SU1251155A2 - Training system of radiotelegraph operators - Google Patents

Abstract

The invention relates to the field of automation and computer technology and can be used in the training of radio telegraph operators on the key. The aim of the invention is to expand the didactic capabilities of the simulator by controlling the increase in speed of operation. The simulator contains a code generator, an electroacoustic converter, two counters, two pulse drivers, a memory unit, an operator response input unit, an adder, an integrator, a generator, an indicator, an operation speed control circuit, which is an adaptive rate control unit for pulse shaper, deflator and counter. 2 Il. You sd ate ISJ

Description

The invention relates to automation and computing, can be used in teaching radio telegraph operators to transmit on the key, and is an improvement of the invention according to the author. St. No. 947904.

The purpose of the invention is to expand the didactic capabilities of the simulator by controlling the increase in the speed of the simulator.

FIG. 1 shows a diagram of the simulator; in fig. 2 - diagram of pulse shapers.

Wireless telegraph simulator, contains 1 code generator (automatic Morse code sensor), electro-acoustic converter 2 (headphones), 3 write address counter, 4 pulse generator (dash) memory block 5, read address counter 6, operator response input block 7 ( telegraph key), shaper 8 pulses (dashes), modulo two adder 9, integrator 10, linearly varying voltage generator 11, error indicator 12 and adaptive rate control unit 13, made in the form of forma 14 l of pulses (the time interval error-free operation), the counter 15 and the decoder 16.

The formers 4, 8, and 14 consist of a series-connected integrator 17 of the generator 18, an AND element 19, and a counter 20, to the other input of which the source of the reset signals is connected.

The student listens to the signals (signs) from the imaging unit 1, which are fed to the electroacoustic converter 2, and transmit them at the key with the same speed. The rate of presentation of signals (signs) smoothly increases (increases according to a given linear law), which, in turn, causes an increase in the transfer rate on the key for the learner.

If the trainee admits errors during transmission, the increase in speed slows down, and when the error frequency reaches the set level, the indicator 12 lights up. The learner stops transmitting on the key, concentrates, and then (according to the instructions) starts working again after a certain period of time.

If a student does not make mistakes in his work, each time interval of an error-free transmission gives an additional increment to the angle of the linear increase in speed, which leads to an increase in the rate of presentation of signs. When the first error appears, the angle of inclination of the direct increase in speed takes the initial value, which was set at the beginning of the exercise.

The device works as follows.

When turned on, block 5 and counters 3 and 6 are reset. By pressing a button (not shown), the generator 11 of the linearly variable

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voltage, and from the imaging unit 1 through the electro-acoustic transducer 2, the telegraph signs are presented to the student. At the same time, these characters arrive at counter 3, where the address code is written for writing to block 5. In block 5, the logical zero corresponds to a point, the logical one is a dash. Elements of telegraph signs are recognized by shaper 4, the pulse at the output of which is allowing for recording a logical unit in block 5.

The trainee immediately transmits the received telegraph signs to the key of block 7. The signs generated by the learner go to shaper 8 and to counter 6. Counter 6 provides sequential reading from block 5 also successively written to it from shaper 1 of character elements, i.e. pulses corresponding to the dash element, which goes to the adder 9 to detect 0 transmission errors. The other input of the adder 9 receives the pulses corresponding to the dash element from the imaging unit 8, formed by the student on the key of block 7. If the learner plays the received signals on the key of block 7 without errors, there will be no pulses at the output of the adder 9.

The generator 11 controls the change of the symbol rate, which gradually increases. The slew rate at the beginning of the work is preset by selecting the parameters of the generator 11.

If the student made a mistake, the output of the adder 9 is a pulse that enters the integrator (low-pass filter) 10, the output of which has a constant component proportional to the frequency of the errors. The value of this constant, affecting the input of the generator 11, changes its parameters, thereby regulating (decreasing) the rate of increase of the transmission of characters from the former 1. 0 When the voltage at the output of the integrator 10 exceeds a predetermined threshold value (the error rate unacceptably large) indicator 12 lights up, which means the end of the exercise. In this case, the student stops transferring to the key and, after the necessary interruption, starts training again.

Simultaneously generated by the students, the characters arrive at the input of the former 14, at the output of which, at a predetermined time interval, a pulse is generated in the case of the student’s error-free operation, i.e. during this period of time, not a single pulse from the adder 9 arrives at its second installation input. The counter 15 is changed to "1, and at 55 the first output of the decoder 16 a pulse appears which, on entering the input of the generator 11, changes its parameters (the time is controlled by the driving circuit of the charging circuit

0

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generator 11), i.e., the slope of the linear growth of the signal at the output of generator 11 increases.

If the student further does not make mistakes in his work, each time interval of error-free operation, determined by shaper 14, similarly gives an additional increment to the angle of linear growth of the signal at the output of the generator 11 (increase in the increase of the signal at the output of the shaper 1).

In the event of an error, i.e., pulses at the output of the adder 9, the driver 14 and the counter 15 are reset, the angle of inclination of the linear growth of the signal at the output of the generator 11 also takes the initial value. Further, the operation of the simulator is repeated.

Shapers 4 and 8 provide the selection of the elements of the dash mark as follows.

The signal corresponding to the Morse code symbol enters integrator 17, the output of which is a constant component. This voltage controls the frequency of the oscillator 18, which is proportional to the rate of transmission of the Morse code characters. The pulses from the generator 18 are fed to one input of the element I 19, to the other input of which are transmitted pulses of the Morse code. The output element And 19 is connected to the counter 20, which counts the number of pulses received from the generator 18 in time equal to the duration of the element of the transmitted sign of the Morse code. When counter 20 overflows, an overflow pulse appears at its output, indicating the presence of a dash in the transmitted Morse code sign. Counter 20 is set to

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the initial state of the trailing edge of each transmitted element of the mark.

The use of the invention makes it possible to most fully implement the adaptive learning algorithm, in which the rate of growth of presentation of signs adapts to the subjective speed of error-free perception of signs, depending on the learner’s installation, his training, psychophysiological state, etc.

10, an increase in the efficiency of learning is achieved by additionally controlling the characteristics of the psychological contour of the purposeful regulation of the radio telegraph operator's activity under changing conditions of activity. Thus, the invention provides a reduction in the timing of the preparation of radio telegraphists.

Claims (1)

Invention Formula Wireless telegraph simulator by aut. St. No. 947904, characterized in that, in order to expand the didactic capabilities of the simulator, an adaptive rate control presentation module is introduced into it characters containing the third pulse generator, the first and second inputs of which are connected to the outputs of the first pulse generator and the adder, respectively, the fourth counter, the first and second inputs of which are connected to the outputs of the third pulse generator and the adder, respectively, and the descrambler, whose inputs are connected to the corresponding outputs of the counter , and outputs - with the corresponding inputs of the group of inputs of the first generator.