Research on illumination uniformity in edible mushrooms incubator with genetic algorithm

Bai, Jinjun; Li, Xiongwei; Hu, L.H.; Wei, Yuxin; Gao, Tiecheng; Xu, Xin­guang; Sun, Xiaodong

doi:10.1016/j.ijleo.2021.166862

Cited by 3 publications

(2 citation statements)

References 15 publications

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“…The uniform irradiance of the target plane reached 60.64%。 In order to improve the irradiance and uniformity on target plane. On the one hand, the LED array was constructed by the way of red LED interval arrangement, which could not only make up for the lack of irradiance through the superposition of illumination, but also effectively expand the irradiance area [25,26]. On the other hand, as the knee is a free-form curved surface, it was easy to laminate onto the knee skin by FPCB compared to traditional printed circuit board (PCB).…”

Section: The Led Arraymentioning

confidence: 99%

Wearable Flexible Phototherapy Device for Knee Osteoarthritis

et al. 2021

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Knee osteoarthritis (OA) is a highly prevalent and disabling disease that causes pain and gradual degeneration of the articular cartilage. Phototherapy is a new physiotherapy treatment, more effective and stable than other non-pharmacologic management. Conventional phototherapy devices typically suffer from unintelligent and bulky equipment, while existing phototherapy methods require maintain a certain phototherapy distance. Here, we introduce a wearable flexible phototherapy device worn on a knee for osteoarthritis, incorporating a phototherapy adhesive patch and a control box. The phototherapy adhesive patch is capable of softly laminating onto the curved surfaces of the knee skin to increase the effects of phototherapy. We describe the LED array, constant current drive module, key control module, and power supply module that serve as the foundations for the control box. The weight of the device is only 101.8 g. The irradiance of the device can be adjusted linearly and irradiance of the designed phototherapy device based on LED can reach 13 mW/cm2. The maximum temperature of the surface of the light source is 31.2 °C. The device proposed in this work exhibits satisfactory stability, promising a potential in phototherapy.

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Section: The Led Arraymentioning

confidence: 99%

Wearable Flexible Phototherapy Device for Knee Osteoarthritis

et al. 2021

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“…The illumination uniformity can be used to evaluate the distribution of light intensity. The light uniformity u was defined as the ratio of the illuminance mean E ave to the maximum illuminance E max [40][41][42].…”

Section: Light Intensity Distributionmentioning

confidence: 99%

Feasibility Analysis of Creating Light Environment for Growing Containers with Marine Renewable Energy

Kuang

Fan²,

Zhang³

et al. 2022

Sustainability

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Offshore renewable energy is essential to reduce carbon emissions in China. However, due to the lack of application scenarios, it is difficult to use renewable energy locally near offshore power plants. To find an application scenario for offshore renewable energy, a growing container is developed and combined with offshore renewable energy for food production. Small experimental containers were tested, and their light intensities were compared to simulation results. The light intensity range and uniformity of 20-foot containers were evaluated for some short-growth cycle crops. Adding side reflectors and using LED light beads improved the energy efficiency considerably. Side reflectors improved both the light intensity U and lighting uniformity u on the irradiated surface, but the improvement decreased with increased plant height. With a plant height of 0–25 cm, U increased by 57.4–16.6% and u by 13.1–8%, compared to the case without reflectors. Considering the energy consumption of lighting, air conditioning, and ventilation, the daily power consumption of growing containers was between 50 and 79 kWh; a 5 MW wind plant could support the operation of up to 294 growing containers. Growing containers can also tolerate short-term output fluctuations in renewable power production and they can be adapted to sizeable seasonal output fluctuations by reducing the proportion of leafy vegetables and increasing the proportion of sprouts and mushrooms, which require less light.

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Illumination uniformity of an LD and LED hybrid lighting system applied to plant growth

Xu¹,

Zeng²,

Li³

et al. 2022

Appl. Opt.

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To develop a current plant lighting source with both a suitable illumination area and high illumination uniformity, we propose a lighting system for plant growth based on the combination of laser diode and LED lighting modes. We added a triangular-prism-shaped base plate element to the previous array type optical structure to increase the light coupling degree and expand the illumination area. The Taguchi method was used in our design and experiment, and the influence of different factors on the illumination uniformity was studied and compared to the lighting effect of a traditional array floor structure. Finally, a plant lighting source with an illumination uniformity of 88.54% and color-mixing uniformity of 84.75% was obtained. Compared to the commonly adopted array structure, this plant lighting source expands the illumination area by 31.03%, which verifies the effectiveness of the scheme.

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Research on illumination uniformity in edible mushrooms incubator with genetic algorithm

Cited by 3 publications

References 15 publications

Wearable Flexible Phototherapy Device for Knee Osteoarthritis

Wearable Flexible Phototherapy Device for Knee Osteoarthritis

Feasibility Analysis of Creating Light Environment for Growing Containers with Marine Renewable Energy

Illumination uniformity of an LD and LED hybrid lighting system applied to plant growth

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