SU1545237A1 - Device for training radio-telegraph operators - Google Patents

Abstract

The invention relates to a technique of training devices. The purpose of the invention is the expansion of didactic opportunities. The device contains a Morse code shaper 2, a sound signal generation unit 2, r-r 3 interferences, an adjustable attenuator 4, an analysis block 5 for 5 responses, a pause extraction unit 6, a signal determination unit 7, an error count counter 8, a pulse counter 9 and a display 10. The goal is achieved by providing radio telegraphists with the training of receiving Morse code signs under interference conditions. For this, with a signal-to-noise ratio equal to and smaller than one, separate, based on binaural localization, reception of information to the right and left hearing organs, in which the signal from one source is shifted in time, is carried out. This allows the trainees to develop the ability to "tune away" from interference that exceeds the signal, and prepare highly skilled radio telegraphists who have the ability to receive signals in difficult conditions in the presence of strong interference. 3 hp f-ly, 1 ill.

Description

The invention relates to training devices and can be used to train radio telegraph operators to detect radio telegraph signals in the background of interference.

The aim of the invention is to expand the didactic possibilities by providing radio telegraphists with the ability to receive Morse code signs under interference conditions.

The drawing shows the structural-electrical circuit of the device.

The device contains Morse code Shaper 1, sound signal generation unit 2, noise generator 3, adjustable attenuator 4, response analysis unit 5, pause extraction unit 6, signal determination unit 7, error number counter 8, pulse counter 9 and display unit 10 In this case, the Morse code shaper 1 contains a distributor 11, switches 12, an encoder 13, a memory register 14, a clock generator 15, the first 16 and second 17 delay elements,, element OR 18, element OR-NOT 19 and prohibition element 20, block 2 Formations of sound signals contain audio frequency generator 21, key 22, delay element 23, first 24 and second 25 amplifiers and first 26 and second 27 headphones, adjustable attenuator 4 contains shift register 28, keys 29, extenders 30, first 31 and second 32 OR elements and element 33 delays, the response analysis block 5 contains the first 34 and second 35 registers, an adder 36 modulo two, the clock pulse generator 37, the first 38 and second 39 elements OR, the trigger 40 and the element 41 AND, the pause extraction unit 6 contains the inverter 42, one-shot 43, element And 44, Shaper 45 single pulses and delay element 46, response input block 7 will hold keyboard

five

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0

five

five

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five

Morse code sensor 47 and Start button 48, and counters 8 and 9 contain counters 49 and 50, delay elements 51 and 52, and elements OR 53 and 54.

The device works as follows.

Pre-switches 12 set the characters (letters, numbers) that the student must learn to distinguish interferences in the Background.

Turn on the power. The counters 49 and 50, the registers 28, 34 and 35 and the distributor 11 are reset. Generators 3, Ib and 21 are turned on. The device is ready for operation.

The learner presses the Start button 48. The impulse from its output goes to the first input of the register 28, connected through the OR 32 element to its second input, writing down the unit in the first discharge. (having the maximum attenuation) and the element OR 31 to the second inputs of the amplifiers 24 and 25 and will highlight at 10 a number indicating the signal-to-noise ratio at which the operator must distinguish the sound image of the Morse code sign, in this case 2.0 is the minimum noise .

At the same time, a pulse from the output of the Start button 48 through the OR element 18 is fed to the inputs of the delay element 16 and the distributor 11, causing the first output of the last logical unit to appear, which is fed through the switch 12 to the corresponding input of the encoder 13, ensuring the formation of the Morse code sign at its output in the form of a binary Normalized number, in which the point corresponds to the I dash - 111, and the pause between the elements of the sign is O. The impulse from the output of the element 16 goes

It goes to the first input of register 14, having transferred the last one to parallel recording mode, and passes through delay element 17, enters the second input of register 14, providing parallel recording of the binary normal number from the outputs of gate 13 through the fourth inputs to the register

14. The clock pulses from the output of the generator 15 to the third input of the register 14, the sign recorded in it is extended.

The code combination of the character from the last output of the register 14 is fed to the first input of the key 22, ensuring the appearance of a tone maker from the generator 21 at the output of the key 22, and to the first input of the register 35 of the block 5, to the second input of which through the OR 39 element clock pulses from the second output shaper 1, so cal zero potential from the output of element 19, applied to the control input of element 20, will ensure the passage of clock pulses through it from the generator output

15, which will write to the register 35 the code combination of the character presented to the operator.

From the output of the key 22, the sound image of the code mark 1 of the orz goes directly to the first input of the amplifier 25 and through the delay element 23 to the first input of the amplifier 24. At the outputs; the amplifiers 24 and 25 in the vehicle sound images a signal + interference, which are fed to the head phones 26 and 27. The signal will arrive to the phone 27 with a delay.

The student, having listened to the sound + noise signal presented to the sound image, identifies the signal in it (the Morse code sign) and presses the corresponding key on the sensor 47.

If the learner correctly reproduces the character, then the character code combination from the first output of the sensor 47, received at the first input of the register 34, to the second input of which is fed through the AND 41 element and the OR element 38 the clock pulses of the second output of the sensor 47, will be written into the register 34. The code combination , received in block 6, at the end of the sign will cause the appearance of a single pulse at its output, which will transfer the trigger 40 of block 5 to the zero position and enter the counter 50, recording the response to the displayed sign, in Aormnrova 10

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20

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Tel 1, supplying the next character, and the oscillator.i 37 to the input, feeding from its output through, the OR elements 38 and 39 of a series of clock pulses to the second inputs of registers 34 and 35, respectively, to read information from them into the adder 36, at the output of the adder 36, the signal is absent, since the code combinations are identical.

If the trainee incorrectly reproduced the sign, then the output of the adder 36 is in accordance with the Wits pulse, which will go to the counter 49 and fix an error.

If the operator of ten characters repeatedly reproduces without error or makes one mistake, then at the output of the counter 50, an overflow pulse appears, which will go to the input of the delay element 52 and through the OR element 32 to the second input of the register 28, moving the unit to the second digit. The potential from the second output of the register 25 of the motor 28 is applied to the control input of the key 29, ensuring the passage of interference from the output of the generator 3 through the extension 30, the OR element 31 to the second inputs of amplified 4 and 25.

At the same time, the unit potential from the second output of the register 28 will be received block 10 indies. PII, we will ensure the flashing of the pyfrp, with (, rBvmmeu signal-to-noise ratio, glgnomu 1.5.

The impulse from the output of the element 57, through the elements of the SLI 53 and 54 will go to the second inputs of the counters 49 and 50, returning the latter to the initial state.

The device proceeds to the next cycle, in which the signal of the prediction is, against the background of interference, more previous.

If a student in the process of presenting ten characters makes two errors, then an output pulse overflow occurs at the output of counter 49, which is fed to the input of delay element 51 and through the OR element 54 to the second input of counter 50, returning it to its original position. The signal-to-noise ratio applied to the holon phones 26 and 27 will not change.

When the trainees perform in the allotted time, the entire program at the output of the eleventh bit of the register 28 has a unit potential, which in block 10 will include

thirty

35

40

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55

The end. This indicates the assimilation of the task by the operator and the need to work out the next characters of the code of the order.

At the same time, a single potential from the eleventh output of the register 28 is fed to the input of the element 33, a delayed pulse from the output of which will go to the third input of the register 28 and will invert it to its original position.

If during the allotted time the End of the banner does not light up, then the success of the training is judged by the light figure on the display unit 10, which represents the signal-to-noise ratio, which the operator reached during the training session.

The use of the invention for radio telegraphs extends the didactic capabilities of devices by providing training for radio operator operators to receive Morse code signs under interference conditions with a signal-to-noise ratio equal to and smaller than one by separate, based on binaural localization of reception on right and left organs of hearing information, the signal in which, supplied from one source, is shifted in time. This allows the trainees to develop the ability of the detuning from interference exceeding the signal, and to prepare highly skilled radio telegraphists who are able to receive signals in difficult conditions, in the presence of strong interference, and also to determine the degree of operator's ability to develop the skill of distinguishing signals against the background of the interference signal-to-noise ratio during training.

Claims (4)

1. A device for training radio telegraphs, comprising a pause allocation unit, an indication unit, a serially connected signal definition unit, a response analysis unit and an error number counter, serially connected Code generator - (Morse code and sound signal generation unit, the first input and output of the imager Morse code is connected respectively to the second output of the signal detection unit and the second input of the Lnapich block of samples, and input g i the course of the pause allocation unit is connected 5452378 respectively, with the first output of the signal detection unit and the third input of the response analysis unit, which is the fact that, c. In order to expand the didactic capabilities by providing radio telegraphists with receiving Morse code signs under interference conditions, a pulse counter and a series-connected noise generator and an adjustable attenuator, the second and third inputs, the first and second outputs of which are connected respectively to the second output of the signal determining unit and the first 10, are introduced 15 20 25 thirty 35 40 45 50 55 the output of the pulse counter, the second input of the sound signal generation unit and the inputs of the display unit, the output of the pause allocation unit is connected to the second input of the Morse code tel and the first input of the pulse counter, the second input and output of which are connected to the error counter The fourth and fifth inputs of the response analysis block are connected respectively to the third output of the signal definition block and the second output f5 1 / worlds of the Morse code bodies. 2. The device according to claim 1, characterized in that the adjustable attenuator contains the first element OR, the delay element connected in series the second element OR and the shift register, each output of which, except the last, through the serially connected key and extension cable is connected to the corresponding input the first element OR, the last output of the shift register through the delay element is connected to the second input of the shift register, the third input of which is connected to the first input of the second OR element and into the second input p adjust- able attenuator, the first and third input, the first and second outputs which are the second inputs of keys and the second input of the second OR gate, the output of the first OR gate and outputs a shift register. 3. The device according to claim 1, about tl and - more often, in that the sound signal generation unit comprises an audio frequency generator connected in series, a key, a delay element, a first amplifier and a first; handy phone The second amplifier and the second head are connected to the telephone; the key output is connected to the first input of the second amplifier, the second input of which is connected to the second input of the first amplifier and is the second input of the audio information presentation unit, the first input of which is the second input of the key. 4. The device according to claim 1, characterized in that the block of analysis of the answers contains sequentially connected trigger, element AND, first element OR, first register and modulo-two adder, serially connected clock generator, second element OR and second register, the output of which connected to the second input of the modulo two adder, the output of the clock pulse generator is connected to the second input of the first OR element, the second input of the first register is connected to the first trigger input and is the first input of the response analysis block, orm the input of which is the second input of the second register, the input of the clock pulse generator is connected to the second input of the trigger and is the third input of the response analysis unit, the fourth, fifth inputs and outputs of which are the second input of the AND element, the second input of the second OR element and the output modulo two.