SU1359891A1 - Generator of random time intervals - Google Patents

Abstract

The invention can be used in a pulsed radio and computing technology. The generator (G) of random time intervals contains G1 noise, a 2-level quantizer, a decoder 3, a code fixing unit 4, specifying a GB, a shift register 5, T7 clock pulses. The invention improves the parameters of a generated sequence of random time intervals by independently adjusting the time parameters of the intervals. 2 Il. (L with SP from 00 with Figure /

Description

The invention relates to a pulse technique and can be used in radio engineering and power engineering.

The aim of the invention is to improve the parameters of the generated sequence of random time ps intervals by independently adjusting the time parameters of the intervals.

Pa figs. 1 shows a functional diagram of a generator of random time intervals; in fig. 2 - time diagrams-®. his works.

The slaughter time interval generator (Fig. 1) contains a series-connected noise generator 1 and a quantizer of 2 levels, the outputs of which are connected to the inputs of the second group of inputs of the decoder 3, the outputs of which are connected to the corresponding inputs of the first 4 blocks of the code and with the inputs installation of the corresponding bits of the shift register 5, the master oscillator b, the generator 7 clock pulses, the output of which is connected to the synchronization input of the shift register 5, the outputs of the corresponding bits of which are connected to The corresponding inputs of the second group of inputs of the block 4 fixing the code, the outputs of which are connected to the corresponding inputs of the first group of inputs of the decoder 3, the control input — which is connected to the master driver 6, the Register 5 contains the trigger 8.1-8, N, the decoder 3 - And 9.1 elements -9, N-1 and 10, 1-10. Н ,, blo 4 - diodes 11.1-11. N-1 and 12.1-12.N

The generator of random time intervals works as follows.

Low-frequency noise from the noise generator 1 code (Fig. 2a) with adjustable output power is fed to the input of the quantizer 2 levels, the signals (Fig. 26, c, d) from the outputs of which are fed to the corresponding inputs of the second group of inputs of the decoder 3, the signal on one of the outputs of which (in figs, 2d, e, g) appear at the moments of gating the decoder 3 by a signal from the output of the master oscillator b (fig, 2h, where T is the follow up period and the output from the master oscillator 6). This signal from the output of the decoder 3 post

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It loops simultaneously to the inputs of block 4 of code fixing and shift register 5, information to the last of which comes in the form of binary Y - bit number, shifting which (fig. 2k, l, m) in shift register 5 is carried out at the output of generator 7 clock pulses (Fig. 2i). The output time of information to the device outputs, for example, to the EKODODs of the trigger 8.1.register of the 5th shift, is determined by which of the bits of the latter the unit was recorded by the signal from the decoder 3 (the current signal level is zero).

The elements of the decoder 3 are triggered when pulses are received from a 2-level quantizer, as a result of which two signals can be generated at two adjacent outputs of the decoder 3 during the pulse of the master oscillator b. actuation of the decoder 3.

Unit 4 fixing code works as follows.

In the case of continuous noise coming into a 2-level quantizer, consider a certain interval on the time axis. Here, we will assume that the instantaneous value of the noise is between the second-i and the third levels of the quantizer of 2 levels. Consequently, signals appear only at the outputs of the first and second levels of the Quantizer 2 Zfovnei, which are fed to the corresponding inputs of the decoder 3, I Next, the unit potentials from the output of the element And 9.2 and the second input of the second group of inputs of the decoder 3 enter the inputs of the element And,, and if at this time a pulse comes from the master oscillator 6, then from the output. element ..and the zero potential is fed to the input of the S - trigger 8.2. of the shift register 5 and sets it in the single state, I will act further. through diode 11I of the block 4, fixing the code to the inputs of the logic elements AND 10.3j 9.3, 9.2 of the depotraper 3, C of the trigger code 8.2 of the 5 shift register Potential through diode 12.2 enters the inputs of logic elements And 10.2; 9.2 and

9.1. Thus, the zero signal is maintained at the input of AND 10.3 elements; 9.3, 9.2, and a single file at the input of the elements And 10.2; 9.2 and 9.1, regardless of whether or not the change of the signals at the input of depotfrarator 3 occurred during the pulse from the master oscillator 6, the code fixing unit 4 does not affect the switching of the triggers of the shift register 5. Since in this case the trigger 8.2 of the register 5 the shift is set to one, then a single signal from the output of this flip-flop arrives through diode 12.2 at the inputs of the And 10.2, 9.2, 9..1 elements. And fixes their states until the arrival of the shift pulse from the generator 7 clock pulses. When a pulse arrives from the J clock pulse generator, the signal is rewritten from trigger 8.2 to trigger 8.1 of shift register 5. As a result, a single signal appears at the output of trigger 8.1, which through diode 12.1 enters the inputs of elements 10.1, but this no longer affects the switching of the triggers of the shift register 5.

The pulse period of the master oscillator 6 is much longer than the maximum possible delay time of the signal in the shift register 5, i.e.

Tr, M - 1 / F ,, where M is the number of triggers in the register

5 shift;

F is the pulse frequency of the generator of 7 clock pulses.

Consequently, before the next pulse arrives from the master oscillator 6 to the decoder 3, the shift register 5 is zeroed and ready to receive the next signal.

Noise generator 1 produces low-frequency noise with a mathematical expectation of instantaneous values of the noise voltage shifted to a positive region.

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The dispersion of time periods following the output of the device is changed by changing the power of the noise generator 1, which entails a change in the probabilities of the occurrence of instantaneous noise values at all levels of the quantizer of 2 levels.

The expectation of the periods of time following the intervals of the device output is determined by the period of the pulse of the master oscillator 6.

Thus, the use of this device provides a high quality of the generated random sequence of time intervals by independent adjustment of the time parameters with the priori determination of their values.

Claims (1)

Invention Formula A random time interval generator containing a serially connected noise generator and a level quantizer, serially connected clock pulses to a shift register, characterized in that, in order to improve the parameters of the generated random time interval sequences by independently adjusting the time parameters of the intervals, serially connected are entered into it master oscillator and decoder, the outputs of which are connected to the corresponding inputs of the first group of inputs code fixing unit and with the installation inputs of the corresponding bits of the shift register, the outputs of the corresponding bits of which are connected to the corresponding inputs of the second group of inputs of the code fixing block, the outputs of which are connected to the corresponding inputs of the first group of inputs of the decoder, the second group of inputs of which are connected to the corresponding quantizer level outputs.