The Design And Research On Aerial Atmospheirc Parameter Calibration System

With the system based on the ARM-WinCE CNC system，this thesis has developed anintelligent instrument which haS measurement and control function of the aerial atmosphericparameter parameter device．The device may solve the urgently needed atmosphere datareflectoscope reflector to carry on the scene calibration question, satisfies in the currentprototype research and production the atmospheric measurement calibration anxious demand.According to the topic origin and the specification, have carried on the design to theatmosphere data reflectoscope reflector calibration system’s overall system, and in the overallconcept design’s foundation to hardware’s design, the software design and realized, thecalibration system calibration result uncertainty analysis and so on to conduct the quitethorough research.The calibration device is including main engine and air pump two parts. Main engine bycentral control CPU, static pressure and total pressure control circuit, static pressure and totalpressure control valve group, static pressure and total pressure master reference, staticpressure and total pressure control sensor and so on. The sensor uses two high accuracy topress sensor’s function is certainly carries on the survey to the air course pressure, andparticipates in the air course under the control model the trimming and micro controls; Thepressure control aspect uses based on the high-speed switch solenoid valve’s pressure controlsystem, it has the structure to be simple, the price is cheap, the operation reliable and isadvantageous for the computer control, may realize the air course trimming and microcontrols and so on merits; In order to increase the measuring accuracy, used had measuredthat the week law carried on the frequency measurement.In order to cause the calibration systems control to be more accurate, not only has usedthe traditional PID control mode, but also has used the intelligent control theory algorithm,carries on the control to the high speed solenoid valve, achieves to system’s total staticpressure precise output, with the aim of providing the normal pressure source, uses thepressure instrument for the model scientific research production to carry on the calibration.The ultimate analysis atmosphere data reflectoscope reflector calibrating device’suncertainty component, has analyzed A kind of uncertainty and B kind of uncertainty, throughthe formula synthesis entire calibration system’s uncertainty, the uncertainty result conformsto the technical specification which this topic proposed.After the confirmation, the atmosphere data reflectoscope reflector calibration system performance which develops is stable. Through calibrates and uses the calibration system’sautomated calibration data comparative analysis manually, finally indicated that thecalibration system achieved the technical specification which at the beginning of the systemdesign proposed, the function has been reliable, and had the very good operationality, couldsatisfy the practical work the need.