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.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Filing Date
- 2026-05-14
- Publication Date
- 2026-07-17
AI Technical Summary
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.
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.
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.
Smart Images

Figure CN122409045A_ABST