SU1679521A1 - Apparatus for professional screening of operators - Google Patents

Abstract

The invention relates to devices for the study of psycho-physiological reactions. The purpose of the invention is to improve the accuracy of the device while improving the quality of operator selection by determining the speed of the selection reaction. The device comprises a random pulse train forming unit 1, a time setting unit (exposure), a switch 3, a recording unit 4, a pulse shaper 5, a light signal shaper 6, a comparison unit 7 and an operator response input unit 8. The device allows revealing the individual abilities of the operator according to the visually presented stimulus figure, expressed in the speed of the selection reaction — the speed of unambiguous identification. 10 il.

Description

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The invention relates to devices for the study of psycho-physiological reactions and can be used for the professional selection of operators.

The aim of the invention is to improve the accuracy of the device by improving the quality of the selection of operators for working with dynamic objects by determining the speed of the selection reaction — the speed of detecting and fixing the differences perceived visually.

FIG. 1 shows the structure of the device; in fig. 2 is a functional block diagram of the formation of a random pulse train; in fig. 3 — time setting block (exposure); in fig. 4 shows a switch, in FIG. 5 - registration unit; in fig. 6 - pulse shaper; in fig. 7 - shaper of light signals; in fig. 8 is a comparison unit; in fig. 9 - block input operator response; in fig. 10 - timing diagrams for the operation of the device.

The device for professional selection of operators comprises a random pulse train formation unit 1, a time setting (exposure) unit 2, a switch 3, a recording unit 4, a pulse shaper 5, a light signal shaper 6, a comparison unit 7 and an operator response input unit 8.

Block 1 contains a sensor 9 (random pulses), the element And 10 and the trigger 11.

x Block 2 includes a register 12, a group of elements And 13, a group of elements 14 delay, trigger 15. elements OR 16 - 18, element 19 delay. The number of elements in groups is 15, i.e. corresponds to the number of temporal gradations.

Switch 3 has elements And 20 and 21 and the element OR 22.

Block 4 includes counters 23-25 (correct, incorrect, and total number of responses), elements AND 26-28 and element 29 delay.

Shaper 5 contains one-shot 30 and 31, trigger 32, prohibition element 33, differentiation element 34, AND 35 and OR 36.

Shaper 6 includes an information board 37, keys 38-40 and the element OR 41.

Block 7 contains prohibition elements 421 - 424, elements OR 43i and 432, elements NOT 441 and 442.

Block 8 includes buttons 45 and 46 (left and right shapers of single pulses), element OR 47, elements AND 48 and

49, key 50, signal lights 51 and indicators 52 with banners. Tolerance, Check, No, End.

The device works as follows.

When the power is turned on, the pulse from the output of the one-shot 30 (potential) (FIG. Yua) is fed to the installation inputs to the initial state of the register 12 and the counters 23 25 (not shown), to the trigger input 32, the unit potential from the first output of which (Fig. 106 ) is fed to the input of the element 27 and to the indicator 52, illuminating the banner Tolerance, which notifies the subject about presentation of figures for discrimination, to the input of the element OR 22, the output pulse of which is applied to the second inputs of the elements AND 20 and 21, and through the element OR 17 to one inputs of elements And 13, but no further

will pass, since at their other inputs there are zero potentials from the output of the register 12, and to the input of the trigger 15, ensuring the appearance at its first output of a single potential (Fig. 10b-1), which is fed to the control inputs of the keys 38-40, the outputs of which are connected to the corresponding inputs of the scoreboard 37, and to the inputs of the elements And 48 and 49, remove the response time limits.

At one of the outputs of the trigger 11, for example the first, a single potential appears, which is applied to the control input of the element 421, the input

the element HE 44i and the first input element AND 20. The impulse from its output is fed to the information input of the key 38 and through the element OR 41 to the information input of the key 40. The unit potential from the outputs

Keys 38 and 40 will pass to the control inputs of the board 37, extending the left vertical line of the stimulus figure highlighted on it. The time of presentation of the stimulus figure is determined by the duration of the pulse with

the output of the one-shot 30, which is 0.5 seconds (Fig. South).

The subject, having determined a long vertical line, at the end of its flashing on the board 37, presses

the corresponding, for example left, button 45, at the output of which a pulse appears (Fig. 10e).

If the subject correctly identified the long line of the character figure on

board 37, then the unit potential from the output of the button 45 through the element And 48 will go to the information inputs of the elements 421 and 42З. Since the control input of element 42z has zero potential from the output of element HE 441, it will cause the appearance

at the output of the element OR 432 pulse, which goes to the input of the counter 23, fixing the correct answer.

At the same time, the pulse from the output of button 45 (left) through the OR element 47 is fed to the information input of the element 33, to the control input of which from the second output of the trigger 32 a zero potential is applied, to the input of the counter 25, fixing the answer, and to the information input of the AND 10, To a control input of which random impulses are fed from the output of sensor 9. If at the moment from the output of sensor 9, a single potential is applied, then at the output of the element I 10 there is a pulse that changes the state of the trigger 11 to the opposite, i.e. at its second output, the unit potential that is applied to the first input of the element 21.

The pulse from the output of element 33 through the element OR 36 is fed to the input of the one-vibrator 31, the pulse from the output of which (Fig. 10e) is 0.5 seconds long through the elements OR 22 and is applied to the second inputs of the elements AND 20 and 21. The pulse from the output of the element AND 21 (since there are single potentials on its both inputs) will provide a presentation of a stimulus figure on the board 37, whose right vertical line is longer.

If the subject makes a mistake (incorrectly determines a long line), then on the second output of block 7 there is a VITS pulse that goes to the input of the counter 24. At its first exit, VITS has a pulse through element 27, to the second input of which the unit potential with the first output of the trigger 32, will enter the input of the indicator 52, highlighting the banner No, i.e., the subject is not allowed to be checked on this device due to insufficient distinguishability of the lines of the stimulus figure with a considerable time for identification (0.5 s).

If the test subject responds ten times correctly, then an overflow pulse appears at the output of counter 25 (Fig. 10g), which will go to the input of trigger 32, transferring it to the second state (Fig. 106) and supplying a single potential to the indicator 52, thereby submitting the Verification command, which instructs the subject to continue testing, but to give a response during the luminescence of the board 37 through the OR 18 element and the delay element 19, applying information and clock pulses to the corresponding inputs of the register 12 and ensuring the writing of the logical unit to its first ra p d, and the delay through element 29 - on zeroed inputs of counters 23 - 25, setting them to their original position.

The unit potential from the second output of the trigger 32 enters the control input of the element 33, preparing the circuit for a response in accordance with the time of presentation of the stimulus figure.

A single potential from the first output of the register 12 (Fig. 10.3-1) is fed to the first input of the element I 13i, to the second input of which from the output of the differentiation element 34 a short pulse is applied (Fig, 10i-1) formed by the leading edge of the pulse from the output of the single-oscillator 31 This pulse enters the input element 14i, the delay time of which is 220

ms On the display 37, a stimulus figure is illuminated by the pulse supplied from the output of the switch 3, and the unit potential coming from the output of the block 2.

The subject determines a long vertical line and presses the corresponding button on block 8. If he laid in time (220 ms) and correctly determined the long line of the stimulus figure, then the pulse from the button’s output, for example, 45, will go through And 48 to another input which the unit potential is given from the first output of the trigger 15, to the corresponding input of the block 7, ensuring the appearance of a single pulse at its first output,

which is fixed in the counter 23.

The pulse from the output of the element OR 47 goes to the input of the counter 25, fixing the answer, and to the input of the element AND 10, in the presence of a single potential at another input of which the trigger 11 will change its position. The delayed pulse from the output of the element 14i through the element OR 16 enters the input of the trigger 16, ensuring the appearance of a single potential at its second output (Fig. 10c-2) and stopping the flashing of the stimulus figure on the scoreboard 37.

The unit potential from the second output of the trigger 15 is fed to the input element And 35 (third input). At the end of the pulse with

the output of the one-shot 31, at the second output of the differentiation element 34, a short pulse (Figs. 10-2), which through the elements 35 and OR 36 goes to the input of the one-shot 31, launching the last (Fig. 10e).

The impulse from the output of the one-shot 31 with a duration of 0.5 s enters the input of the element And 22 and the element 34 of the differentiation. A short impulse from the first output of the element 34 (Fig. 10i-1) will go to the input of the trigger 15, transferring the latter to the first position and ensuring the flashing of the stimulus figure on the board 37 in the same way as described.

If the subject was laid in time, but incorrectly determined the long line of the stimulus figure, then at the second output of block 7 there is a pulse that will go to the input of counter 24, registering the wrong answer.

If the subject is not timed, then the answer will be recorded only by the counter 25.

If, after ten answers, the subject has answered eight or more correctly, then the unit potentials from the eighth output of counter 23 and the tenth output of counter 25 arrive at the inputs of element 26. The pulse from the output of the latter (Fig. 10k) goes through the element OR 18 to the shear the input of register 12, ensuring the movement of the logical unit for one bit (Fig. 10h-2). The unit potential from the second output of register 12, applied to the first input of element I 132, will ensure the transition to the second cycle, i.e., the presentation of the stimulus figure on board 37 for 200 ms (Fig. South).

At the same time, the pulse from the tenth output of the counter 25 through the delay element 29 will return the counters 23-25 to the initial state.

If the subject during the responses in the cycle (one gradation) makes three or more errors, then after the tenth answer, the pulse from the output of element 28, to the inputs of which the unit potentials from the outputs of counters 24 and 25, go to indicator 52, issuing the command End , and to the control input of the key 50, ensuring the illumination of the signal lamp 51, the number (gradation) of which indicates the selection reaction rate reached by the operator.

The use of a device for the professional selection of operators in the study of psychophysiological reactions makes it possible to determine and train the skills of the speed of selection reaction by detecting and fixing the differences perceived visually. At the same time, the possibility of unambiguous recognition of a stimulus figure within a time of 0.5 s is first determined (in order to prevent operators with low distinctiveness from further testing), and then the time of presentation varies cyclically (220, 200,180,160,140,120,100, 90, 80, 70, 60.50, 40, 30, and 20), and the assumption of errors in the cycle, not exceeding a specified number, provides an automatic transition to the next cycle, i.e., the time for detection

and the fixation of differences is reduced. This makes it possible to control the build-up of the speed of the selection reaction during trainings and to make a qualitative selection of operators for working with dynamic objects in human-machine systems.

Claims (1)

Invention Formula A device for professional selection of operators, comprising a comparison unit, the first and second inputs of which are connected to the corresponding outputs of the input unit for responding to operator actions, the first and second outputs - with the corresponding inputs of the registration unit, and the third and fourth outputs - respectively, with the first and second outputs of the random sequence generator pulses and the first and second inputs of the switch, and the pulse shaper, which is due to the fact that, in order to improve the accuracy of the device, the light driver, the first and the second information inputs of which are connected to the corresponding outputs of the switch, and the time setting block, the first output of which is connected to the corresponding input of the response input block actions of the operator and the control input of the light signal imager, the second output to the first input of the pulse former, and the group outputs to the corresponding inputs of the group of the input operator's actions, the second input of which is connected to the first output of the pulse generator, the third input - with the second output of the pulse generator and the corresponding input of the registration unit, the fourth and fifth inputs - respectively, with the first and second outputs of the registration unit, and the third output - with the input of the randomizer generator pulse sequence, the fourth input of the registration unit and the first input of the pulse shaper, the second input and the third and fourth outputs of the pulse shaper are connected respectively to the second output ode to both the first and second inputs of the task block time, the third input of which is connected to the corresponding output of the registration unit, and the fourth input to the corresponding output of the registration unit and the third input of the pulse generator, the fifth and fourth outputs of which are connected to the third and fourth inputs of the switch, respectively. w Fy