SU1254508A1 - Digital statistical analyzer - Google Patents

Abstract

The invention relates to computing. The aim of the invention is to extend the functionality by calculating a normalized histogram of the amplitude distribution of continuous and amplitude-quantized signals. The analyzer contains a pulse shaper, a frequency divider, a switch, and also N channels, in each of which a threshold element, an AND element, a counter, and a group of (N - 1) NOT elements, waiting for a multivibrator, are connected in series. When a signal with an amplitude sufficient for triggering the i-ro (i 1,2, ..., N) threshold element arrives at the analyzer's input, the counting in the i-th channel is resolved while the leading channels are disabled. With the help of the control part of the device, pulses are generated for the filling of channel counters, and a cycle of operation of the entire device is formed from measurement operations of reading and resetting. The filling pulses are considered to be channel counters, as well as a cumulative counter, the overflow of which prevents the counting of pulses in all channels, thus, for any measurement time, the number of pulses. Those entering the channel counters remain constant, normalized. 1 il. c ((l s: u sd cl

Description

From iStere Yeshe refers to computing and can be used to select signals from the group random by the calculated normalized histogram of the amplitude distribution.

The purpose of the invention is to extend the functionality of the analyzer by calculating a normalized histogram, the distribution of the amplitudes of continuous and amplitude-quantized signals.

The drawing shows a structural diagram of the proposed analyzer. The digital statistical analyzer contains the source 1 of the reference voltage and the resistive divider 2, which constitute the block for setting thresholds, the generator 3 clock pulses, the group N of threshold elements 4, the group (N - 1) of elements HE 5, the decoder 6, the divider 7 frequency, group R elements And 8, cumulative counter 9, a group of N counters 10, waiting multivibrator 11 and shaper 12 pulses,

The analyzer works in the following way.

The first inputs of the threshold elements, which are the input of the analyzer, are given a signal, and the second inputs - constant voltages from the outputs of the resistive divider 2, the input of which receives a constant reference voltage from source 1. When the first threshold element triggers The signal 1 is fed to the first input of the first element I. If the amplitude of the input signal is insufficient to trigger the second threshold element, the second input of the first element I is NOT also output 1 from the output of the second threshold element. In the measurement mode, the third inputs of the element group I receive impulses from the output of the decoder 6, and the third (fourth) inputs receive the counting resolution impulse from the overflow output of counter 9. When the amplitude of the input signal increases and the second threshold element triggers similarly to the first channel the resolution of the counting in the second channel occurs, but through the first element the counting in the first channel is NOT prohibited by supplying O from the output of the first element NOT to the first input of the first element I. go

the threshold element is similarly resolved account in the third channel with the simultaneous prohibition of two previous ones, etc.

The pulse counting is performed by channel counters 10.

The control part of the device consists of a generator of 3 pulses of pulses, a frequency divider 7, a decoder

6, the counter 9, the waiting multivibrator 1 1 and the pulse driver 12, are designed to receive fill-ups and form a cycle of operation of the analyzer as a whole, consisting of 5 of measurement, indication-read and reset operations.

The generator 3 clock pulses generates a periodic pulse signal, which is fed to the divider

0 7 frequencies. The outputs of the divider, which are formed; with the corresponding period, the filling pulses are connected to the inputs of the decoder, with which the measurement time of the signal to be measured is determined. A cumulative counter 9 is connected to the output of the decoder b. The volume of counter 9 is taken equal to the volume of one, from the group of channel counters 10. Under this condition, the channel counter does not overflow if the analyzer is supplied with a quasi-stationary process with a constant amplitude. From the output of overrun of counter 9, the signal to prohibit the counting is applied to the fourth inputs of the group N of elements AND and the input of the waiting multivibrator 11. Since the volume of the counter 9 is constant, at any frequency of the filling pulses to the third inputs of the group N of elements AND, at resolution of The fourth inputs also receive a constant number of pulses, i.e. the number of filling pulses is registered regardless of the measurement time. The measurement time is set by the decoder 6 and is determined by the formula:

five

0

five

50

  T-Uul and-z,

M,

where ty, f, is the measurement time;

Т „- period of impulses filled-.

nonsense;

M is the numerical expression of the cumulative counter.

Waiting multivibrator 11 over the front of it the pulse of the prohibition of the account

from the overflow output of the counter 9 generates an indication-reading pulse. With the existence of this pulse, the analyzer is in the stop state, which allows to indicate and record the result of the previous measurement, since the group of N elements I is closed at the fourth inputs by the overflow signal of the counter 9. By the falling edge of the pulse W 1, the read 12 generates a pulse Reset, which enters the reset inputs of the counters 10, the frequency divider 7 and the counter 9. The analyzer enters the operating state and a new cycle of operation begins.

Claims (1)

Invention Formula A digital statistical analyzer containing a clock generator, a counter, a group of N threshold elements, whose information inputs are combined, and the threshold setting inputs are connected respectively to the outputs of the threshold setting block, and the N outputs of the group threshold elements are connected to the first inputs of the N elements And groups, the outputs from the second to the Nth threshold elements are connected respectively to the inputs (N - 1) of the elements of the NOT group, the outputs of which connected to the second inputs of the AND elements of the group, except the first, the outputs of the N elements and the group are connected to the inputs of the N counters of the group, so that, in order to expand the functionality by calculating the normalized histogram of the amplitude distribution of continuous and amplitude-quantized signals It contains a divider - frequencies, a decoder, series-connected standby multivibrator and pulse shaper, the output of which is connected to the reset inputs N group counters, a counter and a frequency divider, whose information input is connected to the output of a clock pulse generator, and the bit outputs of the frequency divider are connected respectively to the inputs of the decoder, the output of which is connected to the counter input of the counter, to the second input of the first element And group and the third inputs from the second on the N-th element And groups, the third input of the first element of the AND group and the non-fourth inputs of the second to the Nth elements of the AND group are combined with the input of the waiting multivibrator and connected to the overflow output the counter, the combined information inputs of the noporoBbix elements of the group are the input of the analyzer. Editor A. Ogar Compiled by E.Sechin. Tehred RT. Popovigch Proofreader M. Maksimishinets Order 4723/54 Circulation 671. Subscription VNIITSH State Committee of the USSR for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, Projecto st., 4