SU563162A1 - Systole digital meter - Google Patents

Description

it is united with the generator and with the counting input of the inverse conversion counter, and its output with the counting input of the forward conversion counter, whose outputs are connected via a register, to the inverse inputs of the inverse conversion counter, where the output of the reverse conversion CI is connected to its control input and the diffraction input the indicator, the output of the I-teething device under “Duchenne to the reset input of the counter of direct conversion уп) {{) is available directly to the input of the register and its input is connected to the output of the selector / -a teeth.

The drawing shows a diagram of the proposed diffractive heart rate meter.

The digital heart rate meter consists of a selector /. - teeth of the electrocardiogram connected to the recalculation device 2 ./ - teeth, the output of which is connected to the reset input of the counter 5 direct conversion and the control input of the register 4. The outputs of the counter 3 are directly converted to the inputs of the register /; the outputs of which are connected to the well-known inputs of the inverse conversion counter 5, the output of which is connected to its own control input and output of the digital indicator 6. The clock generator 7 is connected to the input of the frequency divider 8 and the counting input of the counter 5 inverse conversion. The output of the frequency divider 8 is connected to the counting input of the counter 3 of the irreversible conversion.

Digital heart rate meter works as follows.

The impulses of the 7-teeth from the selector 1 arrive at the devices 2 of the recalculation of the--teeth. At the output of the device. Each imiuls appears through the time T (K-K -). - - 2 (Lth); where T (K-K) is the i-interval between i-1 and i R-teethK - the conversion factor of the device 2 conversion ./-teeth. During this time, the count-to-3 direct conversion is filled with the frequency of the direct gen. Where Fgen- is the pulse frequency of the clock generator 7; Q- Conversion factor of frequency divider 8; and calculates rp RPR- T (R-K). pulses, i.e., in the counter of the irreformation, during the time interval G (; d forms-

with binary code iropor.tsponalnom this interval.

The impulse from the recalculation device 2 of the i-zubdov, which arrives at the control input of register 4, rewrites into it the code from counter 3 of the direct conversion and resets this counter to zero. Then, a code proportional to the interval between the following teeth is started to dial into the 3 forward conversion counter. The counting input of the inverse conversion counter 5 receives pulses from the generator of 7 clock pulses, n at each moment of the overflow of the counter 5 of the inverse conversion of the emerging and output emulsion, it acts on its control input. In counter 5, the inverse of its inverse inputs of the trans; from register 4, the code is L ,,,. ,,,. - L ,,; ,,, where is the max, bone of the counter.

Thus, the counter 5 of the inverse transform calculates the impulses not from zero, but from “ode N ,,,„, Nп-р to / У, „„,., And the conversion factor of this counter is equal to

JV - f / V N - N

m ks-max-pr pr

Consequently, the frequency of the pulses in the output of the counter 5 is inverse

F ,.

(four)

obrN

prSubstituted in (4) expressions (1), (2) and (3), we obtain

40 sludge and gg and with the introduction of a new variable P -77 setting E T,) cp. where G () is the interval between two V-teeth, averaged over K periods, equation (5) takes the form: Robr- - PF (Ks) p, T () p i.e. the frequency of the trace of N-muls at the output of the counter 5 inverse transform proportional to the frequency of the succession of the teeth, averaged over the / C intervals. This frequency enters the digital indicator 6 and rolls up