METHOD FOR DIAGNOSTICS USING STATIC LOW- FREQUENCY SIGNAL Russian patent published in 1999 - IPC

FIELD: measuring instruments, medical devices. SUBSTANCE: method involves converting signal by means of measuring sequence of its amplitude samples and time, setting tolerant values for alternations of time intervals and amplitude which correspond to normal condition, detection of moment of alternation of sign of first derivative of input signal, storing signal value in each moment of alternation of its first derivative, detection of converted values of time interval t₁ in moments of alternation of sign of du/dt_I+1, first derivative of signal with respect to previous moment of sign of du/dt₁ and time interval t_I+1 between equal moments of alternation of sign of du/dt₂ as well amplitude in digital representation, analysis of phase difference of signal in each moment of alternation of sign of first signal derivative using comparison of values of phase differences and amplitude with given norms and identification of deviations of current values from given norms using comparison results. EFFECT: possibility of diagnostics using results of analysis of signal parameters. 2 dwg