SU1272347A1 - Device for checking the working skills of radiotelegraph operators - Google Patents

Abstract

The invention relates to the field of automation and computer technology and can be used in the professional selection of radio telegraph operators. The purpose of the invention is to improve the accuracy of the device. The device contains a shaper 1 clock pulses, block 2 of the control program, two blocks 3 and 4 of presentation of audio information, control block 5, element 6 AND, switch 7. first generator 8 and shift register II, indicator 12, operator panel 15, block 16 answers for an answer registration, a prohibition element 17, a delay element 18 an indication unit 19. Introducing a second shift register 13 and two generators 9 and 10 into the device provides control over the sensitivity of the radio telegraph analyst's sensitivity to the perception of changes in the signal current height when the operating frequencies of two radio stations approach each other (pinching of noise noise varying in magnitude on them). 2 or . (L to to oo 4:

Description

The invention relates to automation and computer technology and to a technique for studying psycho-physiological reactions, in particular, devices for controlling professional skills, and can be used in the professional selection of radio telegraph operators.

The purpose of the invention is to increase the accuracy of the device by taking into account the effect of noise interference, reducing the time required to prepare the device and automating the process of displaying the signs of a Morse code sequence.

FIG. 1 shows the structure of the device; in fig. 2 is a diagram of a Morse code driver.

The device contains a shaper 1 clock pulses, block 2 of the control program, blocks 3 and 4 of presentation of audio information, control block 5, element 6, switch 7, generator 8 (pulses), generator 9 (noise), generator 10 (noise interference ), shift register 11, noise indicator 12, shift register 13, which is a frequency controller, indicator 14, operator console 15, response analysis and result recording unit 16, prohibition element 17, delay element 18, and display unit 19.

Block 2 contains the shapers 20 and 21 Morse codes.

Blocks 3 and 4 include an analog switch 22 and an electro-acoustic transducer 23.

Block 5 contains shapers 24 and 25 pause pulses (between characters), shaper 26 of the binomial pulse sequence, elements 6 and 27.

Switch 7 contains elements AND 28-31, trigger 32 and elements OR 33 and 34. The operator’s console 15 includes the Start button 35 and buttons 36 and 37 the Answer.

Block 16 contains elements 38 and 39, elements OR 40 and 41, the counter 42 answers, the counter 43 correct answers, the counter 44 cycles, the element 45 and indicator 46 "The test is completed.

The formers 20 and 21 contain (FIG. 2) a counter-decoder 47, switches 48 (allow the sequence of ten characters of the Morse code to be set), an encoder 49, a register 50, and delay elements 51 and 52.

When working with a device, the subject is suggested to choose from two simultaneously transmitted sequences of Morse code characters, differing in frequency (tone), by means of the presented sound samples of characters, a sequence with a higher frequency, indicating the location of each character in this sequence by pressing the corresponding button (depending on the listening sound sample of the Morse code symbol with a higher frequency in the first or second electroacoustic converter); (increase) the amount of noise interference that affects the signal signs of both sequences (main and interfering).

Preparing the device for operation is reduced to installation in each driver 20, and 21 using switches 48 sequences of the corresponding Morse code characters, one of which is the main one and the other one the interfering.

The device works as follows. When power is turned on

The shift register 11 and counters 42-44 return to the initial state, register 13 and indicator 14 are in the first position. Generators 8 and 9 are started. At the output of generator 8, a signal of 1000 Hz appears, and at the output of generator 9 is a frequency of 900 Hz. On

0 indicator 14, the first light is on, signaling that the difference between the frequencies of the oscillators is SHO Hz. On one output of the trigger 32 of the switch 7 there is a single potential, on the other - zero. If there is a single potential at the first output of the trigger 32, the signal from the generator 8 is fed to the second (informational) input of the key 22, and the signal from the generator 9 to the second input of the key 22. If there is a single potential at the second output of the trigger 32, the signal from the generator 8 served in block 4, ac generator 9 - in block 3. At the same time, a single potential from the output of trigger 32 is fed to one of the inputs of block 16.

The launch of the device for presenting identification signals (characters) for identification is carried out by pressing the button 35 "Start. The pulse from its output will go to the input of the driver 1. and will start it, and also feeds the inputs of the drivers 20 and 21 of the Morse code, ensuring the preparation of the first character in them for

0 advancement Clock pulses from the output of the imaging unit 1 arriving at the inputs of the formers 20 and 21 provide sequential extension of binary code combinations of characters from their outputs to the control inputs of the keys 22 and to the inputs of the imagers 24 and 25. The electroacoustic converter 23 of the block 3 is given a Morse code sign, frequency the filling of which (tone) is higher than that of the electroacoustic converter 23 of block 4,

0 i.e., the subject is simultaneously presented with an information (main) signal and a telegraph interference signal. If the subject considers that the information signal sounds in the electro-acoustic converter 23 of block 3 (first), then he presses the button

5 36, and if it considers informational. the signal sounds in the electro-acoustic converter 23 of block 4 (second), then presses button 37.

When the answer is correct (in our example, the information signal goes to block 3) the pulse from the button 36 goes to the first input of element 38, to the second input of which the unit potential from the first output of trigger 32 is fed, and through element 40 to counter 43, which will fix correct answer. At the same time, the response pulse of the subject will pass through the element 41, will go to the information input of the element 17 and be fixed by the counter 42.

During the pause between the signs at the outputs of the formers 24 and 25, pulses appear that are fed to the inputs of the element 6, providing the shutdown of the shaper 1, and the input of the element 27. At the same time, if there is also one from the shaper 26, then at the output of the element 27 a unit potential, which, arriving at the counting input of the trigger 32, changes its state: at the first output there will be a logical zero, at the second output - a logical unit.

The pulses of the tonal frequency from the generator 8 enter through element 29 and element 34 into block 4, and the pulses from generator 9 through element 31 and element 33 into block 3. The pulse from the output of element 17, since the potential of its prohibiting input is zero the second output of block 19, will go to the input of element 18 and, delayed there by 1-2 s, will transfer shapers 20 and 21 to the next position (on the second sequence characters) and turn on shaper 1, ensuring that the next (second) characters are pulled out to shaper outputs 20 and 21. At the same time, the next sign of information onnogo signal is applied to the second electro-acoustic transducer, a telegraph noise - at first.

The subject, listening to the signals of both sequences, locates the information signal and presses the corresponding button.

If the answer is incorrect, the latter will be recorded only by the counter 42.

If the subject correctly identified all the characters of the information sequence, then at the outputs of the counters 42 and 43, the overflow pulses are in ms. These pulses applied to element 45 will ensure that the pulse at the input of register 13 is transmitted, which is transferred to the second position by changing (increasing) the frequency of the generator 9 by 30 Hz. In the indicator 14, a second light comes on, which indicates that the frequency difference between the generators 8 and 9 is 70 Hz.

The impulse, overflows from the output of the counter 42 will simultaneously arrive at the prohibiting entry of the element 17 and will prevent the starting of the former 1 and the formers 20 and 21, as well as return the counters 42 and 43 to the initial state.

The subject presses the 35 1 “button: Start and, as described above, identifies the characters of the information sequence in the conditions when the tonal frequency of the telegraph interference approached the frequency of the information signal at 30 Hz.

With the correct identification of the information sequence in the second cycle, transition to the third cycle, approaching the frequency of interference to the signal frequency by another 20 Hz, etc.

If at least one sign is incorrectly recognized in the information sequence at the output of counter 43, the overflow pulse does not work, the repeated (next) recognition cycle occurs at the same frequencies of generators 8 and 9.

After all six cycles have been correctly identified, from the last (seventh) output of register 13, a pulse arrives at the input of register 11, which transfers it to the first position and ensures that the generator 10 is turned on and the minimum noise disturbance at its output the inputs of elements 33 and 34, i.e., 5 will be superimposed on the information signal and telegraphic interference, creating identification conditions close to real ones.

If with noise interference all six cycles are recognized correctly, then register 11 with the next pulse from the last output of register 13 will be transferred to the second position and, at the output of the generator 10, will have the largest noise interference.

After testing twenty-four cycles at the output of the counter 44, the overflow pulse will warn the subject of the end of the test — the 46 indicator is checked.

Based on the indications of indicators 14 and 12, they determine the degree of readiness of the radio telegraph operator to conduct hearing radio in conditions close to real.

The proposed device for monitoring professional telegraph skills increases the accuracy of monitoring by determining the magnitude of the contrast sensitivity of the auditory analyzer to the perception of changes in pitch when the operating frequencies of two radio stations (both interfering and interfering) are similar to each other when noise values vary in magnitude are applied. The joint presentation of two sequences of Morse code signs to two electroacoustic transducers and the random change of the location of sound samples of signs with a gradual change in the frequency (tone) of one of the sequences by bringing them closer together with the absence of noise interference, and then post-incrementing their size

with a minimum, it makes it possible to determine the magnitude of the contrast sensitivity of the subject under conditions close to real. In addition, the operational capabilities of the device are significantly improved by eliminating the need for qualified personnel to prepare the devices for operation (the information is entered into the program block by setting the switches in the appropriate positions) and the preparation time is reduced, while automating the presentation of each sign of the sequence, which contributes focusing the subject's attention and increasing the objectivity of the assessment of his skills.

Claims (1)

Invention Formula A device for controlling the professional skills of radio telegraphs, comprising a first generator and a series-connected operator console, a response analysis unit, a clock generator, a control program setting unit, a control unit, a switch and the first and second audio information presentation units, the second inputs of which are connected respectively to the first and sec. 1 "G outputs of the task block of the control program, the second input of which is connected to the second output of the operator’s console and the first output of the response analysis block, Ora input coupled to the second output switch and the second output - with an input of the first shift register, whose output is connected to the input of the first shift register. the output of the first shift register is connected to the first input of the display unit, the second input of the clock pulse generator is connected to the second output of the control unit, characterized in that, in order to improve the accuracy of the device, the second and third generators and the second shift register, the input of which is connected to one of the outputs of the first shift register, and the output with the second input of the display unit and with the input of the third generator, the output of which is connected to the second input of the switch, the third and fourth inputs of the switch with respectively unified with the outputs of the first generator and the second generator having an input connected to the output of the first sdvigayusche go register.