scholarly journals Greenhouse Monitoring System Using IOT

2020 ◽  
Vol 22 (12) ◽  
Author(s):  
Sahil Kumar ◽  
◽  
Raj Ranjan Kumar ◽  
Sonu Kumar ◽  
Chincholkar Y. D ◽  
...  
Keyword(s):  
High Temperature ◽  
Light Intensity ◽  
Soil Temperature ◽  
Mobile Device ◽  
Pump Light ◽  
Water Pump ◽  
Light Bulb ◽  
Heat Lamp ◽  
Turn On ◽  
Specific Amount

This project is based on human less maintenance of agriculture . In this the moisture of the soil, temperature and light intensity of the place will maintained automatically. Although we can predict the upcoming weather, there can be changes like sudden rain or harsh sunlight. These unpredicted changes in weather can destroy the crops. To avoid this, this system will automatically maintain the conditions which are favorable for the crops. If there is sudden rain and if the temperature is too low for the crops, the system will turn on the heat lamp due to which the temperature will be maintained. If due to high temperature, the moisture of the soils gets reduced, the system will turn on the water pump to maintain the moisture. Some crops need specific amount of light. If there is a situation that the surrounding light is low for the crops, then the system will turn on the light bulb to maintain the light intensity. In all these situations the farmer need not to run behind things like turning on water pump, light bulb, fan, etc. This system will take care of the maintenance of agriculture. All this data will be transmitted to the mobile device of the farmer.

scholarly journals Karakterisasi Sensor LDR dan Aplikasinya pada Alat Ukur Tingkat Kekeruhan Air Berbasis Arduino UNO

2019 ◽  
Vol 7 (2) ◽  
pp. 179-186
Author(s):  
Bowo Eko Cahyono ◽  
Keyword(s):  
Light Intensity ◽  
System Design ◽  
Measuring Instruments ◽  
Purification Process ◽  
Water Pump ◽  
Water Turbidity ◽  
Turn On ◽  
Measurement Results ◽  
Back Scattering ◽  
Precision Level

A system of monitoring turbidity levels in real time using an LDR sensor has been designed and implemented. This study aims to characterize the LDR sensor and subsequently the results are used as a basis in the application of the deterioration system design for water turbidity levels. The characterization results show that the LDR sensor has a linearity of 90.86% and sensitivity of 0.0082 mV per lux. After being applied in measuring instruments the light intensity of the sensor has a precision level of 92.58% and the level of accuracy of the measurement results is an average of 87.89%. Based on the results of the design that has been carried out this instrument is able to turn on the water pump for the purification process automatically when the intensity of back scattering is less than 72 lux

Characteristics of Photosynthesis in Different Wheat Cultivars under High Light Intensity and High Temperature Stresses

2009 ◽  
Vol 34 (12) ◽  
pp. 2196-2201 ◽  
Author(s):  
Xue-Li QI ◽  
Lin HU ◽  
Hai-Bin DONG ◽  
Lei ZHANG ◽  
Gen-Song WANG ◽  
...  
Keyword(s):  
High Temperature ◽  
Light Intensity ◽  
High Light Intensity ◽  
High Light ◽  
Wheat Cultivars ◽  
Temperature Stresses

Superior Short Circuit Performance of 1.2kV SiC JBSFETs Compared to 1.2kV SiC MOSFETs

2019 ◽  
Vol 963 ◽  
pp. 797-800 ◽  
Author(s):  
Ajit Kanale ◽  
Ki Jeong Han ◽  
B. Jayant Baliga ◽  
Subhashish Bhattacharya
Keyword(s):  
High Temperature ◽  
Short Circuit ◽  
Switching Loss ◽  
Switching Circuit ◽  
Inductive Load ◽  
Circuit Performance ◽  
Switching Performance ◽  
Turn On ◽  
Switching Losses ◽  
High Side

The high-temperature switching performance of a 1.2kV SiC JBSFET is compared with a 1.2kV SiC MOSFET using a clamped inductive load switching circuit representing typical H-bridge inverters. The switching losses of the SiC MOSFET are also evaluated with a SiC JBS Diode connected antiparallel to it. Measurements are made with different high-side and low-side device options across a range of case temperatures. The JBSFET is observed to display a reduction in peak turn-on current – up to 18.9% at 150°C and a significantly lesser turn-on switching loss – up to 46.6% at 150°C, compared to the SiC MOSFET.

Environmental Influence on the Tolerance of Corn to Atrazine

Weed Science ◽  
1970 ◽  
Vol 18 (4) ◽  
pp. 509-514 ◽  
Author(s):  
Lafayette Thompson ◽  
F. W. Slife ◽  
H. S. Butler
Keyword(s):  
Zea Mays ◽  
High Temperature ◽  
Low Temperature ◽  
Light Intensity ◽  
Environmental Influence ◽  
High Light Intensity ◽  
High Light ◽  
Growth Chamber ◽  
Peptide Conjugates ◽  
Before And After

Corn(Zea maysL.) in the two to three-leaf stage grown 18 to 21 days in a growth chamber under cold, wet conditions was injured by postemergence application of 2-chloro-4-(ethylamino)-6-(isopropylamino)-s-triazine (atrazine) plus emulsifiable phytobland oil. Injury was most severe when these plants were kept under cold, wet conditions for 48 hr after the herbicidal spray was applied, followed by exposure to high light intensity and high temperature. Under these growth chamber conditions, approximately 50% of the atrazine-treated plants died. Since wet foliage before and after application increased foliar penetration and low temperature decreased the rate of detoxication to peptide conjugates, atrazine accumulated under cold, wet conditions. This accumulation of foliarly-absorbed atrazine and the “weakened” conditions of the plants grown under the stress conditions is believed to be responsible for the injury to corn. Hydroxylation and the dihydroxybenzoxazin-3-one content in the roots were reduced at low temperature, but it is unlikely that this contributed to the death of the corn.

scholarly journals Testing Off-the-Shelf Optical Wireless LANs for Smart City Environments

Sensors ◽  
2021 ◽  
Vol 21 (16) ◽  
pp. 5451
Author(s):  
Loreto Pescosolido ◽  
Emilio Ancillotti ◽  
Andrea Passarella
Keyword(s):  
Light Intensity ◽  
Mobile Devices ◽  
Mobile Device ◽  
Smart City ◽  
Smart Cities ◽  
Wireless Lans ◽  
Optical Wireless ◽  
Operational Conditions ◽  
Stable Throughput ◽  
Indoor Scenarios

Optical wireless LANs (OWLs) constitute an emerging networking paradigm for indoor scenarios’ fit to different smart cities’ fields of applications. Commercial products employing this technology have been made available on the market in recent years. In this work, we investigate, through a set of indoor communication experiments based on commercially available products, how different environmental and usage modes affect the performance of the system, addressing the presence of multiple users, the position and mobility of the mobile devices, the handover among adjacent cells and the effect of background lighting. Our finding shows that the system is quite robust with respect to the variation of operational conditions. We show that, in most conditions, the links can reliably sustain a stable throughput, achieving at least 50% of the throughput achieved with using the maximum light intensity of the transmitting lamp, while they are affected in a very mild way by factors like position and height of the mobile device, and virtually unaffected by variations in the background light.

Vegetative and Fruiting Responses of Tomatoes to High Temperature and Light Intensity

1953 ◽  
Vol 114 (4) ◽  
pp. 449-460 ◽  
Author(s):  
S. P. Johnson ◽  
Wayne C. Hall
Keyword(s):  
High Temperature ◽  
Light Intensity

Factors Affecting the Herbicidal Activity of TCA on Green Foxtail

Weed Science ◽  
1972 ◽  
Vol 20 (2) ◽  
pp. 172-176 ◽  
Author(s):  
Paul N. P. Chow
Keyword(s):  
High Temperature ◽  
Light Intensity ◽  
Sodium Salt ◽  
Trichloroacetic Acid ◽  
High Light ◽  
Herbicidal Activity ◽  
Setaria Viridis ◽  
Factors Affecting ◽  
Leaf Stage ◽  
Green Foxtail

Growth of green foxtail (Setaria viridis (L.) Beauv.) was effectively controlled in the greenhouse by applying the sodium salt of trichloroacetic acid (TCA) as a postemergence treatment, when a rate of 0.84 kg/ha was used; when application preceded the two-leaf stage; and when 2.54 mm of water were available daily for moving TCA into the soil. There were significant interactions of TCA rate with light intensity, temperature, and source of seeds on the response of green foxtail. Seedhead production was curtailed at rates of 0.56 kg/ha or above when plants were grown under high light intensities (19,250 to 22,000 lux) and at moderate temperatures (20 to 22 C). Rates of 1.68 kg/ha or more were required to stop heading of foxtail grown at high temperature (27 C).

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