WO1994002999A1 - Vorrichtung zur überwachung einer nachrichtenübertragungseinrichtung - Google Patents
Vorrichtung zur überwachung einer nachrichtenübertragungseinrichtung Download PDFInfo
- Publication number
- WO1994002999A1 WO1994002999A1 PCT/DE1993/000577 DE9300577W WO9402999A1 WO 1994002999 A1 WO1994002999 A1 WO 1994002999A1 DE 9300577 W DE9300577 W DE 9300577W WO 9402999 A1 WO9402999 A1 WO 9402999A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- master
- bus
- transmission
- telegrams
- primary master
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/40—Monitoring; Testing of relay systems
- H04B17/401—Monitoring; Testing of relay systems with selective localization
- H04B17/406—Monitoring; Testing of relay systems with selective localization using coded addresses
Definitions
- the invention relates to a device for monitoring a message transmission device as specified in the preamble of claim 1.
- Such a monitoring device is already known from EP 0 385 126 A2.
- the known device is used for in-service monitoring and / or control of transmission devices in electrical communications technology.
- Processor units provided with addresses exchange information with one another via a telegram transmission network.
- One of several processor units is set as the master.
- the processor unit set as the master switches to the mode of a slave and reports its status.
- the in-service monitoring method works according to the calling method, which is also called polling method.
- the line sections are connected to each other via a bidirectional data bus. In normal operation, the processor units switch through all the call telegrams and response telegrams arriving at one input to several outputs.
- a processor unit that enables such a transmission of telemetry telegrams at all of its outputs is described in DE 38 06 947 AI. With the help of hybrid circuits, a transmission of Enable telemetry telegrams in several directions.
- a data transmission device is known from DE 34 36 441 A1, which has a data network with a tree structure.
- This facility provides a hierarchical system. In this way, station-wise devices could be queried and controlled from a master module via a bus. Each of the master modules would then itself be queried and controlled by a higher-level master until finally all of the information was available in a central office. In the subordinate levels of this system, only the partial information supplied to this level would be available.
- the object of the invention is a device for
- the device for monitoring a message transmission device is designed in the manner specified in the characterizing part of patent claim 1.
- the measures according to the invention result in the advantage that the monitoring device is prepared with simple implementable means to be extended to several operating points and to be able to provide all desired information in each operating point.
- the processor unit with a mirroring function can be an additional processor unit or the processor unit of a network element.
- the measures according to claim 3 have the advantage that a secondary master is present in several operating points of the message transmission device, to which the function of a primary master can optionally be transferred.
- the primary master has the active call and control function with which all devices in the communication network are controlled and monitored.
- Other masters of the same type in other operating locations listen to all data traffic in the secondary master function and are therefore able to create a similar alarm and information list.
- the measures according to claim 5 make it possible in an advantageous manner, in particular with regard to an intentional issuing of control commands, to maintain the primary master function in an operating point even in the event of takeover requests from other operating points.
- the measures according to claim 7 advantageously result in a double use of the echo function.
- FIG. 1 shows a device for monitoring a message transmission device comprising several operating points
- FIG. 2 shows a device for monitoring with the processor unit of a network element as a pseudomaster
- FIGS. 3 and 4 flow diagrams for the treatment of
- FIG. 3 Telegrams through the processor units, namely FIG. 3 for telegrams on the data bus and FIG. 4 for telegrams that arrive via the transmission channel in question.
- the message transmission device comprises the operating points 1 and 2 which are connected to one another via a message transmission network.
- the operating points 1 and 2 there are network elements which are in particular line terminals of digital optical transmission devices. With the aid of these transmission devices, useful signals are transmitted from one operating point to another.
- the transmission devices each provide an operating monitoring channel in addition to the user channels
- the network elements 131 ... 13n; 231 ... 23n are therefore connected to one another by a network of operational monitoring channels, which has the same structure as the message transmission network used to transmit the useful signals.
- the network elements 131 ... 13n; 231 ... 23n each contain a processor unit 121 ... 12n; 221 ... 22n, which serves as a monitoring device. Additional Processor units 11, 21 enable the acquisition, transmission and storage of monitoring and control information in the operational monitoring network.
- the processor unit 11 designed as a master exchanges information with the processor units 121... 12n designed as slaves via the data bus 10.
- the data bus 10 consists of the send bus 102 and the receive bus 101.
- the master 11 has its input on the transmission bus 102 and its output on the reception bus 101 and in particular has an RS485 interface.
- 121 ... 12n are each connected with their data output to the transmission bus 102 and with their data input to the reception bus 101.
- the master 11 sends request telegrams to the slaves
- the master 11 forwards telegrams received from the transmission bus 102 to the reception bus 101.
- the data buses 10 and 20 of the operating points 1 and 2 are connected to one another with the aid of the full-duplex transmission channel 611.
- the transmission channels 612 ... 61n; 622 ... 62n lead to further operating points not shown in FIG. 1.
- 131 ... 13n forward incoming telegrams via the local data bus 10 via the transmission channel 611 ... 61n connected to the respective network element 131 ... 13n.
- the network elements 131 ... 13n pass on received telegrams to the local data bus 10 via a transmission channel 611 ... 61n.
- processor unit 21 In each of the other operating points there is a processor unit with mirroring function, which is connected with its input to the send bus and with its output to the receive bus and sends telegrams received from the send bus to the receive bus. In the operating location 2, this is the processor unit 21.
- the processor units 121 ... 12n; 221 ... 22n can be used for retransmission via the associated transmission channel 611 ... 61n; 611, 622 ... 62n block received telegrams via the same transmission channel.
- Master 11 is a primary master.
- the secondary master 21 serves as a processor unit with a mirroring function. All processor units are each provided with addresses. Of the processor units formed by the master and the secondary master, one is set as the primary master and the other as the secondary master.
- a request for takeover can be found the primary master function.
- the primary master is designed in such a way that, in the next telegram, it can hand over its primary master function to the requesting secondary master and can itself transition to secondary master operation.
- the primary master can expediently be blocked from relinquishing its primary master function.
- An automatic resumption of the primary master function is advantageous in the event that the processor unit passed from the primary master operation to the secondary master operation does not receive call or response telegrams within a predetermined time.
- the processor units 121 ... 12n of the network elements 131 ... 13n of the operating point 1 are connected to one another and to the primary master via the four-wire data bus 10.
- the processor units 221 ... 22n of the network elements 231 ... 23n of the operating point 2 are connected to the secondary master 21 via the four-wire data bus 20.
- the remote network element 231 is in turn connected to the network elements 232 ... 23n of the remote operating point 2 via the data bus 20 there.
- the data buses 10, 20, ... of all operating points 1, 2, ... are logically connected to one another.
- the data buses 10 and 20 are each for duplex operation 1 a reception and a transmission bus 101, 102; 201, 202 equipped on which all processor units 121 ... 12n; 621 ... 62n are connected in the same way.
- the processor units each form a device for sequence control, which ensures an orderly distribution of the information in the network in the network elements or the master processors.
- Call telegrams arrive • l * 5 from the primary master 11 to the reception bus 101 of the operating point 1, from the receiving bus 101 to all network elements 131 ... 13n of the operating point 1, of all network elements 131 ... 13n of the operating point 1
- Data bus 20 of operating point 2 from receiving bus 201 of data bus 20 to all 30 network elements 231 ... 23n of operating point 2, from all network elements 232 ... 23n to the associated ones
- the response telegram reaches all processor units of the monitoring device.
- the addressed processor unit replies with a response telegram. It sends the response telegram to the data bus connected to it and to the transmission channel connected to it, so that the response telegram spreads in both directions in the transmission network.
- the 'reply telegram reaches primary master 11 in the following way, for example:
- Receive bus 101 from receive bus 101 to all network elements 131 ... 13n of operating point 1, from all network elements 131 ... 13n of operating point 1 to all associated transmission channels 611 ... 61n,
- network element 131 e.g. from network element 131 via transmission channel 611 to network element 231 and further as when calling to all operating points.
- FIGS. 3 and 4 Flow diagrams for the propagation of the telegrams in the transmission network are shown in FIGS. 3 and 4.
- 3 relates to telegrams that arrive at the data bus 10, 20 and FIG. 4 to telegrams that arrive at the relevant transmission channel.
- a processor unit with a mirroring function is provided in each operating point 1, 2. In operating point 1 this is the primary master 11, in operating point 2 the secondary master 21.
- the processor units with mirroring function which can possibly be a pseudo master, are each connected to the data bus of the relevant operating point like a master.
- the mirroring function enables the forwarding of the telegrams from one network element to all others without additional switching means such as forks or couplers
- the reflection function is performed by the sorappel as a secondary master designed or operated processor unit or, if a place of business having no secondary master for local monitoring of a as a pseudo master connected and operated Prozes ⁇ '.
- the secondary master 21 forwards received call telegrams to the receive bus 201 of the data bus 20.
- the processor units 121 ... 12n, 222 ... 22n have a filter function.
- the recognition of a telegram received by a processor unit 121 ... 12n, 222 ... 22n enables it to be transmitted by itself and the subsequent suppression of the transmission via its transmission channel 611 ... 61n; 622 ... 62n a unidirectional propagation of a telegram in the communication network without additional switching means such as frequency converters or filters.
- the network element 232 does not return a response telegram, which it has already received via the transmission channel 622, to the transmission channel 622 after being received by the secondary master 21.
- the primary master 11 does not send a call telegram, which it received due to the mirroring function of the secondary master 21, a second time.
- the processor units each store a predetermined number of telegrams, in particular the last three telegrams in each case.
- Telegrams are expediently overwritten cyclically by newly arriving telegrams.
- the primary master 11 is provided with an echo function. Answer telegrams received by the primary master are provided with a job identifier and transmitted.
- the filter function of the processor units is suppressed by the special job identifier for telegrams that are provided with a job identifier.
- the special job identifier means that response telegrams sent by the primary master as an echo each differ from the received response telegram.
- a job identifier provided in the telegram structure can be selected as the same number for all response telegrams and this number can be increased by 1 each time it is transmitted due to the echo function.
- the response telegram received by the primary master is modified prior to transmission based on the echo function in such a way that it is passed on by the processor units despite their filter function.
- the response telegrams sent out as an echo can possibly be modified in a different way.
- Reply telegrams in the communication network By receiving the response telegram sent by the primary master 11 as an echo by the remote secondary masters 21,... They can monitor the complete data traffic and keep their own alarm and message memory identical to that of the primary master 11.
- Each processor unit i.e. The processor units of the network elements and the masters are coded when the monitoring device is started up
- Assigned address This coding can be done by hardware or software.
- the first part of the address is identical for the processor units of an operating point and thus represents the address of the relevant operating point.
- the second part of the address is identical for the processor units of an operating point and thus represents the address of the relevant operating point.
- Address denotes the respective processor unit within an operating location.
- Each call telegram can thus be recognized by the respective processor unit as being only relevant to it.
- the special addressing of the processor units enables automatic, software-supported detection of the structure of the communication network.
- the primary master sends a call telegram provided with a special identifier to each processor unit registered in its call list, namely to the processor units of the network elements and each secondary master.
- This identifier causes such a telegram receiving processor unit to supplement this telegram with both parts of its own address and to pass it on, so that the telegram arriving at the addressed processor unit contains the addresses of all operating points and processor units passed through in a chain.
- This telegram which is now sent out as a response telegram and received by the master, enables the master to record the sequence of cascading of operating points and the assignment of the processor units to these operating points and thus the overall structure of the communication network and to display them on the data display device 13.
- All network elements provided with addresses are addressed by the primary master by calling or control telegrams.
- the respective anges r ochene network element responds in a predetermined period of time with the desired information or confirmation of the command.
- Each network element has a connection for a transmission channel, which connects this network element to a network element in a locally remote operating location.
- Each query or command telegram arriving via the data bus is passed on by the network element via the connected transmission channel.
- the telegrams arriving at a network element of another operating point via the transmission channel are forwarded by the latter to the data bus, so that all other network elements connected to it are reached via this. In this way, every telegram reaches every network element. Only the addressed network element responds with the desired information, which is distributed in the same way across the entire network.
- calls or commands to processor units can be issued from other operating locations instead of operating location 1.
- the primary master function can optionally be performed from each of the operating points 1, 2 etc. A mutual exchange of information between masters 11, 21, ... ensures that the original primary master does not send any calls as long as another master has the primary master function.
- the masters are also provided with addresses and stored in the call list. They are therefore also called cyclically.
- the secondary masters can also send a request to take over the primary master function to the primary master in the response telegram. If a primary master receives a request to transfer the primary master function, it normally transfers its primary master function to the requesting secondary master in the next telegram, if no lock has been initiated by the local operations service, and immediately goes to the secondary master Operation by now listening in and saving the cyclical call and response telegrams continued by the secondary master in the primary master function.
- the primary master takes on secondary master functions and thus remains up to date with the information.
- a return to the original function as a primary master is possible by command telegrams from the new primary master or by requesting the old primary master when his address is called up regularly by the new primary master.
- the new primary master switches back to the secondary master function after receipt of the response telegram.
- Resumption of the primary master function is planned.
- the entire message transmission network can thus be monitored and controlled from any operating point for the user or business service.
- the monitoring device is used for the central monitoring and control of a transmission network, consisting of a plurality of locally separated operating points, which are equipped with transmission devices as network elements.
- the stations of the Monitoring devices are processor units which can contain one or more processors.
- the processor units are connected to one another in a line, star or tree structure by transmission channels that are made available by the transmission devices.
- line end devices can serve as transmission devices.
- Control and monitoring is optionally possible from any operating point. All information from a transmission device and all commands from the primary master are spread throughout the network and stored by local units, the masters of the in-service monitoring device. If necessary, this information can be passed on to alarm systems and personal computers.
- FIG. 2 shows a monitoring device which largely corresponds to that of FIG. 1. Deviatingly, the secondary master 21 is missing in the operating point 2.
- the processor unit 221 of the network element 231 is connected to the data bus 20 with its input and output like a master.
- the processor unit 221 has a pseudo master mirroring function.
- a processor or a network element can also be a primary or secondary master.
- the operating points are located in different locations. If necessary, however, two or more such operating locations can be arranged at one and the same location, for example in one and the same building.
- the branches can be networked in such a way that a tree structure is created. The number of 1 Branches in a branch can be two or more. No cross connections may be made between the branches in the tree structure.
- Each slave is assigned to a transmission device and determines the quality parameters and error states of the device.
- the primary master cyclically polls all slaves for the state of the relevant transmission device. After a query by the primary master, 10 the data are sent back in a response telegram.
- a signaling device connected to the secondary master, in particular a PC, can generate alarms from the
- I 5 control functions can only be performed by a master
- the primary master function can be requested from any secondary master.
- the system can be controlled from various operator stations, especially PCs. 20th
- the echo function of the primary master ensures that the secondary masters can also receive the response telegrams addressed to the primary master. Since an answer telegram sent by the primary master as an echo also the
- a processor unit receives its own, with the job identifier or the like
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP93912641A EP0679302A1 (de) | 1992-07-27 | 1993-06-30 | Vorrichtung zur überwachung einer nachrichtenübertragungseinrichtung |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4224789 | 1992-07-27 | ||
DEP4224789.6 | 1992-07-27 |
Publications (1)
Publication Number | Publication Date |
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WO1994002999A1 true WO1994002999A1 (de) | 1994-02-03 |
Family
ID=6464220
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE1993/000577 WO1994002999A1 (de) | 1992-07-27 | 1993-06-30 | Vorrichtung zur überwachung einer nachrichtenübertragungseinrichtung |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0679302A1 (de) |
JP (1) | JP2598620B2 (de) |
CN (1) | CN1082791A (de) |
WO (1) | WO1994002999A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
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JP5216511B2 (ja) * | 2008-09-30 | 2013-06-19 | アズビル株式会社 | 流量計測システム |
CN110990312B (zh) * | 2019-11-11 | 2021-01-22 | 无锡量子感知研究所 | 一种用于随钻探测中的芯片级数据通信方法 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0385126A2 (de) * | 1989-02-28 | 1990-09-05 | Siemens Aktiengesellschaft | Einrichtung zur In-Betrieb-Überwachung und/oder Steuerung von Übertragungseinrichtungen der elektrischen Nachrichten-übertragungstechnik |
-
1993
- 1993-06-30 JP JP6504066A patent/JP2598620B2/ja not_active Expired - Lifetime
- 1993-06-30 WO PCT/DE1993/000577 patent/WO1994002999A1/de not_active Application Discontinuation
- 1993-06-30 EP EP93912641A patent/EP0679302A1/de not_active Withdrawn
- 1993-07-27 CN CN93109066A patent/CN1082791A/zh active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0385126A2 (de) * | 1989-02-28 | 1990-09-05 | Siemens Aktiengesellschaft | Einrichtung zur In-Betrieb-Überwachung und/oder Steuerung von Übertragungseinrichtungen der elektrischen Nachrichten-übertragungstechnik |
Non-Patent Citations (1)
Title |
---|
JUEHE P. Y.: "BRUECKE ZWISCHEN HESSEN UND SCHWABEN.", NACHRICHTEN ELEKTRONIK UND TELEMATIK., VERLAG DR. HUETHIG. HEIDELBERG., DE, vol. 45., no. 09., 1 September 1991 (1991-09-01), DE, pages 374 + 376., XP000262622, ISSN: 0177-5499 * |
Also Published As
Publication number | Publication date |
---|---|
CN1082791A (zh) | 1994-02-23 |
JP2598620B2 (ja) | 1997-04-09 |
EP0679302A1 (de) | 1995-11-02 |
JPH07504791A (ja) | 1995-05-25 |
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