SU1339618A1 - Device for checking professional skill of radiotelegraph operators - Google Patents

Abstract

The invention relates to training devices and can be used to control the quality of the transmission of the characters of the Morse code of a group of trainees in turn. Purpose of the invention (L 00 co co 05 00

Description

increase the accuracy of the device. The device contains telegraph keys 2, switch 1, the recorder 3 pauses between characters, block 4 control time, one-shot 5, two elements And 7 and 12, two elements OR 6 and 16, shaper 8 pulses, counters 9 and 14, decoder 10, block 11 comparisons, block 15 counters, generator 18 (time stamps), element 13 for 1

The invention relates to teaching devices, in particular, devices for alternately controlling the quality of the transmission of the characters of the Morse code of a group of students.

The aim of the invention is to improve the accuracy of the device by comparing the elements of the sign with itself, i.e. point (dash) with a pause, taking into account its own rhythm.

The drawing shows the functional scheme of the device.

The device for controlling the professional skills of radio telegraph operators contains a series-connected switch 1 (teacher’s choice of students for control) assembled on toggle switches (buttons), telegraph keys 2, recorder 3 pauses between signs, timer 4, single-shot 5 (potential), element OR 6 , element I. 7., shaper 8 pulses, counter 9, decoder 10, block AND compare, second element AND 12, prohibition element 13 and counter 14. (the number of characters in which proportionality is violated), block 15 counters, element OR 16 element 17 delay and for generators 18 pulses (timestamps).

Registrar 3 contains an inverter 19 One-Vibrator 20 and an element And 21. Timer 4 contains a trigger 22, a time relay 23 and a prohibition element 24.

The imaging unit 8 contains a differentiation element 25 and a single vibrator 26.

Block 11 contains the first and second groups of elements And 27, -27j. and 28, -285-, 40 reversible counters 29 (-29; - both eletreta and delay element 17. Introduction of control time block, comparison block, one-shot, prohibition element, delay element, two AND elements and OR element, as well as block execution the control time and the comparison block made it possible to compare the elements of the sign among themselves taking into account their own rhythm. 1 Cp f-crystals, 1 ill.

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5 5 o

five

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cops OR 30, -305-. Block 15 has counters 31f-31.

The device works as follows:

When the power is turned on, generator 18 is turned on, counters 9, 14, 29 and 31 are reset.

Preliminary, the teacher sets a standard speed with which the learner must work for a long time using a switch (not shown), for example, 12 groups per minute, changing the frequency of the time stamps of the generator 18 and regulating the counting cycle of the counters 29 and 31. Then using the switch panel 1 connects the workplace of the student, the work is to be monitored. A positive potential appears at the output of the toggle switch, for example, coaxially, which through the element OR 6 is fed to the input of the one-shot 5. The pulse from the output of the one-shot 5 goes to the R-input of the trigger 22, providing a zero potential at its output applied to the entry prohibiting element 24.

The sign elements transmitted by the student from the output of the telegraph key 2 through the switch 1 arrive at the second input of the element 7 and the input of the inverter 19. The inverted elements of the sign are fed to the input of the one-vibrator 20 and the input of the element 21, the second input of which receives pulses from the inverse output of the one-vibrator 20. When transferring points, dashes and pauses between them at the output of the element And 21 im3

pulse absent. When the student transfers a pause between characters, the duration | which is three-five times longer than the pause between the elements of the sign, at the output of the element 21, an impulse appears which via the information input of the element 24 enters the input of the time relay 23, providing the output of the last impulse of 2 minutes duration. This pulse from the output of the time relay 23 is fed to the input of the trigger 22, providing from its output a single potential to the prohibiting input of the element 24, and to the first input of the And 7 element, ensuring the passage of the sign elements (signs) from the output of the telegraph key 2 to the input of the driver 8 ,

Let the learner form the sign A. The leading edge of the received element of the mark (point) forms the first (odd) pulse at the output of the differentiation element 25. This pulse is converted by the shaper 26 into a short positive square pulse, which is fed to the first (counting) input of the counter 9, providing a signal at its first output. The signal from the output of counter 9 enters the decoder 10, at the first output of which a single potential appears. This potential, acting on the first input element And 27 ,, ensures the passage of pulses (time marks) from the output of the generator 18 to the first (summing input of the counter 29 ,. The falling edge of the incoming point (the beginning of the pause between the elements of the sign) forms the second (even) pulse on output element 25, which is converted by a single vibrator 26 into a short positive pulse of a rectangular shape. This pulse arrives at the first input of the counter 9 and transfers it to the next (second) position, ensuring the appearance of a single potential on the second about the output of the decoder 10 and at the same time terminating the action of a single potential at the first output of the decoder 10, the duration of which determines c, the sign element (point) specified by the telegraph key 2. The unit potential from the second output of the decoder 10 will act on the first input of the And 284 element , ensures the passage of time marks from the output of the generator 18 to the second (subtractive) input

counter 29, and the first (counting) input of counter 31,.

If the number of time marks (pulses) received at the second (subtracting) input of the counter 29.) is equal to more or less per pulse the number of pulses received at the first (summing) input, then at one of its three outputs appears a single potential, which through the element OR 30 (and the element And 12 enters the prohibiting entrance of the element 13, preventing the fixation of the element of the sign, the violation of proportionality in which does not exceed the permissible limits.

If the number of pulses (time stamps) received at the second (subtracting) input of counter 29, is more or less for two or more pulses received at the first (summing) input, then at the outputs of counter 29, there is no unit potential. A zero potential is applied to the prohibiting entry of the element 13 by preparing a circuit for fixing the sign with the irregularity of proportionality.

When the trainee forms the next (second) element of the sign (dash), similarly to that described, the third pulse appears at the output of the imaging unit 8, which arrives at the first input of the counter 9 and transfers it to the next (third) position, thus providing the appearance unit potential at the third output of the decoder 10 and at the same time terminating the action of the unit potential, at its second output, the duration of which is determined by a pause formed by the telegraph key 2. The appearance of a single potential at the third output of the decoder 10 ensures the arrival of time marks at the summing input of the counter 29, and the appearance of a single potential at the fourth output of the decoder 10 ensures the arrival of time marks at the subtracting input of the counter 29 and so on, with each odd pulse from the output of the imager 8 defines the beginning of the formed element of the sign (point, dash) and the end of the pause, and each even pulse represents the end of the formation of the element of the sign and the beginning of the formation of the pause.

Since the duration of the pause following the dash is no less than double the length of the pause between the elements of the mark, after transferring the sign of two elements (A), the second counter 31, whose capacity is 2 T (where o is the duration of the sprinkling) the pulse is overflowed at the output, which through the element OR 16 goes to the second input of counter 6 and returns it to the initial state, thereby stopping the supply of a single potential from the fourth output of the decoder 10 to the first input of element 282, i.e. the arrival of timestamps after 2 o in counter 29 is terminated (to the subtracting input). If there is no violation of proportionality (or if it is within acceptable limits), the pulse from the output of the element OR 16, which entered the information input of the prohibition element 13, does not pass into the counter 14. In case of violation of proportionality beyond the permissible limits, at least in one element of the sign, counter 14 fixes this sign as transmitted with violation of proportionality. The pulse from the output of the element 17 returns the counters 29 and 31 to the initial state.

Similarly, a violation of proportionality is made in one-, three-, four-, and five-element signs.

After 2 min, the pulse (single potential) from the time relay output 23 is stopped, the zero potential is applied to the first input of the element 7. The passage of the elements of the mark (s) to the input of the driver 8 from the output of the telegraph key 2 to the control is stopped.

The instructor takes the readings from the counter 14 and records in the notebook by pressing a button (not shown) returns the counter 14 to the initial state.

The teacher controls the re-transmission of characters to these students at the end of the training, for example, in 20-30 minutes.

To check the transfer of the next bperator, it is necessary to put the toggle switch on the switch 1 of the controlled student to the initial position and turn on the toggle switch on the control of the operator.

Claims (2)

1. A device for controlling the professional skills of radio telegraphists, containing telegraph keys whose outputs are connected to information inputs of a switch, whose information output is connected to the input of the recorder between the characters, a pulse driver, the output of which is connected to the counting input of the first counter, the zero input of which is connected to the output of the first element OR, and the outputs are connected to the inputs of the decoder, a block of counters and a pulse generator, characterized in that, in order to increase: TWA, entered the timer 5 element And, the one-shot and the second element RSHI, whose inputs are connected to the control outputs of the switch, and the output is connected to the input of the single-vibrator, the output of which is connected to the input of the initial installation of the timer, the start input of which is connected to the output of the pause recorder, between the characters, and the output is connected to the first input of the element I, the second input of which is connected to the information output of the switch, and the output is connected to the input of the pulse former, the second counter, the third element OR, the BAN element, the element. delays and a comparator unit, whose information inputs are connected to the decoder outputs, a clock input connected to the pulse generator output, inputs of the initial installation of the comparator unit and a counter block connected to the output of the delay element, whose input and information input of the BANNER element are connected to the output of the first OR element, the inputs of which are connected to the outputs of the block of meters, the information inputs of which are connected to the outputs of the first group of the comparison unit, the outputs of the second group of which are connected to the inputs of the third the OR element, the output of which is connected to the control input of the BAN element, the output of which is connected to the input of the second counter. 2. The device according to claim 1, wherein the comparison unit contains two groups of AND elements, the first inputs of which are the information inputs of the block, the OR elements and reversible counters, the summing and subtracting inputs of which are connected to the outputs elements And, respectively, of the first and second groups, the outputs of the reversible counters of the connection713396188 here with. the inputs of the corresponding elements of the elements of the first and second commodities OR, whose outputs are vykol are the clock input of the block, the strokes of the first group of the block, the outputs and the ganging inputs of the reversible counters of the second group of the block are the outputs of the cocks are the input of the initial set-up elements of the second group, second installments of the block.