SU760071A1 - Information input arrangement - Google Patents

Description

The invention relates to the field of automation and computing and is intended to enter information.

A device for entering information, containing triggers, elements And, control triggers, inverters, delay line [1] ·

The disadvantage of this device is the low reliability of the input information.

The closest technical solution to the invention is a device for entering information containing serially connected first counter, decoder, switching elements. And a pulse shaper, the first element And the output of which is connected to the input of the first counter, the second, third and fourth elements And two triggers [ 2].

The disadvantage of this device is the low accuracy of the input information. ·,

The purpose of the invention is to increase the reliability of the input information.

This goal is achieved by the fact that the device contains a second counter, the first

2

the input of which is connected to the output of the second element And, the first output to the first input of the third element And, the second output to the first input of the fourth element And, the second input of which is connected to the second

₅ input of the third element And, the output of the pulse shaper and the first input of the first trigger, the third input with the third input of the third element And, the output of the first trigger and the first input of the second element And, the second input of which is connected

Yu to the first input of the first element And the second input connected to the output of the second trigger, the first input of which is connected to the output of the pulse shaper, the second input to the second input of the first trigger and the second input of the second counter, the third ⁵ input to the output of the third element I.

The block diagram of the device shown in the drawing.

The device contains the first counter 1,

20 decoder 2, switching elements 3, shaper 4 pulses, the first trigger 5, the second element And 6, the first element And 7, the second trigger 8, the third element And 9, the fourth element And 10, the second counter 11.

760071

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The device works as follows.

In the initial state, all switching elements 3 are turned off, and when the initial setup signal is applied to the input of the second trigger 8, the latter allows the first pulse 1 to pass through the first element 7 to the input of the first counter 1. From the outputs of counter 1, information arrives at the inputs of the decoder 2

At the outputs of the decoder 2, polling pulses of the corresponding switching elements 3 are sequentially generated. The first trigger 5 by its output prohibits the passage of clock pulses through the second element 6 to the counting input of the second counter 11 and thereby excludes the formation of signals “switching element on” and double activation. The outputs of the counter 11 are also formed prohibitive potentials. When any switching element 3 is triggered during the coincidence of the state of the first counter 1 with the code of the triggered switching element, the signal from the corresponding output of the decoder 2 passes through the triggered switching element to the input of the pulse shaper 4.

The pulse from the first output of the shaper 4 is set in one state, the first trigger 5, which allows the passage of clock pulses through the second element And 6 to the counting input of the second counter 11 pulses. Subsequent clock pulses synchronously begin to arrive at the counting inputs of both counters 1 and 11, and the first of them receives a signal from the input of the shaper 4 pulses, as counter 1 changes its state and at the second output of the shaper 4 a pulse is generated that confirms the initial state of the second trigger 8 .

The module ^ recalculation of the counter 11 pulses is greater than the moufle of the recalculation of the counter 1. If only one switching element has worked, the reactive element will re-detect after the counters 1 and 11 have been applied to the counting inputs equal to the counter recalculation module 1. At this moment the signal from the corresponding output again decoder 2 through the triggered switching element is fed to the input of the driver 4 pulses. The latter generates a pulse at the first output, which is fed to the inputs of elements 9 and 10. Since the counter G1 of pulses has passed into a state greater than the module of recalculation of counter 1, then at its first output that arrives at the input of element 9, a resolution signal is generated and thus, at the output of the element And 9 form4

The “switching element on” signal is triggered, with which trigger 8 is reset, prohibiting the passage of clock pulses to the counting input of counter 1. At the same time, a code combination of the triggered switching element is generated at the counter outputs.

In case of switching on several switching elements 3, the repeated detection of the activated switching element will occur when the number of clock cycles is less than the counter 1 recalculation module, the second output of meter 11 will be the resolving potential by the time of the signal at the first output of the driver 4 pulses. In this case, the output of the element And 10 receives the signal "double inclusion", indicating an error. The device returns to its original state by giving a signal of the initial installation.

Claims (1)

Claim A device for inputting information, containing in series the first counter, the decoder, the switching elements and the pulse shaper, the first And element, the output of which is connected to the input of the first counter, the second, third and fourth And elements, two triggers, characterized in that the reliability of the input information, it contains the second counter, the first input of which is connected to the output of the second element I, the first output - to the first input of the third element X, the second output - to the first input of the fourth element I, second whose entrance is connected to the second input of the third element I, the output of the pulse shaper and the first input of the first trigger, the third input to the third input of the third element And, the output of the first trigger and the first input of the second element And, the second input of which is connected to the first input of the first element And whose second input is connected to the output of the second trigger, the first input of which is connected to the output of the pulse shaper, the second input to the second input of the first trigger and the second input of the second counter, the third input to the output third its element. AND.