SU1684917A2 - Generator of random flux of pulses - Google Patents

Abstract

The invention relates to a pulse technique. The purpose of the invention is to increase the accuracy - achieved by introducing into the generator a random stream of pulses from the group of shapers 14.1-14.p pulses, the OR 15 element and the formation of new functional connections that ensure the elimination of transition periods due to the initial installation of dividers 12.1-12.n frequency. The generator also contains the elements OR 1, 4 and 13, a random number sensor 2, a comparison block 3 and 17, a pulse shaper 5, a clock pulse generator 6, a precision setting block 7, a precision setting block 7, a shaping unit 8, a intensity setting block 9, a bus 10 controls, a group of elements And 11.1-11.p, counters 16 and 23 pulses, registers 18 and 20. multiplication unit 19, adder 21. a decoder 22, a group of buses 24.1-24.P controls, a group of 25.1-25 blocks. And, a block of 26 elements OR. 1 il.

Description

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The invention relates to a pulse technique and can be used in computing,

The aim of the invention is to improve the accuracy.

The drawing shows a structural electrical circuit of a random pulse generator.

The generator contains the first element OR 1 connected in series, a random number sensor 2, a comparison unit 3, a second element OR 4 and a pulse shaper 5, a clock pulse generator 6 in series and a precision setting unit 7, a normalization unit 8 whose input group is connected to the first group the inputs of the intensity setting unit 9, the control bus 10, a series of elements connected in series

11.1-11.p, the group of dividers 12.1-12.p frequency and the third element OR 13, serially connected group of drivers 14.1-14.p pulses and the fourth element OR 15, the output of which is connected to the inputs of the installation of dividers 12.1-12.p frequency. The control bus 10 is connected to the first input of the first element OR 1 and to the generator input 6 clock pulses, the output of which is connected to the input of the intensity setting unit 9 and the control input of the normalization unit 8, the installation input of which is connected to the second input of the first element OR 1, to the output shaper 5 pulses, with the second input of the unit 7 setting accuracy and with the first inputs of the elements And 11.1-11. With the group of elements And, the second inputs of the elements And 11.1-11 .p. which are connected to the inputs of the respective formiroO 00

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14.1-14.p. pulses of the group of pulse formers and with the corresponding outputs of the second group of outputs of the block 9 sets the intensity. The output of the precision setting unit 7 is connected to the second input of the second element OR 4. The outputs of the rating unit 8 are connected to the second group of inputs of the co-section 3.

Accuracy setting unit 7 comprises a pulse counter 16 connected in series and a comparison unit 17, the second group of inputs of which is connected to the outputs of register 18. The first input of precision setting unit 7 is connected to the first input of pulse counter 16, the second input of which is the second input of precision setting unit 7 whose output is the output of the comparator block 17.

The normalization unit 8 contains serially connected multiplication unit 19, a register 20 and an adder 21, the outputs of which are the output group of the normalization unit 8, the input group of which is connected to the first input group of the multiplication unit 19, the second group of input inputs of which is connected to the outputs of the register 20, control inputs and the settings of which are the control and installation inputs of the rating unit 8.

The intensity setting unit 9 contains a decoder 22, the inputs of which are connected to the outputs of the pulse counter 23, a group of control buses 24.1-24.p connected to the input groups of the respective blocks 25.1-25. The elements AND of the block groups And elements, the inputs of the blocks 25.1-25. n elements And which are connected to the corresponding outputs of the decoder 22, which are the second group of outputs of the intensity setting unit 9, the input and the first group of outputs of which are connected respectively to the input of the counter 23 pulses and to the outputs of the block OR elements whose inputs about connected to the outputs of the blocks 25.1-25. The elements And groups of blocks of elements I.

The generator of a random stream of pulses works as follows.

Before starting work in the register 20 of the normalization unit 8, a single value is set, in the register 18 of the precision setting unit 7, the number m of discretization steps of the type is specified

f (ti) "1-6,1-1,2m.

where And the intensity of the pulses of a random stream;

L T - the discretization step of the exponential dependence.

The counters 16 and 23 pulses are set to the zero state.

On tires 24.1-24.p, the control bus groups are set to values (),

(e r t) ... (e), where n - determines the number of different exponential dependences of the form fi (t) 1 - efljt, in accordance with which pulse fluxes of various intensities are produced.

The sequence of setting the values () on the tires 24.1-24.p of the group of control busses of the intensity setting unit 9 determines the order of transition to each subsequent intensity of the generated

random flow of pulses

When a start pulse arrives at the control bus 10, which simultaneously enters the generator 6 clock pulses and through the element OR 1 at the sensor 2

random numbers, a generator of 6 clock pulses begins to generate pulses with a period of DT, the sensor 2 random numbers are random numbers distributed evenly over the interval (0.1), which arrive at

block 3 comparison.

When accumulating in the counter 16 pulses of a number equal to t, the block 17 is triggered comparing the force of equality of the counter contained 16 pulses and the register 18. The block

17 comparison generates a single signal, which, passing through the element OR 4, arrives at the shaper 5 pulses, which, in turn, on the leading edge of the received signal produces

single impulse. By means of a pulse counter 23, the order of the change in the intensity of the generated pulse stream is monitored.

In accordance with the increasing

the value of the contents of the pulse counter 23 is the sequential excitation of the output tires of the decoder 22, which connects through the corresponding blocks 25.1-25.

elements OR to block 19 multiply the different busses 24.1-24.p control (set constant eLI, ,, .....) In block 19 multiply, multiply the number in the register

20, and the number coming from the output of block 26 of the elements OR. The resulting product is recorded in register 20 when the generator produces; 1, 6 clock pulses of the next pulse, which permits writing to the register 20 of the contents of block 19 multiplication.

Thus, at the moments of time ti i DT in the register 20 there will be numbers

In the adder 21, a subtraction operation is performed from the content unit of the register 20, i.e. the output of the adder 21 is formed by the number

Bi- 1 -Ai-I, 1-1,2m

Thus, at the output of the adder 21, when the generator generates 6 clock pulses of each successive clock pulse at times 1 AT, there is a number corresponding to the value of the exponential distribution law function.

To ensure the required accuracy of setting the function of the discrete exponential law of distribution, the constants must satisfy the condition 1 - p, where, for example, p is 0.05.

The comparison unit 3, at the moment when the contents of the adder 21 becomes large in a random number generated by the random number sensor 2, produces a single signal. This signal, the passage through the element OR 4 on the driver of the 5 pulses, ensures the generation of the next successive pulse of the output random flow. This pulse sets the register 20 to one.

The signal from the output of the imaging unit 5 pulses is fed to the inputs of the elements And 11.1-11.P, one of which is open to signals from the corresponding output of the decoder

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five

22. Thus, the pulse of the driver of the 5 pulses passes through one of the elements And 11.1-11.p to the input of the corresponding divider 12.1-12.p frequency. The signals from their outputs are combined with the third element OR 13 and arrive at the output of the device.

In addition, when the state of any of the outputs of the decoder 22 changes, the output of the corresponding driver 14.1-14.p produces a pulse, which through the fourth element OR 15 is reset to the initial state of the frequency divider 12.1-12. As a result, there is no transition period in the transition of the Erlang stream of one order to another, which makes it possible to increase the accuracy of pulse generation.

Claims (1)

Claims of the Invention The generator of a casual stream of impulses on an auth.St. No. 1598131, characterized by the fact that, in order to increase accuracy, a series of pulse formers and a fourth OR element are added to it, the output of which is connected to the installation inputs of the frequency dividers of the frequency divider group; the inputs of the pulse formers of the pulse shaper group are connected with the corresponding outputs of the second group of outputs of the intensity setting unit.