DEVICE FOR READING INFORMATION FROM WIRELESS SENSOR ON SURFACE ACOUSTIC WAVES Russian patent published in 2021 - IPC G01D5/12 H01L41/08 H01Q23/00 

FIELD: monitoring systems.

SUBSTANCE: invention is intended for use in systems for monitoring the state of objects in order to prevent unforeseen situations when monitoring rapidly changing physical quantities. The high-frequency harmonic oscillator 1 generates a sounding continuous radio signal of one frequency with constant amplitude to the transmitting and receiving antenna 7, directed to the transmitting and receiving antenna 8 of the receiving interdigital transducer 10 of the surface acoustic wave sensor 9. The low-frequency signal modulated in accordance with the change in the measured physical quantity at the output of the detector 3 is fed to the input of the ADC 4, which continuously digitizes the signals from the sensor 9, which is connected to the computer 5, which determines the measured physical quantity in real time, and from the output of the low-pass filter the time dependence of the measured physical quantity is removed.

EFFECT: invention allows monitoring the measured physical quantity continuously and recording all its changes over time, which eliminates the loss of information.

1 cl, 6 dwg