Pressure Sensor - Nylon Spring Fabric
What does the sensor do?
It can be used as a pressure sensor that only senses high pressures. This is because high pressure is needed to compress the non-conductive nylon spring, after which the conductive top and bottom surfaces will contact and start to sense pressure.
How it works?
After the high pressure brings top and bottom surfaces together, further pressure will cause deformation in the thickness direction. As a result, the spacing of conductive carbon particles on the fabric will be reduced, and the resistance of the fabric will decrease.
You will need:
- carbon black ink and polyurethane
- nylon spring fabric
- conductive silver fabric
Sensor structure & Fabrication steps
- Laser cut nylon spring fabrics.
- Partially-dip-coat top and bottom surfaces of fabrics with carbon black ink and then polyurethane.
- Connect with silver fabric.
Application scenarios
It can be useful when high pressure sensing is what you need and you want to physically filter low pressure readings.