Seat belt reminder is a kind of membrane type contact sensor. The contacts of sensor evenly distribute on the stress-bearing surface of seat, will generate a trigger signal when the external force presses on the seat. It apply to the car seat occupant perception system, such as safety belt reminder , taxi automatic message accounting system, airbag’s sensor, condition that the driver leaves seat. For example, with this device, occupancy sensor can detect if anybody sits or not, and the airbag won’t open if nobody. It can also design the dimension of sensors and sensitivity of contacts as the shape and hardness of car seat.
The car seat pressure sensors usually contain four layers, up circuit layer, between adhesive layer, down circuit layer and back adhesive layer. Other accessories are wire cables and connectors.
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