SU1326240A1 - Pulse rate meter - Google Patents

Abstract

The pulse frequency meter contains a pulse sensor 1, a counter 6, a register 7, a generator of 3 clock pulses, a counter 8, an indicator 12. To increase accuracy and reduce the measurement time during pacing, a divider 4 frequencies are entered into it, a shaper 5 of the reference time, a counter 10 and a decoder 11. The meter can be used when checking and adjusting cardiac pacemakers and finding an extrasystole. 1 il. with ND 05 to 4

Description

The invention relates to medical technology, namely, diagnostic and cardiology devices, and can be used in testing the operation and calibration of pacemakers.

The purpose of the invention is new accuracy and reduced measurement time for cardio ulcer AI.

The drawing shows a structural diagram of the meter.

The pulse frequency meter contains a pulse sensor 1, a pulse shaper 2, a clock pulse generator 3, a frequency divider 4, a reference time shaper 5, first counter 6, register 7, second counter 8, comparison unit 9, third counter 0, money converter i; and indicator 12.

The device works as follows.

Short recording resolution pulses, the nonetheless fronted of which coincides with the front pulse edge from the pulse sensor I, allow the information to be written to the register 7, go to its second REMOTE, and are also fed to the input of the imager 2 pulses, () pulses short They have jyjibe-zero settings, the leading edge of which coincides with the falling edge of the pulses of the write release. The pulses of the pool installation ensure the resetting of the following blocks by their third inputs: the first counter 6, the 4-frequency divider. (|) 0 |) worldviewer 5 of the reference time and the third from the yutchik 0. In addition, the impulse-C) 1 zero settings are also served on the second 3xo;: i b.yuk 9 s) avneni, as a result of Mei o from its At the input, the BTopoii input of the second counter 8 is set, resetting it to its initial state. The generator of 3 clock pulses generates T1 1 direct.) 1e pulses, for example, with a frequency of 10 MHz, which are fed to the input; 1 body - -1 frequency. The frequency of the generator 3 clock pulses provides the necessary accuracy of registration, some pulses. (., the output of the 4 frequency frequency pulses with a frequency of, for example, I kHz are fed to the first input of the first counter 6, filled it after 1H), as its second input, |; cools the zero setting pulse. Signal; In the form of a binary code from the output of the nerve counter G), the first inputs of register 7 are produced. In 1, the signal i occurs; vi.two dv-opnogo code only in those Bpe: V, eiiH. when, and na the second input of the register 7 pos: the imau falls. gs resolution recording pachina with vvod o pulse zero. The signal recorded in register 7 in the form of the DOPCNGS1 code arrives at the first time inputs of the circuit c;) а1 ne1i-1. With Bbixc. oscillator 3 clock ir.ipulses rectangular HMnyjHiCL.i h1H) goy, apr1-: measures. 10 MHz are supplied to the first BXCXI of the second counter 8,

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fill it in after the second input of the zero set-up pulse arrives. The repetition frequency of rectangular pulses filling the second counter 8 is 10,000 times higher than the repetition frequency of the rectangular pulses filling the first counter 6. The capacity of the first counter 6 is equal to the capacity of the second counter 8, for example 14 bits. From the output of the second counter 8, signals in the form of a binary code are fed to the third inputs of the comparison circuit 9. When information coincides in the form of a binary code signal arriving at the first and third inputs of comparison unit 9, a reset signal is generated at its output, which sets the second counter 8 to the initial state, after which the cycle of the second counter 8 is repeated. In addition, the signal from the output of the comparator unit 9 is supplied to the third input of the third counter 10.

The period of following pulses generated at the output of comparator unit 9, for example, is 10,000 times less than the period of the pulse following.

From the output of the 4 frequency divider, a signal with a frequency of, for example, 1 kHz is fed to the input of the imaging unit 5 of the reference time, the output of which produces a strobe pulse with a duration of, for example, 60 ms, starting from the rear frm of the NMMP. This pulse is applied to the first input of the third counter 10. With a simultaneous impact on the third counter I) of both the strobe pulse from the output of the imaging unit 5 of the reference time at the first input of the third counter 10 and the reset pulses coming from the output of the comparison circuit 9 to the third input the third counter 10, the signal from the output of the latter is fed to the input of the decoder 11, in which the conversion of the binary code to the decimal occurs. After that, the signal is fed to the indicator 12, which indicates the frequency of the pulley from one strike to another in the form of a decimal number that displays the pulse in the form of counts of beats per minute.

Thus, a pulse frequency meter, sa, provides a reduction in the measurement time to 0, s and a higher accuracy in measuring the pulse rate, for example, with an accuracy of 0.1 punch / min. The meter can have any predetermined accuracy of zero frequency measurement and measurement time, which are determined by the choice of the frequency of the clock generator, the capacity of the counters 6, 8 and 10, the choice of the elemental base with the required speed. The pulse frequency meter provides the registration of the measurement of the pulse from the stroke to the stroke, which is important when checking and calibrating the pacemaker and finding an extrasystole.

Claims (1)

Invention Formula A pulse frequency meter, comprising a pulse sensor, the first counter and a register connected in series, a clock pulse generator, the output of which is connected to the first input of the second counter, and an indicator, characterized in that, in order to improve the accuracy and shorten the measurement time during cardiac stimulation, it additionally contains a series-connected frequency divider, a reference time driver, a third counter and a decoder, the output of which is connected to the indicator, a comparison unit, the first input of which is connected to you Odom register. and the output - with the second input of the second counter and the third outcome of the third counter. pulse generator, the output of which is connected to the second inputs of the first n of the third counter, comparison unit of the reference time generator and frequency divider, the output of which is connected to the first input of the first counter, while the output of the pulse sensor is connected to the input of the pulse shaper and the second input of the register, which output is connected with the first input of the comparison unit, and the output of the clock generator is connected to the first inputs of the frequency divider and the second counter, the output of which is connected to the third input of the comparison unit.