Research And Improvement Of Laser Raindrop Spectrometer

With the continuous development of economic society,the weather phenomenon as the key meteorological factors are important factors gradually become an important part of human development.Precipitation phenomenon is one of the most important component of the weather phenomenon,has attracted more and more the concern of the state and society organization.Main precipitation phenomenon is the comprehensive result of atmosphere and clouds.For his many research methods,from manual observation to the instrument automation observation are condensed the human great scientific research achievements and efforts.In order to more stable and reliable,real-time and effective observation precipitation phenomenon,change the current domestic can't automatic detection of the present situation of the precipitation phenomenon,according to the existing observation technology at home and abroad and the latest principle of optical detection technology,puts forward the laser raindrop spectrum detection method based on the principle of optical design and improvement.This paper first introduces the research background and significance of the selected topic,and introduces the parameters of precipitation particles and precipitation model.Secondly,introduced the method of detection method of weather phenomena and past most newly developed observation system introduction and comparison,explore the differences and the pros and cons of objective evaluation of the use of the means of observation,pointed out the shortcoming of the method and needs to be improved and the main detection methods are proposed in this paper:Based on optical principle,structure design of laser raindrop spectrometer has been studied by using the propagation characteristics of light.And then introduces the core processing unit TMS320F28335,for its rich resources on chip are introduced,and the design of hardware circuit together with the need for these resources,including the transmitter receiver detector light source driving circuit,signal acquisition circuit,the control of the analog conversion part,serial output circuit,the output clock signal circuit part.Finally,gives a simple introduction to design system initialization,timer,AD conversion and serial communication system,and at the end of the article made on laser disdrometer future ambition and put forward with the required improvements.This paper introduces the raindrops on the basis of the principle of optical spectrum instrument of the research significance,implementation principle,the characteristics of different kinds and laser raindrop spectrometer of the hardware and software structure.Article mainly feed on the structure study and improvement of laser raindrop spectrum instrument,concrete improvement is mainly embodied in the laser raindrop spectrometer on the hardware structure of every detail.Improvement direction is mainly aimed at raindrop spectrometer of three major parts:transmitting terminal and receiving end and control end.On their driving circuit,detecting circuit and control circuit is made up from components to circuit principle diagram of research and improvement,basically achieved accuracy,stability and reliability of signal transmission.