SU1163334A1 - Device for calculating ratio of time intervals - Google Patents

Device for calculating ratio of time intervals Download PDF

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Publication number
SU1163334A1
SU1163334A1 SU833639671A SU3639671A SU1163334A1 SU 1163334 A1 SU1163334 A1 SU 1163334A1 SU 833639671 A SU833639671 A SU 833639671A SU 3639671 A SU3639671 A SU 3639671A SU 1163334 A1 SU1163334 A1 SU 1163334A1
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SU
USSR - Soviet Union
Prior art keywords
input
counter
output
inputs
counting
Prior art date
Application number
SU833639671A
Other languages
Russian (ru)
Inventor
Вагиф Багирович Ибрагимов
Рафаил Абрамович Топельберг
Original Assignee
Специальное Конструкторское Бюро Геофизического Приборостроения Института Геологии Ан Азсср
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by Специальное Конструкторское Бюро Геофизического Приборостроения Института Геологии Ан Азсср filed Critical Специальное Конструкторское Бюро Геофизического Приборостроения Института Геологии Ан Азсср
Priority to SU833639671A priority Critical patent/SU1163334A1/en
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Publication of SU1163334A1 publication Critical patent/SU1163334A1/en

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Abstract

A DEVICE FOR CALCULATING THE RELATION OF TIME INTERVALS, containing a pulse generator, the first and second counters, the OR element, the one-shot, the result counter, the first and second And elements, the first inputs of which are connected to the output of the pulse generator, the second inputs of the And elements are connected respectively to the first and second information inputs of the device, and outputs with counting inputs of the first and second counters, respectively, differing in that, in order to simplify the device, there are outputs of bits of the first counter filled with the subtractors are connected to the inputs of the corresponding bits of the second counter, the output of overflows of which is connected to the first input of the OR element, the second input of which is connected to the first information input of the device and the installation input of the second counter, (L the output of the OR element is connected to the inlet of the single vibrator, the output of which is connected to the control input of the second counter and the counting input of the result counter. 00 from 00 4

Description

1 The invention relates to automation and computer technology and can be used in information-measuring systems for building specialized computing devices with a time pulse form of information representation. A device for calculating time intervals, comprising a pulse generator, the first and second elements, And, the first and the second counters, the delay line, the code comparison element and the result counter, the counting input of which is connected to the counter installation input and to the output of the comparison element to odes, the inputs of which are connected to the information outputs of the first and second counters, the counting inputs of which are connected respectively to the outputs of the primary and second elements And, the first inputs of which are connected to the output of the pulse generator, the second input of the first element And connected to the first information input of the device, the second input of the second element I is connected via a delay line to the second information input of the device .ij. A disadvantage of this device is the need for a time shift of the pulse with a duration equal to the longest interval, which increases the computation time of the ratio of time intervals. The closest in technical essence to the invention is a device for calculating the ratio of time intervals, comprising a pulse generator, a result counter, a one-shot, a code comparison element, a NOT element, an OR element, first and second pulse counters, first and second AND elements, the first inputs of which connected to the output of the pulse generator, the second input of the second element And is connected to the second information input of the device, the second input of the first element And is connected to the first information input of the device, input The one-vibrator and the input of the second element are And, the output of which is connected to the counting input of the second counter, the output of the first element And is connected to the counting input of the first counter, the inputs of the comparison code element are connected with the output of the bits of the first and second counters, the output of the 342 circuit code comparison is connected to the installation input of the second counter and to the first input of the OR element, the second input of which is connected to the one-shot output, and the output of the OR element is connected to the counting input of the C2 result counter. A disadvantage of the known device is the complexity of the circuit, due to the need to use the element of comparison of codes and element NOT. The purpose of the invention is to simplify the device. . The goal is achieved by the fact that in the device for calculating the ratio of time intervals, containing the pulse generator, the first and second counters, the OR element, the one-shot, the result counter, the first and second AND elements, the first inputs of which are connected to the output of the pulse generator, the second inputs are countable. The inputs of the first and second counters correspond to the outputs of the bits of the first counter, the wavelength of the subtractor, connected to the inputs of the corresponding bits of the second counter, the output of which is connected to the first at the input of the OR element, the second input of which is connected to the first information input of the device and the installation input of the second counter, the output of the OR element is connected to the input of the one-vibrator, the output of which is connected to the control input of the second counter and the counting input of the result counter. FIG. 1 shows a block diagram of the proposed device; in fig. 2 - time diagrams of his work. I The device contains a pulse generator 1, the output of which is connected to the first input of the first element 2, the second input of which is connected to the first information input of the device, and the output to the counting input of the first counter of 3 pulses performed subtractive, the second element 4 of which inputs are connected with the pulse code generator and the second information input of the device, and the output with the counting input of the second counter 5 pulses, the bit inputs of which are connected to the information outputs 3
the rows of the first counter, and the output of the overflows - with the first input of the element OR 6, the second input of which is connected to the first input bus of the device and the installation input (P J the second counter, and the output to the input of the one-vibrator 7, the output of which is connected to the control input the second counter and the counting input of the counter 8 result.
The device works in the following way.
The first and second information inputs of the device are supplied with time pulse signals having durations corresponding to time intervals T and Tj, the ratio of which is required to be calculated (Fig. 2a, b). Pulses of high (exemplary) frequency from the output of generator 1 pass through the first element I 2 to subtractive counter 3, which counts these pulses Sfig, 2c) during time T. At the time corresponding to the end of the specified interval, the code in counter 3 becomes equal to
NT, where NT. T, - fo,
n is the number of bits of counter 3; f (, is the frequency of the pulse generator 1,
Counter 5 during the time interval T is forcibly set to O (at input R) by the first time as a pulse signal, therefore it does not count generator 1 pulses, although they pass to its counting input through an opened AND 4,
At the moment of time corresponding to the end of the time interval X, the one-shot 7 on the falling edge of the first time of the pulse signal
3334Л
arriving at its input through the element OR 6, forms a short pulse (Fig 2d, which is fed to the control input of counter 5 and allows the transfer of the code N to the inputs of its bits from counter 3, is fed to the result counter 8 and counted by it. This means that in a longer time interval of 1
10 times one time interval T; At the same time, the installation in O of counter 5 is removed, and. it starts counting the pulses of the generator 1, starting with the entered
15 into its code N (FIG. 2d),
After the counter 5 counts the number of pulses equal to N, it overflows on the trailing edge of the signal from the output of its high bit,
20 associated with the one-shot through the element OR 6, the one-shot loudspeaker generates a short pulse (FIG. 2d), which allows (via the control input of counter 5) transfer to counter 5 of the N code from counter 3 and write to the result counter 8 (this means that in a larger time interval —T, laid down the second time interval T),
30 The following sequence of operations is similar to the above. The calculation process ends at the point in time corresponding to the end of T, while in the counter 8 of the result a code proportional to the integer part of the ratio of time intervals is fixed.
Thus, the proposed device provides specified accuracy and other metrological characteristics; it is simpler in design, which increases reliability, reduces cost, and consumes power.
a 5
Rm
Account starts with code
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Claims (1)

  1. DEVICE FOR CALCULATING THE RELATIONSHIP OF TIME INTERVALS, comprising a pulse generator, first and second counters, an OR element, a single vibrator, a result counter, first and second AND elements, the first inputs of which are connected to the output of the pulse generator, the second inputs of the AND elements are connected respectively to the first and second information the inputs of the device, and the outputs with the counting inputs of the first and second counters, respectively, characterized in that, in order to simplify the device, it contains the outputs of the bits of the first counter, which is subtracted are connected to the inputs of the corresponding bits of the second counter, the overflow output of which is connected to the first input of the OR element, the second input of which is connected to the first information input of the device and the installation input of the second counter, the output of the OR element is connected to the input of the single-vibrator, the output of which is connected to the recording control input the second counter and the counting input of the result counter.
    ss
    1 1163334
SU833639671A 1983-09-01 1983-09-01 Device for calculating ratio of time intervals SU1163334A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU833639671A SU1163334A1 (en) 1983-09-01 1983-09-01 Device for calculating ratio of time intervals

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU833639671A SU1163334A1 (en) 1983-09-01 1983-09-01 Device for calculating ratio of time intervals

Publications (1)

Publication Number Publication Date
SU1163334A1 true SU1163334A1 (en) 1985-06-23

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
SU833639671A SU1163334A1 (en) 1983-09-01 1983-09-01 Device for calculating ratio of time intervals

Country Status (1)

Country Link
SU (1) SU1163334A1 (en)

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
1. Авторское свидетельство СССР № 579628, кл. G 06 G 7/16, 1977. 2. Авторское свидетельство СССР и 698006, кл. G 06 G 7/16, 1979 (прототип). *

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