RU1835254C - Pulsotachometer - Google Patents

Abstract

Usage: the invention relates to medical equipment. Essence: a heart rate monitor contains a pulse sensor 1, counting triggers 2, 3, generators 4, 5 pulses, logic elements 6-9 AND, logic elements 10-14 AND-NOT, logic element 15 AND-OR, counters 16-19 pulses ,, controlled frequency dividers 20-23, single vibrators 24-26, comparison circuits 27, 28, register 29, digital indicator 30, toggle switch unit 31, loudspeaker 32. The purpose of the invention is sound control of the average heart rate. 1 pf, 1 ill.

Description

The invention relates to medicine and can be used in heart control devices, for example, in the process of sports training.

The aim of the invention is to increase the usability of the heart rate monitor by making it possible to control the average heart rate not only in digital form, but also without distracting the attention of the controller to the digital display.

In the proposed device, as in the prototype device, a digital indication of the average heart rate is carried out, averaged over a given number of heartbeats and updated with each heartbeat, and the entered features are used to deliver sound signals whose frequency exactly matches the measurement frequency heart rate, and tonality is proportional to the measured average frequency

heart rate. If the measured average heart rate goes beyond the upper or lower limits set by the corresponding sets of the toggle switch block, the intermittent signal is continuous, corresponding to the tone.

Thus, the observation of the measured pulse, in particular the control of its exceeding the specified upper or lower limits, does not require constant attention of the controller to the digital display, which increases the usability of the proposed device compared to the prototype device, i.e. determines the advantage of the proposed technical solution in comparison with the latter.

The foregoing confirms the materiality of the difference of the proposed technical solution.

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The drawing shows a functional diagram of the device.

The device comprises a pulse sensor 1, counting triggers 2 and 3, pulse generators 4 and 5, logic elements 6–9 AND, AND – NOT 10–14 and AND – OR, counters 16–19 pulses, controlled frequency dividers 20–23, single vibrators 24-26, comparison circuits 27 and 28, register 29, digital display 30, toggle switch unit 31 and loudspeaker 32.

The device operates as follows. way.

Before the start of the measurement, the signal applied to the initial installation bus (CI) triggers 2, 3, counters 16-19, frequency dividers 20-23, single vibrators 24-26 and register 29 are brought to the zero state. The arrival of the first pulse pulse from the sensor 1 through the And 6 element to the counting input of the trigger 2 transfers the last to the single state, after which the pulses of the generator 4 through the And-NOT 10 element arrive at the counting input of the counter 16 until the arrival of the second pulse pulse trigger 2 will not return to the zero state. As a result, on the counter 16, a binary code of the instantaneous period of the measured pulse will be received.

During the action of each pulse pulse, while the trigger 2 is in the zero state, the pulses of the generator 5 through the AND-NOT 12 element are fed to the counting input of the frequency divider 20 and from the output of the latter to the counting input of the counter 17 until the output of the transfer this counter does not receive a signal that will start the single-shot 24 and the pulse from the inverted output of the single-shot 24, passing through the elements N-H E and I 6 set the counters 16 and 17 and the frequency divider 20 to zero, and trigger 2 to unit, thereby ending the passage the pulses of the generator 5 through the AND-NOT element 12. Note that since the binary code of the instant pulse period from the output of the counter 16 is supplied to the control inputs of the frequency divider 20, the size of the pulse train at the output of the AND-NOT 12 element is inversely proportional to the pulse period, those. proportional to the instantaneous heart rate. This burst of pulses goes to the counting input of the frequency divider 21, the division coefficient of which is set by the set of toggle switch block 31, and from the output of the frequency divider 21 to the input of the direct counting of the counter 19 and through the And 8 element to the counting input of the counter 18, i.e. the binary code of the instantaneous pulse rate is entered into these counters, more precisely, this code is added to the contents of these counters obtained in the previous pulse period. At the end of this burst of pulses from the output of the AND-NOT 12 element, the pulse from the direct output of the single vibrator 24 allows the contents of the counter 18 to be transferred to register 29, and the pulse from the inverse output of this single vibrator triggers a single vibrator 25, the pulse from the inverse output of which passed through the AND element -HE 14 resets counter 18 and frequency dividers 21 and 22 to the zero state, and going through the AND 7 element sets trigger 3 to the ON state, thereby allowing the pulses of the generator 5 to pass through the AND-NOT 13 element to the inputs of the reverse

5 counts of the counter 19 and the counting frequency divider 22, the division coefficient of which is set by the set of the toggle switch unit 31, and from the output of the frequency divider 22 pulses are transmitted through the And 8 element to the counting input

0 of counter 18. After the contents of counter 19 are written off to zero, a signal appears on its loan output, which through element And 7 enters the counting input of trigger 3, returning the latter to zero

5 state that stops the passage of pulses through the element AND-NOT 13. In this case, the counter 18 will be a binary code whose value is proportional to the value of the code written off from the counter 19, and in the last

0 the contents of register 29 are overwritten by signals from the output of AND element 9,

So, by the arrival of the next pulse pulse, the device appears in a state similar to its state after

5 of the end of the first pulse pulse, with the only difference being that counter 18 shows a value proportional to the previous contents of counter 19, and in the last, the previous contents of counter 18, i.e. as in the prototype device 3, the counters 18 and 19 together with the frequency dividers 21 and 22 and the register 29 form a digital low-pass filter of the first order, which, as you know, is an average value detector. As in the prototype (3), this average value is recorded in the counter 19 and visualized by a digital indicator 30 connected to it.

0 The signal from the output of the And 9 element simultaneously with the rewriting of the binary code of the average pulse value from register 29 to the counter 19 produces the start / stop of the single vibrator 26, the pulse from the output of which is modulated by the frequency from the output of the frequency divider 23 passed through the AND-OR 15 element to the loudspeaker input 32 causes a beep. Since the dividing factor of the frequency divider 23 is determined by the Binary code of the measured average heart rate,

available at the outputs of the counter 19, the tonality of this sound signal is set by this measured average heart rate, and the frequency of the sound signals is exactly the same as the measured heart rate.

If the binary code of the average heart rate at the output of the counter 19 exceeds the upper limit or does not reach the lower limit, which are set by the set of toggle switch unit 31, then the output will have a larger comparison circuit 27 or a smaller comparison circuit 28, which will also be modulated by the output frequency the frequency divider 23 and passing through the AND-OR element 15 to the input of the loudspeaker 32 will cause a continuous sound signal corresponding to the tone, lasting until the measured average heart rate falls into limits given.

Thus, in addition to the digital indication of the measured average heart rate, which also occurs in the prototype device (3), the proposed technical solution allows the device for measuring the average heart rate to emit sound signals, due to which the controller can monitor the pulse without distracting attention from other processes, moreover, the proposed device particularly distinguishes cases when the measured pulse rate goes beyond predetermined limits.

The foregoing confirms the increased usability of the heart rate monitor and, therefore, the achievement of the object of the invention.

Claims (1)

SUMMARY OF THE INVENTION A heart rate monitor comprising a heart rate sensor, first and second counting triggers, pulse generators and single vibrators, first, second, third and fourth logic elements AND and pulse counters, the first to fifth logical elements AND NOT, the first, second and third control frequency dividers, a register, a digital indicator and a toggle switch block, the pulse sensor output being connected to the first input of the first AND element, the output of which is connected to the counting input of the first trigger, and the outputs of the first counter are connected to the control inputs of the first frequency divider, the outputs of the third counter - a digital indicator, the forward and inverted, yield of the first trigger - the first inputs of first and second AND-NO elements, respectively, second inputs of which are connected respectively to the outputs of the first and the second pulse generators, and the outputs are with the counting inputs of the first counter and the first and second frequency divider, the third input of the second AND-NOT element is with the output of the 5 pulse sensor, the output of the first frequency divider is connected to the counting input of the fourth counter, the transfer output of which is connected to the start input of the first single-vibrator, the direct output of which is connected to the register sync input, and the inverse output - with the start input of the second one-shot, the second input of the first AND element and the first input of the third AND element, the output of which is single with reset inputs 5 of the first and fourth counters and the first frequency divider, the inverse output of the second one-shot is connected to the first input of the second element And, the second input of which is connected to the output of the loan of the third counter, and the output to the counting input of the second trigger, the direct output of which is connected to the first input of the fourth element AND: NEG whose second input is connected to the output of the second pulse generator, and output5 is connected to the counting input of the third frequency divider and the countdown input of the third counter, the information inputs of which are connected to Exit register input direct account - with a first input of the third AND ele0 ment and the output of the second frequency divider, a write control input - with the output of the fourth AND gate, the first and second inputs of which are connected with a straight first and second inverted output 5 triggers controlling the inputs of the second and third frequency dividers are connected to the outputs of the toggle switch block, and their reset inputs are connected to the reset input of the second counter and the output of the fifth AND-NOT element, the first input of which is connected to the inverse output of the second one-shot, and the second input - with the second the input of the third element AND NOT, the bus on the initial installation of the device and the inputs resetting the first and second triggers and one5 vibrators, the third counter and register, the information inputs of which are connected to the outputs of the second counter, the second input of the third element And is connected to the output of the third frequency divider, and its output 0 - to the counting input of the second counter, characterized in that, for the purpose of sound monitoring the average heart rate, a fourth controlled frequency divider, an AND-OR logic element, a third 5 one-selector, the first and second comparison circuits and a loudspeaker, the inputs of which are connected to the output of the AND-OR element, the first inputs of the first, second and third groups And which are connected to the output of the fourth frequency divider, and their second inputs are connected respectively to the outputs: direct of the third single vibrator, More than the first and Less than the second comparison circuits, the first inputs of which are connected to the outputs of the toggle switch block, and their second inputs - with the outputs of the third counter and the control inputs of the fourth frequency divider, the counting input of which is Inonii with the output of the second pulse generator and a reset input - with the bus device and the initial setup reset input of the third monostable trigger input coupled to an output of the fourth AND gate and the third inputs of the second and third groups of AND-OR