scholarly journals Smart Solar-Powered LED Outdoor Lighting System Based on the Energy Storage Level in Batteries

Buildings ◽  
2018 ◽  
Vol 8 (9) ◽  
pp. 119
Author(s):  
Suhil Kiwan ◽  
Anwar Abo Mosali ◽  
Adnan Al-Ghasem
Keyword(s):  
Light Emitting Diode ◽  
Lighting System ◽  
Energy Status ◽  
Sustainable Buildings ◽  
Light Emitting ◽  
Led Light ◽  
Smart Control ◽  
Solar Powered ◽  
Conventional Systems ◽  
New System

A novel smart solar-powered light emitting diode (LED) outdoor lighting system is designed, built, and tested. A newly designed controller, that continuously monitors the energy status in the battery and, accordingly, controls the level of illumination of the LED light to satisfy the lighting requirements and/or to keep the light “on” the longest time possible, has been developed. The use of such a reliable solar energy-driven lighting system, with maximum time when the light is “on”, will eliminate the sudden-death of light problem present in conventional photovoltaic (PV) outdoor lights and, therefore, will enhance the natural surveillance and feeling of safety in sustainable buildings and cities. Furthermore, the new smart control eliminates the overdischarge of the system battery and, thus, ensures a longer lifetime of the system battery. Experimental measurements on a system using a 30 W LED light showed that the operating hours of the new system reached 29.16 h (1750 min), while the operating hours for a similar conventional system were 20.86 h (1252 min). Thus, the new lighting system was demonstrated, securing more than 40% of operating hours than the conventional systems.

scholarly journals Optimized LED-Integrated Agricultural Facilities for Adjusting the Growth of Water Bamboo (Zizania latifolia)

2020 ◽  
Vol 10 (4) ◽  
pp. 1330
Author(s):  
Vincent K. S. Hsiao ◽  
Teng-Yun Cheng ◽  
Chih-Feng Chen ◽  
Hao Shiu ◽  
Yong-Jin Yu ◽  
...  
Keyword(s):  
Light Emitting Diode ◽  
Winter Season ◽  
Lighting System ◽  
Zizania Latifolia ◽  
Light Emitting ◽  
Led Lighting ◽  
Led Light ◽  
Bamboo Leaves

We investigated a light emitting diode (LED) lighting system applied to a water bamboo field during winter season at night, and the results indicated that this lighting system can prevent the stunting of water bamboo leaves and further assist its growth. Compared with previous LED systems, in which the LED bulbs were placed directly above water bamboo leaves, our LED lighting system presents the benefit of easy handling during harvest. To prevent the inhomogeneous coverage of LED light patterns, a new design of LED lenses was also incorporated.

The Design of LED Intelligent Lighting Control System Based on CAN Bus

2013 ◽  
Vol 753-755 ◽  
pp. 2637-2640
Author(s):  
Bang Cheng Zhang ◽  
Hua Zhen Wang ◽  
Yan Qing Jiang ◽  
Yan Juan Hu
Keyword(s):  
Control System ◽  
Can Bus ◽  
Light Emitting Diode ◽  
Railway Vehicle ◽  
Lighting System ◽  
Light Emitting ◽  
Led Light ◽  
Lighting Control ◽  
Vibration Resistance ◽  
Very High

In order to meet the requirements of high stability, high vibration resistance, energy saving and environmental protection and long service life for the railway vehicle car lighting system, this paper designed a LED (Light Emitting Diode) lighting control system suitable for railway vehicles car. Using IPC for the principal computer, microcontroller for the subordinate computer, CAN bus as the communication network. Multiple brightness sensor collect the brightness information of car environment. According to the characteristics that the LED is suitable for high frequency switch power, using PWM technology, the current though the LED light can be control. ATmega16 microcontroller as the control core can automatically to adjust the brightness of the car according to the change of external environment, it ensured that the LED light emitting uniform and stable so that this kind of control system has very high application value.

scholarly journals Design and Implementation of a radio controlled led lighting system

2016 ◽  
Vol 10 (1) ◽  
pp. 29-34 ◽  
Author(s):  
Ádám Bálint ◽  
József Sárosi
Keyword(s):  
Radio Frequency ◽  
Light Emitting Diode ◽  
Lighting System ◽  
Light Emitting ◽  
Led Lighting ◽  
Led Light ◽  
Design And Implementation ◽  
Technological Advances ◽  
History Of ◽  
Indoor Lighting

Technological advances allow us to control LED (Light Emitting Diode) lighting at home, in the office it can even allow us to change the intensity of the light and this is just the beginning of what the future holds for us. In this study an LED internal lighting fixture of our own design will be presented focusing on each step in its design. Firstly, the features, types and history of LEDs will be presented, next the products available in market that are required for the completion of the device. Finally, the design and implementation as well as the radio frequency controlled LED indoor lighting fixture will be shown.

scholarly journals Design of a Secondary Freeform Lens of UV LED Mosquito-Trapping Lamp for Enhancing Trapping Efficiency

Crystals ◽  
2018 ◽  
Vol 8 (9) ◽  
pp. 335 ◽  
Author(s):  
Wei-Hsiung Tseng ◽  
Diana Juan ◽  
Wei-Cheng Hsiao ◽  
Cheng-Han Chan ◽  
Hsin-Yi Ma ◽  
...  
Keyword(s):  
Light Intensity ◽  
Intensity Distribution ◽  
Light Emitting Diode ◽  
Trapping Efficiency ◽  
Axially Symmetric ◽  
Light Intensity Distribution ◽  
Light Emitting ◽  
Led Light ◽  
Uv Led ◽  
Freeform Lens

In this study, our proposed ultraviolet light-emitting diode (UV LED) mosquito-trapping lamp is designed to control diseases brought by insects such as mosquitoes. In order to enable the device to efficiently catch mosquitoes in a wider area, a secondary freeform lens (SFL) is designed for UV LED. The lens is mounted on a 3 W UV LED light bar as a mosquito-trapping lamp of the new UV LED light bar module to achieve axially symmetric light intensity distribution. The special SFL is used to enhance the trapping capabilities of the mosquito-trapping lamp. The results show that when the secondary freeform surface lens is applied to the experimental outdoor UV LED mosquito-trapping lamp, the trapping range can be expanded to 100π·m2 and the captured mosquitoes increased by about 300%.

scholarly journals A Supervisory Control Strategy for Improving Energy Efficiency of Artificial Lighting Systems in Greenhouses

Energies ◽  
2021 ◽  
Vol 14 (1) ◽  
pp. 202
Author(s):  
Gianluca Serale ◽  
Luca Gnoli ◽  
Emanuele Giraudo ◽  
Enrico Fabrizio
Keyword(s):  
Control Strategy ◽  
Light Emitting Diode ◽  
Cost Savings ◽  
Energy Performance ◽  
Lighting System ◽  
Light Emitting ◽  
Artificial Lighting ◽  
Lighting Control ◽  
Lighting Systems ◽  
Power Densities

Artificial lighting systems are used in commercial greenhouses to ensure year-round yields. Current Light Emitting Diode (LED) technologies improved the system efficiency. Nevertheless, having artificial lighting systems extended for hectares with power densities over 50W/m2 causes energy and power demand of greenhouses to be really significant. The present paper introduces an innovative supervisory and predictive control strategy to optimize the energy performance of the artificial lights of greenhouses. The controller has been implemented in a multi-span plastic greenhouse located in North Italy. The proposed control strategy has been tested on a greenhouse of 1 hectare with a lighting system with a nominal power density of 50 Wm−2 requiring an overall power supply of 1 MW for a period of 80 days. The results have been compared with the data coming from another greenhouse of 1 hectare in the same conditions implementing a state-of-the-art strategy for artificial lighting control. Results outlines that potential 19.4% cost savings are achievable. Moreover, the algorithm can be used to transform the greenhouse in a viable source of energy flexibility for grid reliability.

Thermal conduction characteristics of silicone composites including ultrasonic-treated graphite

2021 ◽  
pp. 002199832110595
Author(s):  
Weontae Oh ◽  
Jong-Seong Bae ◽  
Hyoung-Seok Moon
Keyword(s):  
Thermal Conductivity ◽  
Ultrasonic Treatment ◽  
Thermal Conduction ◽  
Light Emitting Diode ◽  
Thermal Interface Material ◽  
Ultrasonic Power ◽  
Lighting System ◽  
Thermal Interface ◽  
Light Emitting ◽  
Inorganic Oxides

The microstructural change of graphite was studied after ultrasonic treatment of the graphite. When the graphite solution was treated with varying ultrasonic power and time, the microstructure changed gradually, and accordingly, the thermal conductivity characteristics of the composite containing the as-treated graphite was also different with each other. Thermal conductivity showed the best result in the silicone composite containing graphite prepared under the optimum condition of ultrasonic treatment, and the thermal conductivity of the composite improved proportionally along with the particle size of graphite. When the silicone composite was prepared by using a mixture of inorganic oxides and graphite rather than graphite alone, the thermal conductivity of the silicone composite was further increased. A silicone composite containing graphite was used for LED (light emitting diode) lighting system as a thermal interface material (TIM), and the temperature elevation due to heat generated, while the lighting was actually operated, was analyzed.

scholarly journals PERANCANGAN ALAT PENDETEKSI KELAYAKAN OLI PADA KENDARAAN SEPEDA MOTOR BERBASIS ARDUINO UNO ATMEGA328

SIGMA TEKNIKA ◽  
2019 ◽  
Vol 2 (2) ◽  
pp. 179
Author(s):  
Muhammad Iirsyam
Keyword(s):  
Light Emitting Diode ◽  
Motor Vehicles ◽  
Light Reflection ◽  
Oil Viscosity ◽  
Light Emitting ◽  
Led Light ◽  
Detection Tool ◽  
Arduino Uno ◽  
Resistance Value ◽  
Oil Color

 AbstrakPada kendaraan bermotor pelumasan adalah suatu hal yang sangat penting. Pelumasan berfungsi untuk melumasi komponen logam atau metal yang bergesekan dalam mesin. Untuk menjaga performa mesin kendaraan tetap prima maka kita harus cermat dalam memilih jenis oli yang akan digunakan menurut tingkat kekentalan oli yang dibutuhkan oleh kendaraan yang kita gunakan. Selain itu pemeriksaan dan pergantian oli secara berkala berperan penting dalam menjaga awetnya mesin kendaraan.Untuk membantu dalam pengecekan oli bagi para pemilik kendaran bermotor dalam hal ini sepeda motor dalam itu peneliti merancang sebuah alat pendeteksi kelayakan oli pada kendaraan sepeda motor. Perubahan nilai resistansi dari sensor IR (Infrared Resistor) setelah menerima pantulan cahaya dari LED (Light Emitting Diode) yang diletakkan diatas permukaan oli menyebabkan tegangan yang diterima Arduino Uno microcontroller ATmega328 membaca perubahan warna oli pada sebuah baki oli sepeda motor. Kata kunci : Pengecekan oli, Pantulan cahaya LED, Arduino Uno   AbstractLubrication in motor vehicles is important, lubrication is not only serves to lubricate metal or metal touching or friction in the machine. To maintain the performance of the vehicle's engine is prime, we must carefully select the type of oil to be used according to the oil viscosity level required by the vehicle we use. In addition, inspection and oil change periodically play an important role in maintaining the vehicle's crew.To assist in oil checking for motorised owners in this motorcycle in this case the author devised an oil feasibility detection tool on a motorcycle vehicle. Changes in resistance value from IR sensor (Infrared Resistor) after receiving light reflection from LED (Light Emitting Diode) that is placed above the oil surface causing the received voltage Arduino Uno Microcontroller ATmega328 Read the changes Oil color on a motorcycle oil tray. Keywords: Oil checking, LED light reflection, Arduino Uno

scholarly journals Effects of Light-Emitting Diodes on the Accumulation of Glucosinolates and Phenolic Compounds in Sprouting Canola (Brassica napus L.)

Foods ◽  
2019 ◽  
Vol 8 (2) ◽  
pp. 76 ◽  
Author(s):  
Chang Park ◽  
Nam Kim ◽  
Jong Park ◽  
Sook Lee ◽  
Jong-Won Lee ◽  
...  
Keyword(s):  
Brassica Napus ◽  
Phenolic Compounds ◽  
Light Emitting Diode ◽  
Red Light ◽  
Dry Weight ◽  
Total Phenolic ◽  
Brassica Napus L ◽  
Light Emitting ◽  
Led Light ◽  
Sprout Growth

In this study, we investigated optimal light conditions for enhancement of the growth and accumulation of glucosinolates and phenolics in the sprouts of canola (Brassica napus L.). We found that the shoot lengths and fresh weights of red light-irradiated sprouts were higher than those of sprouts exposed to white, blue, and blue + red light, whereas root length was not notably different among red, blue, white, and blue + red light treatments. The accumulations of total glucosinolates in plants irradiated with white, blue, and red lights were not significantly different (19.32 ± 0.13, 20.69 ± 0.05, and 20.65 ± 1.70 mg/g dry weight (wt.), respectively). However, sprouts exposed to blue + red light contained the lowest levels of total glucosinolates (17.08 ± 0.28 mg/g dry wt.). The accumulation of total phenolic compounds was the highest in plants irradiated with blue light (3.81 ± 0.08 mg/g dry wt.), 1.33 times higher than the lowest level in plants irradiated with red light (2.87 ± 0.05 mg/g dry wt.). These results demonstrate that red light-emitting diode (LED) light is suitable for sprout growth and that blue LED light is effective in increasing the accumulation of glucosinolates and phenolics in B. napus sprouts.

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