IMPULSE SUPERBROADBAND SENSOR OF REMOTE BREATH AND HEARTBEAT MONITORING Russian patent published in 2010 - IPC A61B5/08 A61B5/205 G01S13/00 

FIELD: medicine.

SUBSTANCE: invention refers to medical diagnostic instruments for examination of physiological functions of living organisms, particularly to radiolocation superbroadband tools of breath and heartbeat parametre diagnostics for patients. Sensor includes transceiver antenna connected to adjustable antenna switch; UHF signal generation section containing UHF signal generator, high frequency filter and buffer amplifier connected in series; adjustable electronic key of probing and reference signal generation; probing signal sector containing high frequency filter and power amplifier connected in series, with amplifier output connected to antenna switch input and high frequency filter input connected to first output of electronic key; reflected signal receiver containing low-noise amplifier, co-phased and quadrature channels, each channel including mixer, low frequency filter, low frequency amplifier, low frequency security filter and analog-to-digital converter connected in series. Input of low noise amplifier is connected to antenna switch output, while amplifier output is connected to mixers' outputs. Reference signal sector includes high frequency filter, power amplifier and phase-shifting circuit connected in series, with the circuit output connected to second input of quadrature channel mixer in receiver. Power amplifier output is also connected to second input of co-phased channel mixer in receiver, and high frequency filter input is connected to second output of electronic key. Data display unit and processing unit connected in series are connected to outputs of analog-to-digital converters. Control and timing unit input is connected to second output of processing unit and to UHF signal generator input, while second output of control and timing unit is connected to control input of electronic key and third output is connected to control input of antenna switch.

EFFECT: enhanced phase sensitivity of diagnostics, eliminated blind spots within the whole work distance, increased reproduction precision of motion function and object parametres due to consideration of signal reflected from immobile objects.

6 cl, 25 dwg