Seat sensor is a thin film contact sensor. 
The contact points of the sensor are evenly distributed on the surface of the seat. 
When the seat is subjected to external pressure, a trigger signal is generated. 
Used in car seat occupant perception system, such as seat belt alarm sensor, 
taxi automatic fare meter, etc. 
It can design the shape of the sensor and the sensitivity of the contact according to the shape of the car seat, hardness and tightness of the skin.