SU1092747A1 - Device for automatic recording of radio-telegraph signals - Google Patents

Abstract

DEVICE FOR AUTOMATIC REGISTRATION OF RADIOTELEGROGRAPH SIGNALS, containing a clock pulse generator, input matching unit, trigger decimator, modulo two adder, receiving register, the first counter, whose output is connected to the input of the display unit, characterized in that, for the purpose of speed of detection; Four AND elements, three frequency dividers, two control units, second and third counters, an even pulse extraction unit, an odd pulse selection unit, a switch, a sensor of the reference combination, dates IR time and pulse shaper, the output of which is connected to the first input of the even pulse selection unit, to the first input of the odd pulse selection unit and to the first input of the first frequency divider, the output of which is connected to the second input of the even pulse pulser and to the second input of the odd pulse allocation unit The output of which is connected to the first input of the first element I, the second input of which is connected to the output of the modulo two adder, the first input of which is connected to the output of the receiving register, the first input to connected to the output of the input matching unit and to the trigger input, the first output of which is connected to the first input of the second element And, the second input of which is connected to the output of the clock generator and to the first input of the third element And, the output of which is connected to the first input of the second frequency divider the output of which is connected to the first input of the second counter, the output of which through the first control unit is connected to the first input of the third frequency divider, the second input of which is connected (to the second input of the second divide frequency bodies, to the second input of the first frequency divider, to the second input of the second counter and to the output of the first element I, the output of the block of even pulse pulses connected to the second input of the receiving register and c; o the input of the third counter, the output of which is connected to the first input of the com mutator and to the input of the decoder, the output of which is connected to the first house of the fourth element And and to the input of the time sensor, the output of which is connected to the second input of the fourth element And, the output of which is connected to the first input of the first counter,. the second input of which is connected to the output of the second control unit, the input of which is connected to the output of the first counter, the output of the sensor of the reference combination is connected to the second input of the switch, the output of which is connected to the second input of sum-faTopa modulo two, the second output of the trigger is connected

Description

1092747 to the second input TpeTberd of the And element, the frequency, the output of which is the subcontrol of the second element And is connected to the input of the former and the third input of the third pulse separator.

The invention relates to radio and can be used to receive radio telegraph messages.

A device for receiving Morse code signals is known, comprising a control unit, the input of which is connected to the first input of the interval-code converter, the first memory block, the output of which is connected to the first inputs of the first computing unit and the switch, the output of which is connected to the first input of the second memory block , the third memory block, the second computation block and the first element analyzer, whose outputs are connected to the inputs of the code converter, are connected in series, the corresponding output of the control unit is connected to the pack Aulus yuschim input of the first signal analyzer, the second switch and signals the selector 11 March pbUsylok.

A disadvantage of this device is low reliability.

The closest to the invention according to the technical solution is a device for automatic registration of radio telegraph signals, comprising a clock generator, an input matching unit, a trigger, a decoder, a modulo two, a receiving register, the first counter, the output of which is connected to the input of the display unit G 2 J

However, this device has a low speed registration signals

The purpose of the invention is to increase the speed of registration.

The goal is achieved by the fact that in a device for automatic registration of radio-telegraphic signals, containing a clock generator, an input matching unit, a trigger, a decoder, a modulator two, a receiving register, the first counter, the output of which is connected to the input

2

display unit, four AND elements, three frequency dividers, two control units, second and third counters, even pulse selection unit, odd pulse allocation unit, switch, reference combination sensor, time sensor and pulse shaper, whose output is connected to the first input of the block are entered in the even pulses, with the first 1 INPUT of the odd pulses extraction unit and with the first input of the first frequency divider, the output of which is connected to the second input of the even pulses allocation unit and with the second input of the allocation unit Optical pulses, the output of which is connected to the first input of the first element I, the second input of which is connected to the output of the modulo two adder, the first input of which is connected to the output of the receiving register, the first input of which is connected to the output of the input matching unit and to the trigger input, the first output of which connected to the first input of the second element And, the second input of which is connected to the output of the clock pulse generator and to the first input of the third element And, the output of which is connected to the first input of the second frequency divider, output which is connected to the first input of the second counter, the output of which through the first control unit is connected to the first input of the third frequency divider, the second input of which is connected to the second input of the second frequency divider, to the second input of the first frequency divider, to the second input of the second counter and to the output of the first element And, moreover, the output of the even pulse selection block is connected to the automatic input of the receiving register and to the input of the third counter, the output of which is connected to the first input of the switch and to the input of the decoder, the output of which connected to the first input of the fourth element I and to the input of a time sensor whose output is connected to the second input of the fourth element I whose output is connected to the first input of the first counter, the second input of which is connected to the output of the second control unit whose input is connected to the output of the first counter The sensor of the reference combination is connected to the second input of the switch, the output of which is connected to the second input of the modulo two adder, the second output of the trigger is connected to the second input of the third element I, and the output of the second element That is connected to the third input of the third frequency divider, the output of which is connected to the input of the pulse shaper. The drawing shows a structural diagram of the proposed device. The device for automatic recording of wireless telegraph signals contains an input matching unit 1, an indication unit 2, a trigger 3, the first, second, third and fourth elements AND 4-7, an 8-clock pulse generator, the first, second and third frequency dividers 9-11, a time sensor 12, an even pulse extraction unit 13, an odd pulse separation unit 14, first, second and third counters 15-17, a reference combination sensor 18, an adder 19 modulo two, a reception register 20, first and second blocks 21 and 22 control, formaker 23 pulses, switch 24, desh ifrator 25. The device works as follows. The operation of the device is considered on the example of receiving a signal of urgency of messages, which is a combination of LU, LU. After such a sign is the urgent message itself. The difficulty of automatic registration is that the information transfer rate is unknown in advance, i.e. the synchronous registration method is not applicable here, which means asynchronous registration is necessary, since only the signal structure is known in advance. And registration is necessary, starting with the first character. The device applies the principle of asynchronous reception of a given code combination with self-learning on the first element of a combination, and its algorithm can be simplified as follows: reception code 1 474 combination; training; pole comparison with the reference combination; a conclusion about the conformity of the received and supporting combination; activation of signaling and actuating devices. On switch 24, a code corresponding to b is written, i.e.: 1 1 1 IIQ4 II 11 iin Stumps (At h) P And tiiii 1 H. Generator output 8 clock pulses closed, trigger 3 of the learning circuit is set to O. Sensor 12 time does not work. The receiving signal, which is a sequence of 1 tonal frequency bursts (the frequency of a tone is chosen by the operator, usually 600 Gu, 1, 5 kHz) in the input matching unit 1 from the tonal bursts, is converted into rectangular DC bursts. Then comes the actual identification of the signal. The first parcel is equal to 3f in duration, hits trigger 3, which opens element 6, after which pulses, with a frequency much higher than the pulse frequency in the received code combination, after dividing into a split in the divider 10, the frequencies fall into counter 16, which counts the pulses from the generator 8 clock ij pulses until the first sequence in the received code combination is completed, since after its termination the trigger 3 closes the element 6 and the count ends. The first stage of signal registration occurs, i.e. determining the duration of an elementary parcel in its internal system units of time or training. Then the definition of a code combination begins. The pulses from the oscillator 8 clock pulses fall on the frequency divider 11 with a variable division factor, and from its output a sequence of pulses is obtained 2 times more often than in the received code combination, since the division ratio is specified during training. The pulse sequence then hits the pulse shaper 23, where they normalize in duration. Thereafter, the normalized sequence in the frequency divider 9 is divided into two, and in the even pulse extraction unit 13 and the odd pulse allocation unit 14 is divided into two pulse sequences, which are used as follows: an odd sequence to write the received combination to the receiving register 20 and to count the matches, and even for comparison and reset of the entire system in the event of a mismatch. The comparison is element-wise, i.e. a combination corresponding to b is recorded in the switch 24. The received combination is written element by element into the receive register 20 SYNCHRONOUSLY with odd-sequence pulses and added to the value of the elements of the reference combination on modulator 19 modulo two. In the case of coincidence the comparison continues and the element 4 forms impulse 1, which sets to O the elements of the device for determining the duration of the elementary parcel, i.e. dividers 9-11 of frequency and counter 16. In the event of coincidence, counter 17 increases its rate by 1. After the whole character b is received and recognized, the system is reset, only counter 15 stores in memory the number of received b, now number is one. Then the whole process is repeated again and so on until counter 17 is counted to three, after which the display unit 2 is turned on.

Since the device is connected directly to the output of the auditory radio channel in which, as is well known, the level of interference is very large, some of the signs, and they are transmitted 6 times, may be affected by interference. For the purpose of recording, the number of received matches is stored in the device’s memory and does not erase (if, after some number of received characters, for example, after two, one character will be affected by interference. Anyway, if the third character does not appear immediately after the first two, it will be registered and the system will turn on the alarm and actuators, however, with such an arrangement of reception, false positives are possible, for example, if there are three b in some text within a certain period of time.

For this purpose, a time sensor 12 is applied, which starts working immediately upon receiving the first parcel of the sign, and ends and resets to O counter 15 via the TCZ DGSHKM. for example, the average transmission time of six characters at minimum speed using the Morse code sensor P-010)

The operation of the proposed device is considered for the case of receiving the urgency signal Lj Lb, however, if necessary, any other combination can be chosen to register any signal, for example, SOS, the call sign of the radio station, etc. In this case, a different initial combination is selected in the sensor of the reference combination.

Thus, the introduction of new blocks allows to increase the reliability and reliability of hearing radio-telegraph messages, especially of short duration, by increasing the speed of training and adaptation of the transmission speed with virtually any change, allowing one radio operator to simultaneously control the operation of several radio networks.

Claims (1)

DEVICE FOR AUTOMATIC REGISTRATION OF RADIOTELEGRAPHIC SIGNALS, comprising a clock generator, an input matching unit, a trigger; a decoder, an adder modulo two, a reception register, a first counter, the output of which is connected to the input of the display unit, characterized in that, in order to increase the recording speed, four I elements, three frequency dividers, two control units, a second and third counters are introduced, an even pulses extraction unit, an odd pulses allocation unit, a switch, a reference combination sensor, a time sensor and a pulse shaper, the output of which is connected to the first input of the even pulses extraction unit, with the first input of the odd allocation unit pulses and with the first input of the first frequency divider, the output of which is connected to the second input of the block of even-pulse extraction and with the second input of the block of the allocation of odd pulses, the output of which is connected to the first input of the first element And, the second input of which is connected to the output of the adder modulo two , the first input of which is connected to the output of the receiving register, the first input of which is connected to the output of the input matching unit and to the input of the trigger, the first output of which is connected to the first input of the second element And, the second input of which о is connected to the output of the clock generator and to the first input of the third AND element, the output of which is connected to the first input of the second frequency divider, the output of which is connected to the first input of the second counter, the output of which through the first control unit is connected to the first input of the third frequency divider, the second the input of which is connected to the second input of the second frequency divider, to the second input of the first frequency divider, to the second input of the second counter and to the output of the first element AND, and the output of the unit for even pulses with connected to the second input of the receiving register and the input of the third counter, the output of which is connected to the first input of the switch and to the input of the decoder, the output of which is connected to the first input of the fourth element And the input of the time sensor, the output of which is connected to the second input of the fourth element And, the output which is connected to the first input of the first counter, the second input of which is connected to the output of the second control unit, the input of which is connected to the output of the first counter, the output of the reference combination sensor is connected to the second input of the commutator the output of which is connected to the second input of the adder modulo two, the second output of the trigger is connected to the second input of the third element Y, and the output of the second element And is connected to the third input of the third frequency divider, the output of which is connected to the input of the pulse shaper.