SU385281A1 - DEVICE FOR RESEARCH OF POINT RANDOM RANDOM PROCESSES - Google Patents

Description

one

The invention relates to the field of radio electronics and can be used in the field of biology and for the study of point random processes, for example the pulsed activity of individual neutrons, the crossing points of an encephalogram.

The proposed device makes it possible to observe directly on the screen of an oscilloscope 10 in the course of conducting an experiment (as well as with a machine gap) a correlation field of time intervals of point processes in (histograms of adjacent intervals) and is intended to statistically identify correlations between two consecutive interstitial intervals in the course of the experiment.

Apparatus for investigating random processes are known, comprising a control unit, vertical and horizontal deflection potential generators, a logical switch, differentiating circuits and an oscilloscope.

At present, the necessary transformations are performed using a digital computational mask (DVM). In this case, an additional device is required for converting time intervals to a .dl code for input into a digital computer. The digital computer memorizes the code, and from the digital computer output the signal in the form of a code is converted by a special device into a potential for

Oscillators. Oscillator plates or codes are manually plotted on the graph.

The use of a digital computer requires the availability of expensive equipment by transforming the interval-code and code-potential.

The aim of the invention is to create a small-scale display device that provides visual observation of the correlation field during the experiment.

The achievement of the set goal is provided by a circuit in which the method of converting the interval-potential, in which the circuit contains a control unit connected to the formers of the deflectors of plate X, is used in forming the deflecting potential of plates X and at the oscilloscope. and Y. In the Proposed Device. Each driver X T Y Y uses, two generators of niloi voltage. To separate the present and the previous. Intervals, the control unit is designed as a trigger with a counting input, the outputs of which are connected to sawtooth generators of the formers and logical co | Mmutatoro. Former X provides the formation of a deflecting potential, proportional to this interval; .former Uformirova.Nie and memorization of the deflection potential proportional to the previous

the interval, and the logical switch is the feed, to the plate F of the oscilloscope of the potential of the previous interval during the present, inter, shaft.

The circuits of the field on the element. X discrete equipment (inverters), .invistors, and semiconductor devices of the low-voltage type.

FIG. 1 is given a block diagram of the device; in fig. 2 - Schematic diagram of the device; on f, ig. 3 - time relationships of signals.

The device contains a control unit /, input blocking generator 2, trigger 3, form factor 4 X horizontal deflecting potential, generator 5, 6 sawtooth voltage shaper L, emitter follower 7 shaper, shaper 8 V vertical deflecting potential, generators 9, 10 sawtooth model of the former U, cathode repeaters /./, 12, logical switch 13, coincidence circuits 14, 15, emitter follower 16, oscillo: skop 17 and differentiating 1t.pi-M, - / L, f. :

The device works as follows.

To build a correlated field .i: in a two-coordinate system, a potential should be applied to plate X of the oscilloscope 17, which is proportional to the present interval (the current time), to plate Y, which is proportional to the previous interval.

In the device for the formation of the deflection potential of the plates X, the oscilloscope uses an interval-potential conversion method, for 1 kotor.m. the circuit contains a control unit ./ connected to the shape-shifter and the deflection voltage: X 4 and Y 8 and the logical switch 13.

To ensure the separation of the present and the previous interval in the control block / performed in the form of trigger 3 with a counting input, controlled by the input / m-blocking generator 2 with a delay line. The outputs of trigger 3 are connected to generators and sawtooth voltages 5, 6, 9 and 10 of both drivers 4, 8 by a logic switch 13. Shaper X 4 provides for the form of a deflecting potential, proportional to the present interval, the shaper U 5 is the odds, the interposition. and the storing of the deflecting potential proportional to the previous interval, and the logical commutator 13 consisting of the coincidence circuits 14, 15 provides the potential for the previous interval for the Oscilloscope the present interval.

The supply of potentials to the plastic of an oscilloscope is provided by an emitter detector 1m 7, 16.

The launch of devices for production of pulses with input pulses (Fig. 3, signal a) is different. and the delayed delay line 20. The hold on the input signal is necessary for the transient processes associated with triggering the trigger and the saw of the sawtooth voltage to begin some time after the start of the backlight pulse (the input pulse is used as the light pulse). Thus, there is no need to form a special pulse of light in the period’s co-pattern, since the pulse is used at the beginning of the next period. Impulse positive

polarity through a capacitor is fed to / in the code of the trigger assembled on the floor of the first triodes (rg 3 signals in c, d). ,

Sawtooth generators are assembled on triodes 22 and 23.

The principle of operation is as follows ..:

Tr. 22 (23) prohibition of the negative) by the 1st potential of the closed arm of the trigger (the stray mode is matched with constraints 24 and

25). The charge of the capacitor from the set of co-capacitors (26-29) from the source of the nit, neither + 6.3 8 through the resistance 30, t. in the collector circuit, a gradually increasing voltage appears (Fig. 3). The speed,, for growth (saw steepness) depends on the size of the sigher resistance and 30 and the capacitor 26. The choice of their nominal values is produced from the calculation of the partial charge capacity until the next input pulse, which flies the trigger to the open state. Tr. 22 is opened, the coldeiser 26 through the open circuit. Is quickly discharged, and throughout this period the potential of the collector BL. Pig to 0. At the same time, the triode 23 is locked and the capacitor 31 (31-34) is locked through resistance 35 (e). By switching the capacitors 26-29 and 31-34, different ranges of operation are included. The emitter repetition of the polarity and of the stranded voltage collected on the thrash of the water have a common smitter load (5). To the input circuits of the repulsers, sawtooth voltage is applied, and the summed signal is used as the deflection voltage X (g).

The sawtooth generators are assembled with two inverters 37 and 3S (39 and 40) connected in series.

Current through both inverters .mozhet

In the event that both signals are sent to both inputs, negative signals are given. In this case, the capacitor 41. Of the set of capacitors (41-44 is completely discharged through the inverter 38. A negative signal at the input of the inverter 37 opens it, and the current flows through the resistance 45 and the capacitor 41, for. the last. Then the motor igger is transferred, the input of the inverter 37 is supplied with a zero potential, which closes the inverter. The charging current is stopped, but the capacitor 41 is not r.azr (the potential is memorized because the inverter 38 is locked). reversing the tr.igger opens both .inverters and the capacitor 41 is discharged .ts (i. m.). Signals

formed on inverters 37-40, through

The cathode repeaters 46 and 47 are again fed to coincidence circuits to allocate a flat part of the signal (memory period). The coincidence circuits are assembled n, and the inverters 4S, 49 and 50, 51, connected in series.

The amplified and inverted signal is removed from the collector load 48 (51) only. At the moment when there is an unlocking potential at the input of the inverter 49 (50). This potential is removed from the trigger at the moment when the generator: the sawn voltage does not change the potential (memory potential). These potentials are then applied to the input of the emitter followers 52, 53, and alternating loads, and are used as the deflecting potentials of the plate V (n).

Subject and worn

A device for investigating point random processes, containing a control unit, vertical and horizontal deflection potential formers, loops (K10MMutato | p, differentiating circuits, oscilloscope, characterized in that

during the experiment, each driver in it is made on two, x sawtooth voltage generators, the input of the first sawtooth voltage generator of the horizontal deflecting potential generator is connected to the output of the control unit, and through the corresponding differentiating circuit to the first sawtooth voltage generator and directly to the second a generator of a forked voltage of a vertical deflection potential generator, the second generator of a sawtooth voltage of a horizontal generator The total voltage deviation is connected directly to the control device, to the first sawtooth generator of the vertical deflection potential generator, and through a corresponding differentiating voltage (A circuit with the second sawtooth voltage generator of the vertical deflection potential generator; the output of the horizontal deflection potential generator is connected to the corresponding plate oscilloscope directly as well

the outputs of the vertical deflection potential generator - through a logic switch.

20bkho x

Pu2 2

ihJ

d

e well

/ j

M