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Differential dew point measuring method and device

A measurement method and a technology of a measurement device, which are applied in the direction of measurement devices, material moisture content, and material analysis through optical means, can solve the problems of low sensitivity of the chilled mirror dew point meter and affect the detection results, and achieve dust pollution. High sensitivity and reduced speed effect

Inactive Publication Date: 2011-07-20
马舒庆
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AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a differential dew point measurement method and device to solve the technical problems that the traditional chilled mirror dew point meter (or frost point meter) has low sensitivity and is easy to affect the final detection result due to falling dust

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  • Differential dew point measuring method and device
  • Differential dew point measuring method and device

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Embodiment Construction

[0022] Examples see figure 1 , figure 2 As shown, the steps of this differential dew point measurement method are as follows: Step 1. Set the ground glass 3 and the light glass 4 so that the condensation surfaces of the ground glass 3 and the light glass 4 are both downward, and the ground glass 3 and the light glass 4 are in thermal contact. Temperature controller 1, in the present embodiment, temperature controller 1 is a semiconductor temperature controller; Step 2, gathers the image on the condensation surface of frosted glass 3 and the condensation surface of light glass 4 with CCD camera 6, and the frosted glass that gathers is in The average brightness value V1 in the image and the average brightness value V2 of the light glass in the image are sent to the microcontroller 5 . Step 3: Use the formula condensation indicator parameter K=(V1-V2) / (V1+V2), use the microcontroller 5 to calculate the condensation indicator parameter K, when the condensation indicator paramete...

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Abstract

The invention discloses a differential dew point measuring method and a differential dew point measuring device. The device comprises a carrier, a temperature measurement sensor and a microcontroller for acquiring and processing temperature data and image data, wherein the carrier comprises frosted glass and polished glass, the condensation surfaces of which are downward; the frosted glass and the polished glass are inlaid in the lower port of a temperature controller; a refrigerator and a heater are arranged in the temperature controller; a charge coupled device (CCD) camera and a surface light source for lighting the condensation surface of the frosted glass and the condensation surface of the polished glass are arranged below the lower port of the temperature controller; and the temperature measurement sensor is arranged on the carrier and connected with the microcontroller. The device has the advantages of high sensitivity and low dust pollution influence; and because the condensation surfaces of the frosted glass and the polished glass are downward, the dust accumulating speed is reduced, and accuracy and precision of detection results are improved.

Description

technical field [0001] The invention relates to a method and device for measuring dew point temperature and frost point temperature. Background technique [0002] Under the condition of constant air pressure, when the humid air is cooled to the saturation of the water surface (or ice saturation), dew (or frost) will condense, and the temperature at this time is called the dew point temperature (or frost point temperature). And according to the formula or ( is the dew point temperature The saturated water vapor pressure of the water surface at frost point temperature The saturated water vapor pressure of the water surface at is the actual water vapor pressure), we can know that as long as the measured dew point temperature (or frost point temperature ), the actual water vapor pressure in the air can be calculated. In addition, the dew point temperature was measured (or frost point temperature ), the relative humidity of the air can also be calculated. ...

Claims

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Application Information

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IPC IPC(8): G01N25/68G01N25/56G01N21/84
Inventor 马舒庆
Owner 马舒庆
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