SU957451A1

SU957451A1 - Three-channel reserved device

Info

Publication number: SU957451A1
Application number: SU813232115A
Authority: SU
Inventors: Игорь Иванович Клепиков; Алексей Михайлович Машкин
Original assignee: Предприятие П/Я В-2969
Priority date: 1981-01-08
Filing date: 1981-01-08
Publication date: 1982-09-07

Description

Изобретение относитс к вычислительной технике и может быть использовано при проектировании резервированных устройств.The invention relates to computing and can be used in the design of redundant devices.

Известно резервированное устройстгво , соДержащее в каждом канале резервируе1Ж1й блок, выход которого соединен с сигнальными входами мажоритарных элементов, управл ющие входы которых соединены с шиной управле- НИН 1 A redundant device is known that contains in each channel a redundancy block, the output of which is connected to the signal inputs of the majority elements, the control inputs of which are connected to the control bus NIN 1

Однако устройс:тв6 не обеспечивает перехода от посто нного резервировани к резервированию замещением, так как при сн тии питани с двух из трех каналов не будет функционировать мажоритарный элемент третьего канала, то есть и весь канал в целом . .However, the device: TV6 does not provide a transition from a permanent reservation to a reservation by substitution, since removing power from two of the three channels will not allow the majority element of the third channel, that is, the entire channel as a whole. .

Наиболее близким к предлагаемому по технической сущности и достигаемому результату вл етс трехканальное резервированное устройство, содержащее в каждом канале резервируемые блоки, выходы которых соединены с входами соответствующих мажоритарных элементов, выходы которых через элементы НЕ соединены с соответствуквдими входами мажоритарных элементов последующих каналов (|2 .The closest to the proposed technical essence and the achieved result is a three-channel redundant device containing redundant blocks in each channel, the outputs of which are connected to the inputs of the respective major elements, whose outputs through the elements are NOT connected to the corresponding inputs of the majority elements of the subsequent channels (| 2.

Недостатком устройства вл етсь недостаточна надежность, так как при отказе резервируемого блока одного канала и одного из мажоритарных элементов или элемента НЕ другого канала выходна инфорк аци пропадает на двух или даже трех выходах устройства, что в режиме посто нного резервировани приводит к от10 казу всего устройства в целом. Кроме того, при отказе одного из резервируекых блоков информации на выходах устройства по вл етс с дополнительным временным рассогласованием, The drawback of the device is insufficient reliability, since if a redundant block of one channel fails and one of the major elements or a NOT element of another channel, the output information disappears on two or even three outputs of the device, which in the continuous backup mode leads to whole In addition, if one of the reserved information blocks fails, the device’s outputs appear with an additional time error,

15 так как она восстанавливаетс на выходах устройства последовательно из канала в канал.15 since it is restored at the outputs of the device in series from channel to channel.

Цель изобретени - повышение надежности устройств и расширение The purpose of the invention is to increase the reliability of devices and the expansion

20 области применени , в частности за счет выдачи информации на три выхода устройства с меньшим временным рассогласованием при отказе одного из резервируеьшх блоков.20 fields of application, in particular, by issuing information on three outputs of the device with a smaller temporal mismatch in case of failure of one of the reserved blocks.

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Поставленна цель достигаетс тем, что в трехканальное резервированное устройство, содержащее в каждом каНсше резервируемые блоки, выходы ког торых соединены с соответствующими The goal is achieved by the fact that in a three-channel redundant device, containing in each of our reserved blocks, the outputs of which are connected to the corresponding

Claims

30 inputs of the majority elements, the other inputs of which are connected to the outputs of the first :: NOT elements, are inserted into each channel the second element NOT, the input of which is connected to the output of the reserved block of the corresponding channel, and the output to the input of the first element of the next channel NOT. The drawing shows a block diagram of a redundant device. A three-channel redundant device consists of three redundant channels 1, each of which contains a redundant unit 2 connected to the corresponding inputs of the majority elements- 3 cb answers-. of the primary and subsequent channels, another input of the major element 3 is connected to the output of the first element NOT 4. The input of the second element NOT 5 is connected to the output of the reserved block 2 - the corresponding channel, and the output is connected to the input of the first element 4 of the subsequent channel. The three-channel redundant device works as follows. In the permanent reservation mode, power is supplied to all backup channels, and each major element 3 provides information at its output from the outputs of the three redundant units 2. When switching to redundancy by replacement, the power is reset. Only one of the backup channels 1. At the same time, the inputs of the major element 3 of the switched on channel connected to the switched off channels are set to the value of logical O on one and logical 1 on the other, and the information of the reserved channel 2 of the corresponding channel passes through the majority element 3. Thus, when the device is operating in the redundancy mode, the output state of the major element 3 of the switched on backup channel 1 is determined only by information from the output of the reserved block 2 of the corresponding channel, which will allow checking the backup channels 1 kg separately. In addition, the setup and testing of a single channel of the device is greatly simplified; as these works can be performed in the absence of two other channels. Introducing the second element NOT into the proposed Three-Channel Redundant device improves the reliability of operation, since in the permanent backup mode with different failures in two backup channels, the correct output information is saved to two of the three device outputs. In addition, in the device when one of the reserved blocks fails, there is no additional temporal mismatch in the information on its outputs, which expands its scope in comparison with the known one. Claims of the invention A three-channel redundant device containing redundant blocks in each channel, the outputs of which are connected to the corresponding inputs of the majority elements, the other inputs of which are connected to the outputs of the first elements NO, so that reliability, and expanding the field of application of the device, the second element is NOT introduced into it into each channel, the input of which is connected to the output of the reserved block of the corresponding channel, and the output to the input of the first element NOT the subsequent channel but. Sources of information taken into account during the examination 1. USSR author's certificate 476565, cl. G About F 11/18, 1973.

2. Authors certificate of the USSR 566247, cl. 06 F 11/18, 1975 (prototype).