SU1339620A1 - Device for training radiotelegraph operators - Google Patents

Abstract

The invention relates to radio telegraph simulators. The purpose of the invention is to improve the accuracy of the device due to a more correct determination of the lower auditory threshold of operators when receiving Morse code signs by ear by ensuring the heterogeneous structure of the elements of the Dot and Dash signs. This increases the objectivity of the assessment of the lower hearing threshold of the radio telegraph operator. The device contains a pulse generator 1, a pulse distributor 2, a Morse code shaper 3, an answer comparison unit 4, an operator console 5, a counter 6, a frequency modulation block 7, a key 8, a sound generator 9, a voltage divider 10, a decoder 11, an electroacoustic converter 12, the display unit 13, the elements AND 14, 15, the element OR 16, the driver 17 pulses. 1 il. with (L with:

Description

one

The invention relates to automation, in particular to training devices, and can be used in the training of radio telegraphers.

The aim of the invention is to improve the accuracy of the device by increasing the objectivity of the assessment of the lower hearing threshold of the operator by introducing a frequency (tone) difference of 100-300 Hz in the element of the structure of the sign (Points and Dashes).

The drawing shows the structure of the device.

The device for training radio telegraphs includes a pulse generator 1, a pulse distributor 2, a Morse code generator 3, an answer comparison unit 4, an operator console 5, a counter 6, a frequency modulation block 7, a key 8, a sound generator 9, a voltage divider 10, a decoder 11 electroacoustic transducer 12 and the display unit 13,

Block 7 of frequency modulation contains the first 14 and second 15 elements AND, the element OR 16 and the driver 17 pulses, made on the basis of the key

Shaper 3 contains a register 18, delay elements 19 and 20, switches 21 and encoder 22-,

The device works as follows.

When the power is turned on, a pulse appears at the output of the generator 1, which, acting on the input of the console 5, ensures the appearance of zeros at all its outputs that are applied to the first inputs of block 4, This same pulse,. arriving at the input of the distributor 2, causes the appearance at its first output of logical 1, which, attached to the first of the second inputs of block 4, prepares the chains of correct and incorrect answers, and fed through the switch 21 of the imager 3 to the input of the encoder 22 provides the appearance of its outputs of the corresponding sign of the Morse code in the form of a binary formalized number. At the same time, this pulse, through element 19, arrives at the first input of register 1B, making the transition last

in parallel recording mode, and passing through element 20, enters the second input of register 18, ensuring parallel recording of a binary 16-bit number from the outputs of the encoder 22

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In register 18, When pulses are output from the generator 1 to the register 18, the binary combination is advanced, displaying the telegraph sign structure in which the dash corresponds to 111, the point is 1, the pause between the elements of the sign is O, and between the signs is 0 . ,,, The code combination, acting through the first (informational) output of the register 18 to one input of the key 8, to another input of which oscillations of the audio frequency are supplied from the output of the generator 9, is formed into the sound image of the Morse code sign,

When extending the dash 111, arriving at the input of the register 18 of the first advancing pulse from the output of the generator 1, two logical 1 appear on the second (previous) and first outputs of the register 18, which through AND 14 and OR 16 enter the driver 17,

The potential from the output of the imager 17 provides an increase in the frequency of the sound generator 9 at 300 Hz,

The arrival of a second propulsive impulse provides an appearance on all

three register outputs of 18 units, which are applied to elements 17 through elements 14 through 16, maintaining the same oscillator frequency 9,

The arrival of the third propulsive pulse causes the appearance of two units at the first and third (subsequent) outputs of register 18, which are applied to elements 17 through elements 15 and 16, ensuring the same

frequency shift.

0

The fourth propulsive impulse causes the unit to appear only at the third output of register 18, which leads to the appearance of a zero at the output of the OR 16 element, which reduces the frequency of the generator 9 by 300 Hz.

When advancement point 1 is advanced, an impulse from the outputs of register 18 to two inputs of elements 14 and 15 simultaneously only one unit is supplied, therefore, zero potential comes from the output of element 16, the frequency generator of the sound generator 9 does not change (turn).

The appearance of a dash (point) at the first (informational) output of register 18 opens the key 8, the tonal dash (points) from the output of the key 8 through del5

Tel 10 is fed to the input of the electro-acoustic transducer 12,

Thus, the shaping of the multi-tonal elements of the Morse code symbols is provided when the tone of the shooting range is broadcast at a higher sound frequency than the tone of the dot.

The subject, having listened to the mark of the Morse code, recognizes it and presses the corresponding button (not shown) of the console 5, on the label of which the identified letter is marked, for example A,

If the trainee has correctly identified the sign, then when a button is pressed, the unit potential from its output goes to one of the first inputs of block 4, the unit potential of the correct answer appears at the corresponding output of the distributor 2 at the corresponding input of the unit 4. , which the

(arrives at the input of the direct count of counter 6, as a result of which the decoder 1 changes its state, switches the corresponding resistor in divider 10 to ensure attenuation of loudness when the next Morse code arrives at the input of the electroacoustic converter 12. Thus, during the reception of marks, when correctly identified, the reproduction volume decreases, approaching the individual hearing threshold of the subject in receiving telegraph signs.

In case the wireless telegraph operator incorrectly recognized the sign, i.e. instead of a button on the nameplate denoting the sign A, pressed a button on the nameplate which is marked B, then at the second output of block 4 there appears a single potential for an incorrect answer that goes to the input the countdown of counter 6, as a result of which the decoder 11 changes its state, switching resistors in divider 10 to ensure that the volume is raised when the next sign of the Morse code arrives,

When the next pulse arrives from the first output of the generator 1, zero potentials are set at the outputs of the console 5, logical 1 appears, for example, at the fourth output of the distributor 2 and through switch 21 /. fed to the encoder 22, ensuring the formation of follow

ten

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sign. The operation of the remaining elements of the device is similar to that described.

During the test, the display unit 13 displays the status of the counter 6 and the decoder II, according to indications of which it is concluded that the operator is capable of receiving signs at a volume below the nominal and their different tone structure.

The use of the invention in preparing radio telegraphs improves the accuracy of the device, since in the process of identifying the loudness of the sound of the signs adaptively approaches the hearing level of the radio telegraphist, the elements of the Points and Tire marks are broadcast with a difference in the sound frequency of 300 Hz, which increases the objectivity of the lower hearing threshold operator.

The introduction of additional informational sign during the test period - the tonal difference in. sounds- 25 SRI Points and Dash on 100-300 Hz - increases the objectivity of the estimate by 2.5 times. The criterion for the objectivity of the assessment is the stability of the test results with repeated checks. The result obtained is confirmed by the data on differential thresholds of perception by the duration of the stimulus of 10–20%, and by the frequency of 1–2% (one order of magnitude higher).

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thirty

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Claims (1)

Invention Formula A device for training radio telegraphs, containing an operator console, the input of which is connected to the first output of the pulse generator, and the outputs - with the corresponding inputs of the first group of the comparison comparison unit, the inputs of the second group of which are connected to the corresponding outputs 45 of the pulse distributor connected to the corresponding information inputs Morse code generator, the first and second synchronization inputs of which are connected respectively to the first and second outputs of the pulse generator, the first output to o-, ryo connected to the input of the pulse distributor, the key, the information input of which is connected to the output of the sound generator 55, the control input to the first output of the Morse code generator, and the output to the information input of the voltage divider whose output is connected to the input of the electroacoustic converter , and the control inputs to the corresponding outputs of the decoder, the counter, the input of the direct account of which is connected to the output of the correct answer of the block of comparison of answers, the input of the countdown - with the output of the wrong answer Single comparing the responses, and outputs - to the corresponding inputs of the decoder and display unit, characterized in that, in order to increase the accuracy of the device inserted into it a block of frequency modulation. 396206 consisting of the first and second elements. AND, an OR element and a pulse former, the output of which is connected to the input of the sound generator, and the input is connected to the output of the OR element, the first and second inputs of which are connected respectively to the outputs of the first and second elements AND, the first inputs of which connected to the first output of the Morse code generator, and the second inputs - with the second and third outputs of the Morse code generator, respectively, five ten