SU960880A1

SU960880A1 - Time interval to code converter

Info

Publication number: SU960880A1
Application number: SU802865058A
Authority: SU
Inventors: Николай Тихонович Малюк
Original assignee: Предприятие П/Я А-7374
Priority date: 1980-01-07
Filing date: 1980-01-07
Publication date: 1982-09-23

Description

(S) ПРЕОБРАЗОВАТЕЛЬ ВРЕМЕННЫХ ИНТЕРВАЛОВ . ,; .. 1 ., Изобретение относитс к автоматик и вычислительной технике и может быт использовано дл св зи аналоговых источников информации с цифровым вычислительным устройством. Известны преобразователи временных интервалов в код, содержащие триггеры, счетчики, элементы И, дифференцирующий элемент, дешифратор, генератор импульсов t1. Недостатком известного преобразовател вл етс сложность его исполь зовани при измерении временных смещ ний, превышающих период следовани старт-tcTon)- импульсов. Наиболее близким к изобретению Явл етс преобразователь временных интервалов в код, содержащий первый и второй триггеры, один вход второго .триггера через первый элемент И соединен с выходом источника стоп-импульсов , единичные выходы первого и второго триггеров подключены соответственно к первым входам второго В КОД . ,и третьего элементов И, генератор им{Пульсов , счетчик, реверсивный счет чик , третий триггер, триггер знака четвертый, п тый, шестой, седьмой, восьмой и дев тый элементы И. ВыхЬд генератора импульсов подключен к вторым входам второго и третьего элементов И, третьи входы которых соединены соответственно с нулевым выходом второго и единичным входом первого триггеров, единичный вход первого триггера соединен с источником старт-импульсов, а выход подключен к другому входу первого элемента И, выход второго элемента И подключен к счетному входу счетчика, выход третье;го элемента И подключен к нулевым ,входам счетчика, первого и второго Триггеров, единичные и нулевые выходы двух старших разр дов счетчика i подключены к одним входам четвертого , п того, шестого и седьмого элементов И, другие входы которых соеди нeны с выходом первого элемента И, а(S) TRANSFORMER OF TIME INTERVALS. ,; .. 1., The invention relates to automation and computing and can be used to connect analog information sources with a digital computing device. Known transducers of time intervals in the code, containing triggers, counters, elements And, differentiating element, decoder, pulse generator t1. A disadvantage of the known transducer is the difficulty of its use in measuring temporal displacements exceeding the period following the start-tcTon) pulses. Closest to the invention is a converter of time intervals into a code containing the first and second triggers, one input of the second trigger, through the first element I is connected to the output of the source of stop pulses, the single outputs of the first and second triggers are connected respectively to the first inputs of the second B of the CODE. , and the third elements And, the generator them {Pulses, counter, reversible counter, third trigger, the fourth character trigger, fifth, sixth, seventh, eighth and ninth elements I. The output of the pulse generator is connected to the second inputs of the second and third elements And whose third inputs are connected respectively to zero output of the second and single input of the first flip-flops, the single input of the first flip-flop is connected to the start-pulses source, and the output is connected to another input of the first element And, the output of the second element And is connected to the counting input do the counter, the third output; the first element And is connected to zero, the counter inputs, the first and second Triggers, the single and zero outputs of the two most significant bits of counter i are connected to one input of the fourth, fifth, sixth and seventh elements AND, the other inputs of which are not with the output of the first element And, and

выходы подключены к единичным и нулевым входам третьего и знакового три|- герое, единичные и нулевые выходы которых через дифференцирующие элементы подключены к входам восьмого и дев того элементов И, выходы которых подключены к входам сложени и вычитани реверсивного счетчика 2. Недостатком такого преобразовател вл етс его невысока надежность .the outputs are connected to the single and zero inputs of the third and sign three | - heroes, whose single and zero outputs are connected through the differentiating elements to the inputs of the eighth and ninth elements AND, whose outputs are connected to the addition and subtraction inputs of a reversible counter 2. The disadvantage of such a converter is its low reliability.

Целью изобретени вл етс повышение надежности преобразовател .The aim of the invention is to increase the reliability of the converter.

Поставленна цель достигаетс тем что в преобразователь временных интервалов в код, содержащий первый и второй триггеры, один вход второго триггера через первый элемент И соединен с выходом источника стоп-импульсов , единичные выходы первого и второго триггеров подключены соответственно к первым входам второго и третьего элементов И, генератор импульсов, счетчик, реверсивный счетчик, третий триггер, триггер знака, четвертый, п тый, шестой , седьмой, восьмой и дев тый элементы И, введены коммутатор, дешифратор и три элемента ИЛИ, выход источника старт-импульсов подключен к второму входу второго элемента И, втрому выходу второго триггера, одному входу третьего триггера и через четвертый элемент И - к первому входу первого триггера, выход источника стоп-импульсов подключен к второму входу третьего элемента И, второму входу первого триггера и другому входу третьего триггера, инверсный выход первого триггера подключен к третьему входу BTopoi o триггера, одному входу триггера знака и одному входу первого элемента ИЛИ, инверсный выход второго триггера подключен к третьему входу первого триггера, .другому входу триггера знака и дру|Гому входу первого элемента ИЛИ, парафазные выходы триггера знака- подключены к одним входам соответственно п того и шестого элементов И и к первому и второму входам коммутатора , выходы которого подключены к входам сложени и вычитани реверсивного счетчика, выход реверсивного счетчика подключен к дешифратору, один выход дешифратора подключен к третьим входам второго и третьего элементов И, выходы которых подключены к одним входам соответственноThe goal is achieved by the fact that in the time converter into a code containing the first and second triggers, one input of the second trigger through the first element I is connected to the output of the source of stop pulses, the single outputs of the first and second triggers are connected respectively to the first inputs of the second and third elements And , pulse generator, counter, reversible counter, third trigger, sign trigger, fourth, fifth, sixth, seventh, eighth and ninth And elements, introduced a switch, a decoder and three elements OR, output the source of start-pulses is connected to the second input of the second element I, to the second output of the second trigger, to one input of the third trigger and through the fourth element I to the first input of the first trigger, the output of the source of the stop pulses is connected to the second input of the third element I, to the second input of the first trigger and another input of the third trigger, the inverse output of the first trigger is connected to the third input of the BTopoi o trigger, one input of the sign trigger and one input of the first element OR, the inverse output of the second trigger is connected to the third the first trigger trigger, the other input of the sign trigger and the other | Goma input of the first element OR, the paraphase outputs of the sign trigger - are connected to one input of the fifth and sixth And elements respectively and to the first and second inputs of the switch, the outputs of which are connected to the addition and subtraction inputs reversible counter, the output of the reversible counter is connected to the decoder, one output of the decoder is connected to the third inputs of the second and third elements And, the outputs of which are connected to the same inputs

второго и третьего элементов ИЛИ, выходы второго и третьего элементов ИЛИ подключены к третьему и четвертому входам коммутатора, соответственно , другой выход дешифратора подключен к другим входам п того и шестого элементов И, и к первым входам седьмого и восьмого элементов И, вторые входы которых соединены с парфазными выходами третьего триггера, третьи входы - с единичными входами третьего триггера, а выходы седьмого и восьмого элементов И подключены к другим входам второго и третьего элементов ИЛИ, генератор импульсов через дев тый элемент И, управл ющий вход которого соединен с выходом первого элемента ИЛИ, подключе к счетчику.the second and third elements OR, the outputs of the second and third elements OR are connected to the third and fourth inputs of the switch, respectively, another output of the decoder is connected to other inputs of the fifth and sixth elements AND, and to the first inputs of the seventh and eighth elements AND, the second inputs of which are connected with the partial outputs of the third trigger, the third inputs with the single inputs of the third trigger, and the outputs of the seventh and eighth elements AND are connected to other inputs of the second and third elements OR, the pulse generator through nine tons second AND gate, a control input coupled to an output of the first OR gate, connected to the counter.

На чертеже представлена структурна схема преобразовател .The drawing shows a block diagram of the converter.

Преобразователь содержит первый 1 и второй 2 триггеры, один вход триггера 2 через первый элемент И 3 соединен с источником k стоп-импульсов, единичные выходы триггеров 1 и 2 подключены к первым входам элементов И 5 и 6, выход источника 7 старт-импульсов подключен к второму входу элмента И 5 второму входу триггера 2, одному входу триггера 8 и через элемент И 9 к первому входу триггераThe converter contains the first 1 and second 2 triggers, one input of the trigger 2 through the first element And 3 is connected to the source k of stop pulses, the single outputs of the trigger 1 and 2 are connected to the first inputs of the elements 5 and 6, the output of the start-7 pulses is connected to the second input of the terminal I 5 to the second input of trigger 2, one input of the trigger 8 and through the element I 9 to the first input of the trigger

1,выход источника подключен к второму входу элемента И 6, второму входу триггера 1 и другому входу тригера В, инверсный выход триггера 1 подключен к третьему входу триггера1, the source output is connected to the second input element AND 6, the second input of the trigger 1 and the other input of the trigger B, the inverse output of the trigger 1 is connected to the third input of the trigger

2,одному входу триггера .10 знака и одному входу элемента ИЛИ 11, инверсный выход триггера 2 подключен к третьему входу триггера 1, другому входу триггера 10 знака и другому входу элемента 11, парафазные выходы триггера 10 подключены к одним входам п того 12 и шестого 13 элементов И и к первому и второму .входам коммутатора 1, выходы которого подключены к входам сложени 2, one input of the trigger .10 mark and one input of the element OR 11, the inverse output of the trigger 2 is connected to the third input of the trigger 1, another input of the trigger 10 of the character and another input of the element 11, paraphase outputs of the trigger 10 are connected to the same inputs of the fifth 12 and sixth 13 elements And to the first and second inputs of the switch 1, the outputs of which are connected to the inputs of the

Claims

and subtracting the reversible counter 15, the outputs of the reversible counter 15 are connected to the decoder 16, one output of the decoder 16 is connected to the third inputs of elements 5 and 6, the outputs of which are connected to one input of the elements -OR 17 and 18, respectively, the outputs of elements 17 and 18 are connected to the third and to the fourth inputs of the switch H, another output of the DISPLAYER 16 is connected to other inputs of elements 12 and 13 and to the first inputs of elements AND 19 and 20 whose second inputs are connected to the paraphase outputs of the trigger 8, the third inputs with the single inputs of the trigger 8, and output The elements 19 and 20 are connected to other inputs of elements 17 and 18, the pulse generator 21 is connected through the ninth element I 22, the control input of which is connected to the output of the element 11 connected to counter 23. The converter works as follows. Initially, the counters 23 and 15 are cleared and the three headers 1, 2 and 8 are set to state 1. In the absence of phase mismatch between the input pulses of sources 7 and k, the flip-flops 1 and 2 are in the state O, the element is closed, and the generator pulses 21 is not received at the input of the counter 23, its code is O. The trigger 10 may take arbitrary status in this case, the signals of the unit level at the outputs of the switch 1, the state of the counter 15 does not change, the output of the decoder 1b is connected to the elements 19 and 20 - O, at the outputs of elements 12 and 13 - 1, el The e / cops 3 and 9 are open, at the other output of the decoder 16 - 1. At time t, the signal from source A is lost from signal from source 7. The signal from source 7 through element 9 enters the control input trigger 1 and switches it to state 1 The same signal confirms the trigger 2, the element 22 opens and the generator 23 pulses start to the input of the counter 23. The trigger 10 and the trigger 8 are set to state 1. The source signal C at the time of its leading edge trigger 1 turns off on its inverse output is set high potential. In this case, the trigger 2 does not turn on, since at its information input a single level signal appears only after the pulse C passes and, accordingly, the trigger 1 is turned off. The trigger 8 also turns off. With an increase in the time shift between the pulses of sources 7 and there comes a time t at which the pulse 7 confirms the source 7 of state 1 of the flip-flops 1 and 8. This pulse after 06 elements 5, 17 and switch 1 goes to the summing input of counter 15. The output signal the decoder 16, the elements 5 and 6 are closed, and the elements 19 and 20 are opened, the output signal of the element 13, the element 3 is closed. With a further increase in the time shift, the time will come again when two input pulses are used: Target 7. In this case, the pulse through elements 20 and 17 and switch I will go to the summing input of counter 15. The source pulse triggers 1 and 8 again return to the original state. If immediately after the passage of the source C pulse, the direction of change of the time interval is changed or the rate of its change is reduced, then a second pulse occurs at the input of source A before the arrival of the pulse at the input of source 7. Then the output impulse of the element AND 19 through the element 18 and the switch k will go to the subtractive input of the counter 15 and its code will decrease by one. In this case, the trigger 2 does not turn on, since element 3 is closed by the output signal of element 13. As the rate of change of the time interval decreases, the moment again comes when an input signal appears twice at the input of the source k, the unit level signal again appears at the output of element 19 with the duration of the input signal, which through element 18 and switch H will go to the subtracting input of counter 15 and its code will become zero, elements 20 and 19 will close, output 13 will have a high potential, element 3 will open for passage waiting for the input signal source k to the trigger input. The switch T with a single state of the trigger 10 characters passes signals from the output of the element 17 to the summing input, and the ac of the output of the element 18 to its subtractive input. In the zero state of the 10-character trigger, the switch H prop will truncate the signals from the output of element 18 to the summing input, and from the output of element 17 to the subtractive input. With a further decrease in the rate of time change (the interval to O and its reverse, there comes a time t when the signal on input i arrives at the zero state of trigger 1. Trigger 2 turns on state 1, trigger 10 signs turn on state O. On the output of element 11po is the signal element 22 is opened, the pulses of generator 21 are fed to the input of counter 23, and its code increases with a further change in the time interval. The operation of the converter is similar to that described above with the only difference that elements D, 6, 19, 18, and 12. In the proposed converter, the state of the character trigger flushes or changes with the frequency of the time slots, which increases the reliability of the converter as a whole. Formula of the invention The time converter in the code containing the first and second triggers, one output of the second three Hera through the first element And is connected to the output of the source of the stop pulses, the single outputs of the first and second triggers are connected respectively to the first inputs of the second and third elements And, the pulse generator, Fourth, fourth, fifth, sixth, seventh, eighth and tenth elements And, about t and h and r and so that, in order to improve the reliability of the converter, into it A switch, a decoder and three OR elements are introduced. The output of the start-pulse source is connected to the Mountain input of the second element AND, the second input of the second trigger, one input of the third trigger, and through the fourth element I to the first input of the first pulse, the source of the stop pulses is connected to the second input the third element And, wto The first input of the first trigger and the other input of the third 08; the second trigger, the inverse output of the first trigger is connected to the third input of the second trigger, one input of the sign trigger and one input of the first OR element, the inverse output of the second trigger, another input of the trigger trigger and another input of the first element OR, paraphase outputs of the sign trigger are connected to one input of the fifth and sixth elements AND, respectively, and to the first and second inputs of the switch, the outputs of which are connected to the inputs from The output and retraction of the reversible counter, the output of the reversible counter is connected to the decoder, one output of the decoder is connected to the third inputs of the second and third elements AND, the outputs of which are connected to one input of the second and third elements OR, respectively, the outputs of the second and third elements OR are connected to the third and fourth the switch inputs, respectively, another output of the decoder is connected to other inputs of the fifth and sixth And elements and to the first inputs of the seventh and eighth And elements, the second inputs of which are Eny with paraphase outputs of the third trigger, the third inputs with single inputs of the third trigger, and the outputs of the seventh and eighth elements And connected to other outputs of the second and third elements OR, the pulse generator through the ninth element And, the control input is connected to the output of the first element OR, connected to the meter. Sources of information taken into account in the examination 1. The author's certificate of the USSR W 409261, cl. G 08 C 9/00, 1971.

2. Electromechanical angle transducers with electrical reduction. Ed. A. Akhmetzhanova, M., Energie, 1978, p. 201, fig. 6-9 (prototype)