SU1210208A1 - Device for generating pulse sequences - Google Patents

Abstract

The invention can be used in automation, computing and in control systems of digital electronic circuits. The device contains 1 counting generator, pulses, switch 2, element 4 AND, frequency divider 5, trigger 6, start bus 7 and input bus 8. Generator 1 is made according to the symmetric multivibrator circuit with time master circuits. The introduction of software block 3 into the device made it possible to increase the reliability of its functioning and expand the functional areas. 1 il. (C

Description

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The invention relates to a pulse technique and can be used in automation., Computing, in systems of counter digital electronic circuits.

The purpose of the invention is to increase the reliability of the device and expand its functionality.

The drawing shows the functional diagram of the device for the formation of pulse sequences ™.

The device contains a generator of J counting pulses, switch 2, program block 3, element 4, -, frequency divider 5, trigger 6p bus 7 sanycKaj output bus 8, with the switch outputs connected to. the inputs of the generator 1 counting owls, the output of which is connected to the first input of the element I 4, the output of which is connected to the counting input of the frequency divider 5; the setup input of which is connected to the trigger input of the heshetor 1 of the counting pulses and to the start bus 7, the trigger input 6, the first group of outputs of the software block 3 is connected to the inputs of the switch 2, the second group of outputs of the software block 3 is connected to the inputs of the presetting of the division factor of the frequency divider 5, the output of the software block ka 3 is connected to the second input of the I 4 element, and the counting input of the program block 3 is connected to the output of the frequency divider 5, the installation input of the program block 3 is connected to the start bus 7 and to the setup input of the trigger 6. The generator 1 is designed according to the metric mv-vibrator and with time, master chains.

The device works as follows.

Let it be necessary to form an impulse sequence consisting of a series of impulses with pa ;; personal pulse durations and interpulse intervals (pauses),

In the initial state, the potential of the logical unit is applied to the device via the start bus 7, according to which the generator 1 of the counting pulses is inhibited, the trigger 6 is set to the zero state, the program block 3 is set to the initial state.

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In the first group of inputs with nporpahf- a lot of block 3, the switch 2 receives the code by which the switch

2 connects to the generator 1 the first 5 times the defining chain, the second

group of outputs on the frequency divider 5 receives the code by which the corresponding division factor is set in frequency divider 5, 10 To the element 4 of the program block

3provides the potential of a logical unit,,

In program block 3, the Program is recorded in the form of code combinations,

15 corresponding to the numbers of the time of the setting chains of the generator 1 and the division factors of the 5 frequency divider. As soon as the launch spike 7, the device receives a start signal

20 as the removal of a logical unit, generator 1 begins to generate pulses with a frequency determined by the timing chain connected to it. Impulses come on

25 clock input (frequency divider 5, the signal at the output of which appears with a delay due to the divide-division factor set.

30 p

On the leading edge of the pulse with

, the output of the divisor 5 trigger 6 is set to in, the cynical state. On the falling edge of this pulse, at the outputs of the first and second groups of the pro35 gram block 3, the following code combination is established, which is necessary to form the duration of the first pulse of the sequence. According to this

 code combination switches 2 connects to the generator 1. the corresponding time of the master circuit, and the division factor of the divider 5 changes, the output of which produces a pulse with a delay equal to the duration of the pulse being formed. On the leading edge of the pulse from the output of the divider 5, the trigger 6 is set to zero.

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state, and on the falling edge

at the outputs of the first and second groups of program block 3, a code combination is established, necessary for generating a pause, 55 At the same time, the required back-up time is connected to generator 1, and the required division factor of divider 5 is set,

31

After generating a pulse, the number of which is entered into program block 3, the potential of logical zero arrives at the second input of element 4 from program block 3, and the formation of the first series of pulses of the pulse sequence stops. The interval time until the beginning of the next series is determined by the program recorded in program block 3.

Claims (1)

Formula Device | dp formation of pulse sequences, contents. A switching switch, the outputs of which are connected to the inputs of the generator of counting pulses, the output of which is connected to the first input of the element I, the output of which is connected to the counting input of the frequency dividers, is installed. N.Yazola Editor .Compiler V.Chizhov Tehred T.Tulik Proofreader V.Sinitska 531 / 59Tira; w 818Subscription VNIIPI USSR State Committee for inventions and discoveries I3035, Moscow, Zh-35, Raushsk nab., 4/5 Branch PPP Patent, Uzhgorod, st. Project, 4 eight whose input is connected to the starting input of the generator of counting pulses and to the start bus, the output of the frequency divider is connected to the counting: input trigger, characterized in that, in order to increase the reliability of the operation of the device and enhance its functionality, a software the unit, the first group of outputs of which is connected to the inputs of the switch, the second group of outputs of the program block is connected to the inputs of the frequency divider division presetting, the output of the graph-block is connected to the second input of the And element, and the counting input of the program block is connected entrance prr- gram block is connected to the launch bus and to the installation input of the trigger.