SU1674351A2 - Generator of random flux of pulses - Google Patents

Abstract

The invention relates to a pulse technique and can be used in information and measurement technology. The purpose of the invention is to expand the functionality by increasing the number of laws for the distribution of the generated pulse streams, which is achieved by introducing into the generator a random stream of pulses of the coordinate determining unit 18, the function calculating unit 19 and the formation of new functional connections. The drawing also shows sensors 1, 9, and 13 random numbers, digital-to-analog converters 2 and 8, blocks 3, 7, and 14 comparisons, sensors 5 and 6 of exponential voltage, shapers 4 and 10 pulses, And 11 and 16 elements, OR element 12 , D-TRIGGER 15, ELEMENT 17 DELAY. 2 IL.

Description

The invention relates to a pulse technique and can be used in information technology.

The aim of the invention is to expand the functionality by increasing the number of laws of distribution of the generated pulse flows,

In FIG. 1 is a structural electrical diagram of a random pulse stream generator: in FIG. 2 is a graph of a distribution function of a plurality of membership function values.

The random pulse stream generator (Fig. 1) contains the first random number sensor 1, the first digital-to-analog converter 2, the first comparison unit 3 and the first pulse generator 4, the first exponential voltage sensor 5, the second exponential voltage sensor 6 and the second block 7 connected in series comparison, the second input of which is connected to the output of the second digital-to-analog converter 8, the input of which is connected to the output of the second random number sensor 9, the second driver 10 imp LSS, the first element And 11 connected in series, the OR element 12, the third random number sensor '13, the third comparison unit 14, the D-trigger 15 and the second And 16 element, the delay element 17, the coordinate determination unit 18 and the function calculation unit 19 connected in series , the outputs of which are connected to the second group of inputs of the third comparison unit 14, the first group of inputs of which are connected to the group of inputs of the coordinate determination unit 18. The output of the first pulse shaper 4 is connected to the first input of the first element And 11, the second input of which is connected to the second output of the D-trigger 15, the second input of which is connected to the output of the delay element 17, the input of which is connected to the input of the second random number sensor 9, the input of the second an exponential voltage sensor 6, an input of a first exponential voltage sensor 5, an input of a first random number sensor 1 and an output of an OR element 12, the second input of which is connected to. the output of the second element And 16, the second input of which is connected to the output of the second pulse shaper 10, the input of which is connected to the output of the second comparison unit 7. The output of the first exponential voltage sensor 5 is connected to the second input of the first comparison unit 3.

The random pulse flow generator operates as follows.

The first and second sensors 1 and 9 random numbers when applying to their input (poll) · pulse from the output of the element OR 12 generate independent uniformly distributed random numbers.

At the outputs of the first and second digital-to-analog converters 2 and 8, analog signals are generated whose amplitudes are proportional to the generated random numbers. Synchronously with the first and second random numbers sensors 1 and 9, the first and second exponential voltage sensors 5 and 6 are turned on, the amplitudes of the output signals of which increase exponentially the laws. The choice of exponential laws is determined in accordance with the required parameters of the random pulse stream generated by the device. In this case, the first exponential voltage sensor 5 generates a voltage that meets the parameters of the basic distribution law. The second exponential voltage sensor 6 generates a voltage that is used to generate a Poisson pulse stream that changes (distorts) the distribution law of the main pulse stream. The signals from the outputs of the first and second sensors 5 and 6 of the exponential voltage, as well as from the digital-to-analog converters 2 and 8, are supplied to the first and second comparison blocks 3 and 7, respectively. At the moments of equality of voltages supplied to the first and second inputs of comparison blocks 3 and 7, each of these comparison blocks generates a signal, which then arrives at the first and second pulse formers 4 and 10, respectively.

The passage of the pulse generated by the shaper of 4 or 10 pulses to the output of the device is organized in accordance with the required law of displacement of the main and distorting `` main Poisson flows of pulses. The implementation of the required mixing law is as follows. The next output pulse of the device starts the third sensor 13 random numbers, the output of which is a binary evenly distributed number% | arrives at the first group of inputs of the third block 14 comparison. On the other group of inputs of the comparison unit 14, the current value of the membership function / (ρ (Ρί). Is calculated, which is calculated in the function calculation block -19. For this, the coordinates of the support are determined in the coordinate determination unit by the value #) (Fig. 2) Pr · ( а + о) -2 а% !, where hell are the parameters of the membership function characterizing the center of grouping and the scatter of the elements of the set of probability values. These coordinates are used in the function calculation unit 19 to calculate μ _Ρ (Pi) = 1 -. For χι> μ \ (Pi), the output of the comparison unit 14 produces a level of a logical unit, which means that a distorting pulse does not appear in the resulting pulse stream, otherwise, a level of logical zero is generated.

The signal from the output of the comparison unit 14 is fed to the input (D-input) of the D-flip-flop 15. The second signal input (synchronization) of the D-flip-flop 15 is supplied with the device output signal delayed by the delay element 17 by an interval equal to the total delay time of the third random number sensor 13 and block 14 comparison. When this pulse arrives at the synchronization input, D trigger ^ is set to a single or zero state depending on the signal at its D-input and remains in this state until the next signal arrives at its synchronization input. The single or zero state of the D-flip-flop 15 opens the element And 11 or the element And 16, respectively, thereby ensuring the passage of the next pulse belonging to the main or distorting main stream of pulses. The organization of the passage of the next impulse from the element And 11 or element And 16 to the output of the device is carried out5, is made using the element OR 12.

The next pulse from the output of the OR element 12 starts the sensors 1 and 9 of random numbers, as well as the sensors 5 and 6 of the exponential voltage to form the next 10 pulse of the device.

The coordinate determination unit 18 and the function calculation unit may be performed in the form of ROMs programmed to determine P | And, _p (P |), respectively.

Claims (1)

15 Formula of the invention Geneatoato random pulse flow by ed. No. 1487155, distinguished by the fact that, in order to expand functionality by increasing '· 20 of the number of laws of distribution of the generated pulse flows, it is additionally introduced into it sequentially connected unit for determining coordinates and a unit for calculating functions, the outputs of which are connected to the second 25 by the group of inputs of the third comparison unit, the first group of inputs of which is connected to the group of inputs of the coordinate determination unit.