SU1755366A1 - Pulse sequence generator - Google Patents

Abstract

The invention is intended to simplify and extend the functionality of a pulse train generator. The purpose of the invention is achieved by introducing into the device the first 5 and second 6 OR elements and new functional connections. In addition, the device contains a pulse generator 1, a counter 2, a decoder 3, a program setting block 4 and a trigger 7. The simplification of the device is achieved by working out the same set of elements or the pulse duration and pause duration. Expansion of functionality is achieved due to the possibility of setting different values of pulse durations and pauses between them during one cycle of operation of the device. 2 Il.

Description

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The invention relates to a pulse technique and can be used as a generator for controlling digital automatics.

The aim of the invention is to enhance the functionality and simplify the pulse train generator.

Figure 1 shows the block diagram of the device; Fig. 2 is a functional diagram of one of the possible variants of the program setting block.

The device contains (Fig. 1) a pulse generator 1, a counter 2, a decoder 3, a program setting block 4, the first element OR 5, a second element PI 6 and a trigger 7 The output of the pulse generator 1 is connected to the counting input of the counter 2, the outputs of the counter 2 are connected with the inputs of the decoder 3, the outputs of which are connected to the inputs of the program setting unit 4, the first group of outputs of which is connected to the inputs of the first element OR 5, and the second group of outputs - with the inputs of the second element OR 6, the output of the first element IL AND 5 is connected to S-in - do trigger 7, the output of the second element OR 6 that is connected to the R-input of flip-flop 7, R-input of the counter 2 is connected to the reset output Bloch 4 ka specifying program, and the output of the whole device is the direct output of flip-flop 7

The program setting unit 4 (FIG. 2) contains the first 8 1-8.N, the second 9.1-9 N and the third 10.1-10.N groups of switching elements, in each of which the first inputs of the switching elements are connected to the outputs of the decoder 3. The second inputs the first 9.1-9.N and the second 10.1-10.N groups of switching elements form the first and second groups of outputs of the block and the program set, respectively, and the second inputs of the third group 10.1-10 of N switching elements are combined and form the reset output of block 4 of the program settings.

The device works as follows.

In the initial state, the counter 2 is in the zero state, and the trigger 7 and the state, if necessary, it can be in the zero state. The program setting block 4 sets the duration of the pulses and pauses between them. When pulses are received from the output of the pulse generator 1 to the counting input of the counter 2, the code begins to change at its output. As the counter 2 code reaches equality to the numbers set in block 4 of the program's task from the corresponding output of the decoder 3 through the next closed contact (Fig. 2) of block 4, the signal will go either to the input of the element OR 5, or to the input of the element OR 6. Signals from the output of it from the indicated elements, arriving respectively at the S input of the trigger 7 or at its R input, changes its previous state (from one to zero, or vice versa). In this case, the forward output of the trigger 7 (the signal comes from the output of the element OR 6) is set to zero, i.e. A pause between pulses is formed, the duration of which is determined by the moment of arrival of the next signal from the output of the element OR 5, which translates trigger 7 into one state. Then, at the forward output of the trigger 7, a pulse is formed, the duration of which will now be determined by the moment of arrival of the next signal from the output of the OR 6 element.

Then, as the S-inputs of the trigger 7 pulse from the outputs of the elements OR 6 and 5, respectively, arrive at the R-l S, the pulses and pauses alternate at the output of the trigger 7, the duration of which is determined by the state of the switching elements 8.1-8.N and 9 , 1- 9.N block 4 tasks of the program.

When the output pulse of the decoder 3 appears at the first input of one of the closed switching elements from the group of switching elements 10.1-10.N, the counter 2 is reset to the initial state by the output pulse of the program setting unit 4 and the operation cycle of the device is repeated.

A positive effect in the generator of a sequence of pulses is achieved by simplifying the design and expanding its functionality due to the possibility of practicing a sequence of pulses and pauses differing in duration during the operation cycle of the device.

Claims (1)

Invention Formula A pulse sequence generator comprising a pulse generator, a counter, a decoder, a program setting unit and a trigger, the outputs of the meter are connected to the inputs of the decoder, the outputs of which are connected to the inputs of the program setting unit, characterized in that, in order to simplify and extend the functionality the first and second elements OR are entered, the outputs of which are connected respectively to the S-input and R-input of the trigger, the output of the pulse generator is connected to the counting input of the counter, whose R-input is connected to the output meat block specifying program, the first and second groups of which are respectively connected to the inputs of first and second outputs of OR fig 2