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| 加热型电子后视镜在不同场景使用下的数值仿真研究 |
| Study of numerical simulation of heated electronic rear-view mirror under diverse use scenarios |
| 投稿时间：2024-09-20 |
| DOI：10.3969/j.issn.1005-5630.202409200091 |
| 中文关键词: 主动加热 镜头除雾除霜 导电膜 电子后视镜 |
| 英文关键词:active heating lens defogging and defrosting conductive film camera monitor system lens |
| 基金项目: |
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| 中文摘要: |
| 本文建立了电-热-流多物理场耦合模型对镀有氧化铟锡薄膜的电子后视镜在零下、有风等恶劣环境下的加热除雾除霜效果开展了数值仿真研究。首先，搭建了一个环境温度分别为-10 ℃与0 ℃的镜头加热模型，通过比对实验测量不断修正物理模型，验证仿真结果与实验温度测量一致性，建立了可靠的数学模型；其次，对有风环境下的镜头加热物理过程进行求解，得到了不同温度、不同风速的镜头可视区中心的温度随时间变化一维曲线。仿真结果表明，在温度为-20 ℃、风速为1 m/s环境下，加热60 s后，镜头温度可达41.69 ℃；在温度为0 ℃、风速为10 m/s环境下，加热60 s后，镜头温度可达36.44 ℃，具有良好的除雾除霜功能。 |
| 英文摘要: |
| 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 ℃ and 0 ℃ 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 ℃ after heating for 60 s at a temperature of -20 ℃ and a wind speed of 1 m/s, and the lens temperature can reach 36.44 ℃ after heating for 60 s at a temperature of 0 ℃ and a wind speed of 10 m/s, which provides a good demisting and defrosting function. |
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