SU951361A2

SU951361A2 - Device for transmitting data along communication lines

Info

Publication number: SU951361A2
Application number: SU803002688A
Authority: SU
Inventors: Виктор Михайлович Кузавков
Original assignee: Научно-Исследовательский Институт Управляющих Вычислительных Машин
Priority date: 1980-11-06
Filing date: 1980-11-06
Publication date: 1982-08-15

Description

Изобретение относится к технике связи, и может быть использовано в дискретных устройствах автоматики и вычислительной техники.The invention relates to communication technology, and can be used in discrete automation devices and computer technology.

По основному авт. св. № 888167 Известно устройство, содержащее первый 5 и второй усилители, выходы которых соединены с линиями связи с входами соответственно первого и второго элементов НЕ, первый и второй элементы И-НЕ, выходы которых подключены соответствен- ^,0но к входам первого и второго усилителей, триггер, выходы которого соединены с первыми входами элементов И-НЕ, выход первого элемента НЕ подключен к первому входу триггера и к второму вхо- ¹⁵ду второго элемента И—НЕ, выход второго элемента НЕ соединен с вторыми входами триггера и первого элемента И-НЕ СИ - - 20 ^: Недостаток данного устройства состоит в низкой надежности, так как отказ одной линии связи, например, короткое замыкание на землю, что соответствует установлению в линии логического 'О', приводит к отказу другой линии, поскольку логический *0 в линиях отождествляется с наличием информации и передается устройством из одной линии связи в другую. При указанных отказах достоверность передачи информации уменьшается, так как приемники сигналов принимают ложную информацию.According to the main author. St. No. 888167 A device is known that contains the first 5 and second amplifiers, the outputs of which are connected to communication lines with the inputs of the first and second elements NOT, respectively, the first and second elements NAND, the outputs of which are connected respectively ^{, 0} but to the inputs of the first and second amplifiers, trigger outputs are connected to first inputs of aND-NO elements, an output of first NOT connected to the first input flip-flop and to the second row ¹⁵ vho- second aND-NO, the output of the second member is coupled to the trigger and second inputs of first aND-NO SI - - 20 ^: The disadvantage of this device is its low reliability, since a failure of one communication line, for example, a short circuit to ground, which corresponds to the establishment of a logical “O” in the line, leads to a failure of the other line, since the logical * 0 in the lines is identified with the presence of information and transmitted by the device from one communication line to another. With these failures, the reliability of the transmission of information decreases, since the signal receivers receive false information.

) Цепь изобретения - повышение достоверности и надежности устройства.) The chain of the invention is to increase the reliability and reliability of the device.

Поставленная цель достигается тем, что в устройство для передачи информации между линиями связи, введены дискриминатор. длительности импульсов, триггер, элемент И и элемент ИЛИ, входы которого подключены к выходам первого И второго элементов НЕ, выход элемента ИЛИ через дискриминатор длительности импульсов соединен с нулевым входом триггера, выход которого соединен с третьими входами элементов И-НЕ, входы элемента И подключены к линиям связи,This goal is achieved by the fact that a discriminator is introduced into the device for transmitting information between communication lines. pulse duration, trigger, AND element, and OR element, the inputs of which are connected to the outputs of the first AND second elements NOT, the output of the OR element through a pulse duration discriminator is connected to the zero input of the trigger, the output of which is connected to the third inputs of the AND elements, the inputs of the AND element are connected to communication lines

95136 а выход соединен с единичным входом триггера.95136 and the output is connected to a single trigger input.

На чертеже приведена функциональная схема устройства.The drawing shows a functional diagram of the device.

Устройство содержит первый и второй ₅усилители 1 и 2, первую и вторую линии связи 3 и 4, первый и второй элементы И-НЕ 5 й 6, первый и второй элементы НЕ 7 и 8, триггер 9, элемент ИЛИ 10, дискриминатор 11 длительности импульсов,, q триггер 12 и элемент И 13.The device contains the first and second ₅ amplifiers 1 and 2, the first and second communication lines 3 and 4, the first and second elements AND-NOT 5th 6, the first and second elements NOT 7 and 8, trigger 9, element 10, discriminator 11 duration pulses ,, q trigger 12 and the element And 13.

Для рассмотрения работы устройства следует сделать следующие пояснения. Магистральные усилители 1 и 2 имеют по выходу два состояния. В первом со- ' 15 стояния они имеют низкое выходное сопротивление и замыкают лийии связи 3 и 4 на землю, обеспечивая в этих линиях потенциал логического 0. Во втором состоянии магистральные усилители 20 1 и 2 имеют высокое выходное сопротивление, что позволяет им не влиять на потенциал в магистральных линиях 3 и 4. В это время в магистральных линиях 3 и 4 с помощью схем согласования (не 25 показаны) устанавливается потенциал логической '1', или потенциал логического 'О’, если какой-то из абонентов, работающих с данной линией связи передает ин- . формацию. Поскольку магистральные ли- ₃₀нии связи работают с абонентами в режиме разделения времени, то в данный момент времени с линиями может работать только один абонент. В следующий интервал времени работает другой абонент, и т.д. Триггер 9 является RS триггером. Пусть это будет триггер, первый вход которого является входом R , а второй, вход - S . В исходном состоянии с магистральными пиниями связи 3 и 4 абоненты не работают и в этих линиях установлен потенциал,соответствующий логической 1.To consider the operation of the device, the following explanations should be made. The main amplifiers 1 and 2 have two states of output. In the first state, they have a low output impedance and close the lines 3 and 4 to ground, providing a logical 0 potential in these lines. In the second state, the main amplifiers 20 1 and 2 have a high output impedance, which allows them not to affect potential in trunk lines 3 and 4. At this time, in trunk lines 3 and 4 using matching schemes (not 25 shown), the logical potential is '1', or the logical potential is 'O', if any of the subscribers working with this the communication line transmits information. formation. Since the backbone connection ₃₀ Li- SRI operate with subscribers in time-sharing mode, the active time lines can work with only one subscriber. In the next time interval another subscriber is working, etc. Trigger 9 is an RS trigger. Let it be a trigger, the first input of which is input R, and the second, input - S. In the initial state, with the communication trunk pins 3 and 4, the subscribers do not work and the potential corresponding to logical 1 is established in these lines.

Устройство работает следующим образом. . ₄₅ The device operates as follows. . ₄₅

Когда с пинией связи, например, 3, работает какой-то из абонентов, на выходе элемента НЕ 7 устанавливается логический 0, а на его выходе формируется логическая 1, которая поступает на вход триггера 9. Триггер 9 переключается'¹в логический 0, на его инверсном выходе формируется логическая 1, которая вызывает переключение элемента И-НЕ 6 в логический О. Этот логический 0 поступает через магистральный усилитель 2 в магистральную линию связи 4 к абонентам этой линии. Логический О' с прямого выхода триггера 9 постуWhen one of the subscribers is working with the communication line, for example, 3, a logical 0 is set at the output of the element NOT 7, and a logical 1 is formed at its output, which is fed to the input of trigger 9. Trigger 9 switches' ¹ to logical 0, to its inverse output forms logical 1, which causes the AND-NOT 6 element to switch to logical O. This logical 0 enters through the main amplifier 2 to the main communication line 4 to the subscribers of this line. Logical O 'with direct trigger output 9 post

4 пает на второй вход элемента И—НЕ 5 и блокирует прохождение логической '1' с выхода элемента НЕ 8 через этот элемент, на выходе элемента И-НЕ 5 остается уровень логической '1', а магистральный усилитель 1 продолжает оставаться в состоянии, когда его выходное сопротивление велико и он является фактически отключенным от линии связи 3.4 falls on the second input of the AND-NOT 5 element and blocks the passage of the logical '1' from the output of the HE 8 element through this element, the output level of the AND-NOT 5 element remains the logic level '1', and the main amplifier 1 continues to remain in a state when its output impedance is large and it is actually disconnected from communication line 3.

После окончания передачи информации в магистральных линиях связи 3 и 4 устанавливается потенциал логической 1, устройство приходит в свое исходное состояние. Триггер 9 остается в том состоянии, в котором он находился при последней передаче. Если следующий абонент, передающий информацию, будет абонентом магистральной линии 3, то триггер 9 продолжает оставаться в состоянии логического 0.After the transfer of information in the main communication lines 3 and 4, the potential of logical 1 is established, the device comes to its original state. Trigger 9 remains in the state in which it was in the last gear. If the next subscriber transmitting the information is the subscriber of the trunk line 3, then trigger 9 continues to remain in the state of logical 0.

Процесс передачи информации из магистральной линии 4 в магистральную линию 3 аналогичен рассмотренному за исключением той разницы, что триггер 9 устанавливается в состояние логической 1, а информация поступает в линию связи 3 через элемент НЕ 8, элемент И-НЕ 5 и магистральный усилитель 1.The process of transferring information from trunk line 4 to trunk line 3 is similar to that considered except for the difference that trigger 9 is set to logical 1, and information enters communication line 3 through element NOT 8, AND-NOT 5 element and main amplifier 1.

При отказе одной из линий связи 3 иIn case of failure of one of the communication lines 3 and

4, в результате чего в линии устанавливается логический 0, в известном устройстве в другой линии также устанавливается логический 'О'. Обмен информацией по обоим пиниям связи прекращается. В предлагаемом устройстве отказ в одной из линий, предположим, короткое замыкание на землю в линии связи 4, не приводит к отказу линии связи 3. Это достигается следующим образом. Логический 0 в линии связи 4 приводит к формированию на выходе элемента НЕ 8 лопгческой '1', которая поступает через элемент ИЛИ 10 на вход дискриминатора 11 длительности импульсов. Если длительность импульса на входе дискриминатора 11 длительности импульсов превышает установленное значение, например, превышает время, отводимое абоненту для работы с пинией связи, то сигнал с выхода дискриминатора 11 длительности импульсов установит триггер 12 в логический О'. Сигнал логического '0' с выхода триггера 12 заблокирует прохождение информационных сигналов через элементы И-НЕ 5 и 6 в линии связи и 4, Таким, образом, ложная информация из линии связи 4 в линию связи 3 не поступает, а абоненты, подключенные к линии связи 3 могут продолжать свое .нормальное функционирование. То же самое происходит при отказе в линйи связи 3.4, as a result of which a logical 0 is set in the line, and a logical 'O' is also set in another line in the known device. The exchange of information on both pins of communication is terminated. In the proposed device, a failure in one of the lines, suppose a short circuit to ground in the communication line 4, does not lead to a failure of the communication line 3. This is achieved as follows. Logical 0 in the communication line 4 leads to the formation at the output of the element NOT 8 of a pulsic '1', which enters through the element OR 10 at the input of the discriminator 11 of the pulse duration. If the pulse width at the input of the discriminator 11 pulse duration exceeds the set value, for example, exceeds the time allotted to the subscriber to work with the communication line, then the signal from the output of the discriminator 11 pulse duration will set the trigger 12 to logical O '. The logical signal '0' from the output of trigger 12 will block the passage of information signals through the NAND 5 and 6 elements in the communication line and 4. Thus, false information does not come from communication line 4 to communication line 3, and subscribers connected to the line 3 links can continue their normal functioning. The same thing happens when the link fails 3.

После устранения отказа устройство автоматически приходит в исходное состояние. Допустим, в данный момент времени в линии связи 3 потенциал логической 1, что соответствует исходному состоянию линии связи 3, а в линии связи 4 потенциал логического О', что соответствует отказу линта связи 4. После устранения отказа в линта связи 4 устанавливается потенциал логической 1.After eliminating the failure, the device automatically returns to its original state. Suppose, at a given moment in the communication line 3, the potential is logical 1, which corresponds to the initial state of the communication line 3, and in the communication line 4 the potential is logical O ', which corresponds to the failure of communication link 4. After eliminating the failure, the potential of logical 1 .

Когда в обеих линиях связи 3 и 4 логическая '1', на выходе элемента И 13 15 также формируется сигнал логической 1', который поступает на единичный вход триггера 12 и переключает его в логическую *1. Сигнал логической 1 с выхода триггера 12 разблокирует прохож-го дение информационных сигналов между линиями связи 3 и 4, а устройство для передачи информанта между линиями связи приходит в свое исходное состояние.When the logical '1' in both communication lines 3 and 4, the logical 1 'signal is also generated at the output of the And 13 15 element, which is fed to the single input of trigger 12 and switches it to logical * 1. The logical signal 1 from the output of the trigger 12 unlocks the passage of information signals between communication lines 3 and 4, and the device for transmitting an informant between the communication lines comes to its original state.

В предложенном устройстве надежность 25 и достоверность передачи информации выше, чем у известных, так как отказ одной линии связи не приводит к отказу другой, устраняется возможность передачи между линиями связи логической информации, обусловленной упомянутым отказом. Увеличение надежности и достоверности передачи информации полезно, т.е. часть устройства вычислительного комплекса, подсоединенных к работоспособной линта связи при отказе другой линии связи продолжает нормальное функционирование, а сам вычислительный комплекс с некоторой потерей производительности продолжает обработку программ. Отказ линта связи в вычислительном комплексе с известным устройством для передачи информации вызывает отказ другой линии 5 связи, что может привести к отказу всего вычислительного комплекса. Останов вычислительного комплекса дня ремон. та приводит к уменьшению его средней производительности, следовательно, увеличивается стоимость обработки информации. Предлагаемое устройство позволяет частично устранить потери производительности и таким образом уменьшить стоимость обработки информации.In the proposed device, the reliability of 25 and the reliability of information transfer is higher than that of known ones, since a failure of one communication line does not lead to a failure of another, eliminates the possibility of transferring logical information between the communication lines due to the mentioned failure. Increasing the reliability and reliability of information transfer is useful, i.e. part of the device of the computing complex connected to a workable communication link when another communication line fails, continues normal operation, and the computing complex itself continues to process programs with some loss of performance. Failure of a communication link in a computer complex with a known device for transmitting information causes a failure of another communication line 5, which may lead to a failure of the entire computer complex. Stop computer complex repair day. This leads to a decrease in its average productivity, therefore, the cost of processing information increases. The proposed device allows to partially eliminate the loss of performance and thus reduce the cost of information processing.

Claims

(54) DEVICE FOR TRANSFERING INFORMATION BETWEEN COMMUNICATION LINES,. 1 The invention relates to communication technology, and can be used in discrete devices of automation and computer technology. According to the main author. St. No. 888167 A device is known comprising a first and second amplifiers, the outputs of which are connected to the communication lines with the inputs of the first and second elements, respectively, the first and second elements of AND-NOT, the outputs of which are connected respectively to the inputs of the first and second amplifiers, trigger, whose outputs are connected to the first inputs of the NAND elements, the output of the first element is NOT connected to the first trigger input and to the second input of the second NAND element, the output of the second element is NOT connected to the second inputs of the trigger and the first AND-NOT element ci: i. The disadvantage of this device is low reliability, since the failure of one communication line, for example, a short circuit to earth, which corresponds to the establishment of a logical O line, results in the failure of another line, since the logical O in lines is identified with the presence of information is transmitted by the device from one link to another. With the indicated failures, the reliability of information transmission decreases, since signal receivers receive fire (} signals. I The purpose of the invention is to increase the reliability and reliability of the device. The goal is to ensure that the discriminator is entered into the device for transmitting information between the communication lines, impulses, ep, element AND and element OR, whose inputs are connected to the outputs of the first AND second elements NOT, the output of the element OR through the discriminator of the pulse duration is connected to the zero input of the trigger, you one of which is connected to the third inputs of the NAND elements, the inputs of the AND element are connected to the communication lines and the output is connected to the single trigger input. The drawing shows the functional diagram of the device. The device contains the first and second amplifiers 1 and 2, the first and second lines links 3 and 4, the first and second elements are AND-NOT 5 and 6, the first and second elements are NOT 7 and 8, trigger 9, element OR 10, discriminator 11 of duration, pulse trigger 12, and element 13. To consider the operation of the device, The following is an explanation. Trunk amplifiers 1 and 2 have two states on output. In the first state, they have a low output impedance and close the 3 n 4 link to the ground, providing a logical O potential in these lines. In the second state, trunk amplifiers 1 and 2 have a high output impedance, which allows them not to affect the potential in trunk lines 3 and 4. At this time, trunk lines 3 and 4 using matching circuits (not shown) installed The potential is a logical 1, or a potential of a logical O, if any of the subscribers I work with this communication line transmits information. Since the trunk lines of communication work with subscribers in the time division mode, only one subscriber can work with lines at a given time. In the next interval, another subscriber is working, etc. Flip-flop 9 is RS flip-flop. Let it be a flip-flop, the first input of which is guided by input R, and the second, input - S. In the initial state with the trunk lines of connection 3 and 4, the subscribers do not work and in these lines the potential corresponding to logical 1 is set. The device works as follows. When a subscriber is working with a communication line, for example, 3, a logical O is established at the output of the NOT 7 element, and a logical 1 is formed at its output, which is fed to the input of trigger 9. The flip-flop 9 switches to logical O, its inverse output is formed by logical 1, which causes the switching element AND-NOT 6 to logical O. This logical O enters through the trunk amplifier 2 to the trunk link 4 to the subscribers of this line. Logically, O from the direct output of the trigger 9 enters the second input of the AND-NOT element 5 and blocks the passage of the logical i from the output of the HE element 8 through this element, the output of the AND-HE element 5 remains the logical level 1, and the trunk amplifier 1 remains in the state when its output impedance is large and it is actually disconnected from link 3. After the transmission of information is completed, the potential of logical 1 is established in trunk lines 3 and 4, the device returns to its original state. The trigger 9 remains in the state in which it was at the last transmission. If the next subscriber transmitting information is a subscriber of trunk line 3, then trigger 9 continues to remain in logical state O. The process of transmitting information from trunk line 4 to trunk line 3 is similar to that considered, except for the difference that trigger 9 is set to logical 1, and the information enters the communication line 3 through the element NOT 8, the element AND-NOT 5 and the trunk amplifier 1. If one of the communication lines 3 and 4 fails, as a result of which a logical O is established in the line, in a known device A logical O is also established in another line. The exchange of information on both lines of communication is terminated. In the proposed device, the failure of one of the lines, suppose that a short connection to earth in connection 4 does not lead to the failure of communication line 3. This is achieved as follows. The logical O in the communication line 4 leads to the formation of the output element NOT 8 logical 1, which enters through the element OR 10 to the input of the discriminator 11 of the pulse duration. If the pulse duration at the input of the discriminator 11 pulse duration exceeds the set value, for example, exceeds the time allowed for the subscriber to work with the communication line, the signal from the output of the pulse width detector 11 will set trigger 12 to logical O. The logic signal O from trigger output 12 will block Passing information signals through the elements AND-NOT 5 and 6 in the communication line 3 and 4. Thus, the false information from the communication line 4 to the communication line 3 is not received, and subscribers connected to the communication link 3 can continue amb her. normal function The same thing happens when a failure in the communication line 3, After the elimination of the failure, the device will automatically start up in the outgoing state. Suppose at the moment time in the communication line 3 potential logical 1, which corresponds to the initial state of communication line 3, and in communication line 4 potential logical O, which corresponds to the failure of the communication line 4. After the elimination of the failure in the communication line 4 establishes the potential of logical 1 When both links 3 and 4 are logical, the output of element I 13 also generates a logical 1 signal that goes to the single input of trigger 12 and switches it to logical 1. The logical signal from the output of trigger 12 unlocks the walk-through Information onnyh signals between communication lshpshmi 3 and 4, and device for transmitting information between the communication lines come to its original state ytt.e. In the proposed device, the reliability and reliability of information transmission is higher than that of the known ones, since the failure of one communication link does not lead to the failure of the other, the possibility of transferring logical information caused by the said failure is eliminated. Increasing the reliability and availability of information transfer is useful, i.e. A part of the computer complex device connected to a working communication line in case of failure of the other communication line continues its normal operation, and the computer complex itself continues to run programs with some loss of performance. Failure of the communication line in the computing complex with a known device for transmitting information causes a failure of another communication line, which may lead to failure of the entire computing complex. Shutting down a computer system for repair leads to a decrease in its average performance, therefore, the cost of processing information increases. The proposed device allows to partially eliminate the loss of productivity and thus reduce the cost of processing information. Claims of Invention A device for transmitting information between communication lines by aut. St. No. 888167, characterized in that, in order to increase the reliability of information and reliability of the device, the discriminator of pulse width, trigger, AND element and OR element, whose inputs are connected to the outputs of the first and second elements NOT, the element OR output through pulse duration discriminator are entered - owls are connected to the zero input of the trigger, the output of which is connected to the third inputs of the NAND elements, the inputs of the AND element are connected to the communication lines, and the output is connected to the single input of the trigger. Sources of information taken into account during the examination 1. USSR author's certificate N 888167, cl. Q O8 C 19/16, 03.21.80 (prototype).