Measuring And Controlling Method On Living Environmental Parameters For Leafy Vegetable

With the improvement of living standards,the demand of leafy vegetables grows up continuously.Leafy vegetable is a large category of vegetable,with high nutritional value,and growing area due to high economic value and demand.The mode of production of traditional leafy vegetable in China cannot meet the market demand,thus the mode of production of modern sunlight greenhouse has emerged,and the development of facility agriculture,greenhouse technology has been promoted continuously.In order to accelerate the growth of leafy vegetable,and create a good environment for the growth of leafy vegetable,it needs to control the growth environmental parameters to improve the growth of leaf vegetable.Modern greenhouse has invited the control system to realize the automatic management of greenhouse,but the existing greenhouse measurement and control system has the problem of big investment,high failure rate and maintenance inconvenience.Therefore,it is urgent to design a set of solutions to the above problems.The thesis is focused on the key parameter measurement and control methods of leafy vegetable growing environment and designed the measurement and control system.The system can measure and control the key parameters of the growth environment of leafy vegetable,including air temperature,air humidity,soil moisture content and light intensity.Using image sensor to record the plant growth condition,analyze and determine the measuring point in the greenhouse distribution point.The measurement and control system can measure,record,display and store the leafy vegetables growth environment key parameters.After computer processing,the data is sent to the greenhouse control equipment and implement through single-chip microcomputer.System hardware includes the sensors,the greenhouse control equipment,a computer,single chip microcomputer and relays.Designing the peripheral circuit of single chip microcomputers,electrical diagram,the greenhouse control equipment.The software includes measuring program.Based on VC-++development platform and MFC,the software and the control program of the measurement and control system is developed to realize the automatic control of the greenhouse.In this paper,a greenhouse measurement and control system is designed for leafy vegetable,which can be used to measure and control the key parameters of the greenhouse,and monitor the growth of leafy vegetable by using image sensors.The main research contents of this paper include the following parts:(1)Introduced the research background and significance of the project;(2)Designed a greenhouse measurement and control system according to the requirement of users;(3)Designed the hardware and software parts of the system according to the measurement requirements of the system;(4)Processed and analyzed the measurement experimental data;(5)Analyze the reliability of the greenhouse measurement and control system,and point out the direction for a step of research.