Patent ID: 9116034
Filing Date: 2015-08-25
Classification: G01D,G01H,G01L,G01N,G06K

Abstract:
1. A wireless measurement device comprising: a surface acoustic wave (SAW)-based micro sensor converting a wirelessly received pulse signal into an SAW and generating a plurality of pulse signals by reflecting the SAW, and wirelessly transmitting the plurality of pulse signals to measure a variance of an environmental element; and a reader generating and wirelessly transmitting a pulse signal to the SAW-based micro sensor to measure variances in environmental elements, whenever an interval between the plurality of pulse signals received by reflecting the transmitted pulse signal by the SAW-based micro sensor corresponds to a determined interval between pulse signals of an environmental element, wherein the reader measures a variance in the environmental element by counting times of pulse signals generated and wirelessly transmitted to the SAW-based micro sensor for a certain amount of time.