SU711579A1 - Digital discriminator for analysis of random process probability distribution density function - Google Patents

Description

one

The invention relates to the field of specialized computing equipment intended for the instrumental determination of static characteristics of random processes.

The analogue of the invention is the digital discriminator of the analysis of the function and probability distribution of random processes, consisting of a scaling circuit, input keys of the initial level, a delay line, coincidence circuits, triggers for outputting a result and generating a differential window, a switch for setting the analysis level 11.

The disadvantage of such a discriminator is circuit complexity and low speed.

The closest technical solution is a digital discriminator for analyzing the function and probability distribution density of a random process that contains a counter whose output is connected to the 5 input of a protective trigger — the input of which is combined with the input of the switch and is the first input of the discriminator and the counting input of the counter is the second input of the discriminator t 2,

. The disadvantage of this discriminator is that it does not allow to obtain a set of ordinates of a function or the probability density distribution of a random process in real time, i.e., to conduct a parallel analysis of

0 many levels

The aim of the invention is to improve the speed of the discriminator.

For this purpose, an additional switch is introduced into the digital discriminator for analyzing the function and density of probability distributions of a random process and, according to the number of detectable ordinates, measuring blocks each of which consists of

DKV - trigger and element And, while K - the inputs of all 3 KV - triggers are combined and connected to the output of the additional switch,

Whose input 5 is connected to the output I of the counter, the J input of the trigger of the first measuring unit is combined with the V input of this trigger with the V inputs of the remaining triggers and is connected to the single output of the protective trigger, O the inputs of the other triggers are connected to the zero output the trigger of the preceding measuring unit, the single outputs of each of the triggers are connected to the first input of the corresponding element AND and are the first outputs of the discriminator, the second outputs of which are the outputs of the AND element, the second inputs of which They are combined and are the third input of the discriminator. The block diagram of the discriminator is shown in the drawing. The discriminator contains a protective trigger 1, a counter 2, switches B-b, a measuring unit 7, an additional switch 8, elements. And 9, 3KV-triggers 10 The device operates as follows 6m. Installed on some. level of analysis X, corresponding to the conditional beginning of the distribution curve (this level is called the initial level). Adding to the initial level the increment of LH (which can vary, gives the first level of analysis x - x „+ dx. Accordingly, the j-level of analysis K: O - JA - numerically the level Xp corresponds to the number MD, the level x; - the number of HZ /, and the increment is D, the number of a and G. is 0, 1, 2, ... When determining the values of the distribution function, the device operates as follows: The pulse from the sampling generator is fed to the first input of the discriminator, and a number is entered into the counter 2, specifying the level of analysis and at the same time the trigger 1 is set to zero. The specified number depends on the positions of the switches 3-6 of the discriminator. When the moving contacts of the C-b switches are closed to non-fixed contacts connected to the 5 inputs of the scaling circuit, the number corresponding to the minimum possible initial level is fixed in it. The nature of the DX depends on the position of the additional switch 8. With the help of the latter, the K inputs of the flip-flops 10 are connected to the output of the n-th triggere discriminator, i.e. Viznyo contacts switches ZB in the opposite position. The combination of the position of the movable contact switches 3-6, you can change the numbers that set the initial level of analysis, then O to 2 (k is the number of trusters in the counter). With a minimum discreteness 1. Pulse packets arrive at the second discriminator. The number g. pulses in the i-th packet is proportional to the voltage value of the studied implementation at the moment of the 1st sample. In the counter, this number is compared with the number o which defines the initial level of analysis. If, after C arrives at the counter, then pulses (C is the capacity of the counter), at its output, tpe is an overflow pulse that translates trigger 9 into a single state. In this case, the resolving potential is applied to the V-inputs of the measuring unit triggers, and the trigger 10 of the first measuring unit is set to state 1. A voltage drop occurs at its single output, meaning that the implementation under study has exceeded the specified level of analysis. This event captures the counter of this block. Simultaneously with the installation of the trigger 10 of the first measuring unit, the element I 9 of this measuring unit is unlocked in state 1 (which is used in the measurement of density). If the output number of the nth trigger of the counter occurs, a voltage drop occurs, which returns the trigger 10 of the first measuring unit to zero. As a result, a voltage drop is formed at its inverting output, setting to 1trig-. Ger 10 of the second measuring unit. Then, the voltage drop detected by the counter of the second measuring unit appears at the single output of this trigger and the AND 9 element of this measuring unit is unlocked. If the number :: m p-e 2a, then the output of the AND-th trigger once again shows the voltage drop, the result of which is the voltage drop, at the first output of the third measuring unit. Under the condition - tn,., Ja, the voltage drops -will- be recorded in the counters of the first (j +) measuring units. In subsequent samples. The process proceeds similarly. After the Nth samples have been taken, the readings of the meters connected to the first outputs of all p measuring units are the p-ordinate estimates of the distribution function. To obtain estimates of the ordinates of the density distribution curve, it is necessary to connect pulse counters to the second outputs of the measuring units. If, in addition, there are counters on the first outputs, then the values are measured in parallel; and distribution functions. When measuring the density distribution of the number, a determines the width

Claims (1)

Claim A digital discriminator for analyzing the function and probability density of a random process, which contains a counter whose output is connected to the S-input of the protective trigger, V - the input of which is combined with the input of the switch and is the first input of the discriminator, and the counting input of the counter is the second input of the discriminator, characterized in that, in order to increase the speed of the discriminator, an additional switch is introduced into it and, by the number of ordinates determined, the measuring units, each of which consists of a 3KV ~ trigger and the And element, in this case, the inputs of all ΠΚν-triggers are combined and connected to the output of an additional switch, the input of which is connected to the output of the counter-discharge, and the input of the trigger of the first measuring unit is combined. with V - input of this trigger and with V-inputs of the remaining triggers and is connected to a single output of the protective trigger, J- inputs of the remaining triggers are connected to the zero output of the trigger of the previous measuring unit, the individual outputs of the triggers are connected to the first input of the corresponding element And are the first outputs of the discriminator, the second outputs of which are the outputs of the element And whose second inputs are combined and are the third input of the disco.