Solar LED Muitispectral Farmland Pests Trap Device Design Based On Microcomputer Control

With the development of science and technology and the progress of the society,people's living standards greatly improved today,people's food security and environmental protection consciousness also get larger ascension.On repeated exposure of the food safety problem now,you can see the importance of food safety and people's food security is becoming more and more high quality requirements.But because now in the process of agricultural production,chemical control as the main method of the broad masses of farmers usually just in the process of planting,simply increase the dose of chemical pesticides and spraying frequency to control plant diseases and insect pests.This caused the agricultural pesticide residues,seriously restricts the improvement of agricultural product quality safety.Moreover due to the development of the industry in China in recent years rapid constantly,energy utilization and shortage problem increasingly remarkable,in order to meet the current needs of agricultural production,the design of intelligent energy-saving pest prevention and control of physical device has very important economic significance.Purpose of this paper is based on the existing light traps in technology,depending on the night of farmland pests phototaxis characteristics and nocturnal period,based on AT89S52 single chip microcomputer control,the realization of LED lights in different times with different spectrum of light and lighting intelligent control of the length of time,has reached to a specific activity of farmland pests during trap,at the same time as far as possible reduced in the period of beneficial insects and natural enemies to be killed.The power of the device is a solar panels during the day the sun light,creates an electric current of photovoltaic effect;Current through professional lead-acid battery chip UC3906 charging controller,charging controller for battery charging,fully charged batteries that night as the device's power supply.As the sun slowly down the hill,gradually dim light of the outside world,the power switch circuit of photosensitive resistance became smaller,composed of 555 timer Schmitt trigger output comprised of low level jump into a high level,which relay on electricity and action,normally open switches off,device master AT89S52 to begin to work.MCU on electric start work after first test the temperature,humidity,the temperature and humidity detection circuit for the real-time detection of the surroundings outside the device,the collection of data into the micro-controller through the MCU I/O port,analyzing the data processing in the interior of the single chip microcomputer output the corresponding instructions:when the temperature and wet degrees are within reasonable bounds,single chip microcomputer controller output open timer circuit instruction,set a particular wavelength led light and high voltage power grid circuit open;Otherwise,the single chip microcomputer controller will keep the device on the surrounding environment of temperature and humidity testing,not output open timer circuit instruction,i.e.not connected to the LED driver circuit and high voltage power circuit.Compared with currently used similar units,the farmland pests trap device mainly has the following features:1.Using light-operated switch of Schmitt trigger,the installation of implementation of automatic electric function,improved the traditional manual switch,achieve the goal of high efficiency.2.In order to automatically switch on the LED circuit,drive circuit and high-voltage grid system controlled by single chip microcomputer technology,on the data of sensor's testing,so that more intelligent and energy saving.3.Using multi-spectral LED lamp,period of time regularly to trap activity exuberant farmland pests,reduces the other beneficial insects killing,make more targeted devices to trap insect pests.4.The device can be different according to the pest phototaxis wavelength,adjust the corresponding band LED lights,can also adjust the test ambient temperature and humidity range,the applicable scope...