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在气象探测领域,温度传感器受到太阳辐射会导致其温度高于真实的大气温度,从而引起辐射误差。为提高测温精度,本文提出一种低辐射误差温度传感器设计,利用计算流体动力学方法(CFD)分析温度传感器在不同条件下的温度场分布情况。仿真实验结果表明:低辐射误差温度传感器具有较高的防辐射性能,其辐射误差低于传统温度传感器的辐射误差,银丝直径越小,辐射误差越低,有望降低辐射误差至0.05℃以内。
In the field of meteorology, temperature sensors are exposed to solar radiation that causes them to rise above their true atmospheric temperature, causing radiation errors. In order to improve the accuracy of temperature measurement, a low radiation error temperature sensor design is proposed in this paper. The temperature field distribution of temperature sensor under different conditions is analyzed by computational fluid dynamics (CFD). The simulation results show that the low-radiation error temperature sensor has high radiation protection performance and the radiation error is lower than that of the traditional temperature sensor. The smaller the silver wire diameter is, the lower the radiation error is and the lower the radiation error is expected to be within 0.05 ° C.