IMPULSE SUPERWIDE-BAND SENSOR Russian patent published in 2009 - IPC A61B5/08 G01S13/00 

FIELD: medicine.

SUBSTANCE: impulse superwide-band sensor is intended for measuring breath and heart contraction frequency and can be applied as supersensitive means of cardio-vascular system and breathing organs diagnostics in stationary and field conditions. Sensor contains control unit made with possibility to form temporary delay of synchronisation impulse, chain of probing signal formation, transmitting and receiving antenna, chain of probing signal transmitter, whose outlet is connected with transmitting antenna, chain of reflected signal receiver, whose inlet is connected with receiving antenna, and first electronic switch. Inlet of first electronic switch is connected with outlet of probing signal formation chain, and its outlets are connected with inlet of probing signal transmitter chain and with reflected signal receiver chain. Outlets of channels of reflected signal processing, which are part of chain of reflected signal receiver, are connected to chain of calculation of breath and heart contraction frequencies. Into chain of frequency calculation included are: two frequency filters, two adders, two units of signal amplitude computation, two units of signal energy computation, two integrators, two comparator units, two units of signal multiplication, two units of reference signal, second and third electronic switches. In process of measurement frequency selection of reflected signal in two processing channels and further separation of individual signals characterising breath frequency and heart contraction frequency are carried out. Isolated signals are subjected to separate correlation processing in chain of computation of breath and heart contraction frequency. After that selection of the most informative signal for each controlled physiological parametre and frequency computation are carried out.

EFFECT: invention ensures increase of sensor phase sensitivity and accuracy of measurement of controlled physiological parametres, as well as possibility to measure controlled parametres in case of patient's movement.

9 cl, 24 dwg