SU1270884A1

SU1270884A1 - Device for generaing control command for traffic light signal

Info

Publication number: SU1270884A1
Application number: SU853904989A
Authority: SU
Inventors: Александр Витальевич Кочнев; Юрий Петрович Супряков; Ефим Наумович Розенберг; Иван Андреевич Здоровцов; Вадим Александрович Коляда
Original assignee: Конструкторское Бюро Главного Управления Сигнализации И Связи Мпс Ссср
Priority date: 1985-03-28
Filing date: 1985-03-28
Publication date: 1986-11-15

Abstract

Изобретение относитс к области электротехники, в частности к устройствам формировани и сравнени импульсов. Цель изобретени - повышение быстродействи . Устройство содержит пересчетные блоки 1 и 2, блок 3 синхронизации, усилитель 4, вып15Ямитель 8, блок 7 фильтрации, генератор 5, диодный мост 9 и делитель 6 частоты. Введение элементов ИСКЛЮЧАЩЕЕ ИЛИ 10-14, одновибраторов 15 и 16 контрольного генератора 18, формировател 17 импульсов, блока 19 запуска увеличивает быстродействие устройства , так как оно определ етс а элементами ИСКЛЮЧАЮПЩЕ ШШ и одновибраторами , не зависит от выходной (Л емкости и заложено в длительности импульсов теста. 1 ил. с ю о 00 00 The invention relates to the field of electrical engineering, in particular to devices for forming and comparing pulses. The purpose of the invention is to increase speed. The device contains scaling units 1 and 2, a synchronization unit 3, an amplifier 4, an exhauster 8, a filtering unit 7, a generator 5, a diode bridge 9 and a frequency divider 6. The introduction of the elements EXCLUSIVE OR 10-14, one-shot 15 and 16 of the control generator 18, a pulse shaper 17, the start-up block 19 increases the speed of the device, since it is determined by the elements EXCLUSIVE and SH, and the one-shot, does not depend on the output (L capacitance and embedded in the duration impulses of the test. 1 ill. with s o 00 00

Description

Изобретение относится к электротехнике, в частности к устройствам формирования и сравнения импульсов, и может использоваться в устройствах, где необнаруженный сбой в работе ап- 5 паратуры гложет привести к опасным отказам (например, в устройствах автоматики и телемеханики на ж.д. транспорте),.The invention relates to electrical engineering, in particular to devices for generating and comparing pulses, and can be used in devices where an undetected failure in the operation of the device can lead to dangerous failures (for example, in automation and telemechanics devices in railway transport), .

Цель изобретения - повышение быст- Ю родействия' и надежности.The purpose of the invention is to increase the speed of action 'and reliability.

На чертеже изображена блок-схема устройства.The drawing shows a block diagram of a device.

Устройство для формирования команды управления светофором содержит 15 первый и второй пересчетные блоки 1 и 2, входы которых соединены, блок 3 синхронизации, усилитель 4, генератор 5, последовательно соединенный с делителем 6 частоты, блок'7 фильт- 20 рации, выход которого соединен с входом выпрямителя 8, диодный мост 9, первый, второй, третий, четвертый и пятый элементы ИСКЛЮЧАЮЩЕЕ ИЛИ 10, 11, 12, 13 и 14, первый и второй од- 25 Вибраторы 15 и 16, формирователь 17 импульсов, контрольный генератор 18, блок 19 запуска, первый вход которого соединен с выходом блока 3 синхронизации, выход - с входами пересчетных блоков 1 и 2, а выход второго пересчетного блока 2 соединен с входом первого элемента ИСКЛЮЧАЮЩЕЕ ИЛИ 10 и входом усилителя 4, выход которого соединен с первой выходной шиной 20 устройства, а второй вход - с вторым ³⁵входом блока запуска, с выходом выпрямителя 8 и с второй входной шиной 21 устройства, выход первого элемента ИСКЛЮЧАЮЩЕЕ ИЛИ 10 соединен с первыми входами второго и 'Третьего элементов ИСКЛЮЧАЮЩЕЕ ИЛИ 11 и 12, вторые входы которых подключены соответственно к выходам четвертого 13 и пятого 14 элементов ИСКЛЮЧАЮЩЕЕ ИЛИ, первые входы которых подключены к выходу первого пересчетного блока, а вторые входы подключены соответственно к первому и второму выходам формирователя 17 импульсов, первый и второй входы которого соединены соответст- 50 венно с выходом генератора 5 импульсов и делителем 6 частоты, выходы второго и третьего элементов ИСКЛЮЧАЮЩЕЕ ИЛИ 11 и 12 .подключены соответственно через первый и соответст- 55 венно второй одновибраторы 15 и 16 к входам диодного моста, выходы которого подключены к шинам питания контрольного генератора 18, выход которого соединен с входом блока 7 фильтрации, выход которого соединен с входом выпрямителя 8.A device for generating a traffic light control command comprises 15 first and second counting units 1 and 2, the inputs of which are connected, a synchronization unit 3, an amplifier 4, a generator 5 connected in series with a frequency divider 6, a filtration unit'7, the output of which is connected to rectifier input 8, diode bridge 9, first, second, third, fourth and fifth elements EXCLUSIVE OR 10, 11, 12, 13 and 14, first and second one - 25 Vibrators 15 and 16, pulse shaper 17, control generator 18, block 19 start, the first input of which is connected to the output of block 3 with synchronization, the output is with the inputs of the conversion blocks 1 and 2, and the output of the second conversion block 2 is connected to the input of the first EXCLUSIVE OR 10 element and the input of amplifier 4, the output of which is connected to the first output bus 20 of the device, and the second input to the second ³⁵ input of the block start, with the output of the rectifier 8 and with the second input bus 21 of the device, the output of the first element EXCLUSIVE OR 10 is connected to the first inputs of the second and 'Third elements EXCLUSIVE OR 11 and 12, the second inputs of which are connected respectively to the outputs of the fourth 13 and fifth 14 elements EXCLUSIVE OR, the first inputs of which are connected to the output of the first conversion unit, and the second inputs are connected respectively to the first and second outputs of the pulse shaper 17, the first and second inputs of which are connected respectively to the output of the 5 pulse generator and frequency divider 6, the outputs of the second and the third elements EXCLUSIVE OR 11 and 12. connected respectively through the first and accordingly 55 second single vibrators 15 and 16 to the inputs of the diode bridge, the outputs of which are connected to the power buses of the control generator 18, you the stroke of which is connected to the input of the filtering unit 7, the output of which is connected to the input of the rectifier 8.

Устройство работает следующим образом.The device operates as follows.

При нормальной работе устройства на выходе пересчетных блоков 1 и 2 имеются сигналы управления светофором. Первый сигнал с выхода первого пересчетного блока 1 поступает на вторые входы четвертого и пятого элементов ИСКЛЮЧАЮЩЕЕ ИЛИ 13 и 14, а второй сигнал с выхода второго пересчетного блока 2 - на вход первого элемента ИСКЛЮЧАЮЩЕЕ ИЛИ 10, на второй вход которого по управляющей шине поступает уровень логического 0 или 1, и вход усилителя 4.During normal operation of the device at the output of the counting units 1 and 2 there are traffic control signals. The first signal from the output of the first conversion unit 1 goes to the second inputs of the fourth and fifth elements EXCLUSIVE OR 13 and 14, and the second signal from the output of the second conversion unit 2 goes to the input of the first element EXCLUSIVE OR 10, to the second input of which the logic level goes through the control bus 0 or 1, and amplifier input 4.

В случае равенства сравниваемых сигналов на входах элементов ИСКЛЮЧАЮЩЕЕ ИЛИ 13 и 14 будет первый сравниваемый сигнал, а на выходе элемента ИСКЛЮЧАЮЩЕЕ ИЛИ 10 сигнал, противофазный второму сравниваемому сигналу. При этом на входах элементов ИСКЛЮЧАЮЩЕЕ ИЛИ 11 и 12 будут противофазные сигналы, что приведет к появлению на их выходах сигналов с уровнем логической 1.In case of equality of the compared signals, the inputs of the EXCLUSIVE OR 13 and 14 elements will have the first signal to be compared, and the output of the EXCLUSIVE OR 10 element will have a signal that is opposite to the second compared signal. Moreover, at the inputs of the elements EXCLUSIVE OR 11 and 12 there will be antiphase signals, which will lead to the appearance on their outputs of signals with a logic level of 1.

Для защиты от накопления неисправностей в устройство введен Функционально-тестовый контроль, который работает следующим образом. Формирователь 17 тактовых импульсов, получая сигнал от генератора 5 тактовой частоты и делителя 6 частоты, формирует поочередно на своих выходах короткие импульсы переднего и заднего фронтов генератора 5, которые поочередно поступают на первые входы элементов ИСКЛЮЧАЮЩЕЕ ИЛИ 13 и 14. При этом на время воздействия этих импульсов элементы ИСКЛЮЧАЮЩЕЕ ИЛИ 13 и 14 переводятся в режим инверсии и на их выходах появляются сигналы, равнозначные сигналу с выхода элемента ЙСКЛЮЧАЮЩЕЕ ПЛИ 10, вследствие чего на выходах элементов ИСКЛЮЧАЮЩЕЕ ИЛИ 11 и 12 появляется сигнал с уровнем логического 0. Затем одновибраторы 15 и 16 поочередно опрокидываются и на их выходах присутствуют противофазные сигналы, которые поступают на диодный мост 9. При этом постоянное напряжение с диодного моста 9 подается на контрольный генератор 18 и сигнал, выделенный блоком 7 фильтрации и выпрямленный выпрямителем 8, осуществляет питание усилителя 4. После этого сигнал поступает на шину 20 к схеме управления светофором.To protect against the accumulation of faults, a Functional Test Control has been introduced into the device, which works as follows. The generator 17 clock pulses, receiving a signal from a clock generator 5 and a frequency divider 6, generates alternately at its outputs short pulses of the leading and trailing edges of the generator 5, which alternately arrive at the first inputs of the elements EXCLUSIVE OR 13 and 14. Moreover, for the duration of these of pulses, the EXCLUSIVE OR elements 13 and 14 are put into inversion mode and at their outputs signals appear that are equivalent to the signal from the output of the EXCLUSIVE PLI 10 element, as a result of which the EXCLUSIVE OR 11 and 12 outputs appear a signal with a logic level of 0. Then the one-shots 15 and 16 are alternately tipped over and there are out-of-phase signals at their outputs, which are fed to the diode bridge 9. In this case, a constant voltage from the diode bridge 9 is supplied to the control generator 18 and the signal extracted by the filtering unit 7 and rectified by rectifier 8, provides power to amplifier 4. After that, the signal is fed to bus 20 to a traffic light control circuit.

В случае несовпадения сигналов происходит одновременное опрокидывание одновибраторов 15 и 16, что приводит к одинаковым сигналам на их выходах. При отсутствии сигнала на выходе диодного моста 9 подключается Ю блок 19 запуска и прекращается питание усилителя 4, а сигнал блока 3 синхронизации поступает на входы пересчетных блоков 1 и 2, приводя их в начальное состояние. Поступление сиг· *5 нала на шину 20 в схему управления светофором прекращается до восстановления нормальной работы устройства.In the event of a mismatch of the signals, the single vibrators 15 and 16 are simultaneously tipped over, which leads to the same signals at their outputs. In the absence of a signal at the output of the diode bridge 9, the start block 19 is connected and the power of the amplifier 4 is stopped, and the signal of the synchronization block 3 is fed to the inputs of the counting blocks 1 and 2, bringing them to their initial state. The receipt of signal * * 5 on the bus 20 in the traffic light control circuit stops until the normal operation of the device is restored.

Таким образом, быстродействие дан-20 ного устройства определяется элементами ИСКЛЮЧАЮЩЕЕ ИЛИ и одновибраторами, не зависит от выходной емкости и заложено в длительности импульсов теста (t_T =Т_Г). 25Thus, the speed of this device is determined by the elements EXCLUSIVE OR and single-shot, does not depend on the output capacity and is embedded in the duration of the test pulses (t _T = T _G ). 25

При этом быстродействие постоянно повторяется, а время задержки определяется временем задержки одновибратора. Период сигнала делителя 6 частоты равен двум временам задержки зо одновибраторов (Tq=2t_oa_M).In this case, the performance is constantly repeated, and the delay time is determined by the delay time of the single-shot. The period of the signal of the frequency divider 6 is equal to two delay times of the single vibrators (Tq = 2t _o a _M ).

Изменяя время задержки одновибратора (t_odH ) и соответственно этому период сигнала делителя 6 и частоты (X_q), можно отключать сигнал на выходе устройства на любое время.By changing the delay time of the one- _shot (t _odH ) and, accordingly, the period of the signal of the divider 6 and frequency (X _q ), you can turn off the signal at the output of the device at any time.

Claims

I The invention relates to electrical engineering, in particular to devices for forming and comparing pulses, and can be used in devices where an undetected failure in the operation of the equipment can lead to dangerous failures (for example, in automation and telemechanics devices at railway, transport). The goal of the invention is to increase speed and reliability. The drawing shows a block diagram of the device. The device for generating a traffic light control command comprises first and second counting units 1 and 2, whose inputs are connected, synchronization unit 3, amplifier 4, generator 5 connected in series with frequency divider 6, filtering unit 7, whose output is connected to the rectifier input 8, diode bridge 9, first, second, third, fourth and fifth elements EXCLUSIVE OR 10, 11, 12 ,, 13 and 14, first and second oscillators 15 and 16, driver 17 pulses, control generator 18 start block 19, first input connected to the output of block 3 synchronous The output is connected to the inputs of counting blocks 1 and 2, and the output of the second counting block 2 is connected to the input of the first element EXCLUDED OR 10 and the input of amplifier 4, the output is connected to the first output bus 20 of the device, and the second input is connected to the second input of the unit. the start, with the output of the rectifier 8 and the second input bus 21 of the device, the output of the first element EXCLUSIVE OR 10 is connected to the first inputs of the second and third elements EXCLUSIVE OR 11 and 12, the second input of which is connected respectively to the outputs of the fourth 13 and the fifth 14 elements EXCEL ORDING OR, the first inputs of which are connected to the output of the first conversion unit, and the second inputs are connected respectively to the first and second outputs of the pulse body 17, the first and second inputs of which are connected respectively to the output of the generator 5 pulses and frequency divider 6, the outputs of the second and third IC elements} PERSONAL OR 11 and 12 are connected respectively through the first and second respectively single-oscillators 15 and 16 to the inputs of the diode bridge, the outputs of which are connected to the power supply buses 4 of the control of the 18th generator It is connected to the input of the filtering unit 7, the output of which is connected to the input of the rectifier 8. The device operates as follows. During normal operation of the device at the output of the scaling blocks 1 and 2 there are traffic light control signals. The first signal from the output of the first conversion unit 1 is fed to the second inputs of the fourth and fifth elements EXCLUSIVE OR 13 and 14, and the second signal from the output of the second conversion unit 2 to the input of the first element EXCLUSIVE OR 10, to the second input of which via the control bus the level is logic O or l, and the input of the amplifier 4. In the case of equality of the compared signals at the inputs of the EXCLUSIVE OR elements 13 and 14 there will be the first comparative signal, and at the output of the element EXCLUSIVE OR 10 the signal anti-phase to the second compared signal. At the same time, at the inputs of the EXCLUSIVE OR elements 11 and 12 there will be antiphase signals, which will result in signals at their outputs with a logic level 1. To protect against the accumulation of faults, a functional-test control was introduced into the device, which operates as follows. The shaper 17 clock pulses, receiving a signal from the oscillator 5 clock frequency and the divider frequency 6, alternately generates at its outputs short pulses of the front and rear edges of the generator 5, which alternately arrive at the first inputs of the elements EXCLUSIVE OR 13 and 14. Look at this time pulses the elements EXCLUSIVE OR 13 and 14 are transferred to the inversion mode and at their outputs there appear signals equivalent to the signal from the output of the EXCLUSIVE EGSh 10 element, as a result of which at the outputs of the EXCLUSIVE OR 11 and 12 to is a signal with a logic level of O. Then the single-shot 15 and 16 alternately turn over and at their outputs there are anti-phase signals that are fed to the diode bridge 9. At the same time, the constant voltage from the diode bridge 9 is fed to the control generator 18 and the signal allocated by the unit 7 filtering and rectified by the rectifier 8, provides power to the amplifier 4. After that, the signal goes to the bus 20 to the traffic light control circuit. In the event of a mismatch of signals, simultaneous overturning of one-shot 15 and 16 occurs, which leads to the same signals on and outputs. In the absence of a signal at the output of the diode bridge 9, the start-up unit 19 is connected and the power supply to the amplifier 4 is stopped, and the signal of the synchronization unit 3 is fed to the inputs of the recalculation units 1 and 2, and their initial state is driven. The arrival of the signal to the bus 20 in the traffic light control circuit is stopped until the normal operation of the device is restored. Thus, the speed of this device is determined by the elements EXCLUSIVE OR or one-shot, it does not depend on the output capacitance incorporated in the test pulse duration (t. T). The response time is constantly repeated, and the delay time is determined by the delay time of the one-shot. The period of the signal divider 6 frequency is equal to two delay times of one-shot (Td 2 coats). By changing the delay time of the one-shot (tpQp) and, accordingly, the period of the divider 6 signal and frequency (Xq), you can turn off the signal at the output of the device for any time. The invention The device for forming a traffic light control command, comprising the first and second counting blocks, a synchronization unit, an amplifier, a generator connected in series with a frequency divider, a filter unit844, whose output is connected to the rectifier input, a diode bridge, characterized in that in order to increase speed and reliability, the first, second, third, fourth and fifth elements are EXTRACTED OR, the first and second single-oscillators, pulse shaper, control signal generator, block for the first input of which is connected to the output of the synchronization unit, and the output is connected to the inputs of the conversion blocks, and the output of the second conversion block is connected to the first input of the first element EXCLUSIVE OR and to the first input of the amplifier whose output is connected to the first input bus, the second input is the second input of the startup unit, with the output of the rectifier and the second output bus, the second input of the first element EXCLUSIVE OR connected to the input bus, the output connected to the first inputs of the second and third elements EXCLUSIVE OR, the second inputs which are connected respectively to the outputs of the fourth and fifth elements EXCLUSIVE OR, the first inputs of which are connected to the output of the first conversion unit, and the second inputs are connected respectively to the first and second outputs of the pulse former, the first and second inputs of which are connected respectively to the output of the pulse generator and frequency divider , the outputs of the second and third elements EXCLUSIVE OR are connected respectively through the first and respectively the second one-shot to the first and second inputs of the diode bridge, p The first and second outputs of which are connected respectively to the first and second power buses of the control generator, the output of which is connected to the input of the filtering unit.