Research And Implementation Of Comprehensive Error Compensation Technology Non-contact Temperature Measurement

The body temperature of a human body physiological indicators, many diseases are associatedwith changes in body temperature occurs characteristics. SARS in2003and the outbreak of avianflu in2009, the body temperature infections preliminary screening conditions. When large-scaleinfectious disease outbreak, the traditional mercury thermometer with emerging electronicthermometers are unable to meet the requirements of rapid temperature. The contact thermometereasily transmitted disease, widely used as a non-contact temperature measurement on behalf of theinfrared thermometer. Handheld ear thermometers, forehead Wenyi large infrared security doorsand infrared cameras have a lot of use. Handheld infrared thermometer needs to be hand-held bythe staff, if the improper operation likely to cause measurement error, where large flow of peoplecan not get to the large-scale use. Infrared camera capable of infrared images of the human bodyand find the highest point of the temperature with precision, but expensive. This selection of a goodthe MLX90614infrared thermometer, infrared temperature measurement system is designed to beable to automatically correct measurement error, automatic rapid temperature, and imageacquisition can automatically detect fever patients.This paper first introduces the development history of the thermometer, and then compare thestrengths and weaknesses of the existing market thermometer. From the contact thermometershortcomings and needs of the market leads to non-contact thermometer. Do a simple introductionto the principles of infrared temperature measurement in order to be able to more in-depthunderstanding of infrared temperature measurement, the article uses part of the chapter, on the basisof the theory to explore the impact of infrared temperature measurement accuracy factors, therelationship between skin temperature and body core temperature. Infrared thermometerMLX90614, DS18B20, ultrasonic circuit produced infrared temperature measurement system, theanalysis of the factors affecting the infrared temperature measurement accuracy fromenvironmental factors from the coefficients, emissivity, and finally draw distance changesMLX90614infrared thermometer The greatest impact on temperature measurement accuracy. Inorder to be able to get the maximum performance of the play in its measurement distance infraredthermometer, infrared temperature measurement system increased distance compensation. Throughthe acquisition of a large number of infrared temperature, the target temperature and distanceamong data from Matlab fitting error compensation formula error compensation.Increase the temperature measurement of infrared temperature measurement system for the infrared temperature measurement system more intelligent and humane, target exceeds the settemperature value system automatically capture images. When the the thermometer temperatureexceeds the set value after transplantation in the ARM Linux system using a USB cameraacquisition target image is stored to the SD card, and through the LCD to display images collectedwith temperature. Finally, the infrared thermometry system for testing, the results show that thesystem of60cm infrared temperature the good error compensation, so that the measurement error iskept within an error range of the system itself. The innovation of the paper is to lower costs andreduce the errors of the infrared thermometer, has expanded its range of temperature measurement,high temperature automatic collection of patient images and records.