RU1798809C - Device for checking physiological characteristic of operators of automated control systems - Google Patents

Abstract

A device for monitoring the psychophysiological characteristics of operators of automated control systems relates to engineering psychological research, in particular to human-machine systems, and can be used for psychological engineering assessment of control panels for technical objects and technological processes. The purpose of the invention is to expand the didactic capabilities of the device. The device comprises a teacher’s console 1, an operator’s console 2, an optimal tension zone registration unit 3, a latent excitation period recorder 4, and an operator stress recorder 5. The introduction of a motion recording unit 6 containing two pulse generators 34 and 35, 38 I elements, a decoder 37, and a counter 36 makes it possible to evaluate the stereotype character of the operator’s activity. 35-36-37-38-39. 34-38.1 ill. Yo

Description

The invention relates to engineering-psychological research techniques, in particular to human-machine systems, and can be used for psychological-engineering evaluation of control panels for technical objects and technological processes. It is an improvement of the known simulator described in ed. Rv. USSR No. 982065.

The aim of the additional 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 the stereotype of the operator's algorithm of activity.

The drawing shows a functional diagram of the device.

The device for monitoring the psychological characteristics of operators of automated control systems includes a teacher’s console 1, the output of which is connected to the operator’s console 2, the output of the operator’s console 2 is connected to the input of the operator’s movement recording unit b, and the optimal tension zone registration unit 3 is connected to the output console 2, the recorder 4 has a hidden excitation period, the input and one output of which are connected to the console 2 of the operator, and the other output is to one input of the recorder 5 intense actions of the operator, and the input of the unit registering movements other recorder 5 inputs connected to the output 1 and the remote unit 3 outputs the optimal registration zone field strength, and outputs recorder 5 - 1 with remote control, unit b outputs connected to register movements operations indicators 40 and the indicator 41 groups.

The console 1 contains a READY button 9, the voltage display 7 is more than optimal, the voltage display 8 is less than optimal.

The remote control 2 contains the investigated control panel 11, the output of which is connected to the input of block 6, the operator 12, on which the contacting electrodes are installed - sensor 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 unit 4, and the READY banner connected to the console 1.

Block 3 registration of the optimal tension zone contains a series-connected amplifier 17, element And 18, the second input of which is connected to the output of the generator 19 ,. 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 a serially connected ultrasonic frequency signal generator 23 connected to an emitter 14, a mixer 24, the second input of which is connected to the output of the receiver through a bandpass filter 25 and an amplifier 26

15, an analog converter 27 and a threshold element 28, the output of which is connected to blocks 5 and 6.

The recorder 5 stressful actions of the operator contains a trigger 29, zero

5, the input of which is connected to the output of the threshold element 28, single - 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 of the first and second elements And 30 and 31, the first inputs 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 original

5 the state of which is connected to the READY button, and the outputs are connected to the inputs of the scoreboard 7 and 8 of console 1, respectively.

Block 6 registration of movements of the operator contains serially connected

0 pulse shaper 34, the input of which is the first input of the block connected to the output of the recorder 4 of the hidden excitation period, elements And 38-1, 38-2 ... 38-p, the second inputs of which are connected

5 with the corresponding outputs of the decoder 37, the inputs of which are connected by the counter 36 of the total number of groups of movements of the operator, and counters 39-1 ... 39 of the number of operations (movements) in the group, the outputs of which are the first outputs of the block connected with indicators 40 of operations — single-bit, as well as a pulse generator 35 and a counter 36 connected to each other, the outputs of the counter 36 are connected to the corresponding inputs of the decoder 37, in addition, “this is the second output of the block connected to the corresponding inputs of the UPP 41, and the input of the driver .35 pulse0 - the second input of the unit connected to the output of the control panel 11 of the control panel 2 of the operator.

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. During the training, the control information is received by the operator from the board of the control panel 11 and is considered in the form of logical conditions that determine the nature of

operator movements. When analyzing the operator’s activities, these movements are considered as elementary operations and are grouped after each logical condition (signal). The device estimates the temporal characteristics of the operator’s movements and allows you to determine the coefficient of stereotypic activity algorithm

.

where Ј0 | the number of operations (movements) in the 1st group;

Vj is the number of groups with i-operations;

m is the total number of groups;

n - the total number of groups with a different number of operations.

The device operates as follows.

By means of a banner 16 READY, the operator is presented with a signal about the start of tests, according to which he stops all movement. Then, the working situation is formed on the control panel 11 under control of the technical object using the display available on this panel. The operator, in accordance with the current situation, answers (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 start of the response.

In addition, the operator’s mobility is also continuously monitored by measuring the time intervals required for the operator to perform movements. This allows you to evaluate the load factor and the 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 is determined and set at the input of the threshold element 28, which prevents false triggering from convection air flows, temperature fluctuations in the room, etc.

Sensors 13 (contacting electrodes) are mounted on the body (arm) of operator 12 and trigger thresholds are set. Rows 21 and 22, which determine the maximum and minimum zones corresponding to the intensity of the response actions of the operator 12 participating in the experiment. Triggers 21 and 22 are reset when the power is turned on, and generators 19 and 23 are simultaneously started.

Remote 1 is located in an adjacent room.

0 When you press the 9 READY button on the remote control 1, the signal from its output lights up while the 9 button is pressed, the 16 READY banner (installed in front of the operator) sets the counters 32 and 33 to

5, the initial state and, entering the single input of the trigger 29, puts it in a state in which a logical unit appears at its direct output. From the output of trigger 29, the unit enters the elements And 30 and 31 and opens them.

The operator, having received the READY signal, stops all movements and is ready to work on the console 11.

After pressing the button 9 READY5 NOTE, the manager immediately remotely submits to the remote control 11 of the technical object the generated working situation, which is displayed from that moment on the remote control 11 by means of

0 mute indicator. The operator, depending on the situation, responds in accordance with a previously learned instruction using the control of this console.

From the moment the signal GO5 is received, the DURANCE is continuously monitored by the intensity of the actions of the operator 12 by means of the sensors 13. The signal taken from the sensors 13 (contacting electrodes) is proportional to the value

0, the intensity of the operator’s response, enters block 3 at the input of amplifier 17 and, amplified, is fed to the first input of element And 18, to the second input of which pulses are supplied from the 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 triggers 21 and 22, the thresholds of which are 0 pre-set to the maximum and minimum and determine the zone corresponding to the optimal voltage action operator. When changing the zone up

5 trigger 21 is triggered, towards the side it has decreased - trigger 22.

If the signal at the inputs of the triggers 21 and 22 is higher than the set level, then the output of the trigger 21 is a pulse, which is recorded through the open element And 30

to the counter 32. If the signal at the inputs of the triggers 21 and 22 is less than the set level, then a pulse appears at the output of the trigger 22, which is recorded through the open element And 31 into the counter 33. The triggers 21 are set to the initial state by the leading edges of the pulses of the generator 19. .

Continuous monitoring of the intensity of operator actions lasts from the moment the READY signal arrives until the operator begins to move in response to the response, i.e. the latent time period of excitation is controlled when the operator / does not make any movements, thinks about the situation that has developed on the console 11.

The latent excitation period is measured as follows.

Generator 23 using a radiator. 14 generates acoustic vibrations of the same frequency directed to the remote control 11c by the operator 12. The reflected vibrations are transmitted to the receiver 15, where they are converted into electric vibrations, which, through the amplifier 26, the band-pass filter 25 go to the second input of the mixer 24, the ultrasonic vibrations are fed to its first input frequency directly from the generator 23.

From the moment of receipt of the signal, READY from the console 1 of the operator 12 maintains a fixed position, and there is no signal at the output of the mixer 24. As soon as the operator begins to move, the oscillation received by the receiver 15 changes 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 intensity of the actions performed by the operator is stopped. At the inverse output of trigger 29, a logical unit appears that illuminates the scoreboard 7 and 8 on the remote control 1 with the results of experiments calculated by the counters 32 and 33. The score 7 displays the number of times at which the tension during operator response is more than optimal, on the scoreboard 8 is less

optimal for one working situation on the remote control 11.

The stereotype of the operator’s activity algorithm is measured during the decision.

remote control tasks as follows.

During the movements of the operator, the difference frequency appears at the output of the mixer 24, which is converted at the output of the analog converter 27 and the voltage is supplied through the threshold element 28 to the first input of the motion registration unit b to the pulse shaper 34. At the output of the shaper, pulses appear in which each front edge coincides with the beginning of the movement, and each rear edge coincides with the end of the operator's movement.

At the same time, signals of the task being performed, coming to the operator from the board

0 of the control panel 11 in the form of logical conditions also arrive at the input of the pulse generator 35, at the output of which pulses are generated at the moments of the appearance of a new signal (logical condition)

5 in front of the operator on the board of the control panel 11. The appearance of a pulse at the output of the pulse generator 35 means the beginning of a new group of operations (movements) of the operator behind the control panel 11.

0 Pulses from the output of the shaper 35 pulses are fed to the input of the counter 36 of the total number of groups. The code from the output of the counter 36 of the total number of groups is fed to the input of the indicator of groups 42, where

5 the number of groups of movements of the operator. In addition, the code from the output of the counter 36 of the total number of groups goes to the inputs of the decoder 37, which connects the counters of the number of operations (movements) in the group 390 1, 39-2 ... 39-p through the corresponding elements And 38-1, 38 -2 ... 38-p.

At the same time, pulses from the output of the pulse generator 34 are supplied to all AND 38-1, 38-2 ... 38-p circuits, the order of opening of which determines the signal coming to the second input of the corresponding And 38-1, 38-2 circuit. .. 38-p from the decoder 37, depending on the sequence number of the group of movements (operations) of the operator. Across

0 one of the circuits I 38-1, 38-2 .... 38-p, according to the sequence determined by the decoder 37, the pulses are fed to the counting input of one of the counters 39-1, 39-2 ... 39-p operations (movements) in the group, where it counts 5 s the number of operations (movements) in this group, and is displayed on the operation indicators 41-1, 41-2 ... 41gp, which are connected by their inputs to the outputs of the counters 39-1, 39-2. .. 39-p. Counters 36 and 39 ... p are set to the initial state at the start of operation (the initialization circuit is not shown in the diagram).

Upon completion of work, the group indicator and operation indicators will show the total number of groups and for each group the number of operations (movements) in it.

Using the invention, it is possible to evaluate the algorithms of the operators according to their sensorimotor activity, to conduct a comparative assessment of the results obtained with optimal values characterizing the maximum efficiency of the activity; reduce time spent on measuring sensorimotor indicators, operator work 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 a better development of recommendations aimed at preventing or reducing premature operator fatigue, preventing the occurrence of psychophysiological stress, as well as the appearance of erroneous actions. The invention allows to develop measures for the organization of individual adaptation when the operator addresses the controls located on the remote control.

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

century-machine based on recording and displaying the characteristics of the operator’s movements.

Claims (1)

The claims A device for monitoring the psychophysiological characteristics of operators of automated control systems by ed. St. No. 982065, characterized in that, in order to expand the didactic capabilities of the device, it includes an operator movement registration unit containing the first and second pulse shapers, the inputs of which are connected to the second output of the hidden excitation period recorder and the third output of the operator console, a group of counters and a counter the outputs of which are connected to additional inputs of the teacher's console, a group of AND elements and a decoder, the inputs of which are connected to the outputs of the counter, the input of which is connected to the output th first pulse shaper, a second pulse shaper output is connected to first inputs of AND gates group whose second inputs are connected to outputs of the decoder, and outputs connected to inputs of respective counters group ..