Abstract: A pneumatic sensor in an electronic cigarette, a device for processing airflow and an electronic cigarette are provided. The pneumatic sensor in the electronic cigarette includes a housing, defining a chamber and provided with a window at a top of the housing, an air inlet at a side wall of the housing, and at least one suction hole at a bottom of the housing, the window, the air inlet, and the suction hole all being communicated with the chamber; a vibrating film unit, disposed inside the housing and provided with a vibrating film capable of vibrating under airflow; and an electrode plate, acting as a signal outputting end of the pneumatic sensor in the electronic cigarette, and the vibrating film has a fixed end fixed to the vibrating film unit and a free end.

Abstract: The present invention discloses a pneumatic sensor, having an air intake and an air outlet. The pneumatic sensor includes a first triboelectric component, a shell, a second triboelectric component and a third triboelectric component, wherein the shell has a hollow structure in a preset shape to form an airflow channel, and the airflow channel is communicated with the air intake and the air outlet, thus allowing the airflow to enter the airflow channel from the air intake and flow out from the air outlet; the first triboelectric component is arranged in the airflow channel, and the second and the third triboelectric components are arranged at positions capable of contacting with the first triboelectric component; and the second and the third triboelectric components include electric signal output terminals of the pneumatic sensor.