SU1287217A1 - Training device for radiotelegraph operator - Google Patents

Abstract

The invention relates to Morse code character transmission quality control devices used in training. The purpose of the invention is the spreading of the didactic capabilities of the simulator. The simulator contains telegraph keys 1, response evaluation block 2, electroacoustic transducers 3, switch 5, block 6 for presenting training information, sound generator 4, element 7, one-shot 13, differentiation element 16, single pulse generator 17, first and second triggers 9 and 14, counter 10 (the number of errors), counter 15 (the number of characters), the element OR 12, the element BAN 8 and the display unit 11. The introduction of the switch, the element AND, the BAN element, the differentiation element, the generator of single pulses, the element OR, one-way a rator, a counter (number of characters) and a second trigger, additional telegraph keys, response evaluation units and electroacoustic transducers, as well as completing the presentation of training information and the response evaluation unit, allows you to more accurately analyze the skills of transmission at a certain pace and rhythm. 2 hp f-ly, 2 ill. S (l

Description

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The invention relates to teaching devices, in particular to instruments for monitoring the quality of transmission of Morse code characters,

The purpose of the invention is the expansion of the didactic capabilities of the simulator due to more accurate analysis, skills of transmission at a certain pace and rhythm and objective distribution into subgroups, which reduces the time for preparing radio telegraph operators.

FIG. 1 shows a functional electrical circuit of the device; in fig. 2 - time diagrams for his work.

The device dp of controlling the professional skills of radiotelegraphists contains telegraph keys Ij-l, (where n is the number of workplaces in the audience), block 2 (-2p answer evaluations, electroacoustic transducers 3i-3), sound generator 4, switch 5, block 6 educational information, element 7 AND, BAN element 8, trigger 9, counter 10 (number of errors), display unit 11, element 12 OR, one-shot 13, trigger 14, counter 15 (number of characters), element 16 differentiator, the driver of 17 single pulses (the duration of which is regulated by s).

Unit 6 of presentation of educational information contains the shaper 18 single pulses. Block 2 evaluation of answers contains the key 19, the element 20 OR, and the element 21 EXCLUSIVE OR.

The training information presentation unit 6 also includes a pulse distributor 22, switches 23, -24g (where 1 is the number of characters), encoder 24, shift register 25, first and second delay elements 26 and 27, clock generator 28 (the duration of which is adjustable) element 29

IPI-NOT (dp allocation of pauses between characters), key 30 and audio frequency generator 31.

The device works as follows:

Previously, the teacher switches (not shown) sets the duration of the generator 4 pulses, corresponding to a certain transmission rate, from 4 to 12 g / min, for example 6 g / min, and the pulse duration of the former 17, the corresponding permissible error

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These rhythm disturbances are 5j 10 and 20%, for example 10%, with which o6y4aeNbiM is allowed. Turn on the power. Counters 10 and 15 are set to the initial state, generators 4, 31 and 28 are turned on. The device is ready for operation. When the students are ready to transfer the text according to the method of the master, the teacher presses the button on the 18 Start button. A pulse from the output of the imaging unit 18 is supplied to the input of the delay element 26 and the input of the distributor 22, ensuring the appearance of a single potential at its first output. A single potential from the first output of the distributor 22 through the switch 23., set to a position, for example, the letter P, is fed to the inputs of the encoder 24, ensuring the formation at its outputs of a specified sign (leading signal) in the form of a bottom formalized number in which the dot corresponds to 1 , a dash is 111, and the pause between the elements of the sign is O.

The pulse from the output of the element 26 is fed to the delay element 27 and the first control input of the register 25, translating the latter into parallel recording mode, and the element 27 having passed, will go to the second control input of the register 25, ensuring a separate recording of the sign from the output of the encoder 24 in the register 25.

Clock pulses from the generator 28 output, fed to the third (clock) input of the register 25, advance the sign from the n + 2 outputs to the control input of the key 30 (Fig. 2a) and to the first input of the element 21 of block 2. First element of the sign P (point) from the output of the switch 30, filled with the frequency of the generator 31, through the element 20 of the OR blocks 2 is fed into the electro-acoustic converters 3.

Trainees in accordance with the text pass. First sign (P), manipulative telegraph key I.

When forming the first element of the mark (point), the positive potential from the output of the telegraph key 1 is fed to the second input of the element 21 (Fig. 26) and to the control input of the key 19, ensuring the passage of the audio frequency from the output of the generator 4, which is 100-200 Hz is selected above or below the oscillator frequency 28. This signal (slave) through the element

20 OR is also supplied to electroacoustic transducers 3,

If the student transmits the elements of the sign with a delay (ahead) with respect to the elements of the sign of the master

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ny popping that follow a uniform tone. When transmitting an element of sign, the participants must find such a rhythm that the claps do not hear.

At the same time, the code combinations of the master and slave signals (characters) applied to the first (from the first register 25) and to the second (from the output of the telegraph key 1) inputs of the element 21 EXCEPT OR, form output pulses whose duration is determined by the delay time (ahead ) formed by the trainee slave signal.

Similarly, the second and subsequent elements of the sign are formed.

At the end of the sign (its extension), the outputs of the register 25 appear zeros, which, acting on the inputs of the IPI-NE element 29, cause the appearance of a single potential (a pause pulse) at the output, which is fed to the input of the trigger 14, at its output a single potential.

The control by the teacher of the transfer of trainees is carried out as follows.

The teacher on switch 5 presses a button (not shown) that corresponds to the student being monitored, for example, workplace No. 2. Positive potential from the second output of switch 5 through element 12 OR is fed to the one-channel 13 (with a potential input). The impulse from the output of the one-shot 13 is fed to the input of the trigger 14, ensuring that a zero potential appears at its output (to start counting the number of characters from the next character), and to the inputs of counters 10 and 15, setting them to their original state.

When a pause pulse arrives at the trigger 14 input from the second output of block 6 (element 29 OR-NOT), the output of trigger 14 causes a single potential applied to the second input of element 7 I. If the transfer of the slave signal does not coincide with the leading signal, then outlet ele

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ment 21 (workplace number 2) in tg with error pulses, which through the switch 5 and element 7 also arrive at the information input of the BAN element 8 (Fig. 2c).

At the same time, from the first output of block 6 (from the output of the generator 28) the clock-and-K), i.e., the pulses whose duration is equal to the duration of the elementary transmission (point) of the driving signal, are sent to the differentiation element 16. The front edge of the incoming clock pulse generates an odd pulse, the back front - an even pulse of 5 pulses, which are fed to the shaper 17, which forms positive pulses of a rectangular shape of a given duration (depending on the position of the permissible error switch). The tolerance pulses (given error) arrive at the element 8 prohibiting entry (FIG. 2d).

If the duration error pulses do not exceed the tolerance pulses, then there will be no error pulses at the output of element 8 (Fig. 2e).

If the pulses of an error in duration exceed the pulses of the tolerance, then at the output of element 8, in TC, there are 30 pulses of error ((Rg. 2d).

An error pulse from the output of element 8 (Fig. 2g) flips the trigger. ger 9 which is momentum pause

(Fig. 2e) was set to the zero 35 position, to the single position. The pulse from the output of the trigger 9 is fed to the first input of the counter 10 and will fix the sign transmitted with an error.

The pause pulse from the output of the element 40 29 of the block 6, entering the inputs of the flip-flops 9 and 14, will translate the last

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to the zero position, and entering the first input of the counter 15 will fix the transmitted sign.

Upon completion of the control, the teacher returns the switch button 5 (of workplace No. 2) to the initial state, the flow of information from the output of the element 21 of the block 22 stops.

By switching on the control of the next student (pressing the indication button is not shown), the pulse from the output of the one-shot 13 returns the counters 10 and 15 to the initial state and displays in the block 11 of the display the number of controlled characters and the number of characters in which errors were made. Depending on the number of tolerances 5128

In general, the teacher reduces or increases the permissible error (according to the results of control of the majority of students).

F-rmula invention

Claims (1)

1. A wireless telegraph simulator containing a training information presentation unit, a sound generator, a display unit, a telegraph key, an electro-acoustic transducer and an answer evaluation unit, the first input of which is connected to the output of the telegraph key, and the second input connected to the first output of the training presentation module information, the first counter, the output of which is connected to the first input of the display unit, the shaper of single pulses and the first trigger, characterized in that, in order to expand the didactic capabilities of the simulator Inserted in series are the AND element, the BANNER element, the second trigger and the second counter, the output of which is connected to the second input of the display unit, additional telegraph keys and electroacoustic transducers, the serially connected switch, the CRPD element and the single vibrator, the output of which is connected to the first the input of the first trigger, the second input of the second counter and the first input of the first counter, the second input of which and the second inputs of the flip-flops are connected to the second output of the training information presentation unit, differentiation element, the input of which is connected to the third output of the educational information supply unit, and the output is connected to the input of the single pulse generator, the output of which is connected to the second input of the BAN, additional response evaluation units, the first inputs of which are connected to the outputs of the corresponding additional telegraph keys and the second entrances 76 connected to the first output of the educational information presentation unit, third inputs of the response evaluation units are connected to the sound generator output, fourth inputs to the fourth output of the educational information presentation unit, the first outputs to the inputs of the corresponding electroacoustic transducers, and the second outputs to the inputs of the switch, 2, the simulator according to claim 1, distinguished from the fact that the training information presentation unit contains serially connected pulse distributor, switches, an encoder, a shift register and an ILYE element, the output of which is the first output of the unit A single pulse shaper, the output of which is connected to the input of the pulse distributor and is connected to the second input of the shift register through the first delay element, the third input of which is connected to the output of the single pulse through the first and second delay elements, Audio signal generator connected in series and a key whose output is the second output of the block, one of the outputs of the shift register is connected to the second key input and is the third output of the block, clock generator, the output of which is the fourth output of the block and connected to the fourth input of the register shear 3, the simulator of claim 1, wherein the response evaluation unit comprises a key, an OR element, and an EXCLUSIVE OR element, the first inputs of which are respectively the first, second, and third inputs of the block, the second inputs of the key and the EXCLUSIVE OR element are the fourth input of the block, the output of the key is connected to the second input of the OR element, the output of which is the first output of the block, the second output of which is the output of the EXCLUSIVE OR element. n GPI I P g - I nI1 P nnPPPnPPP PPPPPLPPPPPPPPP nn n n n m FIG. 2