SU938425A1

SU938425A1 - Redundancy generator

Info

Publication number: SU938425A1
Application number: SU803001893A
Authority: SU
Inventors: Владимир Иванович Горячев; Владимир Михайлович Шелоков
Original assignee: Организация П/Я В-8466
Priority date: 1980-11-12
Filing date: 1980-11-12
Publication date: 1982-06-23

Description

Изобретение относитс к импульсной технике и может примен тьс в цифровой, технике, автоматике и других област х.The invention relates to a pulse technique and can be applied in digital, engineering, automation, and other fields.

Известен резервированный генератор импульсов, содержащий два генератора импульсов, два интегрирующих каскада, источник питани и два ключа . Выход второго иитегрирукадего каскада соединен с выходом второго генератора Импульсов, управл ющие входы ключей соединены с выходами интегрирующих каскадов, а выходы первого и второго ключей включены соответственно между источником питатани и шиной питани второго и первого генераторов импульсов Ц.A redundant pulse generator is known, comprising two pulse generators, two integrating stages, a power source and two switches. The output of the second stage of the cascade is connected to the output of the second pulse generator, the control inputs of the keys are connected to the outputs of the integrating stages, and the outputs of the first and second keys are respectively connected between the power supply and the power bus of the second and first pulse generators D.

Недостатком такого генератора вл етс наличие в его составе двух интеграторов, которые существенно затрудн ют изготовление схемы генератора в интегральном исполнении и тем самым снижают его надежность. Последнее объ сн етс тем, что интеграторы выполн ютс с применением диодов, резисторов, емкостей, нсминалы которых завис т от частоты, а иногда и трансформаторов. Нгшичие столь разнотипных элементов невыгодно в том случае, когда собственноThe disadvantage of such a generator is the presence in its composition of two integrators, which significantly impede the manufacture of an integrated circuit of the generator and thereby reduce its reliability. The latter is explained by the fact that integrators are made using diodes, resistors, capacitances, terminals which depend on frequency, and sometimes transformers. Ngshichie such diverse elements unprofitable in the case when the actual

генератор выполн етс на логических схемах, поскольку в этом случае су1пественно ухудшаетс технологиче ность выполнени генератора и . снижаетс его надежность.the generator is executed on logic circuits, since in this case the performance of the generator and is significantly degraded. its reliability decreases.

Наиболее близким к изобретению по технической сущности вл етс The closest to the invention to the technical essence is

.Q резервированный генератор. Генератор содержит триггер, элемент И-ИЛИ-НЕ, основной и резервный генераторы, формирователь выделени фронта и счетчик, причем единичный и нулевой выходы счетчика подключены соответственно к вторым входам вентилеА И эп&л&нга И-ИЛИ-НЕ, а выход формировател выделени фронта подключен к ВХОДУ сброса счетчика 2..Q redundant generator. The generator contains a trigger, an AND-OR-NOT element, a primary and backup generators, a frontalization driver and a counter, the unit and zero counter outputs being connected to the second valve inputs AND AND & N, respectively, and the output of the selection generator front is connected to the INPUT reset counter 2.

Недостатком известного генератора The disadvantage of the known generator

20 вл етс низка надежность, так как он не исправл ет р д сбойных ситуаций . К числу таких ситуаций можно отнести одновременное по вление двух нулей или двух единиц на выходах20 is poor in reliability since it does not correct a number of failures. These situations include the simultaneous occurrence of two zeros or two ones at the outputs.

25 триггера или счетчика, увеличение частоты одного из генераторов.25 trigger or counter, increasing the frequency of one of the generators.

Claims

In all the above cases, the generator will either stop issuing 1z-1pulses or the frequency of the generated signals will differ from the original. In both cases, the circuit becomes inoperative. The purpose of the invention is to increase the NAD 5LCOST. The goal is achieved by teM; that the redundant generator, containing the main and backup generators, the AND-OR-NOT element, the counter, the frontalization driver of which the output is connected to the counter reset input and trigger.per, an additional generator, two elements 3 OR-NOT, three elements 2 OR element 2 And, two elements 2 OR, the second and third shapers in the Front section and the second counter. The output of the main generator is connected to the first input of the first element 3 OR-NOT, to the first input the third P of element 2 OR-NOT and to the first input of the fourth valve and the element AND-OR-N The output of the backup generator is connected to the first input of the second element 3 OR- NOT to the reset input of the second meter. The output of the first element 3 is OR-NOT connected to the first input of the first valve AND element. AND-OR- and to the first driver of the front selection, and the output of the second element .3 OR-NOT connected to the first input of the second valve AND element AND-OR-NOT and the first input of the first element 2 OR-NOT, the second input of which is connected to the single output of the first counter, to the first inputs of the second element 2 OR-NOT and element 2 AND to the input of the second front-end generator, and the output of the first element 2 OR- NOT connected to the counting input of the first counter. The outputs of the second element 2 OR-NOT and element 2 are connected to the input of the first element 2 OR, the output of which is connected to the second inputs of the first and second elements 3 OR-NOT and to the second input of the fourth valve AND element AND-OR-NOT. In this case, the second inputs of element 2 AND and the second element 2 OR are NOT connected to the zero output of the first counter, and the output of the second edge pickup is connected to the first input of the second OR element 2, the output of which is connected to the trigger setup input, the output of which is connected to the third inputs of the elements 3 OR-NOT, to the second input of the third valve AND the element AND-OR-NOT to the lock input of the additional generator, the output of which is connected to the first input of the third valve AND the element AND-OR-NOT. The second input of the second element 2 OR is connected to the output of the third driver of the front, the input of which is connected to the unit output of the second counter and to the second input of the third element 2 OR-NOT whose output is connected to the counting input of the second counter. The drawing shows a diagram of a redundant generator. The device contains the main generator 1, a backup generator 2 and an additional generator 3, the elements of OR-NOT 3-5 shapers 6-8, the selection of the front, counters "9 and 10, elements 2 OR-NOT-13, element 2 and 14 , elements 2 OR 15, 16 trigger 17 and element AND-OR-Ny 18. The output of the main generator 1 is connected to the first input of the first element 3 ILY-NO 4 to the first input of the third element 2 OR-NOT 13 and to the first input of the fourth AND gate element AND-OR-NOT 18. The output of the backup generator is connected to the first input of the second element 3 OR-NOT 5 and to the input of the installation to zero of the second counter 10. The output of the first element 3 OR-NOT 4 is connected to the first driver 6 at the front and to the first input of the first valve AND element AND-OR-NOT 18, and the output of the second element 3 OR-NOT 5 connected to the first input of the second valve AND element AND-OR-NOT 18 and to the first input of the first element 2 OR-NOT 11, the second input of which is connected to the single input of the counter 9, to the first inputs of the second element 2 OR-NOT 12 and element 2 AND 14, to the second input of the valve AND element AND-OR-NOT 18 and to the entrance of the second shaper 7 selection of the front. The output of the first element 2 OR-NOT 11 is connected to the counting input of the counter 9. The outputs of the second element 2 OR-NOT 12 and the element. 2 and 14 are connected to the inputs of the first element 2 OR 15, the output of which is connected to the second inputs of the first and second elements 3 OR-NOT 4.5 and to the second input of the fourth valve AND AND-OR-NOT 18, while the second inputs element 2 and 14 and the second element 2 OR-NOT 12 are connected to the zero output of counter 9 and to the second input of the first valve AND AND-OR-NOT element 18. The output of the second front-side driver 7 is connected to the first input of the second element 2 OR 16 whose gateway is connected to the trigger setup input 17. A single trigger output 17 connects leH to the third inputs of elements 3 OR-NOT 4 and 5, to the second input of the third valve AND element AND-OR-NOT 18 and to the lock input of the auxiliary generator 3, the output of which is connected to the first input of the third valve AND electr AND-OR-NOT 18. The second input of the second element 2 OR 16. connected to the output of the third imaging unit 8 of the front, the input of which is connected to the single output of the third counter and to the second input of the third element 2 OR-NOT 13, the output of which is connected to the counting input of the second counter 10. The generator works as follows. In the initial state, the trigger 17 and the counters 9, 10 are in the zero state (preliminarily at the input of the Setup Setup are installed when the power is turned on), as a result of which the generator 3 is blocked, i.e. at its output level zero. During the operation of generators 1 and 2, signals are formed at the output of the imaging unit 6 which zero the counter 9. If the counter 9 is working normally, i.e. at its outputs, the levels zero and one respectively act, then at the output of element 2 of LSHI 15, the level zero and signals from the main generator 1 through the first AND gate of the AND-OR-NOT 18 element are passed to the output. At the same time, all the other AND-OR-HE 18 valves will be closed by signals with a logic level coming from the outputs of element 2 OR 15, trigger 17 and the output of counter 9. When they fail, for example, generator 1 at zero reset the counter 9 will operate the zero level and the counter 9 from generator 2 through the element 2 OR NOT 11 will be set to the state of units. In this case, the first gate of the AND-OR-NOT 18 element will be closed, but the second valve of the same element will open, and the frequency from the output of the backup generator 1 will be output. When generator 2 fails, counter 9 will not be able to switch to the state of one, and the circuit will operate from the main generator 1. Consider a faulty situation in which counter 9 will for some reason be set to the same state on both outputs. In this case, the output of the valve 2 OR-NOT 1 is on the Wits unit level, the elements 3 OR-NOT 4.5 will be blocked (the level zero at their outputs), and the circuit will work from the generator 1 through the fourth valve AND of the I-ШШ- NOT 18. Consider the case of oscillator frequency loss 1

2. Suppose that generator 2 began to work at higher frequencies, i.e. its frequency is more than. Frequently 2 times the main generator 1. In this case, the counter 9 switches to the state of unity, since the zeroing pulses will arrive much the same compared to the frequency of the signals at the counting input. However, since the generator I will continue to work, it will forcibly reset the counter 9, i.e. a zero signal is set at its output. When the counter transitions from the state of the uni to the state of zero, a signal is generated at the output of the frontalizing generator 7, which will set the trigger 17 to the state of one. As a result, the generator 3 is unlocked and the generator 3 frequency is transmitted through the third valve AND AND-OR-NOT 18 element to the output. As the frequency of generator 1 increases (generator 2 operates normally), a counter 10 will turn out to be in a situation similar to counter 9. As a result, the front-edge generator 7 is triggered. The state of the unit, the trigger 17, and the circuit as a whole function from the generator

3. In both cases, generator failure was considered leading to an increase in frequency. However, the circuit will function reliably even if the frequency of one of the oscillators decreases more than two times relative to the original one. The latter is explained by the fact that for this circuit there is no difference whether, for example, the frequency of generator 2 increases, and generator 1 will work normally, or vice versa, generator 2 will work normally, and frequency of generator 1 will decrease. Thus, the failure of any element of the circuit (except element 18, which can be reserved), including a failure like a generator frequency drift, does not lead to a failure of the circuit as a whole, which indicates its high reliable-: ti. Claims of the invention A redundant generator containing a main and a backup generator, a trigger, a counter, a front slot generator and an AND-OR-NOT element, the single and zero outputs of the counter being connected to the second inputs of the first and second valves AND AND-AND-NOT elements, respectively and the front driver output is connected to a counter reset input, characterized in that, in order to increase reliability, an additional generator, two elements 3 OR-NOT, three elements 2 OR-NOT, element 2-AND, two elements 2 OR are introduced into it , sec th and the third edge allocation drivers and the second counter, with the output of the main generator connected to the first input of the first element 3 of the IPN-NOT, to the first input of the third element 2 1SHI-NOT and to the first input of the fourth valve AND of the element IL-ILINE, the output of the backup generator is connected to the first input of the second element 3 OR-NOT to the reset input of the second counter, while the output of the first element 3 OR-NOT is connected to the first input of the first valve and the AND-OR-NOT element and to the first front eviction unit, and the second element 3 OR NOT connect to the first input of the second valve AND of the AND-OR-NOT element and to the first input of the first) element 2 OR-NOT, the second input of which is connected to the single output of the first counter, to the first inputs of the second element 2 OR-NOT and element 2 AND to the input of the second front-edge driver, and the output of the first element 2 OR is NOT connected to the counting input of the first counter, the outputs of the second element 2 OR-NOT and element 2 AND are connected to the input of the first element 2 OR, the output of which is connected to the second inputs of the first and the second element 3 OR-Nyo and to the second entrance the fourth on the AND-OR-NOT valve AND, while the BTopEie inputs of element 2 and the second element 2 OR are NOT connected to the zero meter of the counter, and the output of the second front-edge driver is connected to the first input of the second element 2 OR whose output is connected to the input installation trigger, the output of which is connected to the third inputs of the cells 3 OR NOT, to the second input of the third valve AND element. AND-OR-NOT, to the input of blocking an additional generator, the test of which is connected to the first input of the third valve and the element AND-OR-NOT, while the second input of the second element 2 OR is connected to the output of the third driver in the front {input of which is connected to unit output of the second counter and to the second input of the third element 2 OR NOT, the output of which is connected to the counting input of the second counter. Sources of information taken into account during the examination 1. USSR author's certificate 531312, cl. H 05 K 10/00, 1974. 2, USSR Copyright Certificate No. 2839518 / 18-21, Cl. H 05 K 10/00, 1979,