加热型电子后视镜在不同场景使用下的数值仿真研究

打开文本图片集

中图分类号： TN253 文献标志码：A

Abstract： In this paper， a coupled mathematical model of electric-thermal-fluid multi-physical field is established to carry out a numerical simulation study on the heating，defogging and defrosting effect of electronic rear-view mirrors in harsh environments such as subzero and windy environments. Firstly， a lens heating model with ambient temperatures of -10∘C and 0∘C was constructed， and a physical model was continuously revised through comparative experimental measurements to verify the consistency between simulation results and experimental temperature measurements. As a result， a reliable mathematical model was successfully developed. Secondly， the physical process of lens heating in windy environments was solved，and the one-dimensional curve of the temperature change with time in the center of the lens visible area was obtained for different temperatures and different wind speeds.The simulation results show that the lens temperature can reach 41.69∘C after heating for 60s at a temperature of -20°C and a wind speed of 1m/s ，and the lens temperature can reach 36.44∘C after heating for 60s at a temperature of 0∘C and a wind speed of 10m/s ， which provides a good demisting and defrosting function.

Keywords： active heating; lens defogging and defrosting; conductive film; camera monitor system lens

近年来，随着汽车市场的不断成熟，光学仪器、电子影像等技术的持续发展，电子后视镜（cameramonitorsystem，CMS）应运而生。（剩余8105字）