RU1809457C - Device for controlling psychological characteristics of automatic control system operators - Google Patents

Abstract

The invention also relates to female psychological research, in particular to human-machine systems, and can be used for psychological engineering evaluation of control panels for technical objects and technological processes. The purpose of the invention is to expand the didactic capabilities of the device by providing an assessment of the interaction of the operator and control systems by measuring load indicators and the monotony of operator activity. The device comprises a remote control, 1 teacher, 2 operator remote controls, 3 registrations of the optimal stress zone, 4 hidden excitation period recorder, 5 operator intense stress recorder. New is the introduction of a motion recording unit 6 comprising a pulse generator 34, an AND element 35, two time slot counters 36 and 38, and a time stamp generator 37. 1 ill.

Description

The invention relates to engineering and psychological research, in particular to human-machine systems, and can be used for the psychological and engineering evaluation of control panels for technical objects and technological processes.

The aim of the invention is to expand the didactic capabilities of the device by providing an assessment of the interaction of the operator and control systems by measuring load indicators and the monotony of operator activity.

The drawing 1 shows a functional diagram of the device ..

A device for monitoring the psychophysiological characteristics of operators of automated control systems includes a teacher’s panel 1, the output of which is connected to the operator’s panel 2, an optimal voltage zone registration unit 3 connected to the panel 2 output, a hidden excitation period recorder 4, the input and one output of which are connected to the panel 2 operators, and the other output - to one input of the recorder 5 intense actions of the operator, and the input of the block b registration of movements, the other inputs of the recorder 5. Connected to the output pu ice 1 and the outputs of the unit 3 for recording the optimal stress zone; and the outputs of the recorder 5 with pulse 1, the outputs of the block 6 of the registration of movements are connected to the console 1.

The console 1 contains a Ready button 9, a voltage display 7 is more than optimal, a voltage display 8 is less than optimal, and a time display 10 of the operator’s movements.

The remote control 2 contains the investigated control panel 11, the operator 12, on which the contacting electrodes are installed — sensors 13, the outputs of which are connected to the input of block 3, the emitter 14 and receiver 15, the input of one and the output of the other are connected to block 4, and the transparency 16 is ready, connected to the remote control 1.

Block 3 registration of the optimal voltage zone contains a series-connected amplifier 17, element And 18, the second input of which is connected to the output of the generator 19, an integrator 20 and Schmitt triggers 21 and 22, the second combined inputs of which are connected to the generator 19, and the outputs to block 5 .

The latent excitation period recorder 4 comprises in series an ultrasonic frequency signal generator 23 connected to

emitter 14, mixer 24, the second input of which through a bandpass filter 25 and amplifier 26 is connected to the output of the receiver 15, an analog converter 27 and a threshold element 28, the output of which is connected to the block 5.

The recorder 5 of the operator’s intense actions contains an RS-trigger 29, the zero input of which is connected to the output of the threshold element 28, the single one - with the button 9 Ready, the inverse output - with the second inputs of the board 7 and 8 of the console 1, and the direct output - with the second inputs the first and second elements And 30 and 31, the first inputs of which are connected to the outputs of the triggers 21 and 22 of block 3, respectively, and the outputs to the control inputs of the counters 32 and 33, respectively, the installation inputs to the initial state of which are connected to the Ready button 9, and outputs - with inputs of scoreboard 7 and 8 p lta 1 respectively.

The motion recording unit 6 contains a pulse shaper 34 connected in series, an And 35 element, an operator mobility time counter 36, the output of which is connected to the board 10 of the console 1, a time stamp generator 37 is connected to the second input of the And 35 element and the input of the exercise time counter 38, the output which is connected to the second input of the board 10 of the console 1, and the input of the pulse generator 34 is connected to the recorder 4 of the hidden excitation period.

The essence of the invention lies in the fact that the effective activity of the operator is characterized by optimal values of its sensorimotor indices. The device estimates the temporal characteristics of the operator’s movements and allows you to determine the load factors of the monotonicity of the operator’s activity using the formulas

K3

1

n tr i

Km

1P

 - g- 2 t ..

mp (

where Ttr is the training time;

ti is the time taken to complete an individual operation in the algorithm;

n is the number of individual operations in the algorithm.

The device operates as follows.

By means of a transparency 16, the operator is presented with a signal that a test has begun, according to which he stops all movement. Then, on the studied control panel 11 for controlling the technical object, a working situation is formed using the display available on this panel. The operator responds according to the current situation (according to the instructions) using the controls of the same panel. At the same time, the intensity of the operator’s actions is continuously monitored by measuring the electrical resistance of the skin, which is taken into account until the response is commenced.

In addition, the operator’s mobility is also continuously monitored by measuring the time intervals required for the operator to perform movements. This allows us to evaluate the load and monotony of the operator’s activity and compare them with the optimal values corresponding to the maximum efficiency of the activity.

In preparing the device for operation, the emitter 14 and the receiver 15 are set so that the ultrasonic acoustic vibrations of the emitter 14 are directed to the remote control 11c by the operator 12. If there are no movements, the response threshold at the input of the threshold element 28 is determined and set, which prevents false alarms from convection air flows, temperature fluctuations in the room, etc.

Sensors 13 (contacting electrodes) of the body (arm) of the operator 12 are installed and thresholds are set for the inputs a and / of the triggers 21 and 22, which determine the maximum and minimum zone corresponding to the intensity of the response actions of the operator 12 involved in experiment. Triggers 21 and 22 are reset when the power is turned on, and generator 19 and generator 23 are simultaneously started.

Remote 1 is located in an adjacent room.

When you press the 9 Ready button at the time ti on the remote control 1, the signal from its output lights up for the time you press the 9 button; the 16 Ready (installed in front of the operator), sets the counters 32 and 33 to the initial state and, entering the single input of the trigger 29, translates it to a state in which a logical unit appears at its direct output. From the output of trigger 29, the unit enters elements 30 and 31 and opens them.

The operator, having received the Ready signal, stops all movements and is ready to work on the remote control 11.

After pressing the button 9 Preparedness 5, the manager immediately remotely submits to the remote control 11 of the technical object the generated working situation, which is displayed from the moment ta on the remote control 11, using the indicators available on it. The operator, depending on the situation, responds in accordance with the previously studied instructions using the controls of this console.

From the moment ti of the T5 signal arrives, the intensity of the actions of the operator 12 is continuously monitored by means of the sensors 13. The signal taken from the sensors 13 (contacting electrodes) is proportional to

0, the response intensity of the operator enters block 3 at the input of amplifier 17 and the amplified signal is supplied to the first input of element And 18, the second input of which receives pulses from a generator 19, which sets the signal integration time. From the output of element And 18, the signal is fed to the input of the integrator 20. The voltage taken from the output of the integrator 20 is applied to the inputs of the trigger 21 and 22, the thresholds of which are 0 predefined by the maximum and minimum inputs and determine the zone corresponding to the optimal voltage response by the operator. At

5, when the zone is changed, the trigger 21 is triggered, and the trigger 22 is decreased.

If the signal at the inputs of triggers 21 and 22. If the signal at the inputs of the triggers 21 and 22 is less than the set level, then the output of the trigger 22 will receive a pulse, which through the open element And 31 is recorded in the counter 33. In the initial state, the triggers 21 and 22 are set by the leading edges of the pulses of the generator 19. Continuous monitoring

The operator action duration lasts from the moment ti (the signal is ready) to ta (the operator begins to move), associated with the response, i.e. latent time period is controlled

5 excitation, when the operator, without making any movements, thinks about the situation., Prevailing on the remote control 11.

The latent excitation period is measured as follows.

The generator 23 with the help of the emitter 14 generates acoustic vibrations of the same frequency, directed to the remote control 11 with the operator 12. The reflected vibrations arrive at the receiver 15, where they are converted into electrical vibrations, which through the amplifier 26, the bandpass filter 25 go to the second input of the mixer 24, on the first input of which vibrations of ultrasonic frequency are supplied directly from the generator 23.

From the moment ti of the ready signal from the console 1, the operator 12 remains stationary and there is no signal at the output of the mixer 24. As soon as the operator begins to move ta, the oscillations received by the receiver 15 change in frequency (Doppler effect), and the difference frequency appears at the output of the mixer 24, which the converter 27 converts to voltage. When this voltage exceeds the threshold of operation of the element 28, a signal appears at the output of the latter, which, when it arrives at the zero input of trigger 29, restores it to its initial state. At the inputs of the elements And 30 and 31 connected to the direct output of the trigger 29, a logical zero appears, which prohibits the passage of pulses through these elements to the counters 32 and 33, i.e. the accounting of the intensity of the actions performed by the operator is terminated. At the inverted output of the trigger, a logical unit appears, which illuminates the scoreboard 7 and 8 on the remote control 1 with the experimental results counted by counters 32 and 33. The scoreboard 7 displays the number of times at which the tension during the response of the operator is more than optimal, on the scoreboard 8 - less than optimal, for one working situation on the remote control 11.

The mobility of the operator is measured while he is behind the workplace as follows.

When the operator moves, the difference frequency appears at the output of the mixer 24, which is converted at the output of the analog converter 27 to a voltage and fed through the threshold element 28 to the input of the motion recording unit 6 to a pulse shaper 34. At the output of the shaper, pulses appear in which each leading edge coincides with the beginning of the movement, and each falling edge coincides with the end of the movement of the operator.

The time of movements is fixed in the counter 36 using pulses that are supplied to its counter input through the open element And 35 from the generator 37 time stamps. The timestamp generator 37 is started at the same time as the operator begins to execute a predetermined algorithm of actions. Pulses from its output also go to the counting input of the counter 38, where the total time of the simulator is recorded. Counters 36 and 38 are reset.

state when the device is turned on. Installation circuits are not shown in the diagram. At the end of the work, the total time of the training and the total time the operator was in motion will be displayed on the scoreboard 10.

Using the invention, it is possible to evaluate the algorithm of operation of operators by their sensorimotor activity. To carry out a comparative assessment of the results obtained with optimal values characterizing the maximum efficiency of the activity. Reduce the time spent on measuring sensorimotor performance of the operator by 40-60 times.

To improve the quality of engineering and psychological assessment of the workplace of an operator of any type. It contributes to better development of recommendations aimed at not preventing or reducing premature fatigue.

operator, preventing the occurrence of psychophysiological stress in him, as well as the appearance of erroneous actions. The invention allows to develop measures for the organization of individual adaptation

when the operator contacts the controls located on the remote control.

The invention improves the efficiency of operator activities in human-machine systems.

Claims (1)

The claims A device for monitoring the psychophysiological characteristics of operators of automated control systems by ed. St. No. 982065, regarding the fact that, in order to expand the didactic capabilities of the device, an operator movement registration unit is introduced into it, containing a pulse shaper whose input is connected to the first output a hidden excitation period recorder, and the output is connected to the first input of the And element, the second input of which is connected to the output of the pulse generator and the counting input of the first counter, and the output is connected with the counting input of the second counter, the outputs of the first and second counters are connected to additional inputs of the teacher's console.