A dew point sensor measures air humidity and prevents the Windows from misting.
车内的露水传感器能测量空气湿度，避免车窗出现水汽。
The sensor is composed of pyroelectric refrigerator and semiconductor detector, and controlled by a operator without model, In this way the air dew-point can be measured on line.
使用金硅势垒探测器及热电式致冷器构成传感器，并利用无模型控制器进行控制，实现气体露点的在线检测。
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