pneumatic sensor

Abstract

The invention discloses a pneumatic sensor, which has an air inlet and an air outlet. The pneumatic sensor includes: a first friction component, a housing, a second friction component and a third friction component; wherein, the housing has a hollow hollow with a preset shape structure to form an airflow passage, and the airflow passage communicates with the air inlet and the air outlet, so that the airflow enters the airflow passage through the air inlet and flows out through the air outlet; the first friction part is arranged in the airflow passage, and the second and third friction parts Set at a position where it can be in contact with the first friction part; when the airflow enters the airflow channel through the air inlet, the first friction part will rub against the second and / or third friction part respectively due to the action of the airflow and generate electrical signals, the second and The third friction component includes an electrical signal output of the pneumatic sensor. The pneumatic sensor can simplify the manufacturing process of the existing pneumatic sensor, increase the driving force of the air flow on the first friction part in the pneumatic sensor, and further improve the working sensitivity and stability of the pneumatic sensor.

Description

technical field [0001] The invention relates to the technical field of sensors, in particular to a pneumatic sensor. Background technique [0002] With the continuous development of technology and people's living needs, people have developed sensors based on various working principles, such as pressure sensors, temperature sensors and pneumatic sensors, etc. These sensors have been applied to all aspects of life and scientific research. For example, pneumatic sensors are applied to electronic cigarettes. [0003] Pneumatic sensors use airflow to make the sensor generate electrical signals. In the prior art, the atomizer, pneumatic sensor and controller in the electronic cigarette are all set in the smoke channel, and the air flow in the smoke channel is driven by the user inhaling at the smoking end, so that the pneumatic sensor senses the airflow signal The trigger controller controls the battery assembly to supply power to the atomizer and atomizes the e-liquid into smok...

AI Technical Summary

Problems solved by technology

However, the existing pneumatic sensors have complex manufacturing processes, poor sensitivity and stability, and are prone to false triggering by external vibrations.

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