SU752792A1

SU752792A1 - Analog to code converter

Info

Publication number: SU752792A1
Application number: SU731953681A
Authority: SU
Inventors: Виктор Иванович Редченко; Леопольд Александрович Сулима; Валерий Григорьевич Палем; Вадим Михайлович Миролюбский
Original assignee: Предприятие П/Я А-7160 Ордена Трудового Красного Знамени
Priority date: 1973-08-10
Filing date: 1973-08-10
Publication date: 1980-07-30

Description

Изобретение относится к электро·^ технике и может найти применение, в основном, в системах и приборах вычислительной техники, автоматического контроля и регулирования для преобразования аналоговых электрических сигналов в код, а также для согласования различного типа аналоговых устройств с цифровыми.The invention relates to electrical engineering, and can be used mainly in systems and devices of computer technology, automatic control and regulation for converting analog electrical signals to code, as well as for matching various types of analog devices with digital ones.

Известен преобразователь напряжения во время, содержащий интегратор, ключи, подключенные к источникам эталонного и преобразуемого нап- 15 ряжений, а также многопороговый детектор, определяющий полярности и величину напряжений [1] .A known voltage converter at time, containing an integrator, switches connected to the sources of the reference and converted voltages, as well as a multi-threshold detector that determines the polarity and magnitude of the voltages [1].

Недостатком этого преобразователя является снижение точности и помехозащищенности преобразования за счет дрейфа напряжения на выходе интегратора.The disadvantage of this converter is a decrease in the accuracy and noise immunity of the conversion due to voltage drift at the output of the integrator.

Известен также преобразователь напряжения в код, содержащий генера- 25 тор импульсов, нуль-орган, генератор пилообразного напряжения и счетное устройство [2].A voltage-to-code converter is also known, which contains a pulse generator 25, a zero-organ, a sawtooth voltage generator and a counting device [2].

Недостатком этого преобразователя является то, что достижимая точ- . 3Q ность кодирования определяется точностью эталона.The disadvantage of this converter is that it is achievable. 3Q coding is determined by the accuracy of the standard.

Цель изобретения - повышение точ5 ности и расширение функциональных возможностей преобразования аналогкод.The purpose of the invention is improving accuracy and expanding the functionality of converting analog codes.

Поставленная цель достигается тем, что в преобразователь аналог10 код, содержащий первый нуль-орган, выход которого соединен с первым входом счетного устройства, генератор импульсов, введены второй и третий нуль-органы, резистивный мост, в первом плече которого последовательно с резистором включена линия задержки, причем вход устройства соединен с линией задержки, входом второго нуль-органа, первым 20 входом генератора импульсов и с первым выводом резистора второго плеча моста, второй вывод которого подключен к первым входам первого и третьего нуль-органов и к первому выводу резистора третьего плеча моста, второй вывод которого соединен с общей шиной и с первым выводом резистора четвертого плеча моста, второй вывод которого соединен со вторыми входами первого и третьего нуль-органов и резистором первого плеча моста, выход второго нуль-органа соединен со вторым входом счет·* ного устройства, третий вход которого соединен с выходом третьего нуль-органа и вторым входом генератора импульсов, третий ВХОД которого I соединен с выходом первого нуль-органа, а выход с четвертым входом счетного устройства.This goal is achieved by the fact that in the analogue converter 10 a code containing the first zero-organ, the output of which is connected to the first input of the calculating device, a pulse generator, the second and third zero-organs, a resistive bridge, in the first arm of which a delay line is connected in series with the resistor moreover, the input of the device is connected to the delay line, the input of the second zero-organ, the first 20 input of the pulse generator and the first output of the resistor of the second shoulder of the bridge, the second output of which is connected to the first inputs of the first and null organs and to the first output of the resistor of the third arm of the bridge, the second output of which is connected to the common bus and to the first output of the resistor of the fourth arm of the bridge, the second output of which is connected to the second inputs of the first and third null organs and the resistor of the first arm of the bridge, the output of the second a null organ is connected to the second input of the counting device, the third input of which is connected to the output of the third null organ and the second input of the pulse generator, the third INPUT of which I is connected to the output of the first null organ, and the output with the fourth input th counting device.

На фиг. 1 представлена структурная схема предлагаемого преобразо'вателя аналог-код; на фиг. 2 - временная диаграмма работы устройства.In FIG. 1 is a structural diagram of the proposed converter analog-code; in FIG. 2 is a timing diagram of the operation of the device.

Преобразователь аналог-код содержит резистивный мост, в плечах которого находятся резисторы 1, в одном из плеч последовательно с резистором включена линия задержки 2, первый 3, третий 4, второй 5 нуль-органы, генератор б импульсов и счетное устройство^- 7.The analog-code converter contains a resistive bridge, in the shoulders of which there are resistors 1, in one of the arms in series with the resistor there is a delay line 2, the first 3, the third 4, the second 5 zero-organs, the pulse generator b and the counting device ^- 7.

Устройство работает следующим образом.The device operates as follows.

В моменты времени,когда напряжение на входе U₆₎< не изменяется, т.е. U_bx = const потенциалы U_o и и_Е резистивного моста, как это видно из ‘временной диаграммы на фиг. 2, равны.At times when the voltage at the input U ₆₎ <does not change, i.e. U _bx = const potentials U _o and and _{E of the} resistive bridge, as can be seen from the 'timing diagram in FIG. 2 are equal.

Тогда 'j __{u =0} ^иГ ^υ Then 'j _ _{u = 0} ^and Γ ^υ

В это№ случае на входах нуль-органов 3, 4 и 5 входной сигнал отсутствует, генератор импульсов закрыт, и на счетное устройство 7 информация не поступает.In this case, there is no input signal at the inputs of the null organs 3, 4, and 5, the pulse generator is closed, and no information is received at the counting device 7.

При изменении входного сигнала, в зависимости от того возрастает ли входна'я величина или убывает, разность потенциалов на выходах мостовой схемы A-U--Up-U_E имеет, как это видно из временных диаграмм на фиг. 2, положительный (при возрастании) или отрицательный (при убывании) знаки U_D -U_E = 4-iU при U _D > U _Е или . U_D -1)_ε при Ug .When the input signal changes, depending on whether the input value increases or decreases, the potential difference at the outputs of the bridge circuit AU - Up-U _E has, as can be seen from the time diagrams in FIG. 2, positive (with increasing) or negative (with decreasing) signs U _D -U _E = 4-iU for U _D > U _Е or. U _D -1) _ε for Ug.

В зависимости от полярности преобразуемого входного сигнала нульорган 5 вырабатывает единичный уровень при отрицательной полярности входного сигнала и нулевой уровень при положительной.Depending on the polarity of the converted input signal, nullorgan 5 produces a single level with a negative polarity of the input signal and a zero level with a positive one.

Если сигнал дИ на выходе мостовой схемы имеет знак +1.6. + Αϋ , то при достижении величины ди порога срабатывания нуль-органа 3 на соответствующий вход счетного устройства 7 поступает сигнал, соответствующий возрастанию входного сигнала. Аналогично при — д U срабатывает нульорган 4 (фиг. 2).If the dI signal at the output of the bridge circuit has a +1.6 sign. + Αϋ, then when the threshold value of the zero-organ 3 is reached, a signal corresponding to an increase in the input signal is received at the corresponding input of the counting device 7. Similarly, with - q U, nullorgan 4 is triggered (Fig. 2).

Как в первом, так и во втором случаях импульсы с выхода управляемого генератора б поступают на счетное устройство 7.Both in the first and in the second cases, the pulses from the output of the controlled generator b are supplied to the counting device 7.

При изменении крутизны входного .сигнала пропорционально этому изменению изменяется частота генератора импульсов б, что вызывает соответственное изменение кода на j счетном устройстве 7.When changing the slope of the input signal in proportion to this change, the frequency of the pulse generator b changes, which causes a corresponding change in the code on j counting device 7.

Таким образом введение мостовой схемы в нуль-органы 3, 4, 5 и управляемого генератора б импульсов позволяет значительно упростить схему преобразователя аналог-код.Thus, the introduction of a bridge circuit into the null organs 3, 4, 5 and a controlled pulse generator 6 allows us to significantly simplify the analog-to-code converter circuit.

За счет введения новых элементов и связей отработка информации начинается сразу же после поступления на вход приращения входного сигнала и определяется только порогом срабатывания нуль-органов 3, 4.Due to the introduction of new elements and links, the processing of information begins immediately after the input signal increments and is determined only by the response threshold of the null organs 3, 4.

Применение мостовой схемы на входе устройства и введение линии задержки позволяет значительно увеличить помехозащищенность и точность 20 устройства.The use of a bridge circuit at the input of the device and the introduction of a delay line can significantly increase the noise immunity and accuracy 20 of the device.

Управление частотой генератора позволяет расширить функциональные возможности преобразователя аналог-код.Control of the frequency of the generator allows you to expand the functionality of the converter analog-code.

Claims

The invention relates to electrical engineering and can be used mainly in computer systems and devices, automatic control and regulation for converting analog electric signals to code, as well as for matching various types of analog devices with digital ones. A known converter at time, comprising an integrator, keys connected to sources of reference and convertible voltages, as well as a multi-threshold detector determining the polarity and magnitude of the voltages l. The disadvantage of this converter is a reduction in the accuracy and noise immunity of the conversion due to voltage drift at the output of the integrator. Also known is a voltage converter into a code containing a pulse generator, a null organ, a sawtooth voltage generator, and a calculating device I. The disadvantage of this converter is that the coding accuracy is achievable determined by the accuracy of the reference. The purpose of the invention is to improve the accuracy and enhance the functionality of the analog code conversion. The goal is achieved by the fact that the analog code containing the first null organ, the output of which is connected to the first input of the counting device, has a second and third null organs impulse generator, a resistive bridge, in the first arm of which a delay line is connected in series with the resistor the input of the device is connected to the delay line, the input of the second zero-organ, the first input of the pulse generator and the first output of the resistor of the second bridge arm, the second output of which is connected to the first inputs of the first and three There are zero-organs and to the first output of the third shoulder of the bridge resistor, the second output of which is connected to the common bus and the first output of the resistor of the fourth shoulder of the bridge, the second output of which is connected to the second inputs of the first and third zero-bodies and the resistor of the first shoulder of the bridge, the output of the second the zero-organ is connected to the second input of the counting device, the third input of which is connected to the output of the third zero-organ and the second input of the pulse generator, the third input is connected to the output of the first zero-organ, and the output to the fourth input ohm counting device. On .fig. 1 shows the block diagram of the proposed analog-code converter; in fig. 2 - time: the operation diagram of the device. The analog-code converter contains a resistive bridge, in the arms of which resistors 1 are located, in one of the arms a delay line 2, the first 3, the third 4, the second 5 zero-organs, the pulse generator b and the counting device 7 are turned on with the resistor. in the following way. At times when the voltage at the input and output voltage does not change, i.e. ligx const, the potentials UD and Ug of the resistive bridge, as can be seen from the time diagram in FIG. 1 are equal. In this case, the UP-UE does not have an input signal at the inputs of the zero-organs 3, 4, and 5, the pulse generator is closed, and no information is sent to the counting device 7. When the input signal changes, Depending on whether the input value increases or decreases, the potential difference at the outputs of the bridge has i-LJ-Up-Ug, as can be seen from the timing diagrams in FIG. 2, positive (with increasing) or negative (with decreasing) signs of Uj, -Ug -t-uU with U D and E or. Up with Un «i Ug. Depending on the polarity of the converted input signal, the nullorgan 5 generates a single level with a negative polarity of the input signal and a zero level with a positive one. If the control signal on the output of the bridge circuit has .e. + di, then when the value of the di threshold of the zero-body 3 is reached, the corresponding input of the counting device 7 receives a signal corresponding to an increase in the input signal. Similarly, when - e U the zero body 4 is triggered (Fig. 2). In both the first and second cases, the pulses from the output of the controlled oscillator 6 are fed to the jjoe device 7. When the input slope changes, the frequency of the pulse generator b is proportional to the change, which causes a responsible code change on the even device 7 Thus, the introduction of a bridging system into null organs 3, 4, 5, and the generator of impulses used to control the pulses makes it possible to significantly simplify the analog-code converter. Due to the introduction of new communication elements, the processing of information begins immediately after the input signal enters the input signal increment is determined only by the trigger threshold of null organs 3, 4. The use of a bridge circuit on the device and the introduction of a draw line makes it possible to significantly increase the noise immunity and accuracy of the device. The oscillator frequency control allows to extend the functional capabilities of the analog-code converter. Claims of the invention An analog-code converter comprising a first null-organ whose output is connected to the first input of a counting device, a pulse generator, characterized in that, in order to improve accuracy and enhance functionality, it introduces the second and third null-organs , a resistive bridge, in the first arm of which a delay line is connected in series with a resistor, the device input being connected to the delay line, the second zero-organ input, the first input of the pulse generator and the first output of the resistor W bridge, the second output of which is connected to the first inputs of the first and third null organs and to the first output of the third shoulder of the bridge, the second output of which is connected to the common busbar and the first output of the fourth resistor, bridge shoulder, the second output of which is connected to the second inputs of the first and third null organs and the resistor of the first bridge arm, the output of the second null organ is connected to the second input of the counting device, the third input of which is connected to the output of the third nullorgan and the second input of the pulse generator, tert second input coupled to an output of the first zero-body, and an output to a fourth input of the counting device. Sources of information taken into account in examination 1, Japanese Application No. 47-31258, .kl. 98 (5) P 1, 12.08..72.

2. Smolov V.B. et al. Semiconductor encoding and decoding voltage converters, L.Energy, 1967, p. 134, fig. 2-3.

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