SU1714813A1 - Tandem office communication system controller - Google Patents

Abstract

The invention relates to telecommunications. The purpose of the invention is to improve the accuracy and end station stability of the control. The device contains at each end stage decoder 1, encoder 2, switching unit 3, driver 4 request signals, indication unit 5 and regenerator 4, and at each intermediate station - switching unit, two regenerators, encoder, decoder, register, alarm detector, control unit, sync signal decoder, address decoder, command checker and. command decoder. The telecontrol signal is recorded in the register and at the same time through the switching unit enters the input of encoder 2 and then enters the input of the regenerator modulation. 1 hp f-ly, 3 ill. SPs

Description

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The invention relates to telecommunications and can be used for telecontrol of a communication system with intermediate stations.

The purpose of the invention is to improve the accuracy and stability of the control.

Figure 1 shows the structural electrical circuit of the terminal station of the device; figure 2 - diagram of the intermediate station device; FIG. 3 is a structural electrical circuit of the control unit.

The device for the telecontrol of the intermediate stations of the communication system contains at each end station (FIG. 1) a decoder 1, an encoder 2, a switching unit 3, a driver 4 of the interrogation signals, an indication block 5 and a regenerator 6. The FIG. 1 also shows direct generators. 7 and the reverse 8 on the transmission system of the communication system. At each intermediate station (Fig. 2), the device comprises a switching unit 9, regenerators 10 and 11, encoder 12, decoder 13, register 14, alarm signal detector 15, control unit 16, sync decoder 17, address decoder 18, check unit 19 commands and decoder 20 commands. In addition, FIG. 2 also shows regenerators of forward 21 and reverse 22 transmission directions.

The control unit 16 (FIG. 3) contains AND elements 23-26, inverters 27-29, elements OR 30-32, AND-NE element 33, shaper 34 of trigger fronts, trigger 35, frequency divider 36, and decoder 37.

The device works as follows.

In the case when the first terminal station is the master and the second is the slave (FIG. 1), the switching unit 3 at the first terminal station is switched so that it passes the signal from the inquiry generator 4 through the encoder 2 to the amplitude modulation input of the transmission regenerator 7 , causing amplitude modulation of the information signal at the output of the regenerator 7. This signal, having passed through the communication system, goes to the intermediate station (FIG. 2), namely to the input of the regenerator 21, from the demodulation output of which the coded telecontrol signal blunt to the input of switching unit 9 to the input of the regenerator 11, from the outputs of which the encoded telecontrol signal and the clock frequency signal arrive at the inputs of the decoder 13, the output of which extracts the telecontrol signal, which is fed to the information input of the register 14, to the clock frequency input of which The frequency from the second output of the regenerator 11 is shifted relative to the leading edge of the signal at the information input of the register 14. Ensures maximum noise immunity when recording the telecontrol signal in re 14. The telecontrol signal is recorded in register 14 and simultaneously from its output is fed to the input of switching unit 9 and then to the input of encoder 12, to another input of which the clock frequency of the corresponding phase is received from the output of the regenerator 11. The signal from the output of encoder 12 is fed to the input of the block 9 switching, from the output of which it is fed to the modulation input of the regenerator 21, causing amplitude modulation of the information signal at its output. This process occurs until the signals at the outputs of the decoder 17 of the clock signal, the decoder 18 of the address with the address corresponding to the given data are not simultaneously synchronized with the TC. intermediate station, and block 19 command verification. These signals, coming through the inputs of the control unit 16 to the first, second and third inputs of element 25 (fig. 3), cause a signal to form at its output, which by a pulse drop triggers the driver 34, the output signal of which triggers the trigger 35. At the same time The output of the NAND 33 element, which is the fourth output of the control unit 16, generates a command decoding resolution signal. And, after switching on the device, the register 14 through the switching unit 9 is connected to the regenerator 22, it will be connected by a command to the regenerator 21. The control signals from the direct and inverse outputs of the trigger 35 through the first and second output of the fourth group of outputs go to the inputs of the switching unit 9 . At the same time, the signal from the output of pulse generator 34 is fed through switching unit 9 to the input of parallel register write 14, as a result of which alarms from the outputs of detector 15 of alarm signals are recorded in parallel to register 14 and simultaneously the response signal goes to input of switching unit 9 and then to input the encoder 12, and from the output of the encoder 12 through the switching unit 9 to the input of the regenerator 21. After the end of the response signal, which is determined by divider 36 by counting the clock frequency periods in the response signal, the output the decoder 37 generates a pulse, which through the second output of the block 16 is fed to the input of the detector 15 alarm signals, causing it to be reset, and simultaneously through the inverter 29 is fed to the input of the trigger 35; causing it to switch. As a result of the second switching of the trigger 35, the block 9 is controlled in such a way that it passes the signal to the input of the encoder 12c of the output register 14, And the signal from the output of the encoder 12 through the block 9 switches to the input of the regenerator 21, From the output of the regenerator 21 through the communication system and others intermediate stations the information signal modulated by the telecontrol signal is fed to the input of the regenerator 8 (Fig. 1) of the second terminal station, from the first output of which is the output of the demodulator, the telecontrol signal is fed to the input of the regenerator 6 t elecontrol. From the output of which the selected clock frequency is fed to the input of the decoder 1 and the input of the display unit 5, and from the other output the encoded telecontrol signal is fed to the input of the decoder 1 and the input of the switching unit 3. From the output of decoder 1, the decoded telecontrol signal enters display unit 5, where the signal is analyzed and alarm signals are displayed. Simultaneously coded telecontrol signal goes through the switching unit 3 to the modulation input of the transmission regenerator 7 and causes amplitude modulation of the information signal at its output. This modulated signal through the communication system enters the second input of the regenerator 22 (FIG. 2) of the intermediate station, from the output of the demodulator of which the encoded telecontrol signal through the switching unit 9 enters the input of the regenerator 10-telecontrol, where it is also regenerated without decoding and encoding from the output the regenerator 10 telecontrol through the switching unit 9 is fed to the input of the regenerator 22. causing amplitude modulation of the information signal at its output. This signal enters the communication system and through intermediate stations enters the input of the station regenerator 8 reception (figure 1), from the output of which the demodulated telecontrol signal enters the input of the regenerator 6 telecontrol, from the output of which the selected clock frequency is fed to the input of the decoder 1 and input the display unit 5, and from another output of the regenerator 6, the telecontrol signal is fed to another input of decoder 1, from the output of which the decoded telecontrol signal is fed to the input of the display unit 5, where the signal is analyzed and and ditsiruyuts alarm signals. Similarly, the device works when the first terminal station is known and the second one is master,

In the case when the intermediate station, following the station shown in figure 2, in the opposite direction

there was a damage to the telecontrol device in the presence of remote power, there is no telecontrol signal at the input of the regenerator 10 telecontrol, and

its output generated an alarm signal which, arriving at the input of control unit 16, is fed to the input of the element OR 31 (Fig. 3), from its output - to the first inputs of the elements OR 30 and 32 and through the first inverter

0 27 to the inputs of the elements And 23 and 24, With this, the logic levels O, T, 1, O will be formed at the outputs of the elements 24 and OR 30, OR 32, and 23 These levels, arriving at the corresponding conclusions of the ninth group of inputs of the block 9 switching, control its operation. Then the telecontrol signal from the output of the encoder 12 through the switching unit 9 is fed to the modulation inputs of the regenerators 21 and 22, Thus

0, the status information of the intermediate station is transmitted to the first and second i terminal stations,

In the event that a malfunction occurs in the forward direction, the device operates in the same way, but the second station will be the master.

Similarly to the cases considered, the device operates when the command is given Loop. In this case, from the first output

0 of the decoder 20 commands receives a control signal through the control unit 16 to the input of the element OR 31, Then the device operates similarly to the second case of operation,

5Fore Mule Invention

1, A device for monitoring the intermediate stations of the communication system, comprising at each terminal station a switching unit and serially connected request signal generator and display unit, and at each intermediate station a synchronizing signal decoder and serially connected alarm detector, register, address decoder,

5 control unit and switching unit, the second output of the control unit is connected to the first input of the detector of alarm signals, the third output is connected to the second input of the register, the output of the decoder of the synchronization signal pod0 keys to the second input of the control unit, the clock input of which is combined with the clock input of the register, I distinguish at it so that, in order to increase the accuracy and stability of the control, they are introduced on each

5 end station encoder, the first and second inputs of which are connected respectively to the second and third output of the shaper request signals, and the output is connected to the first input of the switching unit, sequentially connected regenerator and

a decoder whose output is connected to the second input of the display unit, the third input of which is connected to the second input of the decoder and the second output of the regenerator, whose input is the input of the signal from the regenerator of the reverse transmission direction of the communication system, and the first output connected to the second input of the switching unit, output which is the input of the regenerator of the forward direction of transmission of the communication system, and at each intermediate station there is a command verification unit, a command decoder, an encoder, a first regenerator, the second connected in series a regenerator and a decoder, the output of which is connected to the third input of the register, the second group of outputs of which is connected to the corresponding inputs of the sync signal decoder.

the last output from this second group of outputs is connected to the second input of the unit

switching, the third group of outputs is connected to the first relevant inputs of the command decoder and command checker, and the first output of this third group of outputs is connected to the third input of the switching unit, the fourth and fifth inputs of which are connected respectively to the first and second outputs of the command decoder and the third and the fourth inputs of the control unit, the fifth input of which is connected to the third output of the command decoder, the second input of which is connected to the fourth output of the control unit, the sixth input of which is connected to the output the command check terminal, the seventh input is connected to the first output of the first regenerator and the second input of the alarm detector, the third and fourth inputs of which are the inputs of signals from the forward and reverse transmission regenerators of the communication system, the fifth input is connected to the eighth input of the control unit and the second output of the second regenerator, the third output of which is connected to the register clock input, the fourth output through the encoder is connected to the sixth input of the switching unit, the first output of which is connected to the second input of the encoder, The second and third outputs are respectively connected to the inputs of the first and second regenerators, the fourth and fifth outputs are the inputs of the regenerators of the forward and reverse directions of transmission of the communication system, the seventh and eighth inputs of the switching unit are the inputs of signals from the regenerators of the forward and reverse directions of transmission communication systems.

2, The device according to claim 1, in that the control unit contains the first element AND and the first element OR, the second element OR, the first inverter, the second element AND and the third element OR, the second inverter and the NAND element connected in series, the third element AND connected in series, the trigger pulse driver, the trigger and the fourth element AND in series, the frequency divider, the decoder and the third inverter, whose output is connected to another input for a trigger whose direct output is connected to the first input of the fourth element AND, the second input of which is combined with the input of the second inverter, the output of the third element AND is connected to another input of the NAND element and another input of the frequency divider, the output of the second element OR is connected to other inputs the first and third elements OR, and the output of the first inverter is connected to the first input of the first element AND, the first, second and third inputs of the third element AND are the first, upper and sixth inputs of the control unit, the fourth input, respectively which is the second input of the first element AND, the fifth, seventh and eighth inputs are respectively the first, second and third inputs of the second OR element, the third input is another input of the second AND element, the first outputs are the outputs of the first and second AND elements, the first and third elements OR, the forward and inverse outputs of the trigger, the second output is the output of the decoder, the third output is the output of the trigger edge generator, the fourth output is the inverse output of the NAND element, and the clock input is input of the second inverter.

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Claims (2)

Claim 1. A device for monitoring intermediate stations of a communication system, comprising, at each terminal station, a switching unit and series-connected request signal generator and indication unit, and at each intermediate station, a clock decoder and series-connected alarm signals detector, register, address decoder, control unit and switching unit, the second output of the control unit is connected to the first input of the alarm detector, the third output is connected to the second input of the register, the output of the sync decoder la is connected to the second input of the control unit, the clock input of which is combined with the register clock input, wherein. that, with the aim of increasing the accuracy and stability of control, an encoder has been introduced at each terminal station, the first and second inputs of which are connected to the second and third outputs of the query signal generator, respectively, and the output is connected to the first output of the switching unit, a regenerator and a decoder are connected in series, the output of which connected to the second input of the display unit, the third input of which is connected to the second input of the decoder and the second output of the regenerator, the input of which is the signal input from the reverse direction regenerator communication system, and the first output is connected to the second input of the switching unit, the output of which is the input of the regenerator of the direct direction of transmission of the communication system, and at each intermediate station there is a command check unit, a command decoder, an encoder, a first regenerator, a second regenerator and a decoder connected in series, whose output is connected to the third input of the register, the second group of outputs of which is connected to the corresponding inputs of the clock decoder, ^ the last output from this second group of outputs is connected to the second the input of the switching unit, the third group of outputs is connected to the first corresponding inputs of the command decoder and the command verification unit, and the first output of this third group of outputs is connected to the third input of the switching unit, the fourth and fifth inputs of which are connected respectively to the first and second outputs of the command decoder and the third and the fourth inputs of the control unit, the fifth input of which is connected to the third output of the command decoder, the second input of which is connected to the fourth output of the control unit, the sixth input of which is connected connected to the output of the command check unit, the seventh input is connected to the first output of the first regenerator and the second input of the alarm detector, the third and fourth inputs of which are signal inputs from the regenerators of the forward and reverse directions of the communication system, the fifth input is connected to the eighth input of the control unit and the second output the second regenerator, the third output of which is connected to the clock input of the register, the fourth output through the encoder is connected to the sixth input of the switching unit, the first output of which is connected to the second input to the encoder, the second and third outputs are connected respectively to the inputs of the first and second regenerators, the fourth and fifth outputs are inputs of the regenerators of the forward and reverse directions of the transmission of the communication system, the seventh and eighth inputs of the switching unit are inputs of signals from the regenerators of the forward and reverse directions of the transmission of the communication system . 2. The device according to claim 1, with the exception that, the control unit comprises series-connected first element AND and first element OR, series-connected second element OR, first inverter, second element AND and a third OR element connected in series to the second inverter and the AND-NOT element. series-connected third element And, driver of the fronts of the start pulses, trigger and series-connected fourth element And, frequency divider, decoder and third inverter, the output of which is connected to another input of the trigger, the direct output of which is connected to the first input of the fourth element And, the second input of which is combined with the input of the second inverter, the output of the third AND element is connected to another input of the AND-NOT element and another input of the frequency divider, the output of the second OR element is connected to other inputs of the first and three of the first OR element, and the output of the first inverter is connected to the first input of the first And element, the first, second and third inputs of the third And element are respectively the first, second and sixth inputs of the control unit, the fourth input of which is the second input of the first And element, the fifth, seventh and the eighth inputs are, respectively, the first, second and third inputs of the second OR element, the third input is the other input of the second AND element, the first outputs are the outputs of the first and second AND elements, the first and third AND elements And, the direct and inverse outputs of the flip-flop, the second output of the decoder is output, the third output - the output trigger pulse shaper fronts, fourth output is the inverted output of AND-NO element, and a clock input is the input of the second inverter. 28 33