SU1042194A2 - Device for finding damaged section of telegraph path - Google Patents

Abstract

DEVICE FOR DETECTING A DAMAGED SECTION OF A TELEGRAPHIC TRACT BY aut. St. 944119, characterized in that, in order to reduce the detection time, by analyzing the current information on telegraph system locks, serially connected blocking receiver, an additional signal analyzer, line number generator are introduced into it. a registration signal generator and a memory block, while the signal inputs of the blocking receiver are connected to the corresponding inputs of the measuring unit, the auxiliary output and the auxiliary input of the control unit are connected respectively to the control input and information output of the recording signal generator, the first signal input of which is combined with the input of the line number generator, the output of which is connected to the information inputs of the memory block and the receiver of the blocking signals, The input input of which is connected to the input of the memory unit, the output of which is connected to the second input of the additional signal analyzer {and the second signal input of the registration signal generator is the input of the current time signals.

Description

From € 9, the test relates to telecommunications and can be used in a telegraph communications maintenance system to locate a faulty portion of the telegraph path. According to the main author. swith 944119 a device for detecting a damaged portion of the telegraph path containing a concentrator, a sensor unit, the first and second outputs of which are connected respectively to the first input of the control unit and to the first input of the first switch, the first output of which is connected to the second control the first and second outputs of which are connected respectively to the second and third inputs of the switch, and the third output is connected to the input of the control and measuring unit, the channel number converter, Marker signals, the signal conditioner in the call, the second switch, the element IL comparator, the signal analyzer, the de scrambler and the receiver of the channel number, the hub output through the second switch connected to the first input of the signal analyzer and the first input of the channel number receiver, the second input which is connected to the first output of the signal analyzer, the second and third outputs of which are connected respectively to the second input. the second switch and to the fourth input of the first switch, the second output of which is connected to vs 1 to the input of the signal analyzer, the fourth output of which is connected to the third input of the control unit, the fourth and fifth outputs of which are connected respectively to the first input of the decoder I to the third hole of the second switch, the second output of which is connected to the fourth input of the control unit the decoder, the third input of which is connected to the output of the channel number receiver, and the output is connected to the fifth input of the first switch, the sixth and seventh outputs of the control unit through the converter The channel's ohmer and the call signal shaper are respectively connected to the inputs of the OR element, the output of which is connected to the fourth input of the second switch, another output of the channel number converter is connected to the fifth input of the control unit through the driver of the marking signal, the eighth and ninth outputs are connected respectively to to the other input of the marking driver and to the other input of the comparator {Ij. However, the known device requires considerable time to detect the damaged area. The purpose of the invention is to reduce the detection time by analyzing the current information on telegraph blocking systems. The goal is achieved in that a device for detecting a damaged section of the telegraph path, comprising a hub, a sensor unit, the first and second outputs of which are connected respectively to the first input of the control unit and to the first is of the first switch, the first output of which is connected to the second input of the control unit , the first and second outputs of which are connected respectively to the second and third inputs of the first switch, and the third output is connected to the input of the control measuring unit, the number converter to signal generator, marking signal shaper, second switch, OR element, comparator, signal analyzer, decoder and channel number receiver, the hub output being connected to the first input of the signal analyzer and to the first receiver input of the channel number through the second kcmm switch connected to the first output of the signal analyzer, the second and third outputs of which are connected, respectively, to the second input of the second switch and to the fourth input of the first switch 1 of the switch, the second output to connected to the second input of the signal analyzer, the fourth output of which is connected to the third input of the control unit, the fourth and fifth outputs of which are connected respectively to the first input of the decoder and to the third input of the switch, the second output of which is connected to the fourth input of the control unit the second input of the decoder, the third input of which is connected to the output of the channel number receiver, and the output is connected to the fifth input of the first switch, the sixth and seventh outputs of the control unit through the pre channel number generator and call signal generator. Correspondingly, they are connected to the inputs of the OR element, whose output is connected to the fourth input of the second switch, another output of the channel number converter is connected to the fifth input of the control unit, the output and the ninth output of the channel number converter connected, respectively, to another input of the mark.ovki signal generator and to another input of the comparator, the series-connected receiver of blocking signals, an additional analyzer with ignals, line number adjuster, registration signal generator and memory block, while the signal inputs of the blocking receiver are connected to the corresponding inputs of the control and measuring unit, the additional output and the auxiliary input of the control unit are connected to the control input and information output of the signal conditioner registration, the first signal input of which is combined with the input of the line number generator, the output of which is connected to the information inputs of the memory unit and the receiver a lock signal control input which is connected to vhodszh memory unit, whose output is connected to a second input of the additional signal analyzer, and the second signal input of the registration signal is input to the current-time signals. Fig. 1 shows a structural electrical circuit of the device; in fig. 2 - control and measuring unit; in fig. 3 - blocking signal receiver; in fig. 4 - line number driver; in fig. 5 - additional signal analyzer; in fig. 6 shaper registration signals. The device for detecting the cutting of the Daisy section of the telegraph path contains a control unit 1, a control measuring unit 2, a sensor unit 3, a first switch 4, a hub 5, a marking device 6, a marking number converter 7, an OR element 8, a forming device 9 call signal, second switch 10, comparator 11, torus 12 signals, receiver 13 of number / channel ,, decoder 14, receiver 15 of blocking signals, additional analyzer 16 signals, generator 17 of recording signals, memory block 1 and driver G9 of the number The control and measuring unit 2 contains a block of 20 measuring devices, an alarm panel 21, porous control elements 22 and a telegraph raster apparatus (TA) 23. A lock signal receiver 15. contains n input triggers 24, And inverters 25, third 26 and fourth 27 switches, a decoder of binary code 28, first 29 and second elements I. Shaper 19 line numbers contains a generator of 31 pulses of the third element And 32, trigger 33 and counter 34. Additional signal analyzer 16 contains the fourth 34 and n -. The first 36 elements And and the first additional element OR 37. The imaging signal generator 17 contains a code converter 38, a distributor 39 of parcels, a prohibition element 40, a fourth element And 41, a second additional element OR 42, and an interval counter 43. The device works as follows. The control unit 1 selects the number of the telegraph path to be occupied, view it, connect the control and measuring units and the sensor unit to the receive and transmit chains of the selected path or its individual sections, and also provides control over the algorithm of the device operation with automatic request (reset ) test signals on the selected telegraph (TG) channel. The first switch 4 provides various types of switching of the telegraph tract: the ability to connect to the telegraph tract without disturbance, communication (in parallel), the rupture of the tract and the connection to its separate sections (opposite occupation), as well as simultaneously with one of the above methods These TG channels for transmitting test signals through them. The second switch 10 provides a serial connection of the receive and transmit circuits of the service channels, respectively, to the inputs of the analyzer: 12 signals from the receiver 13 and to the output ode of the element OR 8, and also excludes the connection of service channel circuits .. Comparator 11 provides a signal when the information about the number of the occupied path direction coming from unit 1 and the information about the number of the service channel of this direction coming from the second switch 10 coincide. Decoder 14 provides conversion of information about the number of the telegraph path, coming from block 1 (with manual control) or from the second switch 10 and receiver 13 (with automatic query), into signals that provide control Leniye first-th switch 4. The device is installed on adjacent communication nodes. In manual control, in order to occupy the telegraph path, block 1 dials the number of this path, selects one or another type of its occupation, and also connects control and measuring unit 2 and block 3 of sensors to the selected portion of the telegraph path. The control and measurement unit 2 provides control of the selected portion of the telegraph path by distortion and errors in the test or arbitrary start-stop TjeKCTe transmitted at different speeds (50,100,200,50 actions and 100 times baud) by voltage, by the presence and duration of response switching station signals. In block 2, there is an alarm panel 21, on which alarm signaling circuits about locking the CT systems during underestimation of the signal level in the corresponding channels of the PM are received. The current information on optical locks is indicated by the indicators Н Т-Н. In addition, unit 2 includes a control telegraph unit (1A; 23, which is connected for visual control of a special test text transmitted by checking the TG channel for checking. In most cases, the unit 2 is sufficiently readable by measuring instruments and threshold 22, therefore, the load of the TA is small (on average it does not exceed 10–15 connections per day with a duration of no more than 1 min) and it is possible to use this TA to also register information about locks of tonal systems In this case, the mode switch in the control block i, which in the prototype provided the connection of the TA input to the receiving circuit of the controlled channel, should also ensure the switching and separation of information supplied from two sources to one TA This requirement is easily realized with the help of the contacts of the electromagnetic relay by organizing additional input and output in the control unit 1. The sensor unit 3 provides the transmission of test signals at speeds of 50, 100, 200, 50 actions. and 100 lawsuit Baud points, pressing - request for response signals, etc. For the conduct of service negotiations (request of a particular sensor, delivery of a request, etc.), a 5 service channel hub is used, which ensures the organization of service communication through service channels - on telegraph devices. To check the TG channel without the participation of the technical staff of the adjacent communication center, the number of this telegraph path is dialed and the path is taken counter to the receiving and transmitting circuits of the TG channel, the monitoring and measuring unit 2 and the output of the marking signal generator 6 are connected and pressed accordingly; Shih button (on the switch mode block 1). Further work on request - (reset) of test signals from the adjacent communication node is carried out automatically and proceeds as follows1. in the initial state, the second switch 10 sequentially connects the receive and transmit chains of service channels, respectively, to the input signal analyzer 12 and the receiver 13 and to the output of the element OR 8, transmitting simultaneously the information on this channel to the comparator 11 and the decoder 14. When you click block 1 of the button providing automatic inquiry, block 1 receives information about the number of the direction to xc laboratory 11 and the signal to the driver b. The comparator compares the information received from block 1 with the information received from the second switch 10, and if they match, it sends a signal to block 1, C of block 1, the second switch 10 receives a signal that stops the bypass counter of the second switch 10, which ensures retention switched circuits of reception and transmission of this service channel. Simultaneously, from block 1, a shaper 9 is sent to the driver 9, which enables the transmission of call signals, which from the driver 9 output through the OR element 8 and the second switch 10 enter the transmission channel of the service channel. The call signals to shaper 9 are different from the call signals from hub 5 when establishing a service call. At an adjacent site, a similar device (its operation will be discussed below), after receiving call signals, transmits call acknowledgment signals (similar call signals). The call acknowledgment signals are received from the service channel reception circuit through the second switch 10 to the signal analyzer 12, which analyzes them and, if the incoming signals match the reference, sends a signal to block 1. At block 1, the signal received at the input of the driver 9 is received and provided transmitting information on the channel number of the TG to the converter 7. As a result, the transmission of call signals from the generator 9 is stopped and information on the channel number of the TG from the output of the converter 7 is transmitted through the element OR 8 and the second switch 10 in the service channel transmission chain. The information from the output of the converter 7 comes in a start-stop telegraph code with a nominal wiring speed of 50 YoD, ensuring its passage through any telegraph channel (including the code-dependent channel). After transmitting information about the channel number of the TG from the converter 7, the shaper 6 receives a signal that, if there is a second signal from block 1, the transmitter from the shaper b output the marking signals

Marking signals from the driver b output go through block 1 to the transmission circuit of the tested TG channel. The transmission of marking signals provides increased noise immunity of the device, i.e. elimination of false occupancy of the TG channel in the case of. . distortion of the transmitted information about the channel number, since the TG channel on an adjacent communication node can occupy only if two types of information coincide (information about the Kaiala number and the presence of marking signals in the receive circuit of the given channel) is information about the health of the TG channel in this direction.

After a predetermined time interval, determined by the block 1 time selector, signals from the second switch 10 are removed from its outputs, and information sent to the converter 7. The second switch 10 releases the occupied service channel and starts operating in the initial state (successively service channel chains). From the output of the converter 7, the signal arriving at the input of the former, the signal of the latter stops the transmission of marking signals and ensures the transmission of the signal of the wall polarity, which ensures the transition of code-dependent channels to the telegraph mode.

The arrival of test signals from the adjacent communication link is monitored by the indicators of the control unit 2.

The operation of the device on an adjacent communication node (reception of signals) is as follows.

When the second switch 10 of the receive circuit of the service channel is connected, through which the call signals to the input of the signal analyzer 12 are received, a signal is received from the output of the latter to the second switch 10, which stops the counting bypass of the second switch 10 and ensures that the service, channel channel. The signal analyzer analyzes the incoming signals and, if they coincide with the reference signal, outputs a signal to block 1. From the outputs of block 1, signals are sent to the second switch 10, confirming that the switch is held on this service channel, and to driver 9, which provides signal transmission

for the device requesting test signals, the call acknowledgment signals for the device requesting the test signals. Upon termination of the call signals, the signal analyzer 12 inputs to the receiver 13 a signal enabling the receiver to receive information and the channel number of the TG, and switches to receiving marking signals from the first switch 4.

The receiver 13 receives and stores information about the number of the TG channel.

Information from the receiver 13 and information about the direction number from the output of the second switch 10 goes through the decoder 14 to the first switch 4, which commits the receiving circuit of this telegraph path to the second input of the signal analyzer (connected in parallel) and prepares channel occupation for transmission test signals.

When the marking signals arrive at the second input of the signal analyzer 12, the latter analyzes them and, when the marking signals coincide with the reference ones, outputs to the first switch 4 a signal that triggers it, which provides a break in the telegraph path, connecting the channel input to the sensor output of the test signals and remembers this condition.

After a predetermined time interval, defined by the temporary selector of block 1, the block 1 is reset and the prohibition is removed from the operation of the second switch 10.

To disconnect the test signals from the tested TG channel (automatic reset), the path number is also dialed and in block 1 the corresponding button is pressed.

In this case, the above described operation algorithm is implemented, with the exception of the transmission of marking signals (from block 1 to the imaging unit 6, a signal prohibits the transmission of marking signals).

A device on an adjacent node, having received a channel number, in the absence of marking signals, ensures that this channel is disconnected from the sensor of test signals (not shown).

In addition, when determining the required amount of control and determining the cause of the malfunction of the TG channels submitted for testing, the status information of the corresponding tone frequency (PM) channels is used, I registered - on the telegraph unit of block 2 using blocks 15-19.

Signal receiver 15 provides continuous monitoring of the signaling circuits (l-ft) about locking the TG systems and providing information to the analyzer 16 about the presence of locks and the current state of the input lines. The presence of a blocking signal on any of the inputs is fixed by the corresponding input trigger 24. Using switches 26 and 27, the status information of the flip-flops and input circuits (lines) are read alternately. The read sequence is determined by the line number received in binary code at the address inputs of the switches from the generator 19. As a result, if there is a lock on the output of the switch 26, the signal a in the absence (i.e., the input line in the initial state) the output of the switch 27. The output signals of the switches are delivered alternately to the output of the block through elements AND 29 and 30. The sequence is determined by the sampling signal coming from block 19. This signal is two time-separated pulses and comes in sync with Smoke number line. The reset of the input triggers to the initial state after the registration of the end of the blocking is carried out with the help of a binary code decoder 28 to the unitary one upon a command from the generator 17 of the registration signals. Shaper 19 line numbers Provides cyclical sequential line numbers from 1 dP and forming synchronously with each number of test signals. In the absence of a stop signal from the additional signal analyzer 16, the clock pulses from the generator 31 through the AND 32 switch the counting trigger 33, which in turn advances the binary counter 34. Each state of the counter corresponds to the line number that enters the blocks 15, 17, 18. Since the counter is advanced by a counting trigger, the number changes every two clock pulses, which ensures the formation of a SIEAL test. During the first clock pulse, the presence of a blocking signal in the line is tested, and during the second - the state of the input line. In addition, the test signal is used in blocks 17 and 18 as a sign of the beginning or end of the lock when registering and writing to memory block 18. An additional signal analyzer 16 analyzes the information from receiver 15 and 18, and instructs the driver to stop the driver 19 and start the driver 17 when it detects the start or end of the lock. The command to register the start of blocking is formed by the AND element 35 in the absence of (signal O) information from block 18, and to the registration of the end of the blocking by element I 36 in the presence of (signal H) information from block 18. The generator 17 of the recording signals provides to block 2 through block 1 of the conditional number of the blocked TT system with an index of the beginning and end of the blocking and real-time marks The code converter, together with the telegraph package distributor, converts the binary number of the line and the test signal nor in the conventional system number TT with the index of the beginning or end of the lock in the telegraph code. The interval counter sets the periodicity for issuing current time stamps, coming, for example, from the TIME equipment, in a telegraph code with synchronization clock pulses. The prohibition element 40 permits the operation of the distributor in the periods between the issuance of time stamps (i.e., if there is no signal at the output of counter 43) and in the absence of a prohibition from block 1. The registration command from the additional signal analyzer 16 allows the distributor to work through the prohibition element 40, read the telegraph code information from the code converter, after which the end of registration (printing) signal is output to blocks 15 and 18. Information on the inputs of the code converter and the registration command are removed only after the end of printing. When the supply voltage is turned on, the input devices of the receiver 15 are reset and the information is erased (recorded) in all cells of the memory block 18. The receiver 15 of the blocking signals, connected by its signal inputs to the signal circuits for blocking the CT systems, constantly monitors the state of these circuits (lines) and records the occurrence of the blocking signal on any of the lines. The imaging unit 19 provides for cyclically alternating generation of line numbers from 1 to P simultaneously with test signals on each number. The test signal is push-pull, allowing on each line number to perform two necessary operations sequentially in time. From the output of the imaging unit 19, the specified information enters the information inputs of the receiver 15, the imaging unit 17, and the memory unit 18. In the receiver 15, for each line number, together with the test signal, the status information of this

lines. At the same time, in the first step of testing, information about the lock signal's fixing circuit is read, and in the second step, information about the line status at the moment "pe--, meni ... Both, kind of information in turn-BUT (in two cycles) is received from the output receiver 15 to the first input of the additional analyzer 1b.

In the memory block, for each line number, information is read from the corresponding memory cell / assigned to this line. The first clock of the test signal is used to record information into the memory cell, and the second is for dl. erase information. The information read in both clock cycles is fed to the second input of the analyzer 16. In the signal generator 17, information about the line number and the test signal is used only in cases of detecting detected blocks in the data lines.

Analyzer 16 on each number

The line performs a separate analysis of the information arriving at its inputs in the first and second test cycles, which determines the start and end of the block in the line.

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After the initial installation, the former 19 starts the first cycle of operation. The receiver 15 and the memory block 18, having received the first nsmer of the line, read the information into the additional analyzer 16. If no interlock signal was detected in this line at the time of reading, then in the first cycle

The tests on the second input of the additional analyzer 16 are missing information on the presence of a blockage and, regardless of the line state, the test cycle proceeds to the next (second) line number. If: however, a blocking signal was fixed (or exists) in this line, then the first input of the additional analyzer 16 receives the corresponding information, and on the second input of the additional analyzer 16 there is no information, because this cell of the memory block is in the initial state. At the same time, in the first test cycle, an additional analyzer 16 enters the command to stop the driver 19 on the first number and simultaneously to the driver 1 receives the command to register the start of blocking in this line. According to this xmand, the shaper 17 forms in the telegraphic code of the line, the index of the beginning of the blocking and you receive this information to the auxiliary input of the 1g unit where it is switched to the telegraph unit (TA to the control and measuring unit 2.,

After printing from the imaging unit 17 to the control input of the unit 18, a signal is received at the end of registration, according to which, in the first test cycle, information about the presence of blocking in this line is recorded in the first memory cell of the unit 18. This removes the command on the output of the additional signal analyzer 16 and proceeds to the second cycle of testing the same line. If the blocking signal continues to be present in the line, then the first input of the additional analyzer of signals 16 receives the corresponding information, at the second input of the analyzer there is information about the presence of blocking in this line, in this situation there is no command at the output of the additional analyzer of signals 16 and the driver 19 proceeds to issue next line number. If, at the time of the second sampling cycle, there is no blocking signal (t;, that is, the blocking has disappeared and the line has returned to its original state), then the presence of such information at the first input of the additional signal analyzer 16 together with information about the fact of blocking this line on the second input of the analyzer indicates the end of the block in this line. In this case, in the second sampling cycle, a command appears at the output of the additional signal analyzer 16, which performs the same operations as in the first sampling cycle, except that the end of blocking index is output to the print and the first memory location is erased by the previously recorded information, and the lock-fixing circuit is also returned to its initial state,

Upon receipt of the second, third, and subsequent line numbers at receiver 15 and block 18, the operation does not differ from that considered for line C 1 until the completion of testing the line with n, i.e. until the end of the first cycle of the shaper 19

In the second and subsequent cycles of operation of the former 19 on each line number in the first test cycle, the command to stop the former 19 and record the start of the blocking signal is issued only if there is information about the recorded block from receiver 15 and the absence of such information (recorded in cell in previous rounds) from block 18. If in the corresponding cell of the memory block there is information about the fact of blocking in this Line, then a transition is always made to the second sampling cycle, provided the actual beginning ki a blocking signal, i.e. in that cycle of the block of detours, when for the first time from the receiver 15 it receives information about the presence of a fixed block in this line. In the absence of information 6, the locked blocking from the receiver and the BLOCK 18 also makes the transition to the second test cycle. The Bcf test cycle on each ns line line performs the same operations as in the first cycle of operation of the former 19. The command to stop the former 19 on this number and register the end of the block is issued only if the signal is missing from the receiver 15 blocking and from block 18 of the memory of information about the fact of blocking of the issued line. , To assign the information to be printed on the TA information and real-time marks, the current driver (STB) is inserted into the generator 17. According to these signals, the imaging unit 17 periodically provides information about the current time through unit 1 to the control unit 2 of the control and measurement unit 2. At the same time, information on the presence of interlocks is printed between 10% of the time. In cases where the TA of the control and measurement unit 2 is used to monitor the TG channel, an additional output is received from the unit 1 to the generator 17 that prohibits the issuing of information about the blocks ovka at the time control channel TG. In this case, the J.7 shaper contains information about the blocking and issues it after the removal of the ban. The delay in the output of information obtained in this case does not introduce a significant error in the registration accuracy for the reasons considered in the description of the control and measuring unit 2, taking into account the fact that practically time stamps should be transmitted no more than once per minute. The technical and economic efficiency of the device consists in that by documenting the current information on the condition of the PM channels with real-time marks of the beginning and end of the faults and analyzing this information and the results jjpofie | KI of the delivered channels of the TG is provided more accurate and. prompt determination of the cause of the fault. At the same time, the number of unproductive checks is significantly reduced, the time of the channels just submitted for testing is reduced, and thus the productivity of technical staff and the quality of telegraph services are improved.

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Claims (1)

A DEVICE FOR DETECTING A DAMAGED PLOT OF A TELEGRAPHIC TRACT by ed. St. No. 944119, due to the fact that, in order to reduce the detection time by analyzing the current information about blocking of telegraph systems, a series-connected blocking signal receiver, an additional signal analyzer, a line number shaper, a registration signal shaper are introduced into it 'and the memory unit, while the signal inputs of the receiver of the blocking signals are connected to the corresponding inputs of the control and measuring unit, the additional output and the additional input of the control unit are connected respectively with the control: the input and information output of the registration signal generator, the first signal input of which is combined with the input of the line number generator, the output of which is connected to the information inputs of the memory block and the blocking signal receiver, the control input of which is connected to the input of the memory block, the output of which is connected with the second input of an additional signal analyzer; and the second signal input of the registration signal generator is an input of current time signals.