CN1199262A - Transmission line protection system - Google Patents
Transmission line protection system Download PDFInfo
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- CN1199262A CN1199262A CN98108784A CN98108784A CN1199262A CN 1199262 A CN1199262 A CN 1199262A CN 98108784 A CN98108784 A CN 98108784A CN 98108784 A CN98108784 A CN 98108784A CN 1199262 A CN1199262 A CN 1199262A
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- transmission line
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Abstract
The invention provides a transmission line protection system, which has a plurality of transmission lines which are relative to transmission lines in a current system and transmission lines in a back-up system, and can respond the detection results of line fault to conduct the switching between the transmission lines in the current system and the transmission lines in the back-up system, and can conduct the switching from the transmission lines in the current system to the transmission lines in the back-up system for the transmission line with fault relative to the fault detection result of a plurality of transmission lines, thereby only realizing protective switching of the transmission lines for the transmission line with fault, which does not affect the transmission lines without fault, thereby the service of the transmission lines can not be interrupted.
Description
The present invention relates to a kind of transmission line protection system, particularly the dual element of current use system (Working) with some transmission lines and back-up system (Protection) is carried out the technology that transmission line switches.
Original transmission line protection system as shown in Figure 4.As shown in Figure 4, include receiver side terminal 8, switch change detection portion 10 and main signal output control part 9 in the formation of current use system assembly 1.Receiver side terminal 8 be used in ATM (Asynchronous Transfer Mode) unit to input, be included in several STM (Synchronous Transfer Mode) signal 2 in the pay(useful) load and carry out synchronous or the like the various processing of zone built on stilts (セ Network シ ヨ Application オ-バ ヘ Star De), indication (Port イ Application ), path built on stilts (パ ス オ-バ ヘ Star De) and atm cell, and export several pay(useful) load signals 3 and fault detection signal 4.Switch change detection portion 10 is used for input fault detection signal 4, and exports a switch switching signal 5.Main signal output control part 9 is imported several pay(useful) load signals 3 by receiver side terminal 8, and according to by the ON/OFF LINE signal 7 that is arranged on main signals output control signal generating units 33 inputs in the external module 31, exports pay(useful) load signal 6.
The structure of back-up system assembly 21 includes receiver side terminal 28, switch change detection portion 20 and main signal output control part 29 in constituting.Receiver side terminal 28 be used for atm cell to input, be included in that several STM signals 2 in the pay(useful) load carry out that the zone is built on stilts, indication, path is built on stilts and atm cell is synchronous or the like various processing, and export several pay(useful) load signals 23 and fault detection signal 24.Switch change detection portion 20 is used for input fault detection signal 24, and exports a switch switching signal 25.Main signal output control part 29 is imported several pay(useful) load signals 23 by receiver side terminal 28, and according to by the ON/OFF LINE signal 27 that is arranged on main signals output control signal generating units 33 inputs in the external module 31, exports pay(useful) load signal 6.
Include main signal output control signal generating unit 33 during externally the structure of assembly 31 constitutes, the latter is used for by current use system assembly 1 input switch switching signal 5, by back-up system assembly 21 input switch switching signals 25, by outside input switch switching signal 32, and be used for each bar transmission line output ON/OFF LINE signal 7, to each bar transmission line output ON/OFF LINE signal 27 of back-up system assembly 121 to current use system assembly 1.
In this structure constitutes, can monitor with 8,28 pairs of each the bar transmission lines of terminal part in each assembly 1,21 of current use system and back-up system.When detecting fault (transmission lines fault, receiver side plant failure or the like), switch change detection portion 10,20 will produce switch switching signal 5,25 to whole transmission lines according to this fault detection signal 4,24.External module 31 generates ON/OFF LINE signal 7,27 according to this switch switching signal 5,25, and controls the output of the receiver side main signal of two systems.
Show the internal structure formation of main signal output control signal generating unit 33 here with Fig. 5.In Fig. 5 with Fig. 4 in identical part represent with identical label.In main signal output control signal generating unit 33, be provided with output control part 33-1.This output control part 33-1 receives the switch switching signal 5 of current use system, the switch switching signal 25 of back-up system, and by the switch switching signal 32 of outside input, and output and the corresponding ON/OFF LINE of these switching signal current potentials signal 7,27.When input has signal 7,27, main signal output control part 9,29 will now be used and standby switching the carrying out of whole transmission line integral body.
Above-mentioned original transmission line protection system has transmission line to produce in the current use system assembly to have loop character to worsen or when claiming bad or the like fault; and it will be switched to back-up system the time, be whole transmission lines to be implemented whole protectiveness switch.Therefore have and also will carry out protectiveness to other irrelevant transmission line and switch, thereby can interrupt not producing the shortcoming of the business service of out of order those transmission lines.
In Japanese kokai publication hei 2-2261 communique, Japanese kokai publication hei 3-265317 communique and Japanese kokai publication hei 4-183029 communique, also disclose some and switched the transmission line in current use systems and the technology of the transmission line in the back-up system, yet disclosed technology does not all solve the shortcoming that exists in the above-mentioned technology formerly in these communiques.
The purpose of this invention is to provide a kind ofly in the time will producing out of order transmission line and switch to back-up system, can prevent from not produce the transmission line protection system that the business service of out of order those transmission lines is interrupted by current use system.
The transmission line protection system that constitutes according to the present invention; can be a kind of current use system and back-up system that constitutes by some transmission lines respectively that have; and can respond the transmission line protection system that the fault detect result of these circuits is carried out the switching between current use system and back-up system; it is characterized in that it also has the switching controls assembly; thereby can carry out by the switching of current use system producing out of order transmission line with respect to the fault detect result of aforementioned some transmission lines to back-up system.
It is worthy of note, the monitoring current use system that this transmission line protection system can be often and each the bar transmission line in the back-up system, and can detect whether produced transmission lines fault, receiver side plant failure or the like fault.Produce when line fault is arranged when detecting in each bar transmission line, can generate the assigned switch switching signal that assigned switch switches usefulness.The thresholding (condition) that all right configuration switch switches.Here, control the ON/OFF LINE signal that the receiver side main signal is exported usefulness, generate by external module according to the switch switching signal of two systems.This ON/OFF LINE signal can by outside input be that the pressure switching signal of unit produces with the circuit, also the startup benchmark that can use according to line protection (drive access (transmission line) produce have fault and receiver side device to produce fault is arranged) produces.Adopt this constituted mode, just can implement protectiveness and switch the transmission line that reaches the startup benchmark that line protection uses.
Fig. 1 is for representing the schematic block diagram of the structure formation of the transmission line protection system of formation according to one embodiment of present invention.
Fig. 2 is the schematic block diagram of the transmission line protection system structure formation as shown in Figure 1 of expression more specifically.
Fig. 3 is the schematic block diagram of the internal structure formation of expression main signal output control circuit as shown in Figure 2.
Fig. 4 is the schematic block diagram of the structure formation of the original transmission line protection system of expression.
Fig. 5 is the schematic block diagram of the internal structure formation of expression main signal output control circuit as shown in Figure 4.
Below with reference to the detailed explanation the present invention of accompanying drawing.
Fig. 1 is for representing the block diagram of the structure formation of the transmission line protection system of formation according to one embodiment of present invention.Just as shown in the figure, include receiver side main signal end-loopback 111 and line fault in the formation of current use system assembly 101 and detect loop 112.Receiver side main signal end-loopback 111 be used for atm cell to input, be included in that several STM signals 102 in the pay(useful) load carry out that the zone is built on stilts, indication, path are built on stilts, atm cell is synchronous or the like various processing, and according to several main signals output control signals 107 several pay(useful) load signals 106 of output and fault detection signals 104.Line fault detects loop 112 and is used for input fault detection signal 104, and output switch switching signal 105.
Include receiver side main signal end-loopback 113 and line fault in the formation of back-up system assembly 121 and detect loop 114.Receiver side main signal end-loopback 113 be used for atm cell to input, be included in that several STM signals 122 in the pay(useful) load carry out that the zone is built on stilts, indication, path are built on stilts, atm cell is synchronous or the like various processing, and according to several main signals output control signals 127 several pay(useful) load signals 106 of output and fault detection signals 124.Line fault detects loop 112 and is used for input fault detection signal 124, and output switch switching signal 125.
The structure of external module 131 includes receiver side main signal output control circuit 133 in constituting, the latter is used for by current use system assembly 101 several switch switching signals 105 of input, by back-up system assembly 121 several switch switching signals 125 of input, is several switch switching signals 132 of unit by the outside input with the transmission line, and be used for each bar circuit output main signal output control signal 107, to each bar circuit output main signal output control signal 127 of back-up system assembly 121 to current use system assembly 101.
In this structure constituted, can detect 112,114 pairs of each the bar transmission lines in loop with line fault had trouble-free monitoring.When detecting fault, output switch switching signal 105,125 will produce out of order circuit with indication and switch to back-up system by current use system.This switch switching signal 105,125 inputs in the receiver side main signal output control circuit 133 in the external module 131, and only switches the signal 107,127 that produces out of order transmission line by latter's output.
Fig. 2 is the schematic block diagram of the formation of structure more specifically of expression transmission line protection system as shown in Figure 1.As shown in Figure 2, in constituting, the structure of the receiver side main signal end-loopback 111 of current use system assembly 101 includes receiver side terminal 108 and main signal output control part 109.Receiver side terminal 108 be used for atm cell to input, be included in that several STM signals 102 in the pay(useful) load carry out that the zone is built on stilts, indication, path are built on stilts, atm cell is synchronous or the like various processing, and export several pay(useful) load signals 103 and fault detection signal 104.Main signal output control part 109 is used for by receiver side terminal 108 several pay(useful) load signals 103 of input, and according to by be arranged on main signals output control signal generating unit in the external module 131 133 that provide, be the ON/OFF LINE signal 107 of unit with the circuit, the pay(useful) load signal 106 of output respective lines.
During constituting, the structure in line fault detection loop 112 includes a switch change detection portion 10, the latter is used for by receiver side terminal 108 input fault detection signals 104, and the output of the main signal in external module 131 control signal generating unit 133 output switch switching signals 105.
In constituting, the structure of the receiver side main signal end-loopback 113 of back-up system assembly 121 includes receiver side terminal 128 and main signal output control part 129.Receiver side terminal 128 be used for atm cell to input, be included in that several STM signals 122 in the pay(useful) load carry out that the zone is built on stilts, indication, path are built on stilts, atm cell is synchronous or the like various processing, and export several pay(useful) load signals 123 and fault detection signal 124.Main signal output control part 129 is used for by receiver side terminal 128 several pay(useful) load signals 123 of input, and according to 133 that provide by the output of the main signals in the external module 131 control signal generating unit, be the ON/OFF LINE signal 127 of unit with the circuit, the pay(useful) load signal 106 of output respective lines.Main signal output control part 109,129 is exported the main signal of complementary usefulness to each transmission line according to ON/OFF LINE signal 107,127.
During constituting, the structure in line fault detection loop 114 includes a switch change detection portion 126, the latter is used for by receiver side terminal 128 input fault detection signals 124, and the output of the main signal in being configured in external module 131 control signal generating unit 133 output switch switching signals 125.
During constituting, the structure of the main signal output control circuit 133 in the external module 131 includes main signal output control signal generating unit 134, the latter is used for switch change detection loop 110 several switch switching signals 105 of input by current use system assembly 111, switch change detection loop 126 several switch switching signals 125 of input by back-up system assembly 121, is several switch switching signals 132 of unit by the outside input with the circuit, and be used for each bar transmission line output ON/OFF LINE signal 107, to each the bar circuit output ON/OFF LINE signal 127 in the back-up system assembly 121 to current use system assembly 101.
Here, the internal structure of main signal output control circuit constitutes as shown in Figure 3.In main signal output control signal generating unit 134, be provided with and the corresponding output control part 134-1～134-N of each bar transmission line.In other words be exactly, the number of the circuit here is N, so be provided with and the corresponding output control part 134-1～134-N of each bar transmission line.
The switch switching signal 105 of the fault detect of first circuit in the output current use system assembly 101 being replied usefulness inputs to output control part 134-1.But also the fault detect that will export first circuit in the back-up system assembly 121 is replied the switch switching signal 125 of usefulness and is inputed to output control part 134-1.Also switch switching signal 132 is arranged at output control part 134-1 place by the outside input.
Similarly, the switch switching signal 105 of the fault detect of the N circuit of output current use system assembly 101 being replied usefulness inputs to output control part 134-N.The switch switching signal 125 of the fault detect of the N circuit in the output back-up system assembly 121 being replied usefulness inputs to output control part 134-N.And also switch switching signal 132 is arranged by outside input at output control part 134-N place.
These output control parts 134-1～134-N responds corresponding line fault testing result, and the ON/OFF LINE signal 107,127 that produces out of order used for transmission line is only switched in output.Promptly in original system,, just whole circuits to be switched to back-up system by current use system, and in native system, can only this transmission line be switched to back-up system by current use system in case a generation in some circuits has fault.By adopting this structure constituted mode, can the transmission line that not produce fault not produced any influence, and then can not interrupt the business service of these transmission lines.
The more important thing is; native system is for to be provided with current use system and back-up system for some transmission lines; and the transmission line protection system that switches between current use system and back-up system is carried out in the fault detect that can respond these transmission lines; so it can respond and some the corresponding line fault testing results of transmission line, carries out the switching between current use system and back-up system.
Can adopt well-known various detection method to carry out the detection of line fault.If for instance, can be specific value by corresponding transmission information source established data logical value, or during characteristic value (be entirely " 1 " or complete be " 0 "), judge that fault has taken place this transmission line.Also can be when being well-known error detection symbol by corresponding transmission information source established data value, when being the rub-out signal that CyclicRedundancy Check (CRC) and parity check use, judge that it has produced fault.
And,, also can needed transmission line be switched to back-up system by current use system by outside input switch switching signal in order to maintain the operation of detection or the like for out of order occasion does not take place.
In the above-described embodiment, to detect loop 112,114 output fault detection signals 104,124 by receiver side main signal end-loopback 111,113 to line fault is that example describes, but also can detect the Monitoring Data of loop 112,114 each transmission line of output to line fault, to detect the transmission line that fault has taken place.
In contrast, also line fault can be detected in the loop 112,114 and be contained in the receiver side main signal end-loopback 111,113, and directly export switch switching signal 105,125 to main signal output control circuit 133 by receiver side main signal end-loopback 111,113.When utilizing 111,113 pairs of corresponding transmission lines of receiver side main signal end-loopback to carry out the occasion of fault detect and switch switching output, can also dispense line fault and detect loop 112,114.
Aforesaid the present invention can be that unit carries out the switching between fault detect and current use system and back-up system with the circuit; so dual element for current use system with some transmission lines and back-up system; can be by only carrying out the mode that protectiveness is switched to producing out of order transmission line; the transmission line that does not produce fault is not produced any influence, thus can be with the unbroken business service of carrying out of these transmission lines.
Claims (6)
1. transmission line protection system; have with current use system in transmission line (102) and corresponding some the transmission lines of transmission line (122) in the back-up system; and testing result that can the response line fault is carried out transmission line in the current use system and the switching between the transmission line in the back-up system
It is characterized in that also having the switching controls assembly (111～114,133), with fault detect result, carry out switching by the transmission line of the transmission line in the current use system to the back-up system to producing out of order transmission line with respect to aforesaid some transmission lines.
2. transmission line protection system as claimed in claim 1 is characterized in that aforesaid switching controls assembly includes:
To the circuit in the aforementioned current use system one by one carry out fault detect, and output switches the first fault detect assembly (111,112) that the signal that produces out of order transmission line is used,
To the circuit in the aforementioned back-up system one by one carry out fault detect, and output switches the second fault detect assembly (113,114) that the signal that produces out of order transmission line is used,
With switch control assembly (133) aforesaid some the corresponding settings of transmission line, that according to the switching signal of the aforementioned first and second fault detect assemblies output transmission line in the aforementioned current use system and the transmission line in the back-up system are carried out on/off control.
3. transmission line protection system as claimed in claim 2; it is no abnormal to it is characterized in that the aforementioned first and second fault detect assemblies have according to the signal on the corresponding transmission line, whether produces the drive access fault that comprises in the corresponding transmission line and the fault of receiving system fault and detect.
4. transmission line protection system as claimed in claim 3, when it is characterized in that data value in the signal of the aforementioned first and second fault detect assemblies on being included in corresponding transmission line is specific value, judging to produce in the corresponding transmission line has fault.
5. transmission line protection system as claimed in claim 3; it is characterized in that the aforementioned first and second fault detect assemblies are according to the data error detection symbol; when the data in the signal on being included in corresponding transmission line were misdata, judging to produce in the corresponding transmission line had fault.
6. transmission line protection system as claimed in claim 2 is characterized in that also having:
First signal output control assembly (109), it controls correspondingly with the on/off of aforementioned switches control assembly, and in some the transmission lines each is exported signal on the aforementioned current use system transmission line,
Secondary signal output control assembly (129), it is corresponding with the on/off control of aforementioned switches control assembly, and complementary mutually with the action of aforesaid first signal output control assembly, in some the transmission lines each is exported signal on the aforementioned back-up system transmission line.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP65235/97 | 1997-03-19 | ||
| JP9065235A JPH10262098A (en) | 1997-03-19 | 1997-03-19 | Line protection system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1199262A true CN1199262A (en) | 1998-11-18 |
| CN1078967C CN1078967C (en) | 2002-02-06 |
Family
ID=13281061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98108784A Expired - Fee Related CN1078967C (en) | 1997-03-19 | 1998-03-19 | Transmission line protection system |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPH10262098A (en) |
| CN (1) | CN1078967C (en) |
| HK (1) | HK1016355A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100468907C (en) * | 2001-12-31 | 2009-03-11 | Abb技术股份公司 | High speed transfer system |
| CN103248003A (en) * | 2012-02-02 | 2013-08-14 | 中国电信股份有限公司 | Power input protection device and power input protection method for outdoor comprehensive cabinet |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7394889B2 (en) * | 2020-01-27 | 2023-12-08 | 三菱電機株式会社 | Transmitting device, receiving device and communication method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2222979Y (en) * | 1995-03-22 | 1996-03-20 | 高子臣 | Automatic controller for disconnecting from normal source and connecting to stand-by source |
-
1997
- 1997-03-19 JP JP9065235A patent/JPH10262098A/en active Pending
-
1998
- 1998-03-19 CN CN98108784A patent/CN1078967C/en not_active Expired - Fee Related
-
1999
- 1999-03-22 HK HK99101149A patent/HK1016355A1/en not_active IP Right Cessation
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100468907C (en) * | 2001-12-31 | 2009-03-11 | Abb技术股份公司 | High speed transfer system |
| CN103248003A (en) * | 2012-02-02 | 2013-08-14 | 中国电信股份有限公司 | Power input protection device and power input protection method for outdoor comprehensive cabinet |
| CN103248003B (en) * | 2012-02-02 | 2016-03-30 | 中国电信股份有限公司 | The power supply input protector of outdoor integrated cabinet and method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH10262098A (en) | 1998-09-29 |
| CN1078967C (en) | 2002-02-06 |
| HK1016355A1 (en) | 1999-10-29 |
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