A Study on the Optimal Offset Distance Between a Welding Torch and the Infrared Thermometers

Detection of weld defects using real-time monitoring and controlling algorithm is of the significant task in manufacturing industries due to the increased production and liability costs that result when weld defects are not identified early in the production cycle.Monitoring and controlling for robotic arc welding process employed should be reliable,flexible and cost-effective in non-clean,high-volume production environments.Also,the robotic welding system has been utilized a complex jigging and mechanical devices to move the workpiece which related to the stationary welding head for getting higher efficiency and lower costs.To develop the fully robotic welding system,people make use of their senses of sound and/or sight to collect welding information,and take the necessary corrective measurements to ensure the weld quality after processing is satisfactory.Therefore,it is really required that the monitoring and controlling algorithm of sensors for increasing effectiveness in the robotic welding process has been developed.In this paper,bead-on-plate welding using an infrared thermography in the robotic GMA(Gas Metal Arc)welding process has been performed to study the effects of welding parameters on thermal profile characteristics and find the optimal offset distance which applied for monitoring and controlling of welding quality such as bead height.The analysis for correlation between temperature distributions at three offset distance and bead height which based on the regression analysis such as Standard Error of Estimate(SEE),the coefficient of correlation(R)and coefficient of determination(R2)and(Predictive Ability of Model)has been done.The infra-red sensor is useful for monitoring the isotherm radii that arise during the robotic welding process and identifying bead height as welding quality.

Investigation on the Application Value of Infrared Forehead Temperature Gun in Body Temperature Screening of New Crown Epidemic

The outbreak of the novel coronavirus pneumonia has had a great impact on the life safety of our people and social production activities.Therefore,it is very important and meaningful to analyze the application value of infrared forehead thermometers in body temperature screening under the new crown pneumonia epidemic and propose improved measures for body temperature detection.This paper summarizes the questionnaire on the application value of infrared forehead thermometer in body temperature screening and the results of staff interviews,and analyzes the principle of infrared forehead thermometer temperature measurement to explain the factors that affect the accuracy of temperature measurement results.Finally,it is concluded that the reflected radiation of the environment and the temperature measurement distance affect the accuracy of the temperature measurement results of the infrared forehead gun.

Use of infrared emission detection thermometer in Chinese neonates

Objective To evaluate the reproducibility of ThermoscanTM, an inf rared emission detection ear thermometer, and to establish the normal reference range of ear temperature in Chinese neonates Methods Neonates were recruited from the inpatients population with e xclusion of those suffering from infections Results Fortynine neonates were recruited with 1?115 temperature tak in g sessions Mean left ear temperature was 3664035 Mean right ear te mper ature was 3664037 Clinical repeatability for left and right ear was 017 and 017, respectively Conclusion Thermoscan produced reproducible results in Chinese neonates The normal range of ear temperature for Chinese neonates is 35 to 37 Ea r temperature >378 should be regarded as fever