Water vapor interference resistant sensor air chamber and dynamic dehumidification method thereof

By employing flexible heating technology and dynamic temperature control methods, the problem of moisture interference in humid environments was solved, achieving high-precision and stable gas detection.

CN121453897APending Publication Date: 2026-02-03HENAN HANWEI ELECTRONICS
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Patent Information

Application Number
CN202511711309.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-11-20
Publication Date
2026-02-03

AI Technical Summary

Technical Problem

Existing photoionization and infrared sensors are susceptible to moisture interference in humid environments, leading to signal drift, decreased sensitivity, and false alarms. Existing moisture-proof methods are costly, have short lifespans, or affect device stability.

Method used

Utilizing flexible heating and dynamic temperature control technologies, the air chamber temperature is monitored in real time through a flexible heater and temperature acquisition components. Dynamic dehumidification control is achieved using an MCU control unit to maintain the air chamber temperature above the dew point temperature and prevent water vapor condensation.

Benefits of technology

It effectively avoids moisture interference, improves the detection accuracy and stability of the sensor in humid environments, reduces hardware costs and power consumption, and has strong adaptability.

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Abstract

The invention provides a water vapor interference resistant sensor air chamber and a dynamic dehumidification method thereof.The sensor air chamber is characterized in that an acquisition control module, a temperature acquisition assembly and a heating and heat preservation assembly are arranged in an air chamber structure assembly, and the acquisition control module is connected with the temperature acquisition assembly and the heating and heat preservation assembly; the heating and heat preservation assembly is arranged on the outer side of the sensor, the collection control module carries out data processing and regulation and control parameter calculation, and precise moisture-proof control is achieved. Meanwhile, the invention discloses a dynamic dehumidification method. In combination with the change of sensor signals and the moisture condensation temperature under different temperature conditions, the heating and heat preservation assembly is started to heat the air chamber, so that the temperature of the air chamber is always higher than the dew point temperature and is fixed as the temperature difference value of the air chamber temperature and the environment temperature, and the moisture is effectively prevented from condensing in the air chamber or interfering a detection signal; the problem that the sensor is prone to false alarm in the humid environment is solved, data are stable and reliable in the humid environment, and detection precision and stability are improved.
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