SU1555877A1 - Device for monitoring serviceability of regenerator - Google Patents

Abstract

The invention relates to telecommunications. The purpose of the invention is to improve the accuracy of control. For this, the device for monitoring the health of regenerators contains at the serviced regeneration station (ORP) 1: block 2 of signal combining, selector 3 of control signals, analyzer 4 of response signals, block 5 of signaling and analyzer 6 of address, and at each unattended regeneration point (NPP) 7 : blocks 8 and 13 of the combination of signals, regenerators 9 and 14, extractors of 10 and 15 clock frequencies, detectors of 11 and 16 errors, integrators 12 and 17, modulator 18, restorers of code 19 and 20, switches 21 and 22, al OR 23 and rr 24 code combinations. In each NOR 7 in the regenerators, linear distortions are corrected by the cable sections in the information signal. In addition, in each NRP 7, the errors occurring in the information signal due to the operation of regenerators are constantly monitored. ODP 1 separates the information flow and the control signals, and indicates the damage number of the IUU 7 and the nature of the damage. 2 Il.

Description

The invention relates to telecommunications and can be used for remote monitoring of the health of linear regenerators of digital transmission systems.

The purpose of the invention is to increase the accuracy of control.

In Fig.-1 presents a structural electrical diagram of the proposed device; figure 2 - timing diagrams explaining the operation of the device.

The device for monitoring the health of regenerators contains 1 unit 2 signal combiners, a separator 3 control signals, an analyzer 4 response signals, a signaling unit 5 and an analyzer of b address, and each unattended regeneration unit (NRP) 7 contains the first one block 8 combining signals, the first regenerator 9, the first allocator 10 clock frequency, the first detector 11 errors, the first integrator 12, the second block 13 combining signals, the second regenerator 14, the second amplifier 15 clock frequency, the second d error vector 16, second integrator 17, modulator 18, first 19 and second 20 code restorators, first 21 and second 22 switches, OR element 23 and code combination generator 24, each code restorer 19 and 20 containing decoder 25 and encoder 26, and PIU and SLF 7 are connected by the reverse direction 27 of the linear path.

The device operates as follows.

At the transmitting stations of the forward and reverse paths, as is known, the useful information signal is converted before it is fed to the path c. using one of the linear codes. The converted signal is fed to the input of the path and, passing through all the regenerators of the main line, gets to the output of the path of the receiving station, where the information signal is inversely converted and then processed.

In each NRP 7 in the regenerators there is a correction of the linear distortions introduced by the cable sections into the information signal. In addition, in each NRP 7, the errors that occur in the information signal due to the operation of the regenerators are constantly monitored. If the value of the error coefficient does not exceed the specified limits, then the logic 0 signal is present at all outputs of the integrators 12 and 17. Therefore, the output of the OR 23 element also contains the logic 0 signal and the code combinations are not read from the generator 24. At the same time, the logical “0” signal is supplied to the control inputs of the switches 21 and 22. In this case, information is transmitted directly from the first outputs of the clock regenerators of the digital transmission system, which is necessary to ensure the operation of the regenerators 9 and 14 and the error detectors 11 and 16.

The clock signal as a reference signal is used to form intervals for calculating the error coefficient of the information signal in the integrators 12 and 17. In addition, the clock signal of the isolator Yu is supplied to the input of the generator 24 and is used in it to generate the clock signals of the parallel recording, the serial clock speed read, and the local oscillator frequency for the modulator 18.

Since the control of the parameters of the forward and reverse paths is carried out the same way, the operation of the device can be considered on the example of damage that occurs, for example, in the direct path. If damage occurs, i.e., if the error coefficient exceeds one of the specified thresholds, a logical 1 signal appears at one of the information and control outputs of the integrator 12.

The logical 1 signal is supplied to the control input of the switch 21, the output of the switch 21 is switched to the second input associated with the output of the code restorer 19.

Thus, the information signal in the linear code from the first output of the first regenerator 9 is supplied to block 8 through the first code reducer 19. The recovery process of the Linear code can be illustrated using time charts (figure 2). The timing diagram of FIG. 2a shows an example of a fragment of an information signal arriving at a code conversion at a transmitting station. On Fig shows an information signal, converted, for example, using a code with alternating pulse polarity (NPI). This is a three-level signal, providing an alternation of polarity of logical 1, in place of logical 0 in the information signal in the code of the NPI interval. The signal in the linear code, passing through all the URF 7 of the linear path, is fed to the receiving station, where the information signal is inversely converted. If the equipment of the linear path is serviceable, then at the output of the linear path after the conversion there is a two-level structure and no signal signal occurs with the diagram.

If damage occurs in any of the NRF 7, a violation of the linear Code occurs (Fig.2c). In this case, in the decoder 25 of the code recovery unit 19 of the damaged NRF 7, the linear code is converted into a two-level signal. The conversion takes into account the violation of the linear code (Fig.2g). The obtained two-level pulse sequence, which differs from the original one (Fig. 2a), is again converted to the selected linear code in the encoder 26 of the reducing agent (Fig. 2e). The information signal from the output of the reducing agent is the input of the block from the output path, the information signal with the corrected linear code is transmitted, then in all the URF 7, which are in the linear path behind the damaged URT 7, the control devices are in the initial state, i.e. an information signal is transmitted from the first output of the first regenerator 9, the input of the switch 21 to the signal in accordance with fig. 2a, i.e. no changes in the code19 information are supplied to the on-switch 21 and then to the8 on the linear path. Since the damaged URP 7 in line through the first block 8.

In a damaged URF, an increase in the error coefficient is determined using the error detector 11 and the integrator 12. The information arising in the integrator 12 from the information outputs in a parallel code is written to the lower bits of the register and eliminating the output, the signal is fed

1555877 6 nerator 24 under the influence of clock pulses of parallel recording. '* Logical ”1 from the control output of the first integrator 12 through the OR element 23 puts the register of the generator 24 into sequential read mode. The information is read from the highest level of the register of the generator 24. The speed of reading information is determined by the · pulse repetition rate of sequential reads. Reading of information is carried out constantly, up to damage. From the second torus 24, the local oscillator to the modulator 18.

Thus, from the information output of the generator 24 to the information inputs of the modulator 18 a digital signal is supplied containing the address information of the part. The address part carries information about the number of the faulty UHF /. The information part is about the threshold and direction of transmission of the linear (nature of damage) path. The digital signal modulated in modulator 18 is fed to the second inputs of blocks 8 and 13, where the useful information signal is combined with digital control signals. Having passed along the linear path, this information is fed to the terminal control devices of both the forward and reverse paths.

In PPR 1 there is a separation of the information flow, and control signals in the block. Then, in the isolator 6, the control signals are amplified and these signals are converted into bipolar rectangular pulses, which are fed to the inputs of the analyzer 4 of the response signals and address analyzer 6. Under the influence of the signal analyzer 4 and 6 in the display unit 5 is switched damaged rooms ¹ dennogo NPF 7 and nature of the damage.

After the damage is restored at the information and control outputs of the integrator 12 sets-? logical signal O. Therefore, the first switch 21 is returned to its original state, disconnecting the first code restorer 19 from the second input of the switch 21. The information signal from the first output of the first

Ί generator 9 is fed back to the first input of the switch 21. At the output of the OR element 23, a signal is set on logical O.

The control device is again ready to receive information.

Similarly to the described operation of the monitoring device when damage occurs in the second regenerator 14.

Claims (1)

Claim A device for monitoring the health of regenerators, which contains, at a serviced regeneration point, a signal combining unit connected in series, the input of which is the output of the reverse direction of the linear path, a signal separator, a signal analyzer * of response signals and an alarm unit, and at each unattended regeneration point - the first and second signal combiners, connected in series with the first regenerator, the first clock splitter, the first error detector, the first integrator and ne a second switch, serially connected a second regenerator, a second clock isolator, a second error detector and a second integrator, the second output of the first clock isolator connected to the second input of the first regenerator, the second output of which is connected to the second input of the first error detector, the second output of the second clock isolator frequency is connected to the second input of the second regenerator, the second output of which is connected to the second input of the second Error Detector, and the output of the second signal combining unit i is an input of the reverse direction of the linear path, characterized in that, in order to increase the accuracy of control, an address analyzer is introduced at the serviced regeneration point, the input and output of which are connected respectively to the output of the control signal isolator and to the second input of the signaling unit, and at each unattended regeneration point - the first and second code restorers, the second switch and the OR element connected in series, the code combination generator and the modulator, while the first output of the first regenerate Ora is connected to the first signal input of the first switch and to the input of the first code restorer, the output of which is connected to the second signal input of the first switch, the output of which is connected to the first input of the first signal combining unit, the first output of the second regenerator is connected to the first signal input of the second switch and to the input the second code restorer, the output of which is connected to the second signal input of the second switch, the control input and output of which are connected respectively to the control output the second integrator and with the first input of the second signal combining unit, the second input of which is connected to the second input of the first signal combining unit and with the modulator output, the control outputs of the first and second integrators are connected respectively to the first and second inputs of the OR element, the third output of the first clock selector is connected to the second input of the first integrator and to the clock input of the code combination generator, and the third output of the second clock selector is connected to the second input of the second integrat pa, the signal outputs and signal outputs of which the first integrator connected to respective signal inputs of the generator codewords.