METHOD OF AGRICULTURAL PRODUCTS AUTHENTICITY AND MOVEMENT VERIFICATION AND SYSTEM FOR IMPLEMENTATION THEREOF Russian patent published in 2020 - IPC G06K5/00 

FIELD: information technology.

SUBSTANCE: disclosed method and system relate to means of information provision in remote access networks, aimed at identification of agricultural products coming for sale. System implementing the disclosed method comprises a reader, a radio-frequency mark and receiving equipment of the manufacturer. Reader comprises master oscillator 1, duplexer 2, transceiving antenna 3, high frequency amplifier 4, phase detector 5, identification codes database 6, codes comparison unit 7, switch 8, delay line 9, pseudorandom sequence generator 10, adder 11, multiplier 12, narrow-band filter 13, phase manipulator 14 and power amplifier 15. Radio-frequency mark comprises piezocrystal 16, microstrip antenna 17, electrodes 18, buses 19 and 20, set 21 of reflectors. Receiving equipment of the manufacturer comprises receiving antenna 22, a high frequency amplifier 23, heterodynes 30 and 31, mixers 32 and 33, intermediate frequency amplifiers 34, 35 and 47, correlator 36, threshold unit 37, switches 38, 51, 52 and 53, amplifiers 48 and 49 of trebled intermediate frequency, amplitude detectors 50, 52 and 53, units 56, 57 and 58 of universal demodulators of complex PCN signals, each of which contains multiplier 25, 26, 40 and 41, narrow-band filters 27 and 43, low-pass filters 28 and 42, producer server data base 29, phaseinventors 44 and 45, subtraction unit 46.

EFFECT: technical result is wider range of operating frequencies without wider range of heterodyne frequency tuning by using mirror receiving channels.

2 cl, 5 dwg