CN102821016A - Communication framework of metro platform-edge door control system - Google Patents
Communication framework of metro platform-edge door control system Download PDFInfo
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- CN102821016A CN102821016A CN2012103117287A CN201210311728A CN102821016A CN 102821016 A CN102821016 A CN 102821016A CN 2012103117287 A CN2012103117287 A CN 2012103117287A CN 201210311728 A CN201210311728 A CN 201210311728A CN 102821016 A CN102821016 A CN 102821016A
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Abstract
A communication framework of a metro platform-edge door control system comprises a PSA (remote warning panel), the Ethernet, a PEDC (platform-edge door controller), Ethernet conversion CAN (controller area network) modules and DCUs (door control units). The PSA is connected with the PEDC through the Ethernet and is connected with each DCU through the Ethernet conversion CAN modules. Each of the DCUs and the Ethernet conversion CAN module is provided with two CAN ports, and the DCUs are divided into two groups. The DUCs of each group are respectively connected on the two Ethernet conversion CAN modules in a hung manner to form network structures which are connected crossly in a hung manner, and the PSA is in charge of comprehensive dispatching and communication of each DCU. Automatic detection of communication signal channels, communication links hot backup, link breakage intelligent restoring and intelligent distribution of the communication signal channels of the metro platform-edge door control system can be realized, and the communication framework can operate in the severe environment, communication reliability is guaranteed, communication bandwidth is broadened, and unnecessary manual intervention is avoided.
Description
Technical field
The present invention relates to a kind of mechanics of communication of subway shield door control system, be specifically related to a kind of communication architecture of subway shield door control system.
Background technology
At present; Need be under the support of certain communication framework in the subway shield door control system; Let long-distance alarm dish PSA (Remote Warning Panel) can monitor the running status of each door control unit DCU (Door Control Unit) and cell controller PEDC (Platform Edge Door Controller), also will carry out operations such as parameter configuration, firmware update to some equipment sometimes through PSA.The communication architecture of general subway shield door system is only supported the single channel transmission, and data can't be transmitted when channel damages; Perhaps only support cold standby, when DCU one path channels damages, can only manual intervention just can switch to another road operate as normal; And after the DCU communication link failure recovers, need artificial the intervention could recover communication.
Summary of the invention
The problem that the present invention will solve is to solve the above-mentioned deficiency of prior art and communication architecture that a kind of subway shield door control system is provided; Make its reliability that not only can guarantee communication, increase bandwidth; And can smart allocation and the communication link of each DCU communication, even can recover the back at the DCU communication link failure and recover communication automatically.
The technical solution adopted for the present invention to solve the technical problems is following:
The communication architecture of subway shield door control system comprises that PSA, Ethernet, PEDC, Ethernet change CAN module, DCU, and PSA connects PEDC through Ethernet; PSA changes the CAN module through Ethernet and connects each DCU; Each DCU and Ethernet change the CAN module all has two CAN mouths, and DCU is divided into two groups, and every group DCU is articulated to two Ethernets respectively to be changeed on the CAN module; The network configuration that the formation intersection articulates, PSA is responsible for the communication of scheduling comprehensively and each DCU.
Adopt response mode to carry out communication better, PSA is a main frame, the communication of scheduling and each equipment, and DCU and PEDC are slave, wait for the PSA request.
PSA allocates the used link of each DCU among every group of DCU in advance better, when fault, avoids faulty link, and can regularly attempt faulty link, recovers and its communication.
PSA is through overtime judgement DCU link failure better.
With one group of DCU communication is example, and when poll began, PSA allocated the used link of each DCU among this group DCU in advance, under normal circumstances, presses following distribute links:
DCU01---CAN link 1
DCU02---CAN link 2
DCU03---CAN link 1
DCU04---CAN link 2
DCU05---CAN link 1
DCU06---CAN link 2
……。
If certain bar link failure of certain DCU then can be avoided this link and continue cross-assignment.Article two, link concurrent communication simultaneously increases the communication bandwidth, after PSA and exchanges data of a DCU completion, continues to carry out communication with next DCU on this link.After accomplishing communication, then carry out communication with DCU03 with DCU01.
Fault judgement is carried out through timeout mechanism, like DCU does not reply PSA in the ticket reserving time request, then judges this link failure of this DCU, and the distribution of when next distribute links, skipping this this link of DCU simultaneously changes into and distributes another link of this DCU.
At regular intervals, PSA can distribute link one time according to normal condition, if this moment, faulty link recovered, then can reply the request of PSA at this moment, and PSA just knows that this link has recovered normal.
PSA is connected with PEDC through Ethernet on the connected mode of the present invention, and PSA changes the CAN module through Ethernet and is connected with each DCU, and two CAN mouths are arranged on each DCU, articulates through grouping and cross-coupled mode and Ethernet commentaries on classics CAN module.On the communication modes, be main frame with PSA, PEDC and each DCU are slave, reply the formula communication, and the communication link of each DCU of PSA meeting smart allocation.In the troubleshooting, when the single-CAN link failure of a certain DCU, can work on its another CAN link, and after this link is normal, but the instant recovery communication.The present invention can realize that automatic detection communication channel, communication link Hot Spare, the link of subway shield door control system break off intelligence restoration, communication channel smart allocation; Has ability to work under adverse circumstances; Guarantee the reliability of communication; Increase the bandwidth of communication, and avoid unnecessary manual work to get involved.
Description of drawings
Fig. 1 is a whole communications rack composition of the present invention.
1.PSA among the figure, 2. Ethernet, 3.PEDC, 4. Ethernet changes CAN module, 5.CAN bus, 6.DCU.The DCU in left side is divided into one group, the right side be divided into another group.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is described further.
As shown in Figure 1, PSA 1 directly connects PEDC 3 with ethernet line 2,, PSA1 changes CAN module 4 with ethernet line 2 and Ethernet and is connected, and Ethernet changes CAN module 4 and is connected with two groups of DCU 6 through CAN bus 5 again.
CAN adopts 250Kbps, two CAN bus concurrency operations, and theoretical communication speed is 500Kbps.
Principal and subordinate's polling mode is adopted in the communications protocol independent research, and PSA is a main frame, and each DCU and PEDC are slave, and when not receiving the PSA request, each slave all is in the wait accepting state, can initiatively not occupy bus, does not have the bus collision problem.
When DCU fault or the disconnection of a certain CAN line, PSA can and show fault through overtime timely discovery, when next distribute links, avoid this link simultaneously, avoids unnecessary waiting-timeout with this.
Claims (4)
1. the communication architecture of subway shield door control system is characterized in that: comprise that PSA, Ethernet, PEDC, Ethernet change CAN module, DCU, PSA connects PEDC through Ethernet; PSA changes the CAN module through Ethernet and connects each DCU; Each DCU and Ethernet change the CAN module all has two CAN mouths, and DCU is divided into two groups, and every group DCU is articulated to two Ethernets respectively to be changeed on the CAN module; The network configuration that the formation intersection articulates, PSA is responsible for the communication of scheduling comprehensively and each DCU.
2. the communication architecture of subway shield door control system according to claim 1 is characterized in that: adopt response mode to carry out communication, PSA is a main frame, the communication of scheduling and each equipment, and DCU and PEDC are slave, wait for the PSA request.
3. the communication architecture of subway shield door control system according to claim 1 and 2 is characterized in that: PSA allocates the used link of each DCU among every group of DCU in advance, when fault, avoids faulty link, and can regularly attempt faulty link, recovers and its communication.
4. the communication architecture of subway shield door control system according to claim 1 and 2 is characterized in that: PSA is through overtime judgement DCU link failure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103117287A CN102821016A (en) | 2012-08-29 | 2012-08-29 | Communication framework of metro platform-edge door control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103117287A CN102821016A (en) | 2012-08-29 | 2012-08-29 | Communication framework of metro platform-edge door control system |
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| CN102821016A true CN102821016A (en) | 2012-12-12 |
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| CN2012103117287A Pending CN102821016A (en) | 2012-08-29 | 2012-08-29 | Communication framework of metro platform-edge door control system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105096516A (en) * | 2014-05-23 | 2015-11-25 | 株洲南车时代电气股份有限公司 | Shield door voice prompt device and method and shield door system |
| CN112532494A (en) * | 2019-09-18 | 2021-03-19 | 北京天乐泰力科技发展有限公司 | Data transmission system and data transmission method based on CAN network switching |
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| CN101631057A (en) * | 2009-08-17 | 2010-01-20 | 北京航空航天大学 | Network control method of dual-redundancy CAN bus |
| CN102592333A (en) * | 2011-01-11 | 2012-07-18 | 松下电气机器（北京）有限公司 | Failure information feedback system of subway shielding door |
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2012
- 2012-08-29 CN CN2012103117287A patent/CN102821016A/en active Pending
Patent Citations (3)
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|---|---|---|---|---|
| CN101018179A (en) * | 2007-03-07 | 2007-08-15 | 今创集团有限公司 | Data bus bridge and its working method |
| CN101631057A (en) * | 2009-08-17 | 2010-01-20 | 北京航空航天大学 | Network control method of dual-redundancy CAN bus |
| CN102592333A (en) * | 2011-01-11 | 2012-07-18 | 松下电气机器（北京）有限公司 | Failure information feedback system of subway shielding door |
Non-Patent Citations (1)
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| 赵成光: "广州地铁屏蔽门***与现场总线", 《工业控制计算机》, vol. 14, no. 4, 30 April 2001 (2001-04-30) * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105096516A (en) * | 2014-05-23 | 2015-11-25 | 株洲南车时代电气股份有限公司 | Shield door voice prompt device and method and shield door system |
| CN105096516B (en) * | 2014-05-23 | 2017-08-25 | 株洲南车时代电气股份有限公司 | Shield door sound prompt device, method and screen door |
| CN112532494A (en) * | 2019-09-18 | 2021-03-19 | 北京天乐泰力科技发展有限公司 | Data transmission system and data transmission method based on CAN network switching |
| CN112532494B (en) * | 2019-09-18 | 2022-07-08 | 北京天乐泰力科技发展有限公司 | Data transmission system and data transmission method based on CAN network switching |
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Application publication date: 20121212 |