SU734792A1 - Apparatus for examining operator's skills - Google Patents

Description

(54) DEVICE FOR CONTROL OF SKILLS OF OPERATORS

one

The invention relates to automation and computing and can be used to teach and control students' knowledge.

Devices for controlling operator skills are known, comprising a time counter connected to a time setting unit, a control unit connected to a program setting unit connected to a display unit, and a recording unit 1, and 2.

Closest to the invention is a device for controlling operator skills, containing sequentially connected control units, program settings and indications, a comparison unit, the first input of which is connected to the unit for generating reference responses, the second to the program setting unit, and its output with a time counter, a time setting block, connected to both the program control and setting blocks, and a registration block 3.

The disadvantage of these devices is that they do not allow precise control of operator skills.

The purpose of the invention is to improve the accuracy of control of operator skills.

This goal is achieved by the fact that the device contains a functional converter, a summation unit, an error weight determination unit, a unit for generating time standards, the inputs of which are connected to the program task and comparison blocks, and an output to the functional converter connected to the time counter, whose inputs are connected to the program setting and comparison blocks, and the output to the functional converter connected to the time counter and the summation block, which connected to. units registration, specifying timing and mismatch error weights determining unit connected to the program setting unit, and comparing.

The drawing shows a block diagram of the device.

20The device consists of a block of 1 task

programs that contain a set of programs that correspond to the tasks being worked out. Each program is determined by a sequence of information signals and

their parameters. The input of the program block is associated with the first output of the 2 task time setting block, which specifies the end time of the signals, i.e., the rate of change of information presented to the operator 3 on the indication block 4, the input of which is connected to the first output of the program 1 block. The data displayed on the information panel determines the nature of the activity of the operator, who forms his executive actions with the help of the block 5 forming reference responses. The second output of the time parameter setting unit 2, which sets the time at which the signals begin to be exposed, is connected to the counter input of 6 time parameters for its start. The third output of the block 2 time parameters, fixing the end of the sequence of presented signals, is connected to the first input of the summation unit 7, the second input of which is connected to the functional converter 8, the third input to the error determination block 9, and the output 10 . The two inputs of the comparison unit 11, which serves to control the sequence of actions and the accuracy of parameter measurements, are connected to the unit 5 for generating reference responses and the unit 1 for setting the program. The first output of the comparator unit 11 is connected to the unit 12 for forming temporal parameters, in which the standard values of the duration of individual operations are stored, and with the counter 6 time parameters for stopping it. The second output of the comparator unit 11 is connected to the error weight determination unit 9. The inputs of the functional Converter 8 is connected to the outputs of the counter 6 time parameters and the block of 12 standards of time parameters. The second output of the program setting block 1 is connected to the error weight determination unit 9 and the time parameter block 12 for adjusting them to the selected program. The inputs of program set I of programm. And the block 2 of setting time parameters are connected to control unit 13.

The device works as follows.

The training manager selects and assigns a set of 3 signals presented to the operator by entering through the control block 13 into block 1 the program number of the training program, and block 2 of the time parameters — the values of the signal durations. The sequence of these signals is generated by the program setting unit 1 in accordance with the program number entered into it and recorded on the display unit 4. The change of signals of the training sequence is carried out according to the signals of the "end of exposure" coming from the block of setting time parameters. Operator Response Alerts

3, implemented using the response template forming unit 5, is fed to the input of the comparator unit 11 in order to verify the correctness of the sequence of operator actions and to control the accuracy of the measurement of the parameters of the presented signals. The true values of the measured parameters are fed to the input of the comparison unit 11 from the output of the program setting unit 1. If the next action is as required and the measurement accuracy is reached

Within acceptable limits, it is considered that the action was performed by the operator correctly. In this case, at the first output of the comparator unit 11, a signal arrives at the input of the unit of 12 time standards

Parameters and used, in addition, to stop the counter 6 time parameters, which is triggered by the signal "start of exposure, coming from the block 2 setting time parameters. Thus, in the counter 6 time parameters

0 determines the reaction time of the operator with a properly performed action, which enters the functional converter 8, which also receives the corresponding standard value selected in the block of 12 time parameters. Functional Converter 8 calculates the value of the learning function.

about -cc {i / -t / W)

but

where a is the numerical coefficient;

tt-time spent by the operator on the correct execution of the i-ro action;

tiK is the standard value of the i-ro action time.

With the output of the functional Converter 8 value a; enters the input of block 7 summation. If the operator fails to meet the required sequence of actions, or is exceeded

if the measurement error is permissible, or he didn’t manage to perform the action before the next signal arrived, i.e. an error was made, a signal appears at the second output of the comparator unit 11. This signal is fed to the input of the scale determination unit 9

errors, where the weight of the error corresponding to the incorrectly performed action is selected. In this case, the performance function is not calculated, and in block 7, instead of it, the value of the selected error weight is received. The weights of the errors are less than the values of the success functions when performing an action in a standard time, i.e., units, and decrease with an increase in the magnitude of errors, which makes it possible to take into account the strength of their negative influence when making the assessment. In block 7

the values of the success functions calculated in the functional converter, and the error weights selected in block 9 are successively summed up and simultaneously issued to the registration block 10 as private

estimates of operator activity. In addition, in block 7, the number of actions performed by the operator is counted as the total number of signals from converter 8 and block 9. When the signal from the block 2 times the end of the sequence, the sum of the individual estimates is divided by the number of actions performed. The value thus obtained in block 7 is taken as a generalized estimate of the operator’s performance in solving a certain problem and is given to block 10 of registration.

Thus, unlike the known ones, the proposed device automatically monitors the actions of the training operator for all major indicators of its activity (compliance of the actions of the operator of the reference sequence, accuracy of signal parameters measurements, and time for performing actions) and produces a generalized estimate that takes into account these indicators. In addition, the device makes it possible to respond to differences in the significance of errors by reducing the value of the estimate when an error is made by an amount the larger, the rougher the error. This increases the degree of confidence in the assessment, which makes it possible to increase the effectiveness of training in comparison with known devices by reducing by 20-30% the number of trainings necessary to achieve the required level of training.

The set of private assessments allows the head of training to carry out a detailed analysis of the process of solving the task by the operator, and according to the generalized assessment he can judge the level of training of the learner to manage the serviced system. An increase in the magnitude of the estimate characterizes an increase in the operator’s speed, a decrease in the number of errors he makes and a decrease in the significance of these errors.

The proposed device enables the manager to implement optimal control of the learning process, for example, by reasonably changing the rate of presentation and complexity of the signals of the training 5 sequence.

Claims (3)

Invention Formula A device for controlling operator skills, containing sequentially connected control units, program settings and indications, a comparison unit, the first input of which is connected to the unit for generating reference responses, the second is connected to the program setting unit, and its output is connected to a time counter, the time setting unit parameters, connected to the control and task units of the program, and the registration unit, characterized in that, in order to increase the accuracy of the control of the skills of the operators, it contains a functional transformation the accumulator, the summation unit, the error weights determination unit and the temporal parameter formation unit, the inputs of which are connected to the program setting and comparison units, and the output to the functional converter connected to the time counter and the summation unit, which are time parameters and an error weight determination unit connected to the program setting and comparison blocks. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 551689, cl. G 09 B 7/02, 16.10.75. 2. USSR author's certificate No. 407382, cl. G 09 B 9/00, 09.28.71. 3. US patent No. 3748754, cl. 35-48, 07.31.75. 12