Patent ID: 8941371
Filing Date: 2015-01-27
Classification: G01N,G06K,H04Q

Abstract:
1. An RFID-based sensor, comprising: an RFID chip; an antenna electrically connected to the RFID chip; a sensing material electrically connected to the antenna; a first layer with the sensing material associated with the first layer; a second layer; a drive element, wherein the drive element is configured to move at least a portion of the first and/or second layers with respect to each other upon receiving a signal; and the second layer includes at least one aperture, and the at least a portion of the first and/or second layers is movable between a closed condition in which the aperture is substantially misaligned with the sensing material to prevent fluid communication between the sensing material and the outside environment and an open condition in which the aperture is substantially aligned with the sensing material to allow fluid communication between the sensing material and the outside environment.