Software Development Of Multi-Point True Temperature Measurement System

With the continuous development of aerospace,military,industry and other fields in C hina,temperature measurement,especially the research of high temperature measurement technology,becomes more and more important.The purpose of this project is to design software for a ten-target six-wavelength pyrometer,using multi-spectral radiation temperature measurement technology,so that the pyrometer can complete the temperature measurement of 1000 ?-2000 ?.At the same time,in the software design of true temperature inversion,multithreading is used to solve the problem of slow real temperature inversion of multiple targets by using secondary measurement method.This paper mainly introduces the software debugging,instrument calibration and accuracy test experiment.Software writing and debugging mainly includes data acquisition,data storage,temperature calibration,and data processing.It is written in C # language on Visual Studio 2015 pla tform.In the data acquisition part,the built-in function of usb5630 data acquisition card is used to realize the communication with the computer,and the acquisition mode,acquisition quantity and stop time of the acquisition card are controlled by the computer to complete the acquisition of zero point voltage,temperature calibration and temperature field measurement data;in the data storage part,the built-in storage file function of C is used to complete the storage of temperature calibration data in t he Access database,and other collected data are stored in the txt file;In the temperature calibration part,the mean value of the voltage data under the calibration temperature measured many times is used as the calibration data.;Data processing mainly uses the combination of brightness temperature approximation method and secondary measurement method,and uses multi-threaded programming to retrieve true temperature and emissivity.It also includes using the least square method to fit the bright temperature-voltage relationship curve and drawing the temperature change curve with time.After the software is written and debugged,it is proved by experiments that the temperature inversion accuracy of the pyrometer is less than 3%,which can fully meet the needs of the project.