CN104660476A - Real-time bus and realizing method thereof - Google Patents
Real-time bus and realizing method thereof Download PDFInfo
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- CN104660476A CN104660476A CN201510101947.6A CN201510101947A CN104660476A CN 104660476 A CN104660476 A CN 104660476A CN 201510101947 A CN201510101947 A CN 201510101947A CN 104660476 A CN104660476 A CN 104660476A
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- bus
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
Abstract
The invention discloses a real-time bus and a realizing method thereof. The method comprises steps as follows: each uplink bus consists of multiple first buses connected with a plurality of single plates and a public single plate; each downlink bus consists of multiple second buses with identical transmission rates and content, and the second buses are in one-to-one correspondence with the first buses and are connected with the plurality of single plates respectively and connected with the public single plate; each single plate outputs information in a corresponding time slot period and transmits the information to a data forwarding unit through the uplink buses for receiving, and other time periods are high in resistance; the data forwarding unit gathers received information, forwards the information to time slot periods corresponding to the single plates on the downlink buses and forwards downlink data of all the single plates to the downlink buses, and each single plate receives the downlink data in the corresponding time slot period. The real-time bus and the realizing method thereof have the advantages that the structure is simple, the cost is low, the real-time property is high, the number of the connected single plates is large and the like, the number of connected lines of back plates is reduced, costs of the back plates and connectors are reduced, and the equipment reliability is improved.
Description
Technical field
The present invention relates to communication technical field, be specifically related to a kind of real-time bus and its implementation.
Background technology
Some large scale electronic equipments of the communications field, usually be made up of polylith veneer, these veneers are inserted into backboard, signal interconnection is carried out by backboard line between veneer, particularly in Large Copacity optical transmission device, veneer quantity reaches more than 30 pieces usually, and the communication adopting a bus to realize between all veneers is very difficult, the information especially little for some amount of information, requirement of real-time is higher.
Existing bussing technique is a lot, as CAN (Controller Area Network, controller local area network) bus and I
2c bus etc., these technology in the field such as industrial electronic, communication equipment all extensive use, but, exist realize that agreement complexity, real-time are lower, shortcoming that the cost of backboard and connector is higher, to some occasions that interconnect information amount is little, requirement of real-time is high, be not well suited for.In communication equipment, veneer quantity is a lot, and to require between each veneer the information such as the in place and alarm of Real-time Notification, by interconnection point-to-point between veneer, wiring quantity is too many, is obviously difficult to realize, and adopts CAN and I
2the technology interconnection such as C bus, there is again agreement complexity, real-time is difficult to the problems such as guarantee, so existing bussing technique is not suitable for the communication between large quantity veneer.
In sum, there are the following problems for existing bussing technique:
(1) agreement complexity is realized;
(2) real-time is lower;
(3) cost of backboard and connector is higher.
Summary of the invention
Technical problem to be solved by this invention be solve that existing bussing technique realizes that agreement complexity, real-time are lower, problem that the cost of backboard and connector is higher, to reduce quantity and the cost of signal interconnection line between large quantity veneer in main equipment, meet the requirement of real-time of signal between veneer.
In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is to provide a kind of real-time bus, comprises row bus, lower row bus, system clock and data forwarding unit,
Described upper row bus is made up of many first buses, described in every root, the first bus connects some pieces of veneers respectively, first bus described in every root according to connected veneer quantity determination transmission rate and time-slot division, and adopts time-multiplexed mode that the data of connected each veneer are transferred to public veneer;
Described lower row bus is made up of transmission rate and identical many second buses of content, described second bus and described first bus one_to_one corresponding, and is connected with the veneer in described first bus respectively; The time slot of the second bus described in every root divides according to the quantity of all veneers;
Described system clock is used for carrying out synchronous and data sampling to bus, is made up of frame alignment clock and sampling clock, and each veneer adopts sampling clock to carry out data input and data output sampling, and the time slot section of different veneer adopts frame alignment clock location;
Described data forwarding unit is positioned on described public veneer, receives the information that veneer on described upper row bus sends, and the information received is summarised in and is forwarded to together in time slot section that on described lower row bus, each veneer is corresponding.
In above-mentioned real-time bus, the first bus described in every root is connected with m block veneer, the speed of described first bus is 1/n sample clock frequency, and n is equipment veneer sum/m; The speed of described second bus equals sample clock frequency.
In above-mentioned real-time bus, the veneer quantity that the first bus described in every root connects is different, and the speed of described first bus is 1/n sample clock frequency, and n is the veneer quantity that equipment veneer sum/described first bus connects; The speed of described second bus equals sample clock frequency.
In above-mentioned real-time bus, each veneer exports the information of this veneer in each self-corresponding time slot section, and receives to the data forwarding unit on described public veneer through each up bus transfer, all the other period high resistants; The downlink data of all veneers is forwarded to described lower row bus by described data forwarding unit in the lump, and each veneer receives corresponding downlink data in the time slot section that lower row bus is corresponding.
Present invention also offers a kind of implementation method of real-time bus, described implementation method comprises the following steps:
Step 201, described upper row bus are made up of many first buses, described first bus is connected some veneers respectively and is connected with public veneer;
Step 202, described lower row bus are made up of transmission rate and identical many second buses of content, and described second bus and described first bus one_to_one corresponding, connect some veneers respectively by described second bus and connect in public veneer;
Step 203, each veneer export the information of this veneer in each self-corresponding time slot section, and receive to the data forwarding unit on described public veneer through each described up bus transfer, all the other period high resistants;
The information received is summarised in and is forwarded in time slot section that on described lower row bus, each veneer is corresponding together by step 204, described data forwarding unit, and the downlink data of all veneers is forwarded to described lower row bus in the lump, each veneer receives corresponding downlink data in the time slot section that lower row bus is corresponding.
In above-mentioned implementation method, described real-time bus carries out synchronous and data sampling by system clock to bus, and each veneer adopts sampling clock to carry out data input and data output sampling, and the time slot section of different veneer adopts frame alignment clock location.
In above-mentioned implementation method, described data forwarding unit is positioned on described public veneer, receives the information that veneer on described upper row bus sends, and the information received is summarised in and is forwarded to together in time slot section that on described lower row bus, each veneer is corresponding.
In above-mentioned implementation method, the veneer quantity that the first bus described in every root connects is different, and the speed of described first bus is 1/n sample clock frequency, and n is the veneer quantity that equipment veneer sum/described first bus connects; The speed of described second bus equals sample clock frequency.
In above-mentioned implementation method, the first bus described in every root according to connected veneer quantity determination transmission rate and time-slot division, and adopts time-multiplexed mode that the data of connected each veneer are transferred to public veneer; The time slot of the second bus described in every root divides according to the quantity of all veneers.
The present invention, described bus is applied on complicated electronic equipment, particularly on jumbo communication equipment, the intercommunication of information between all veneers can be realized, have structure simple, realize the advantages such as agreement is simple, cost is low, real-time, connecting single board quantity is many, enormously simplify the line quantity of backplane interconnect, reduce backboard and connector cost, improve the reliability of equipment.
Accompanying drawing explanation
The real-time bus structure chart that Fig. 1 provides for the embodiment of the present invention;
The implementation method flow chart of a kind of real-time bus that Fig. 2 provides for the embodiment of the present invention.
Embodiment
Below in conjunction with specification drawings and specific embodiments, the present invention is described in detail.
Embodiments provide a kind of real-time bus, as shown in Figure 1, comprise row bus, lower row bus, system clock and data forwarding unit,
Described upper row bus is made up of many first buses, described in every root, the first bus connects some pieces of veneers respectively, first bus described in every root according to connected veneer quantity determination transmission rate and time-slot division, and adopts time-multiplexed mode that the data of connected each veneer are transferred to public veneer.
Described lower row bus is made up of transmission rate and identical many second buses of content, described second bus and described first bus one_to_one corresponding, and is connected with the veneer in described first bus respectively; The time slot of the second bus described in every root divides according to the quantity of all veneers.
First bus described in every root is connected with m block veneer, the speed of described first bus is 1/n sample clock frequency, and n is equipment veneer sum/m; The speed of described second bus equals sample clock frequency.
The veneer quantity that first bus described in every root connects is different, and the speed of described first bus is 1/n sample clock frequency, and n is the veneer quantity that equipment veneer sum/described first bus connects; The speed of described second bus equals sample clock frequency.
Described system clock is used for carrying out synchronous and data sampling to bus, is made up of frame alignment clock and sampling clock, and each veneer adopts sampling clock to carry out data input and data output sampling, and the time slot section of different veneer adopts frame alignment clock location.
Described data forwarding unit is positioned on described public veneer, receives the information that veneer on described upper row bus sends, and the information received is summarised in and is forwarded to together in time slot section that on described lower row bus, each veneer is corresponding.
Each veneer exports the information of this veneer in each self-corresponding time slot section, and receives to the data forwarding unit on described public veneer through each up bus transfer, all the other period high resistants; The downlink data of all veneers is forwarded to described lower row bus by described data forwarding unit in the lump, and each veneer receives corresponding downlink data in the time slot section that lower row bus is corresponding.
Illustrate with optical transmission device below, optical transmission device is generally made up of control board, cross board and service processing board, and control board must join veneer in equipment, and be responsible for management and the control of whole equipment, all the other veneers can configure according to business demand.Suppose in equipment, have 40 pieces of business, intersection veneer and 2 pieces of control boards, adopt the real-time bus of this programme, can according to veneer arrangement and the driving force of veneer bus interface, divide 4 buses, i.e. 4 upper row bus and 4 lower row bus, now n=4, every root bus hangs 10 pieces of veneers, bus structures as shown in Figure 1, if equipment sample clock frequency is 19.44MHz, then every up Bus Speed of root is 1/4 sample clock frequency, i.e. 4.86Mb/s, descending Bus Speed equals sample clock frequency, i.e. 19.44Mb/s.On every root, row bus connects 10 pieces of veneers, is namely divided into 10 time slot sections, and the veneer that lower row bus connects adds up to 40, is namely divided into 40 time slot sections (not comprising 2 pieces of control boards), or 42 time slot sections (comprising 2 pieces of control boards).Optical transmission device generally has system clock 19.44MHz and frame alignment clock 19.44MHz, can be used as synchronised clock and the frame alignment clock of this real-time bus, and frame alignment clock is used for locator data time slot section.
The present invention, described bus is applied on complicated electronic equipment, particularly on jumbo communication equipment, the intercommunication of information between all veneers can be realized, have structure simple, realize the advantages such as agreement is simple, cost is low, real-time, connecting single board quantity is many, enormously simplify the line quantity of backplane interconnect, reduce backboard and connector cost, improve the reliability of equipment.
The embodiment of the present invention additionally provides a kind of implementation method of real-time bus, and as shown in Figure 2, described implementation method comprises the following steps:
Step 201, described upper row bus are made up of many first buses, described first bus is connected some veneers respectively and is connected with public veneer.
Step 202, described lower row bus are made up of transmission rate and identical many second buses of content, and described second bus and described first bus one_to_one corresponding, connect some veneers respectively by described second bus and be connected with public veneer.
Step 203, each veneer export the information of this veneer in each self-corresponding time slot section, and receive to the data forwarding unit on described public veneer through each described up bus transfer, all the other period high resistants.
The information received is summarised in and is forwarded in time slot section that on described lower row bus, each veneer is corresponding together by step 204, described data forwarding unit, and the downlink data of all veneers is forwarded to described lower row bus in the lump, each veneer receives corresponding downlink data in the time slot section that lower row bus is corresponding.
The present invention is not limited to above-mentioned preferred forms, and anyone should learn the structural change made under enlightenment of the present invention, and every have identical or close technical scheme with the present invention, all falls within protection scope of the present invention.
Claims (9)
1. a real-time bus, comprises row bus, lower row bus, system clock and data forwarding unit, it is characterized in that,
Described upper row bus is made up of many first buses, described in every root, the first bus connects some pieces of veneers respectively, first bus described in every root according to connected veneer quantity determination transmission rate and time-slot division, and adopts time-multiplexed mode that the data of connected each veneer are transferred to public veneer;
Described lower row bus is made up of transmission rate and identical many second buses of content, described second bus and described first bus one_to_one corresponding, and is connected with the veneer in described first bus respectively; The time slot of the second bus described in every root divides according to the quantity of all veneers;
Described system clock is used for carrying out synchronous and data sampling to bus, is made up of frame alignment clock and sampling clock, and each veneer adopts sampling clock to carry out data input and data output sampling, and the time slot section of different veneer adopts frame alignment clock location;
Described data forwarding unit is positioned on described public veneer, receives the information that veneer on described upper row bus sends, and the information received is summarised in and is forwarded to together in time slot section that on described lower row bus, each veneer is corresponding.
2. real-time bus as claimed in claim 1, it is characterized in that, the first bus described in every root is connected with m block veneer, the speed of described first bus is 1/n sample clock frequency, and n is equipment veneer sum/m; The speed of described second bus equals sample clock frequency.
3. real-time bus as claimed in claim 1, is characterized in that, the veneer quantity that the first bus described in every root connects is different, and the speed of described first bus is 1/n sample clock frequency, and n is the veneer quantity that equipment veneer sum/described first bus connects; The speed of described second bus equals sample clock frequency.
4. real-time bus as claimed in claim 1, is characterized in that,
Each veneer exports the information of this veneer in each self-corresponding time slot section, and receives to the data forwarding unit on described public veneer through each up bus transfer, all the other period high resistants; The downlink data of all veneers is forwarded to described lower row bus by described data forwarding unit in the lump, and each veneer receives corresponding downlink data in the time slot section that lower row bus is corresponding.
5. an implementation method for real-time bus, is characterized in that, described implementation method comprises the following steps:
Step 201, described upper row bus are made up of many first buses, described first bus is connected some veneers respectively and is connected with public veneer;
Step 202, described lower row bus are made up of transmission rate and identical many second buses of content, and described second bus and described first bus one_to_one corresponding, connect some veneers respectively by described second bus and be connected with public veneer;
Step 203, each veneer export the information of this veneer in each self-corresponding time slot section, and receive to the data forwarding unit on described public veneer through each described up bus transfer, all the other period high resistants;
The information received is summarised in and is forwarded in time slot section that on described lower row bus, each veneer is corresponding together by step 204, described data forwarding unit, and the downlink data of all veneers is forwarded to described lower row bus in the lump, each veneer receives corresponding downlink data in the time slot section that lower row bus is corresponding.
6. implementation method as claimed in claim 5, it is characterized in that, described real-time bus carries out synchronous and data sampling by system clock to bus, and each veneer adopts sampling clock to carry out data input and data output sampling, and the time slot section of different veneer adopts frame alignment clock location.
7. implementation method as claimed in claim 5, it is characterized in that, described data forwarding unit is positioned on described public veneer, receives the information that veneer on described upper row bus sends, and the information received is summarised in and is forwarded to together in time slot section that on described lower row bus, each veneer is corresponding.
8. implementation method as claimed in claim 5, is characterized in that, the veneer quantity that the first bus described in every root connects is different, and the speed of described first bus is 1/n sample clock frequency, and n is the veneer quantity that equipment veneer sum/described first bus connects; The speed of described second bus equals sample clock frequency.
9. implementation method as claimed in claim 5, it is characterized in that, first bus described in every root according to connected veneer quantity determination transmission rate and time-slot division, and adopts time-multiplexed mode that the data of connected each veneer are transferred to public veneer; The time slot of the second bus described in every root divides according to the quantity of all veneers.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510101947.6A CN104660476A (en) | 2015-03-09 | 2015-03-09 | Real-time bus and realizing method thereof |
| PCT/CN2015/093681 WO2016141724A1 (en) | 2015-03-09 | 2015-11-03 | Real-time bus and implementation method therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510101947.6A CN104660476A (en) | 2015-03-09 | 2015-03-09 | Real-time bus and realizing method thereof |
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| CN104660476A true CN104660476A (en) | 2015-05-27 |
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| CN201510101947.6A Pending CN104660476A (en) | 2015-03-09 | 2015-03-09 | Real-time bus and realizing method thereof |
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| WO (1) | WO2016141724A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016141724A1 (en) * | 2015-03-09 | 2016-09-15 | 烽火通信科技股份有限公司 | Real-time bus and implementation method therefor |
| CN109284242A (en) * | 2018-08-10 | 2019-01-29 | 烽火通信科技股份有限公司 | Multi-groove interactively communicates method and device on backboard |
| CN110048825A (en) * | 2019-04-03 | 2019-07-23 | 郑州轨道交通信息技术研究院 | A kind of method and its communication means of bus-sharing |
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| US20030023800A1 (en) * | 2001-07-30 | 2003-01-30 | Knaack William Christopher | Electronic data acquisition system having multi-level backplane architecture for interfacing a common host computer to non-specific target hardware through multiple PCI bridges |
| CN101394329A (en) * | 2008-10-09 | 2009-03-25 | 华为技术有限公司 | Parallel system bus construction and port configuration management method thereof |
| CN102790652A (en) * | 2011-05-17 | 2012-11-21 | 中兴通讯股份有限公司 | Data communication system and method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104660476A (en) * | 2015-03-09 | 2015-05-27 | 烽火通信科技股份有限公司 | Real-time bus and realizing method thereof |
-
2015
- 2015-03-09 CN CN201510101947.6A patent/CN104660476A/en active Pending
- 2015-11-03 WO PCT/CN2015/093681 patent/WO2016141724A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030023800A1 (en) * | 2001-07-30 | 2003-01-30 | Knaack William Christopher | Electronic data acquisition system having multi-level backplane architecture for interfacing a common host computer to non-specific target hardware through multiple PCI bridges |
| CN101394329A (en) * | 2008-10-09 | 2009-03-25 | 华为技术有限公司 | Parallel system bus construction and port configuration management method thereof |
| CN102790652A (en) * | 2011-05-17 | 2012-11-21 | 中兴通讯股份有限公司 | Data communication system and method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016141724A1 (en) * | 2015-03-09 | 2016-09-15 | 烽火通信科技股份有限公司 | Real-time bus and implementation method therefor |
| CN109284242A (en) * | 2018-08-10 | 2019-01-29 | 烽火通信科技股份有限公司 | Multi-groove interactively communicates method and device on backboard |
| CN110048825A (en) * | 2019-04-03 | 2019-07-23 | 郑州轨道交通信息技术研究院 | A kind of method and its communication means of bus-sharing |
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| Publication number | Publication date |
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| WO2016141724A1 (en) | 2016-09-15 |
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Application publication date: 20150527 |