Capacitance type moisture condensation sensor

A sensor, capacitive technology, applied in the field of sensors, can solve the problems of changes in the characteristics of induction, time-consuming and laborious, and large deviation of monitoring results.

Inactive Publication Date: 2014-01-22
CMA METEOROLOGICAL OBSERVATION CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, if the moisture-sensing resistance film 13 is polluted by pollutants in the air, its sensing characteristics will change, resulting in failure. Therefore, it is not suitable to be placed outdoors to monitor natural condensation, and it is only suitable for monitoring whether condensation occurs in laboratories and

Method used

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  • Capacitance type moisture condensation sensor
  • Capacitance type moisture condensation sensor

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Embodiment Construction

[0023] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0024] image 3 A schematic structural diagram of a capacitive dew sensor provided in an embodiment of the present invention, Figure 4 for image 3 Schematic diagram of the structure of the B-B section in the middle, combined with image 3 and Figure 4 As shown, the capacitive dew sensor includes a substrate 21, and a capacitor grid 22 arranged on the substrate 21, the surface of the capacitor grid 22 is also provided with an insulating layer 23; the capacitor grid 22 includes two sets of comb-shaped capacitor plates, two sets of comb-shaped The capacitor plates are distributed across.

[0025] The highly reliable capacitive dew sensor provided in this embodiment has two sets of comb-shaped metal capacitance grids cross-distributed on the substrate. The capacitor grid is covered with an insulating layer, that is to say, the capacitor grid is sealed ins...

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Abstract

The invention relates to a capacitance type moisture condensation sensor which comprises a substrate and a capacitance gate arranged on the substrate. An insulation layer is further arranged on the surface of the capacitance gate, and the capacitance gate comprises two sets of comb type capacitance plates which are distributed in a crossed mode. By means of the capacitance type moisture condensation sensor, and through monitoring of capacitance changes of the capacitance type moisture condensation sensor, automatic monitoring of moisture condensation in meteorological observation can be achieved, corrosion resistance is strong, maintenance is not needed, and manufacturing cost is low.

Description

technical field [0001] The invention belongs to the field of sensors, in particular to a capacitive dew sensor. Background technique [0002] The existing dew sensor in the prior art, figure 1 is a schematic structural diagram of a resistive dew sensor in the prior art, figure 2 for figure 1 Schematic diagram of the structure of the A-A section in the middle, combined with figure 1 and figure 2 As shown, the resistive dew sensor includes a comb-shaped electrode 12 printed on a ceramic insulating substrate 11, and the comb-shaped electrode 12 is covered with a moisture-sensing resistance film 13 formed by resin and conductive particles. Specifically, the humidity-sensing resistance film 13 is formed by sintering hydrophilic acrylic resin and carbon powder. The principle is that when moisture is absorbed on the surface of the dew sensor, the distance between the conductive particles expands and the resistance rises rapidly, and the change of the humidity can be known th...

Claims

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Application Information

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IPC IPC(8): G01N27/22G01W1/11
Inventor 马舒庆蒲晓虎
Owner CMA METEOROLOGICAL OBSERVATION CENT
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