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针对大气湿度测量问题,提出一种基于敏感电路的露点测量方法.把考比兹电路中的石英晶体作为湿敏元件,用半导体制冷器对其进行制冷直到有结露产生时使得石英晶体处于液相环境中,整个考比兹电路将停止振动,利用考比兹电路这一敏感特性对露点进行识别,可以得到相应的露点温度.通过理论数据与实验数据对比分析,露点温度的最大误差为1.59℃,此方法可以从定性的角度作为一种湿度快速识别方法,并具有测量方法简单、灵敏度高、可靠性好和成本低等优点.
Aiming at the problem of atmospheric humidity measurement, a dew point measurement method based on sensitive circuit is proposed. The quartz crystal in the Cobauz circuit is used as a humidity sensor and is refrigerated by a semiconductor refrigerator until condensation occurs, so that the quartz crystal is in liquid Phase environment, the entire Cobbitz circuit will stop vibration, the use of the sensitivity of the Cobitz circuit to identify the dew point, you can get the corresponding dew point temperature.Compared with the theoretical data and experimental data, the maximum dew point temperature error of 1.59 ℃. This method can be used as a rapid identification method of humidity from the qualitative point of view, and has the advantages of simple measurement method, high sensitivity, good reliability and low cost.