March 25, 2016

RFID Tire Patch

Fits right in a football or tire. Measure pressure with your smartphone with no battery required!

Whenever I get a flat during a bike ride, I have to use a CO2 inflator or a hand pump with no pressure gauge to inflate the tire. I’m always left wondering if there’s enough pressure or if it’s still leaking. It can be hard to tell by touch or sight. This low cost RFID pressure tag is intended to be sealed internal to the tire’s tube to easily measure the pressure. Best of all, it’s readable with an NFC-enabled smartphone, which I always take with me on rides.

Tire pressure: The patch fits right onto your tire tube and senses pressure through a small hole in the tube.

This prototype patch is entirely flexible and conforms to the inner surface of the tire
The flexible patch is approximately 30 mm in diameter

Specifications:

  • Pressure range: 0-40 psi (low pressure model), 0-435 psi (high pressure model)
  • Pressure resolution: 0.01 psi
  • Read range with smartphone: 1 inch
  • Run time: Forever (no batteries)