A pressure sensor

By using an elastic air bladder instead of a foam tube in the pressure sensor, the problem of sensor damage caused by freezing or pressure shock is solved, achieving more reliable buffer protection and cleaning of the waterproof and breathable structure, ensuring the normal operation of the sensor.

CN122409045APending Publication Date: 2026-07-17

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Filing Date
2026-05-14
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

When faced with freezing or pressure shocks, existing pressure sensors suffer from small deformation of traditional foam tubes and their waterproof and breathable structure is prone to clogging, affecting measurement results.

Method used

Elastic airbags are used instead of foam tubes. The volume expansion during freezing is absorbed by the change in the volume of the cavity inside the elastic airbags, and the waterproof and breathable structure is connected to the environment to clean and unclog the waterproof and breathable membrane.

Benefits of technology

It effectively buffers the destructive pressure caused by freezing, ensuring the reliability and measurement function of the sensor, preventing the waterproof and breathable structure from clogging, and improving the sensor's protection and recovery capabilities.

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Abstract

一种压力传感器,包括:外壳,其上设置有介质通道,所述介质通道连通至所述外壳内部形成的一安装腔;压力测量组件,其封堵于所述介质通道的一端;防水透气结构,所述安装腔经由所述防水透气结构连通至环境;及固定于所述介质通道内的弹性气囊,所述弹性气囊的侧壁独自地形成或与所述介质通道的内壁之间共同围成允许压力介质纵向通过的通道,所述弹性气囊的内部连通至所述安装腔;本发明通过将弹性气囊与安装腔连通,当弹性气囊被压缩时,其内部的气体会被挤压至安装腔,从而起到对防水透气结构中防水透气膜的吹扫作用,达到一定的清理疏通防水透气结构的效果。
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