SU879776A1 - Pulse distributor - Google Patents

Description

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This invention relates to the field of automation.

Known pulse distributors, containing in each channel trigger and three elements And 1.

The disadvantages of the known device are low reliability.

Closest to the proposed technical solution is a pulse distributor containing the OR element and in each channel the main trigger and three AND elements, the output of the first of which is connected to the zero input of the main trigger, the counting input of which is connected to the output of the second element AND, the first input of which connected to the control bus, with a single output of the main trigger connected to one of the third element BXoiJOB AND, the direct output of which is connected to one of the inputs of the OR element, the direct output of which is connected to the first th inputs of the first element AND 2.

The disadvantages of the known device are low reliability of operation.

The aim of the invention is to increase the reliability of the pulse distributor.

This goal is achieved due to the fact that an additional trigger is added to each channel of the pulse distributor, the single input of which is connected to the information bus, the zero input is connected to the reset bus, the counting input is connected to the output of the second element And, the zero output to the second input of the first element And,

10a, a single output is connected to one of the inputs of the third element I, the other inputs of which are connected to the inverse outputs of the third elements of the previous channels, and the direct output

15 is connected to the output bus, while the inverse output of the element OR is connected to the single inputs of the main triggers.

The drawing shows a functional pulse distributor circuit.

The device contains the element OR 1, the main trigger 2, the element And 3, the output of which is connected to zero

25 input main trigger 2, the counting input of which is connected to the output of the second element And 4, the first input of which is connected to the control bus 5, a single output of the main

30 trigger 2 is connected to one of

input elements of the third element AND 6, the direct output of which is connected to one of the inputs of the element OR 1, the direct output of which is connected to the first inputs of the elements AND 3, additional trigger 7, the single input of which is connected to the information bus 8, the zero input to the bus 9 reset, the counting input is connected to the output of the element And 4, zero output - to the second input of the element FROM, and a single output connected to one of the inputs of the element 6, the other inputs of which are connected to the inverse outputs of the elements And 6 previous channels, and the direct output connected off shi 10 th inverse output of OR

1: connected: to single trigger inputs 2.

The operation of the pulse distributor is carried out as follows.

When the power is turned on, the triggers 7 are set to the zero state by a pulse supplied to their zero inputs via the reset bus 9, and the triggers

2- to a single state by the signal from the inverse output of the element OR 1,

In the initial state, the enabling signals of the single outputs of the triggers 2 are available from the inputs of the And 6 elements. When a request signal appears, for example, on the information bus 8 of the second channel, the trigger 7 of this channel is set to one, and from its single output, the enabling signal goes to the input of the corresponding element And 6, And 6 goes to the state where the signal the ban from the inverse output will close the AND 6 elements of the subsequent channels, and a single signal from the direct output of the element AND b will enter the input of the element OR 1. The signal from the direct output of the element OR 1 through the elements 3 will be reset to the zero state triggers 2 all channels except the second, since the other inputs of the And 3 elements receive the enabling signals from the zero outputs of the flip-flops 7 of all the channels except the second. The inhibit signals from the single outputs of the flip-flops 2 will block the corresponding elements For the purpose of eliminating the influence of the query signals that appeared after the start of the request processing cycle. Inquiries received after the start of the run 0 cycle are remembered on the triggers 7 and processed in the next cycle. Thus, the newly received request signals in any channel, in particular in a channel with a higher priority, will not be able to interrupt the operation of the channel that started transmitting information, i.e. the possibility of false positives is excluded. A single signal from the direct output of the second channel element b and b is fed to the corresponding output bus 10. When the information is received, the pulse coming through the control bus 5 through the open element 4 of the second channel resets the trigger 7 of this channel at the counting input, preparing it to receive the next request, and also flushes the corresponding trigger 2 to block the new request on the information bus 8 of the second channel in order to eliminate its processing again in the same cycle, which, in turn, also excludes the occurrence of false positives. After resetting the triggers 2 and 7, a single signal disappears at the direct output of the And 6 element of the second channel. At the inverse output of the element OR 1, a single signal appears, which translates all the triggers 2 into one state by preparing the pulse distributor for the next processing cycle.

Thus, by introducing an additional trigger into the channel of the pulse distributor, its reliability is improved compared to the prototype.

Claims (2)

1. USSR author's certificate number 483786, cl. H 03 K 17 / 00.15.06.73. 2. USSR author's certificate number 581598, cl. H 03 K 17 / 62,25.08.75 (prototype).