scholarly journals CONTROL SYSTEM FOR TEMPERATURE, HUMIDITY AND TIME PARAMETERS ON ZELIO SMART RELAY-BASED WATERING PROCEDURES

2019 ◽  
Vol 1 (1) ◽  
pp. 12-16
Author(s):  
Irfan Arif ◽  
Akbar Sujiwa
Keyword(s):  
Control System ◽  
Ambient Temperature ◽  
Temperature Sensor ◽  
Humidity Sensor ◽  
Ambient Air ◽  
Air Humidity ◽  
Human Power ◽  
Temperature And Humidity ◽  
Time Parameters

Watering plants usually done manually using human power. that has risk negligence and inaccuracy. also, in time and cost is not efficient. Another factor that can affect the quality of crops is a factor of humidity and temperature. For those reason, writers made a tool that can work according to the level of humidity and temperature automatically and continuously. This tool uses Zelio Smart Relay as automatic controller. The 808H5V5 humidity sensor and LM35 temperature sensor is used as input. The LM35 temperature sensor detect the ambient temperature, where as 808H5V5 humidity sensor detect ambient air humidity, and time of watering adapted to the Smart Relay timer. The entire sensor input is programmed using ZELIO SOFT 2. Setting the temperature and humidity when the detected 30oC and >70% as well as the timeshows at 08.30 – 09.00 am and 16.00 – 16.30 pm the pump will automatically ON.

Research on Control System of Energy-Saving Greenhouse

2013 ◽  
Vol 448-453 ◽  
pp. 1312-1315
Author(s):  
Qun Li
Keyword(s):  
Control System ◽  
Energy Saving ◽  
Humidity Sensor ◽  
Environmental Parameters ◽  
Single Chip ◽  
Greenhouse Production ◽  
Temperature And Humidity ◽  
Digital Temperature Sensor ◽  
The Cost ◽  
Energy Intensive Industries

Energy-saving and environmental protection has become the theme of the 21st century. Greenhouse is an energy-intensive industries. Every year, 35% of energy consumption on agricultural production is used for greenhouse heating in the world, which accounts for 15-40% of the cost of greenhouse production. For improving energy efficiency and protecting the environment, the reasonable control of greenhouse environmental parameters is significant. The design of solar greenhouse real-time environment monitoring and automatic control system is based on 8051 single-chip in the thesis. The temperature and humidity signal are obtained from DS18B20 digital temperature sensor and IH3605 humidity sensor. When the greenhouse temperature exceeds the set temperature, the device can be started by perform timely processing, then the user can read LED digital display temperature and humidity values.

Arborização Urbana e Microclima e a Percepção dos Acadêmicos de Educação Física Quanto a Essa Vegetação

UNICIÊNCIAS ◽  
2017 ◽  
Vol 21 (2) ◽  
pp. 99
Author(s):  
Ana Paula Barreto ◽  
Joaquim Mauro Mathias Filho ◽  
Richard Mistura Felisbino ◽  
Marcelo Studart Hunger ◽  
Lucas Rissete Delbim ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Physical Activities ◽  
Tree Planting ◽  
Air Humidity ◽  
Urban Centers ◽  
Resident Population ◽  
Beneficial Effects ◽  
Temperature And Humidity

A crescente urbanização das cidades, muitas vezes, sem planejamento tem provocado sérios danos às condições ambientais e de qualidade de vida das pessoas. Os efeitos benéficos das áreas arborizadas no que diz respeito ao microclima – temperatura e umidade do ar - sempre foram inerentes no que diz respeito à melhoria da qualidade de vida da população. Neste sentido, o objetivo desta pesquisa foi realizar um estudo quantitativo quanto a influência da arborização urbana no microclima dos centros urbanos, analisando as diferenças de temperatura e umidade do ar em dois locais da região central do município de Mogi Guaçu-SP, com características semelhantes de área, destacando-se pela quantidade de unidades arbóreas, assim como verificar a percepção de sessenta acadêmicos do primeiro ao quarto período do curso de Educação Física da Faculdade FMG, Mogi Guaçu–SP quanto aos benefícios dessa vegetação para a população residente. Está bem estabelecida a função exercida pela arborização na redução do calor e insolação no ambiente urbano, conforto térmico e evapotranspiração com aumento da umidade do ar, desempenhando assim, uma importante função na melhoria das condições ambientais das cidades, favorecimento da prática de atividades físicas e qualidade de vida de seus habitantes.Palavras-chave: Microclima. Arborização Urbana. Atividade Física.AbstractThe increasing urbanization of cities, often unplanned, has caused serious damage to the environment and people’s quality of life. The beneficial effects of wooded areas in terms of microclimate - air temperature and humidity have always been inherent in improving the population’s quality of life. In this sense, the objective of this research was to carry out a quantitative study on the influence of urban afforestation on the microclimate of urban centers, analyzing the differences in temperature and humidity of the air in two locations in the central region of the municipality of Mogi Guaçu-SP with similar characteristics of area, highlighing the number of tree units, as well as to verify the perception of 60 scholars from the first to the fourth period of the Physical Education course of the FMG College, Mogi Guaçu-SP, regarding the benefits of this vegetation to the resident population. The role of tree planting in reducing heat and sunshine in the urban environment, thermal comfort and evapotranspiration with increased air humidity is well established, thus playing an important role in improving the environmental conditions of cities, favoring the practice of physical activities and Quality of life of its inhabitants.Keywords: Microclimate. Urban Arborization. Physical Activity.

Research of Inlet Air Quantity for Mechanical Cooling Tower

2014 ◽  
Vol 1044-1045 ◽  
pp. 388-391
Author(s):  
Bo Yang ◽  
Wen Zhou Yan ◽  
Liang Cai Chen
Keyword(s):  
Control System ◽  
Automatic Control ◽  
Air Temperature ◽  
Heat Load ◽  
Cooling Tower ◽  
Functional Relation ◽  
Ambient Air ◽  
Total Heat ◽  
Ambient Air Temperature ◽  
Temperature And Humidity

The functional relation of inlet air quantity, total heat load, ambient air temperature and humidity of the mechanical cooling tower was analyzed. The curves of inlet air quantity with total heat load, ambient air temperature and humidity were plotted by programing. The results show that the inlet air quantity will increase linearly with total heat load and with ambient humidity as well, but the influence was less. Finally the function of inlet air quantity for mechanical cooling tower is fitted. The function can calculate the inlet air quantity for automatic control system of mechanical cooling tower, to achieve the goal of energy saving.

Design of Intelligent Meteorological System Based on MEMS

2014 ◽  
Vol 609-610 ◽  
pp. 801-806
Author(s):  
Hao Wang ◽  
Meng Nie ◽  
Qing An Huang
Keyword(s):  
Control System ◽  
Intelligent Control ◽  
Temperature Sensor ◽  
Humidity Sensor ◽  
Sensor Data ◽  
Weather Station ◽  
Mems Sensors ◽  
Intelligent Control System ◽  
Speed Sensor ◽  
Multiple Sensor

Intelligent weather station system based on MEMS sensors is designed. The automatic meteorological system includes a MEMS temperature sensor, MEMS humidity sensor, MEMS pressure sensor, MEMS wind speed sensor and the sensor intelligent control system, etc. The intelligent control system has functions such as precise timing, multiple sensor data automatic acquisition, storage and uploading, which realizes the intelligent control of this weather station system.

Design of Library Temperature and Humidity Control System

2013 ◽  
Vol 760-762 ◽  
pp. 1038-1042
Author(s):  
Qing Min Gao ◽  
Lei Gao
Keyword(s):  
Control System ◽  
Automatic Measurement ◽  
System Structure ◽  
Humidity Control ◽  
Computer Data ◽  
Automatic Measurement System ◽  
Temperature And Humidity ◽  
Conditioning Equipment ◽  
And Control

This is a design based on the library temperature and humidity automatic measurement system and control system. Using modern information gathering techniques, computer data processing and control technology, through the choice of hardware devices and designing of software programs, it is feasible to achieve automatic detection of the library temperature and humidity parameters and control of air conditioning equipment. Demonstrated by engineering examples, the system structure is clear, stable and reliable. It has significantly improved the quality of preservation of books in the library, therefore, has a wide prospect in the field of library temperature and humidity control.

Design of Warehouse Temperature and Humidity Detection System

2013 ◽  
Vol 341-342 ◽  
pp. 1005-1008
Author(s):  
Xin Wang ◽  
He Pan ◽  
Hong Yan Gao
Keyword(s):  
Temperature Sensor ◽  
Humidity Sensor ◽  
Detection System ◽  
Humidity Control ◽  
Temperature And Humidity ◽  
Digital Temperature Sensor

With the wide application of temperature and humidity detection system, the requirements and standards of which in different industries and fields are various. After the analysis of domestic and foreign warehouse intelligent temperature and humidity control, the author has found a series of factors of that, and then puts forward a design of scheme of temperature and humidity detection system based on AT89S51, together with a plurality of digital temperature sensor DS18B20 and the humidity sensor HS1101, temperature and humidity detection system is formed.

Fogging for Evaporative Cooling Effects on Siemens V94.2 Gas Turbine Performance

2002 ◽  
Author(s):  
S. Brusca ◽  
R. Lanzafame
Keyword(s):  
Relative Humidity ◽  
Ambient Temperature ◽  
Gas Turbine ◽  
Control Strategies ◽  
Evaporative Cooling ◽  
Ambient Air ◽  
Air Humidity ◽  
Power Losses ◽  
Turbine Performance ◽  
Cooling Effects

In order to study the effects of ambient temperature and relative humidity on the performance of the Siemens V94.2 gas turbine, installed as a topper in an IGCC complex and fed with syngas, a mathematical model of the engine has been developed and implemented into GateCycle environment. The model was fine tuned using experimental data of plant. Thermodynamic analysis of the gas turbine performance, depending on ambient temperature and relative humidity, has been carried out. Results show the strong dependence of engine performance on ambient temperature (in the range from 30 °C to 40 °C). Theoretical and experimental results have been shown that ambient air humidity decreases power losses due to high external temperature. In order to optimize power production in this temperature range, an artificial humidifier was implemented into the model. Furthermore, “Fogging for Evaporative Cooling” technique effects on performance of the gas turbine have been studied. Using GateCycle model, simulations have been carried out as regards to temperature variation in the range which power losses occur. Two control strategies of the artificial air humidifier have been implemented: the first is characterized by an air humidity constant at the intake of the compressor (set to 95%); the second one is characterized by an air temperature constant at the intake of the compressor (set to the temperature corresponding to maximum IGV opening). For both control strategies, power losses recovery can be achieved depending on base air humidity and temperature. Applying the second control strategy, lower water consumption was achieved but a compression ratio very close to the limit value was observed.

scholarly journals DESIGN AND REALIZATION OF MONITORING SYSTEM FOR MEASURING AIR TEMPERATURE AND HUMIDITY, WIND DIRECTION AND SPEED

2006 ◽  
Vol 14 (3) ◽  
pp. 127-134 ◽  
Author(s):  
Ján Čimo ◽  
Bernard Šiška
Keyword(s):  
Wind Speed ◽  
Air Temperature ◽  
Wind Direction ◽  
Temperature Sensor ◽  
Humidity Sensor ◽  
Temperature Sensors ◽  
Air Humidity ◽  
Speed Sensor ◽  
Weather Stations ◽  
Better Than

An air humidity sensor based on the capacity principle and programmable digital air temperature sensors are designed in the work. The wind direction and wind speed sensor (anemometer) is based on the optoelectronic principle. Sensors register frequency impulses from the wind fan of the anemometer. Methods and materials conformable with modern electronics and informatics were used. The method of linear regression was used for calibration of sensors. The accuracy of an air temperature sensor was found better than 0,1 °C in the range from ‐55 to 125 °C, and an air humidity sensor was better than 1 % in the range from 0 to 98 %. The anemometer works in the range of wind velocity from 0 to 150 km.h−1 with accuracy better than 1 % to 90 km.h−1 and over 90 km/h better than 3 %. First of all these sensors were proposed for automatic weather stations widely used in the sector of agriculture (microclimatic weather stations), industry and for other technological operations where monitoring of temperature, wind speed, wind direction and humidity is required. The sensors will be used as models for educational purposes at the lessons of biometeorology and climatology too.

Effect of Ambient Temperature and Humidity on Combustion and Emissions of a Spark Assisted Compression Ignition Engine

2015 ◽  
Author(s):  
Yan Chang ◽  
Brandon Mendrea ◽  
Jeff Sterniak ◽  
Stanislav V. Bohac
Keyword(s):  
Ambient Temperature ◽  
Flame Propagation ◽  
Pressure Rise ◽  
Ambient Air ◽  
Maximum Pressure ◽  
Compression Ignition ◽  
Pressure Rise Rate ◽  
Auto Ignition ◽  
Rise Rate ◽  
Temperature And Humidity

Spark Assisted Compression Ignition (SACI) offers more practical combustion phasing control and a softer pressure rise rate than Homogeneous Charge Compression Ignition (HCCI) combustion, and improved thermal efficiency and lower NOx emissions than Spark Ignition (SI) combustion. Any practical engine, including one that uses SACI in part of its operating range, must be robust to changes in ambient conditions. This study investigates the effects of ambient temperature and humidity on stoichiometric SACI engine performance, combustion and emissions. It is shown that at the medium speed and load SACI test point selected for this study, increasing ambient air temperature from 20°C to 41°C advances combustion phasing, increases maximum pressure rise rate, causes a larger fraction of the charge to be consumed by auto-ignition (and a smaller fraction by flame propagation), increases NOx, and increases Brake Specific Fuel Consumption (BSFC). Increasing ambient humidity from 32% to 60% retards combustion phasing, reduces maximum pressure rise rate, causes a larger fraction of the charge to be consumed by auto-ignition and a smaller fraction by flame propagation, increases Coefficient of Variation of IMEP (COV) of IMEP, reduces NOx, and increases BSFC. These results show that successful implementation of SACI combustion in real-world driving requires a control strategy that compensates for changes in ambient temperature and humidity.

scholarly journals Indoor air quality of museums and conservation of textiles art works. Case study: Salacea Museum House, Romania

2019 ◽  
Vol 70 (01) ◽  
pp. 88-93
Author(s):  
INDRIE LILIANA ◽  
OANA DORINA ◽  
ILIES MARIN ◽  
ILIEȘ DORINA CAMELIA ◽  
LINCU ANDREEA ◽  
...  
Keyword(s):  
Indoor Air ◽  
Air Humidity ◽  
Fungal Contamination ◽  
Data Logger ◽  
Textile Materials ◽  
Art Works ◽  
Temperature And Humidity ◽  
Data Function

The present paper is analyzing the quality of the air (temperature, humidity, light, contamination with fungi) inside the Museum House from Salacea, Bihor county, and the influence of such factors on textile materials that are exposed inside it in the context of the need to protect the heritage elements and in order to diminish the risks related to human health: the inhabitants, the tourists, museographers and all those who have access to the interior. Monitoring of the temperature and humidity was carried out between 03.06.2018 and 02.07.2018 and we used the thermo-hygrometer with data function logger KlimaLogg Pro (seven sensors), and for other analyzed parameters: Luxmeter data logger Extech SDL400 Oxygen meter Extech SDL150. The fungal contamination was determined using Koch sedimentation method. Due to the fact that the low temperature together with the high air humidity of the ambient environment stimulates the formation of microorganisms and mold and high temperatures can dehydrate the fibers by diminishing their strength and decreasing their elasticity, therefore it is necessary to maintain the standard micro climate of temperature and humidity inside the museum house.

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