Real-Time Sensing and Control of Integrative Horticultural Lighting Systems

Optical radiation, including light, plays a crucial role in the structural development of plants through photomorphogenesis and the response to environmental changes. However, plant sensitivity to optical radiation widely varies across species. While research efforts are currently underway to discover the fundamentals of plant physiology, light sources with preprogrammed light settings (light recipes) are offered to clients to expedite plant growth. Since horticultural lighting research is in its infancy, prescribed lighting conditions are not likely to address every plants’ needs in terms of the spatial and spectral distribution, intensity, and duration of the light sources. However, it is possible to imagine an intelligent horticultural lighting system that can diagnose plants through sensors, and adjust the light intensity, the spatial and spectral distribution for the specific plant species with active feedback. Such an advanced real-time horticultural lighting system would consist of sensors to detect physiological markers from plants and environmental factors and an artificial intelligence algorithm to adjust the output. While the underlying technology for a real-time optimization system exists, the implementation and training would require further research.

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A REAL-TIME INTEGRATIVE LIGHTING SYSTEM FRAMEWORK BASED ON MACHINE LEARNING

10.25039/x48.2021.po40 ◽

2021 ◽

Author(s):

D. Durmus

Keyword(s):

Decision Making ◽

Evolutionary Algorithms ◽

Real Time ◽

Initial Conditions ◽

Large Data ◽

Psychological Needs ◽

Lighting System ◽

Smart Lighting ◽

Lighting Systems ◽

Human Factors Research

Smart lighting systems are based on sensors and tunable lighting systems are increasingly more prevalent, but collecting, analysing, and using the large data generated by these sensors are challenging. Inspired by research on evolutionary algorithms, it can be hypothesized that an adaptive lighting system can operate in real-time by adjusting its output through a decision-making algorithm based on data mining techniques. Such an adaptive lighting system requires two-order input from users; initial and continual. Initial conditions provide training to the system through human factors research investigating the interaction between humans and their environment. Continual conditions are provided by data collected through sensors in real-time, and they continuously feed into the decision-making algorithm to adjust the output to meet occupants’ biological and psychological needs. Research indicates that artificial intelligence techniques, such as evolutionary algorithms, can emerge as good candidates for this framework.

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Plant Productivity in Response to LED Lighting

HortScience ◽

10.21273/hortsci.43.7.1951 ◽

2008 ◽

Vol 43 (7) ◽

pp. 1951-1956 ◽

Cited By ~ 308

Author(s):

Gioia D. Massa ◽

Hyeon-Hye Kim ◽

Raymond M. Wheeler ◽

Cary A. Mitchell

Keyword(s):

Plant Growth ◽

Crop Production ◽

Energy Use ◽

Sole Source ◽

Light Sources ◽

Lighting System ◽

Light Emitting ◽

Agriculture Industry ◽

Lighting Systems ◽

Kennedy Space

Light-emitting diodes (LEDs) have tremendous potential as supplemental or sole-source lighting systems for crop production both on and off earth. Their small size, durability, long operating lifetime, wavelength specificity, relatively cool emitting surfaces, and linear photon output with electrical input current make these solid-state light sources ideal for use in plant lighting designs. Because the output waveband of LEDs (single color, nonphosphor-coated) is much narrower than that of traditional sources of electric lighting used for plant growth, one challenge in designing an optimum plant lighting system is to determine wavelengths essential for specific crops. Work at NASA's Kennedy Space Center has focused on the proportion of blue light required for normal plant growth as well as the optimum wavelength of red and the red/far-red ratio. The addition of green wavelengths for improved plant growth as well as for visual monitoring of plant status has been addressed. Like with other light sources, spectral quality of LEDs can have dramatic effects on crop anatomy and morphology as well as nutrient uptake and pathogen development. Work at Purdue University has focused on geometry of light delivery to improve energy use efficiency of a crop lighting system. Additionally, foliar intumescence developing in the absence of ultraviolet light or other less understood stimuli could become a serious limitation for some crops lighted solely by narrow-band LEDs. Ways to prevent this condition are being investigated. Potential LED benefits to the controlled environment agriculture industry are numerous and more work needs to be done to position horticulture at the forefront of this promising technology.

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EnergySaving Lighting of Agricultural Premises and its Parameters Calculation

Agricultural machinery and technologies ◽

10.22314/2073-7599-2021-15-3-28-34 ◽

2021 ◽

Vol 15 (3) ◽

pp. 28-34

Author(s):

L. Yu. Yuferev

Keyword(s):

Energy Saving ◽

Full Range ◽

Light Level ◽

Housing System ◽

Research Purpose ◽

Light Sources ◽

Lighting System ◽

Led Light ◽

Lighting Systems ◽

Provided Examples

he properly selected lighting for livestock farms is noted to ensure the optimal productivity of bred animals and poultry and to generate profit for the enterprise. (Research purpose) The research purpose is to substantiate the parameters of energy-saving lighting for agricultural premises and to develop methods for its calculation. (Materials and methods) It has been shown that greenhouse farms most often use high and low pressure sodium lamps for lighting, but their spectrum only partially substitutes the natural one. It has been assumed that expanding the spectrum and approximating it to the solar one could improve product quality and yield. It has been stated that incandescent and fluorescent lamps are traditionally used to illuminate livestock and poultry premises, but they cannot create a lighting system with a «dawn - sunset» function, and their spectrum does not correspond to the full range perceived by animals and birds. It has been noted that the LED light sources’ functioning has such features that make the application of standard calculation methods impossible. We obtained formulas for calculating the light level and flux of photons. (Results and discussion) We provided examples of applying the energy-saving lighting systems developed by us in poultry houses with floor housing system, in cowsheds with tethered housing system and in an experimental phyto-laboratory for growing seedlings. It has been found that after replacing the lighting system based on DRL-125 lamps with a new one, with 36 nine-watt LED lamps, the power consumption decreased from 2,250 to 336 watts, the average light level increased and amounted to 90 lux, while the illumination uniformity and color rendition improved. We have developed a resonant power supply system for LEDs to create lighting systems with a «sunrise - sunset» function. (Conclusions) We have shown the possibility and provided examples of using the developed by us energy-saving controlled lighting systems based on LED light sources.

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A real-time data mining framework for adaptive lighting systems

10.36227/techrxiv.12702863.v1 ◽

2020 ◽

Author(s):

Dorukalp Durmus

Keyword(s):

Data Mining ◽

Decision Making ◽

Real Time ◽

Lighting System ◽

Time Data ◽

Data Mining Techniques ◽

Real Time Data ◽

Lighting Systems

An adaptive lighting system can operate in real-time by adjusting its output through a decision-making algorithm based on data mining techniques.

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Problems with signal lighting colours’ recognition

Occupational Safety – Science and Practice ◽

10.5604/01.3001.0012.0968 ◽

2018 ◽

Vol 561 (6) ◽

pp. 12-15

Author(s):

Grzegorz Owczarek

Keyword(s):

Spectral Distribution ◽

Optical Radiation ◽

Light Emitting Diode ◽

Graphical Analysis ◽

Night Vision ◽

Light Sources ◽

Light Emitting ◽

Signal Light ◽

Different Types ◽

Spectral Distributions

The article presents the main eye hazards caused by excessive eye exposure on optical radiation. The human eye sensitivity spectral distribution in the context of signal colour recognition was discussed. In order to explain the effects of the mechanism of phenomena responsible for the recognition of signal lights colour, a graphical analysis of spectral distributions of signal lights emitted from traditional incandescent sources and LED sources (light emitting diode) was performed. This analysis also takes into account the conditions under which observation of signal lights may take place (daylight and night vision conditions). The conclusions also indicate the further direction of studies on the influence of colour recognition affected by vision conditions, eye sensitivity spectral distribution (including disturbance of colour recognition) and different types of signal light sources.

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A real-time data mining framework for adaptive lighting systems

10.36227/techrxiv.12702863 ◽

2020 ◽

Author(s):

Dorukalp Durmus

Keyword(s):

Data Mining ◽

Decision Making ◽

Real Time ◽

Lighting System ◽

Time Data ◽

Data Mining Techniques ◽

Real Time Data ◽

Lighting Systems

An adaptive lighting system can operate in real-time by adjusting its output through a decision-making algorithm based on data mining techniques.

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Organic Light Emitting Diodes - Innovative Light Sources

Light & Engineering ◽

10.33383/2018-157 ◽

2019 ◽

pp. 101-107

Author(s):

Sergei A. Stakharny

Keyword(s):

Light Source ◽

Organic Light Emitting Diodes ◽

Organic Leds ◽

Light Sources ◽

High Quality ◽

Light Emitting ◽

Organic Light ◽

Lighting Systems ◽

Physical Principles ◽

Prospects Of Application

This article is a review of the new light source – organic LEDs having prospects of application in general and special lighting systems. The article describes physical principles of operation of organic LEDs, their advantages and principal differences from conventional non-organic LEDs and other light sources. Also the article devoted to contemporary achievements and prospects of development of this field in the spheres of both general and museum lighting as well as other spheres where properties of organic LEDs as high-quality light sources may be extremely useful.

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Luminous Environment and the Perceived Environment

Light & Engineering ◽

10.33383/2019-010 ◽

2019 ◽

pp. 15-21

Author(s):

Banu Manav

Keyword(s):

Experimental Studies ◽

Light Output ◽

Lighting Design ◽

Lighting System ◽

Main Concept ◽

Healthy Environment ◽

Perceived Environment ◽

Efficiency Cost ◽

Lighting Systems ◽

User Friendly

In lighting design, the main concept is to achieve a healthy environment, which addresses energy efficiency, cost, maintenance, and quality. User-friendly lighting systems shall be adopted to architecture and interior architecture. User control over the lighting system is important, by dimming or increasing light output, by changing the colour of the light sets the inner atmosphere and affects user mood. Standards and codes on lighting shall also be evaluated by means of these topics. The paper aims to analyse how the luminous environment is affective on the perceived environment. Hence, a series of experimental studies and recent research will be evaluated in regard to understanding and designing luminous environment.

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Design of Solar-Powered LED Road Lighting System

Light & Engineering ◽

10.33383/2017-077 ◽

2019 ◽

pp. 75-85

Author(s):

Canan Perdahci ◽

Hamdi Ozkan

Keyword(s):

High Pressure ◽

Renewable Energy Sources ◽

Junction Temperature ◽

Mercury Vapour ◽

Light Sources ◽

Street Lighting ◽

Led Light ◽

Road Lighting ◽

Lighting Systems ◽

High Pressure Sodium Lamp

Turkey is rich in terms of renewable energy sources and, therefore, is now encouraging the use of sustainable clean lighting systems in road applications. High pressure sodium lamp is the most widely used type in main roads, but other types of lamps such as mercury vapour lamps or metal halide lamps can be utilized for street lighting. Since it enables energy and money saving, LED light technology has replaced high pressure sodium lamps nowadays. Once solar power system (PV) is integrated with LED lamp for street lighting, the amount of saving and local impact might be enriched. LEDs used as light sources in road lighting luminaires with rising lumen values, decreasing junction temperature, higher colour rendering efficiency, longer lifetime have become more efficient than many light sources with the latest developments. Since the structure of the luminaires in which the LED light sources are used differs from that of the conventional light sources, the optical, thermal and electrical design of the LED luminaires must be considered differently. Thus, this study concentrates upon design considerations and the operating principle of solarpowered LED road lighting luminaire in details. Also, a simple solar panel system was designed and the economical values obtained at the end of 20 years were compared when using the ongrid system and the off-grid system.

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