SU978181A1 - Radio telegraph operator simulator - Google Patents

Description

(54) RADIOTELEGRAPHIST SIMULATOR

The invention relates to automation and computer engineering, in particular to technical training aids, and can be used to train radio telegraphers.

A simulator is known that includes a control panel with a class of control, including the main signal generator, two interference generators, a switchboard and radio telegraph operators, connected via a switchboard Cl.

The disadvantage of this device is the limited didactic possibilities and the low learning efficiency.

Another simulator is known for teaching radio telegraphists to detect radio signals in the background of interference and contents of the student’s console from the scoreboard and analysis and evaluation units, interference source, radio source connected via the OR block with loudspeaker f2.

However, this device has low efficiency, because there is no feedback in training.

The closest to the proposed is a simulator, containing a source of interference, connected through an interference level controller with a speaker:

jieM, to which the source of the reference signal is simultaneously connected via the OR circuit and the sound generator. The output of the test signal source is connected to the OR circuit and to one of the inputs of the analysis unit, to the second input of which the test panel is connected. The analysis output is connected to the outputs of the interference source, the source of the reference signal, the command display and the evaluation unit, the output of which is connected to the interference level controller 131.

The device works in the following way.

15

When the device is turned on, the reference signal through the OR circuit, the sound generator and the loudspeaker is presented to the wireless telegraph operator for

2Q neither. At the same time, the command Remember is on the scoreboard. Interference source is on. After presenting the group of reference signals, the source of the reference signal generates an impulse that switches the scoreboard with

 Memorize the command Answer and includes sources of test signal and interference.

The source of the test signal through the OR circuit, sound generator

thirty

and the loudspeaker presents a signal that is an uniformly alternate sequence of reference signals. At the same time, this signal arrives at the analysis unit and is compared with the responses of radio telegraphs. With the correct answers, the evaluation unit receives a signal at the noise level controller, which increases the interference level. The error signal from the output of the analysis unit turns off the source of interference, turns on the source of the reference signal and lights the command “Record”. The disadvantage of the prototype is the impossibility of practicing the skills of a wireless telecom operator on detuning from interference by changing the current of the desired signal, bandwidth, enhancing the output signal and switching to spare parts. stoty. The purpose of the invention is the expansion of the didactic capabilities of the device. This goal is achieved by the fact that a wireless telegraph simulator containing a signal source of interference, an interference level controller, an electroacoustic converter, an information board, a serially connected response input unit, a comparison unit and an evaluation pulse generator are sequentially included source of reference signals, source of test signals, the OR element and the sound generator, the second output of the source of reference signals connected to the second the input of the OR element, and the input with the output of the comparison unit connected to the input of the source of interference signals and the first input of the information board, the second input of which is connected to the second output of the source of test signals, the first output of which is connected to the second input of the comparison unit evaluation is connected to the input of the interference signal controller, the interference frequency controller, a mixer and a filter are entered, the output of the evaluation signal generator through the series-connected interference frequency controller, the source with Interference signals, an interference level controller, a mixer and a filter are connected to the input of an electroacoustic converter, the output of a sound generator is connected to the second input, a mixer. The drawing shows a diagram of the device. The device contains an interferer signal source 1 connected via an interfering level controller 2, mixer 3 and filter 4 (detuning) to an electro-acoustic transducer 5. A source 6 of reference signals is connected to the second input of mixer 3 through the OR 7 element and the sound generator 8 The input of the source 9 of the test signals is connected to the source b and the scoreboard 10 commands, and the output to the second input of the element 7 and one of the inputs of the comparison unit 11, the second input of which is connected to the response input unit 12. The output of block 11 is connected to source 1, source 6, the scoreboard liD, and shaper 13 of the evaluation signals, the output of which is connected to regulator 2 and regulator 14 of the interference frequency. The simulator works as follows. When the device is turned on, the source b through element 7, generator 8, mixer 3, filter 4 (for example, a series-connected balanced modulator and a low-frequency amplifier) connects the second input of the balanced modulator to the reference frequency generator and the converter 5 presents the test signal to the test person memorizing. In this case, the radio telegraph operator changes the frequency of the adjustment of the reference frequency generator and the gain level on the filter 4 can select the optimal conditions for the perception of reference signals. On the scoreboard 10 the command Memorize is on. Source 1 is turned off and its frequency is sharply different from the frequency of the useful signal (sound generator s). After presenting the group of reference signals, the source b generates a pulse that switches the board 10 from the command Remember to the Answer command and simultaneously turns on sources 1 and 9. Source 9 through element 7, generator 8, mixer 3, filter 4 and converter 5 present a signal, which is a uniform sequence of reference signals. At the same time, this signal arrives at block 11, where it is compared with the radio telegraph operator's responses from block 12. If the radio telegraph operator successfully responds from the generator - 13, a signal will be sent to controller 2, which will increase the level of interference, and to controller 14, which will bring the frequency of interference to filter 4 bandwidth Wireless telegraph, changing the bandwidth of the low-frequency amplifier (switches from wider to narrower, gain level and frequency of the reference oscillator (tone of the useful signal), i.e. manipulated by filter handles 4, rebuilds from interference, achieves the best conditions for receiving a useful signal. The error signal from the output of block 11 turns off source 1, turns on source b and lights the command Remember on the scoreboard 10. The use of the proposed simulator causes a reduction in time

Claims (1)

Claim A wireless simulator containing an interference signal source, 20 an interference level regulator, an electro-acoustic transducer, an information board, in series (connected answer input unit, comparison unit and evaluation signal generator, series-connected reference signal source, test signal source, OR element and sound generator, WTO , swarm the output of the source of reference signals is connected to the second input of the element · ³⁰ that OR, and the input is connected to the output of the comparison unit connected to the input of the source of interference signals and the first input of the information board, the second input of which is connected to the second output of the test signal source, the first output of which is connected to the second input of the comparison unit, the output of the evaluation signal generator is connected to the input of the interference signal regulator, characterized in that, in order to expand the didactic the capabilities of the simulator, a noise frequency regulator, a mixer and a filter are introduced into it, and the output of the evaluation signal generator through the noise frequency regulator connected in series, the interference signal source, p the noise level controller, mixer and filter are connected to the input of the electro-acoustic pre-. sound generator output is connected to the second input of the mixer.