matter percentage and the nitrate concentration of microgreens, while the other qualitative parameters were most influenced by the species.

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Section: Discussionmentioning

confidence: 99%

Quality Evaluation of Indoor-Grown Microgreens Cultivated on Three Different Substrates

Bulgari

Negri

Santoro³

et al. 2021

Horticulturae

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“…COB panels are, among the panel category, the ones with the highest power consumption, with an average PPF 1.45 times greater than that of traditional panels (Figure 4). Particularly, AutoCOB and COB panels are chip-on-board (COB) LED solutions involving several LEDs connected together in various combinations, optically matched under the same primary lens and characterized by high light intensities [60]. Concerning single-linear LED solutions, all light typologies in the category exhibited lower average power consumption (less than 250 W), although linear modules offer the greatest average light output (around 650 µmol s −1 ) (Figure 4).…”

Section: Power Consumption Of Luminaires and Their Lighting Environmentmentioning

confidence: 99%

LED Lighting Systems for Horticulture: Business Growth and Global Distribution

et al. 2020

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In recent years, research on light emitting diodes (LEDs) has highlighted their great potential as a lighting system for plant growth, development and metabolism control. The suitability of LED devices for plant cultivation has turned the technology into a main component in controlled or closed plant-growing environments, experiencing an extremely fast development of horticulture LED metrics. In this context, the present study aims to provide an insight into the current global horticulture LED industry and the present features and potentialities for LEDs’ applications. An updated review of this industry has been integrated through a database compilation of 301 manufacturers and 1473 LED lighting systems for plant growth. The research identifies Europe (40%) and North America (29%) as the main regions for production. Additionally, the current LED luminaires’ lifespans show 10 and 30% losses of light output after 45,000 and 60,000 working hours on average, respectively, while the vast majority of worldwide LED lighting systems present efficacy values ranging from 2 to 3 μmol J−1 (70%). Thus, an update on the status of the horticultural LED sector, LEDs’ applications and metrics, and the intense innovation are described and discussed.

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“…The studies in [16], [17], [18], [19], [20], [21], [22], [23], [24], [25], [26], [27], [28], and [29] demonstrate how dynamic lighting and optimization methods can help to increase the energy savings achievable by LED systems. In [17], the effects of dynamic regulation of supplemental lighting intensity on electricity consumption and fresh weight buildup were examined.…”

Section: Introductionmentioning

confidence: 99%

An Energy-Efficient PAR-Based Horticultural Lighting System for Greenhouse Cultivation of Lettuce

Mohagheghi

Moallem

2023

IEEE Access

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This paper presents an intelligent horticulture lighting and monitoring system to achieve energy-efficient supplemental lighting while maintaining the light quality and intensity at desired levels in the photosynthesis spectrum. Energy-efficiency is achieved through delivering only the required net light intensity, consisting of sunlight and supplemental LED light, using an intelligent controller that does not depend on the lighting system model. To this end, an online neural-network learning control system is developed, comprised of low-cost light sensors for measuring the photosynthetic photon flux density (PPFD), dimmable LED light fixtures, cameras, and internet-of-things (IoT)-enabled firmware used for crop monitoring and performance evaluation. Experiments performed in a research greenhouse facility on the lettuce crop are presented which indicate that the system can deliver the desired Daily Light Integrals (DLIs) to the plants in the presence of changing daylight conditions. The proposed method can thus deliver the exact amount of light to a specific crop based on the required light recipes during different growth phases. The control performance is further compared with a conventional on-off time-scheduling method in terms of plant health, growth, and energy requirements. The experiments indicate that the proposed solution can reduce energy consumption per unit dry mass of lettuce by 28% when compared to existing time-scheduling methods.INDEX TERMS Daylight harvesting, energy-efficiency, horticultural lighting, Internet of Things, machine learning, neural networks, PAR measurement.

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Smart Precision Lighting for Urban and Landscape Closed Controlled Horticultural Environments

Cited by 6 publications

References 45 publications

Quality Evaluation of Indoor-Grown Microgreens Cultivated on Three Different Substrates

Quality Evaluation of Indoor-Grown Microgreens Cultivated on Three Different Substrates

LED Lighting Systems for Horticulture: Business Growth and Global Distribution

An Energy-Efficient PAR-Based Horticultural Lighting System for Greenhouse Cultivation of Lettuce

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