Design of Control System Based on Siemens (LOGO!) for Vegetable Greenhouse

2014 ◽  
Vol 513-517 ◽  
pp. 3300-3304
Author(s):  
Shu Ce Zhang ◽  
Yong Liu ◽  
Xiao Meng Li ◽  
Xue Jun Wang ◽  
Jin Shi Lu ◽  
...  
Keyword(s):  
Soil Moisture ◽  
Control System ◽  
Light Intensity ◽  
Air Humidity ◽  
Controlling System

Timely monitoring and controlling light intensity,temperature,air humidity, soil moisture by Siemens (LOGO!) and analyzing and regulating,which comprised the controlling system for vegetable greenhouse. Controlling greenhouse shutter, filling light, moisturizing, dehumidifying and ventilating for vegetables automatically or artificially, the robust growth of vegetables is achieved in relatively appropriate environment in greenhouse.

scholarly journals Autecology of Begonia in Several Locations of Flores Island

2021 ◽  
Vol 15 (1) ◽  
pp. 4-12
Author(s):  
Sutomo Sutomo ◽  
Rajif Iryadi
Keyword(s):  
Multivariate Analysis ◽  
Soil Moisture ◽  
Light Intensity ◽  
Forest Floor ◽  
National Park ◽  
Natural Habitat ◽  
Air Humidity ◽  
Factor B ◽  
Slope Factor ◽  
Minimum Interval

Human activities in forest areas such as over-harvesting of Begonia species without being balanced with their cultivation activities can threaten the existence of Begonia in nature. Autecological studies of species in their natural habitat are the initial activities for the conservation of plant species. The purpose of this study was to study the distribution of Begonia on Flores and environmental/ microclimate characteristics in several locations on Flores Island. The 10x10 m plots were placed with purposive sampling with a minimum interval of 50 m. Multivariate analysis using Canonical Corespondence Analysis (CCA) was employed to determine the effect of microclimatic factors on the composition of vegetation. Begonia kelimutensis is endemic in Kelimutu National Park, Flores lives at an altitude of 1,527 asl, at soil pH 5,8 and soil moisture of 75%, with a slope of 10 ° on the forest floor and light intensity 4,640 klux. In addition, five types of Begonia that we estimate have not been identified and two of them are identified as Begonia sumbawaensis Girm. and Begonia brangbosangensis Girm. Begonia kelimutuensis is distributed at a higher altitude than Begonia brangbosangensis. B. sumbawaensis is influenced by the slope factor while B. longifolia tends to be related to the air humidity factor. B. kelimutuensis is also often found living with Macaranga sp., and Litsea sp. B. brangbosangensis, also found near Homalanthus sp. and Calliandra callothyrsus.

scholarly journals An Energy-efficient Microcontroller-based Smart Light Controlling System

2021 ◽  
Author(s):  
Md. Saidul Islam ◽  
Sumon Chandra Debnath ◽  
Md. Sadequl Azam ◽  
Mashudur Rahaman ◽  
Md. Azizul Hoque ◽  
...  
Keyword(s):  
Control System ◽  
Light Intensity ◽  
Energy Efficient ◽  
Power Loss ◽  
Motion Sensor ◽  
Intensity Data ◽  
Light Control ◽  
Controlling System ◽  
Lcd Display ◽  
Pcb Layout

In this work, an energy-saving smart light controlling system has been proposed that can main-tain the desired intensity of light in a room automatically. Unlike the conventional light control system, the proposed system splits a large room into several zones and analyzes the light inten-sity of each zone; hence, the controlling unit adjusts the light intensity to the desired level. The main controlling unit consists of a light sensor, a motion sensor, a relay with a driver unit, an LCD display, etc. for controlling light efficiently to reduce the power waste. The sensors meas-ure the intensity of light, based on the standard light intensity data chart the controller units make a decision how many light bulbs are needed to be switched ON/OFF in a particular zone. Moreover, the system automatically switched-OFF all light bulbs when there is nobody in the room. Proteus design suite 8.0 is used to design and simulation of the proposed system. Moreo-ver, the PCB layout is designed using ExpressPCB version 7.5.0. The proposed system is capable of minimizing the power loss by up to 44% in comparison to the conventional light manage-ment system.

scholarly journals Peran Levers of Control Terhadap Hubungan Antara Perencanaan Strategis dan Kinerja UMKM

2019 ◽  
Vol 1 (3) ◽  
pp. 166-174
Author(s):  
Praja Hadi Saputra ◽  
Hamid Bone ◽  
Indah Permatasari
Keyword(s):  
Control System ◽  
Sem Analysis ◽  
Management Control ◽  
Strategy Formulation ◽  
Management Control System ◽  
Controlling System ◽  
Mediation Hypothesis ◽  
Indirect Relationship ◽  
Levers Of Control

This study investigates the role of levers-of-control (LOC) based controlling system in the strategy formulation and MSME performance relationship in Samarinda. Through a survey conducted on the leadership (controller) of MSMEs in Samarinda City, this study evidenced the role of management control systems in the strategy formulation and MSME performance relationship. Of the 49 responses of MSME leaders, processed using PLS-SEM analysis, this study provided empirical evidence that the strategy formulation had a positive relationship with MSME performance. In addition, the indirect relationship between the two (mediation) through LOC-based management system supported the mediation hypothesis that the LOC-based management control system affects the strategy formulation and MSME performance relationship. In other words, it can be concluded that the management control system can increase the strategy formulation role that leads to MSME performance betterment.  

scholarly journals Developing a Control System in Order to Determine the Role of Economy

2018 ◽  
Vol 7 (4.36) ◽  
pp. 904
Author(s):  
Krylov A.A ◽  
Pobyvayev S.A ◽  
Selivanov A.I ◽  
Silvestrov S.N ◽  
Starovoitov V.G ◽  
...  
Keyword(s):  
Control System ◽  
Economic Security ◽  
Asian Countries ◽  
Russian Science ◽  
Security Systems ◽  
Controlling System ◽  
Wide Range ◽  
National Economic ◽  
National Economic Security

The task of the authors was to develop a certain control system to identify the role of country economic security in the Eurasian integration. To this end, the approaches to economic security in Europe, Russia and Asian countries are analyzed. The differences in the methods of controlling the national economic security and in the key approaches to its provision are primarily due to the historically established internal economic and geo-economic conditions. There is a fairly wide range of paradigms of controlling system implemented in national economic security, primarily the differences between the European approaches and the approach of Russia.  Given information based on mentioned control systems revealed that principles and mechanisms of organization of national economic security systems in Asian countries is practically absent in Russian science. It was also necessary to analyze the typology of control monitoring system in order to clarify the prospects of integration of national economic security systems. The authors substantiate the position that ensuring national economic security is an important imperative of integration and development in the Eurasian space, competitiveness and economic sovereignty of countries. The article systematically organizes the facts about the types of organization of national economic security, explains the need for the countries of Eurasia active control system of economic security as a response to the challenges of our time. The authors express a certain control syste, of Eurasian integration in the field of national security, involving both sovereignty and harmonization of national systems aimed at protecting economic interests.  

scholarly journals Design of Greenhouse Automation with Arduino

2018 ◽  
pp. 41-45
Author(s):  
Erkan Unal ◽  
Kadir Ekmekci ◽  
Berkan Yilmaz ◽  
Ali Emre Kiziltuna ◽  
Muhammet Tahir Guneser
Keyword(s):  
Soil Moisture ◽  
Light Intensity ◽  
Data System ◽  
Automation System ◽  
And Control

In this study, a greenhouse automation system was designed by using Arduino Mega card. This system was planned to display and control the greenhouse data system, which is including humidity, light intensity, soil moisture and temperature for the process from sowing of plant to harvesting, was planned for various plants. The system was designed compatible with soil or the landless greenhouses systems.

Effect of Climate Change on Agricultural Production

2022 ◽  
pp. 99-114
Author(s):  
Helena Esteves Correia ◽  
Daniela de Vasconcelos Teixeira Agu Costa
Keyword(s):  
Climate Change ◽  
Environmental Factors ◽  
Light Intensity ◽  
Soil Water ◽  
Agricultural Production ◽  
Co2 Concentration ◽  
Atmospheric Co2 ◽  
Air Humidity ◽  
Ozone Level ◽  
Average Temperature

Agricultural production is influenced by environmental factors such as temperature, air humidity, soil water, light intensity, and CO2 concentration. However, climate change has influenced the values of average temperature, precipitation, global atmospheric CO2 concentration, or ozone level. Thus, climate change could lead to different situations on plants and consequently influence agricultural production. With this chapter, the authors intend to research how climate change influences some plant metabolisms (such as photosynthesis, photorespiration, transpiration, among others) and therefore agricultural production.

Effect of Interspecific Interference, Light Intensity, and Soil Moisture on Soybean (Glycine max), Common Cocklebur (Xanthium strumarium), and Sicklepod (Cassia obtusifolia) Water Uptake

Weed Science ◽  
1993 ◽  
Vol 41 (4) ◽  
pp. 534-540 ◽  
Author(s):  
Ronald E. Jones ◽  
Robert H. Walker
Keyword(s):  
Soil Moisture ◽  
Light Intensity ◽  
Leaf Area ◽  
Water Uptake ◽  
Root Weight ◽  
Pressure Potential ◽  
Unit Leaf Area ◽  
Unit Leaf ◽  
Shoot Weight ◽  
The Relationship

Greenhouse and growth chamber experiments with potted plants were conducted to determine the effects of interspecific root and canopy interference, light intensity, and soil moisture on water uptake and biomass of soybean, common cocklebur, and sicklepod. Canopy interference and canopy plus root interference of soybean with common cocklebur increased soybean water uptake per plant and per unit leaf area. Root interference with soybean decreased common cocklebur water uptake per plant. Canopy interference of soybean with sicklepod increased soybean water uptake per unit leaf area, while root interference decreased uptake per plant. Combined root and canopy interference with soybean decreased water uptake per plant for sicklepod. Soybean leaf area and shoot weight were reduced by root interference with both weeds. Common cocklebur and sicklepod leaf area and shoot weight were reduced by root and canopy interference with soybeans. Only common cocklebur root weight decreased when canopies interfered and roots did not. The relationship between light intensity and water uptake per unit leaf area was linear in both years with water uptake proportional to light intensity. In 1991 water uptake response to tight was greater for common cocklebur than for sicklepod. The relationship between soil moisture level and water uptake was logarithmic. Common cocklebur water uptake was two times that of soybean or sicklepod at −2 kPa of pressure potential. In 1991 common cocklebur water uptake decreased at a greater rate than soybean or sicklepod in response to pressure potential changes from −2 to −100 kPa.

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