SU1362446A1 - Apparatus for estimating effectiveness of operatorъs activity under monotonia conditions - Google Patents

Abstract

The invention relates to the field of medical technology and can be used in the automation of psychological and medical biological research. The purpose of the invention is the expansion of functional capabilities through the integrated assessment of human activity under monotonic conditions. The goal is achieved by the fact that the third element OR 24, the start trigger 26, the first element AND, the element NOT, the second element AND 2, the display counter 6 and the display register 7, connected in series the correct response extraction circuit 10, the counter 12 are entered into the device information, block 13 of information registers, switch 14, block 15 of the display of the experimenter, the fourth element OR 25, the fifth element OR 27, the invoice trigger 28, the third element AND 29, the specialized calculator 30 and the sequential connected half-time trigger 32, fourth element AND 33, amplifier 34 and loudspeaker 37, sequentially connected reactive keyboard unit 19, second OR element 20, drift protection element 21 and error highlighting circuit 11, as well as encoder 22, 4 random pulse generator, one-wave - the front edge torus 23, the test indication unit 8, the subjective state keyboard 16, the first element OR 17, the experimenter's panel 18, the fifth element I 35, and the time counter 36. 2 Il. (L with O5 to i about Figure 1

Description

The invention relates to medical technology, in particular to the automation of psychological medical and biological research, and may find application in the psychology and physiology of labor in the complex assessment of human activity under monotonic conditions in order to develop measures for professional selection, operator training, and optimization of human-machine systems. - production environment.

The aim of the invention is to expand the functionality due to the integrated assessment of human activity in monotonous conditions by providing an automated calculation of the dynamics of statistical indicators of activity, fixing the dynamics of various types of errors in the reactions and the dynamics of assessments of the subjective state of the subject.

FIG. Figures 1 and 2 show, respectively, a block diagram of a device for evaluating the efficiency of operator activity under monotonic conditions and a flowchart of an algorithm for the operation of a specialized calculator.

A device for evaluating operator performance in monotonous conditions includes a time stamp generator 1, the first element AND 2, the element NO 3, the generator 4 random pulses, the second element AND 5, the counter 6 of the display, the register 7 of the display, the block 8 of the display of the subject , comparison unit 9, correct reaction extraction circuit 10, error extraction circuit 11, information counter block 12, information register block 13, switch 14, experimenter’s indication block 15, subjective state keyboard 16 of the subject, first element OR 17, bullets 18 experimenter, reactive keyboard unit 19, second element OR 20, element 21 protected from bounce, encoder 22, one-shot front edge 23, third and fourth elements OR 24 and 25, start trigger 26, fifth element OR 27, trigger 28 accounts, the third element And 29, a specialized calculator 30, a generator of 31 clock pulses, a trigger 32 in half, the fourth element And 33, an amplifier 34, a fifth element And 35, a time counter 36, a loudspeaker 37, keys K1-KZ.

The device operates according to the following method. A sequence of sensory stimuli is presented at a given tempo to a test subject in different places of the display unit at a random rate. On the tester's display unit, a reactive button corresponds to each indicator, and at the moment when the sensory stimulus is displayed on the indicator, the subject should press the corresponding reactive button as quickly as possible. The sequence of sensory stimuli delivery is automatically interrupted after the time specified by the experimenter, and

a clear tone is given, indicating that the subject must press a key corresponding to his subjective state at the moment. For temporarily limiting the assessment process, the subject of his state uses short scales (usually 8-point), located on a special scoreboard so that each gradation of the subjective state (for example, the degree of fatigue) corresponds to a separate button. After the test subject presses the button corresponding to his subjective state at the slit, the sound signal stops and the presentation of a sequence of sensory stimuli resumes. After a predetermined length of time, the sequence of sensory stimuli is again interrupted, the subject evaluates his subjective state, and so on. The device automatically records the number of presentations to the subject for a given period of time of sensory stimuli, the number of correct reactions and the number of errors of various kinds (pressing the inappropriate reactive button, skipping the stimulus, being late in response to the stimulus), automatically calculates the average response time and its spread on specified length of time. The analysis of the dynamics of the indicators of the psychological structure of activity and the subjective state of the subject allows a comprehensive assessment of activity in monotonous conditions.

The generator of 1 time marks is tunable with a duration of impulses from 100 to 1000 ms and a pause between them from 0.5 to 5 s. Time counter 36 has a variable conversion factor and provides time delays from 0.5 to W min. The reactive keyboard unit 19 is a set of buttons, each of which is located under the corresponding indicator light of the subject indication display unit 8. The scoreboard and keyboard 16 of the subjective state are a set of keys, each of which corresponds to the gradation of the subjective state on a special scale. The experimenter's console 18 also represents a set of buttons, each of which provides the experimenter’s indication unit 15 with a corresponding indicator of the subject.

The device works as follows.

Before the beginning of the experiment, the experimenter sets the duration and duration of the pulses for generator 1 of time marks, and for the time counter, the time of the experiment phase. When the button K2 is pressed, the elements of the device are reset. When the button K1 is pressed through the third element OR 24, the trigger 26 is set to the state "1, opening the first element AND 2. When the pulse from the time stamp generator 1 is absent.

through the element NO 3, the second element AND 5 is opened, and the information counter 6 is filled from the generator 4 of random pulses. At the moment of appearance of the pulse at the output of the time stamp generator 1, the second element AND 5 through the element NOT 3 closes, fixing the random state of the display counter 6 is performed in the closed state of the second element AND 5. At the same time, the forward forward one-shot 23 records the contents of the counter 6 of the indication in the indication register 7 and in the indication unit 8 of the subject is included a corresponding light indication according to the contents of the indication register 7 and the permitting signal Y. In addition, the signal B is reported by the specialist mu calculator 30 about this piece of information and sets the state of a single trigger 28 bills, exposing the third AND gate 29 through which the generator 31, clock pulses to a specialized calculator 30 are pulses of the test reaction, the time of encoding. Since the trigger 32 times at this time is in the state "O, the fifth element I 35 is open, and the time counter 36 receives a clock frequency from the generator 31 clock pulses, providing an account of the time of the experiment phase. At the moment of the test person's reaction on the block 19 of the reactive keyboard, the second element OR 20 and the bounce protection element 21 produce the signal R, which through the fifth element OR 27 sets the counting trigger 28 to the “O” state, closing the third element 29, which ensures the termination supplying pulses to the specialized calculator 30. Simultaneously with this signal R, the specialized calculator 30 is informed of the end of the piece of information. In addition, at the time of the reaction, information codes are compared to the encoder 22 and the display register 7, and, if the codes are equal, the comparison block 9 generates a signal Z. If this signal appears at the moment when the indication is on (signal Y is equal to one), then the correct response extraction circuit 10 produces a correct response signal in accordance with the function

X z-r-y.

Thus, the correct response extraction circuit 10 can be implemented as a combination with a given boolean function.

If the correct pressing reaction (at the place of presentation of information) occurs after the sensory stimulus disappears (no signal Y), then the signal X is not generated, and the error selection circuit 11 on the output C1 produces a signal in accordance with the Boolean function

C Z-Y-R.

If the reaction of the subject does not occur in accordance with the place of the indication to be turned on, the error extraction circuit 11 produces a signal at the C2 output.

C2 Z-Y-R-V-Z-Y-R Z-R.

If the subject does not perform a motor response to a stimulus in the period before the change in a new stimulus, the OEbibka selection circuit 11 generates a signal on the output of the SOC:

,

where R is the no-response signal during the stimulus presentation cycle, which is formed by the error highlighting circuit 11.

Thus, the error isolation circuit 11 can be implemented in combination type with memory in known Boolean functions.

The signals L, U, C1, C2 and Sz come

0 in block 12 of information counters, where each is counted by its counter, which form block 12.

The stimulus delivery cycles and counting of the test subject's performance continue for a period determined by the time counter 36, which, at the end of the experiment, generates a signal W, which sets the trigger 26 to zero through the fourth circuit OR 25. The first element And 2 closes 0 c, which ensures the termination of the presentation of information to the subject. At the same time, the trigger 32 of the time is set to the state "1, closing the fifth element I 35 and stopping the time counter 36, returning it to its original state. In it

At the same time, the fourth element, AND 33, opens, through which an audio signal is fed to the amplifier 34, and then to the loudspeaker 37. The beep is perceived by the subject and stimulates it.

 answer about your condition using the keypad 16 of the subjective state. The W signal also provides for the rewriting of the current information about the subject's activity at one stage of the experiment from block 12 of information counters into block 13 of registers.

5 information, from where the experimenter from the experimenter’s console 18 side through the switch 14 can call information of interest, either on the digital display or on the printing device of the experimenter’s display unit 15. And the conclusion

0 information can also be carried out at the time of the working stage of the experiment, since the state of the non-counters of the indication-indication block 12, which is currently running, is indicated, and the registers of the information-register registers of the idle mode register 13. The rerun of the experiment stage is carried out either by responding on the keyboard 16 of the subjective state through the first element

OR 17 (short-circuit key in position 1), or at the command of the experimenter from the panel 18 of the experimenter (short-circuit key in position 2).

At the end of each stage of the experiment, the results of statistical processing through the switch 14 can also be output to block 13 of the information registers of the experimenter. Specialized computer 30 calculates: a) the average reaction time of the test person in one step in accordance with the recurrent formula

 + (A i -M i-1),

where i is the tact number of the presentation of information

matsii; - time code of the latent period

on the rd tact;

b) the average deviation of the reaction time from its average value by the recurrent formula

L1 /.

Claims (1)

Invention Formula A device for evaluating the efficiency of operator activity under monotonic conditions, containing a time stamp generator, a comparison unit, display units and time counters, characterized in that, in order to expand the functionality of the device by automated analysis of the dynamics of human performance indicators in monotonous conditions, the third element OR, the start trigger, the first AND element, the NOT element, the second AND element, the display counter, the display register, the sequential the connected allocation scheme of the correct response, the information counter block, the information register block, the switch and the experimenter's indication block, the fourth OR element, the fifth OR element, the count trigger, the third And element, the specialized calculator, the information register block, and the last one - the timed trigger, the fourth AND element, the amplifier and the loudspeaker, the reactive keyboard unit connected in series, the second OR element, the bounce protection element and the extension circuit laziness, error, and encoder, gene5 0 five about g random pulsator, front-edge one-shot, test subject display unit, subjective state keyboard, first OR element, experimenter's console, fifth AND element and time counter, the output of the time stamp generator connected to the front-edge single-vibrator input, output which is connected to the first inputs of the information register, the error isolation circuit, the account trigger and the specialized calculator, the third input of which is connected to the second input of the fifth OR circuit, the output of the rake protection element zg, the second input of the correct response selection circuit, the third input of which is connected to the output of the first circuit AND, the input of the one-shot front edge, the input of the element NOT, the first input of the test indication unit and the fifth input of the information counter block, the second, third and fourth inputs of which are connected with the corresponding outputs of the error isolation circuit, the second input of which is connected to the input of the correct response selection circuit and the output of the comparison unit, the first group of inputs of which is connected to the outputs of the display register and the inputs the display of the test subject, and the second group of inputs is connected to the outputs of the encoder, whose inputs are connected to the outputs of the reactive keyboard unit and the inputs of the second OR element, and the output of the clock generator is connected to the first inputs of the third, fourth and fifth elements, the output of the last of which the time counter is connected to the first input of the information register block, the first input of the fourth OR circuit, and the first setup input of the half time trigger, the direct output is connected to the second input of the fourth AND element, and the inver The output is connected to the second input of the fifth element AND, and the second installation input is connected to the output of the third element OR, one input of which is connected to the common bus through the first key K, and the second input through the short-circuit key to the output of the first element OR, whose group of inputs connected to the subjective state keyboard outputs and the fourth group of inputs of the information register block, the second contact of the third key is connected to one output of the experimenter's console, the second group of outputs of which is connected to the second group of inputs of the switch, and the second a fourth input of the OR element through the second switch is connected to the common bus. FIG. 2