I need to measure vibration using RFID, or some other technology. (Feel free to say if there is a better choice that RFID passive)
I need very low cost per chip and very low profile, hence RFID passive. Also, I can not justify the difficulty of batteries needed to be replaced.
Given that the "energy" comes from the message received, how often can a passive RFID be polled? I expect these vibrations to be short lived, and therefore, easily missed.
Is it crazy to poll the chip every second? Or every half second?
It sounds crazy to me, but this may be the only way I can create a solution cheap enough and useful.