SU1236536A2 - System for training radiotelegraph operator - Google Patents

Abstract

The invention relates to automation and computing, can be used in the preparation of radio telegraphists and is an improvement of the invention according to the author. No. 947904. The aim of the invention is to expand the didactic capabilities of the simulator. The radio operator simulator contains a Morse code driver, an electro-acoustic converter, first and second counters, a memory unit, five pulse shapers, an operator response input unit, an integrator, an indicator, a generator, an OR element, a pulse generator, three AND elements, a reversible counter, a block keys and digital to analog converter. The simulator allows to evaluate the quality of work on the key by comparing the durations of the generated signals. 2 Il. ju OF 05 sd od SEE

Description

eleven

The invention relates to automation and computing, can be used in the preparation of radio telegraphists and is an improvement of the invention according to the main author. No. 947904.

The purpose of the invention is to expand the didactic capabilities of the simulator by analyzing the quality of work on the key by measuring the durations of the generated signals,

FIG. 1 shows a structural diagram of the simulator; in fig. 2 is a diagram of the first and second pulse formers.

The simulator of the radio operator contains shaper 1 codes (ADCM automatic Morse code sensor), electro-acoustic converter 2, counter 3 (write addresses), first driver 4 pulses, input 5 of counter 3, memory block 6, counter 7 (read address), block 8 input of operator response actions, the second pulse shaper 9, the adder 10, the integrator 11, the indicator 12 and the generator 13 (linearly varying voltage), the OR 14 element. The shapers 4 and 9 contain the series-connected integrator 15, the generator 16 , element 17 and counter 18.

The simulator contains a pulse shaper 1 (pulse shaping along the front), pulse generator 20, element 21, pulse shaper 22 (pulse forming on the leading edge), a reversible counter 23, a key block 24, a digital-analog converter 25, pulse shaper 26 (pulse shaping trailing edge), trigger 27, the element And 28 and the element And 29.

The essence of the invention is as follows. The student listens to the signals (signs) arriving at the converter 2 from the driver 1 codes and with the same speed transmits them on the key. The rate of presentation of signals (signs) smoothly increases, which, in turn, causes an increase in the transmission rate of the learner. If the student makes mistakes in this case, the increase in speed slows down, and when the error rate reaches a certain value, the indicator 12 (error) will light up on the board, instructing the student to stop the transfer on the key, center-.

five

0 s ..

0

five

0

five

36a

to work and then to work again.

At the same time, simultaneously with the start of work, a current analysis of the quality of the student’s work on the key is carried out to prevent him from excessive overvoltage in the work on the key during accelerated preparation, leading to the effect of a hand stall.

The learner using the key of block 8 generates elements of the telegraph code at a pace specified by the former 1 codes. The duration of these elements is influenced by the intensity of the operator’s work. As the student's arousal increases, the duration of the elements of telegraph signs formed by him decreases in comparison with the duration of elements of telegraph signs formed by the code generator 1.

The device works as follows.

When tv: the switches are set to the initial state, block 6, counters 3 and 7, and trigger 27. By pressing a button (not shown), generator 13 is started, and the output of the driver 1 through the converter 2 begins to show telegraph signs to the learner. At the same time, these characters are fed to the input 5 of the counter 3, where the address code is written for writing to block 6. In block 6, the logical zero corresponds to a point, the logical one is a dash. From the output of the imaging unit 4, the pulses corresponding to the signs of the dashes are allowing for writing the logical unit to block 6.

Telegraph signs, which immediately transmits them to the key of block 8. When pulses arrive at counter 7 from block 6, pulses corresponding to the dash element are read and fed to adder 10, to the other input of which pulses are received, formed by the trainee the key of block 8. If the shoe 4aeMbrii reproduces the received signals on the key of block 8 without errors, then there will be no pulses at the output of the adder 10.

The generator 13 is connected to the shaper 1 and controls the change in the rate at which characters are transmitted from it, which can gradually increase. The rate of increase is pre-set

by selecting generator parameters 1 3.

If the student made a mistake, then the output of the adder 10 is driven by a pulse that enters the integrator (low-pass filter) 11, the output of which has a constant component proportional to the error rate. The magnitude of this constant component, the response to the input of the generator 13, can change its parameters and thereby adjusts the transmission rate of characters from the driver 1. When the voltage at the output of the integrator 11 exceeds a certain threshold value (the error rate has become unacceptably high ) indicator 12 (error) lights up. In this case, the trainee ceases to transfer to the class center and, after a necessary interruption, reopens the training.

The selection of the dash signal is as follows. The signal corresponding to the sign of the Morse code enters the integrator 15, the output of which has a constant component. This voltage controls the frequency of generation of the pulses of the generator 16, which thus appears to be proportional to the transmission rate of the characters of the Morse code. The pulses from the generator 16 are received at the first input of the element And 17, at the second input of which are received the pulses corresponding to the elements of the characters Morse code. The output of the element 17 is connected to the counter 18, where the number of pulses received from the generator 16 is counted in a time equal to the duration of the current element of the Morse code sign. If counter 18 is overflowed at its output, the pulse overflow is indicated, indicating the presence of a dash in Morse sign. The counter is set to the P initial state by the back (ont of each element of the Morse code sign.

In the block, the first dash element from shaper 4 is compared with the first element of dash shaper 9, then the second dash element is compared with the second dash element, and so on. throughout the work of the learner. Since the same dash elements do not come at the same time for comparison, they are measured as they arrive, and then their codes

, Q g.

25 -5

thirty

0

five

are compared in pairs in a reversible counter 23. The first element of the dash is fed to the input of the imaging unit 22, where, on its leading edge, a pulse is set to the initial state (zero) roar: the counter 23. In this case, the trigger 27 is in the initial state, since it is set to the zero state when the power supply of the simulator is turned on and the leading edge of each dash element arriving at the first input of the block. The high potential from the zero trigger output permits the pulses from the generator 20 to the reversible 23 counter (summing input) to pass through the element 21 for the duration of the dash element, since a pulse is generated on the back edge of the dash element in the driver 26, which switches the trigger. As a result, a code whose value is proportional to the duration of the dash element will be written in the reversible counter. When the first element of the dash arrives from the key of the block 8, the element And 28 is opened and through it from the generator 20 pulses arrive at the subtractive input of the reversible 23 counter during the duration of the element of the dash. On the falling edge of the dash element in the former 19, a pulse is formed, which switches the trigger 27 and through the open element 29 And this pulse opens the keys of block 24. From the outputs of the reversible counter 23, the subtraction residue will go through the public keys by a parallel code to the digital-analog converter 25. Voltage amplitude the output of the converter 25 is proportional to the code read from the reversible 23 counter, and if the voltage amplitude exceeds the set threshold, the indicator 12 warns the learner about the necessary awns take a break from work.

Claims (1)

Invention Formula Wireless telegraph simulator for auth.St. No. 947904, characterized in that, in order to expand the didactic capabilities of the simulator, a third pulse shaper, a reversible counter, a key block, digital-analogue input are introduced into it a pre-installer and an OR element whose output is connected to the indicator, and a second input to the integrator output, the fourth pulse shaper connected in series, a trigger and the first And element, the output of which is connected to the second input of the reversible counter, the fifth pulse shaper, the second and third And elements pulse generator, the output of which is connected to the second input of the first element and the first input of the second element And, the output of which is connected to the first input of the third element And and the third input of the reversing Editor A. Sabo ostavitel 0 "Boldyrev Tehred I. Gaidosh Corrector G, Reshetnik Order 3095/54 Circulation 455 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab, 4/5 Production and printing company, Uzhgorod, st. Project, 4 the second input is connected to the second output of the trigger, the second input of which is connected to the output of the fifth pulse former and the second input of the third element And whose output is connected to the second input of the key block, the inputs of the third and fourth pulse formers and the third input of the first element And connected to the output of the first pulse former, the input of the fifth pulse former and the third input of the third element I are connected to the output of the second pulse former. fig.g