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Inter-board communication component based on POWERLINK technology

A technology between communication components and boards, applied in data exchange through path configuration, bus network, etc., can solve problems such as long delay, communication data packet loss, affecting system security and availability, etc., to achieve reliability and real-time performance Excellent, easy-to-achieve effects

Active Publication Date: 2014-10-01
CASCO SIGNAL
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Problems solved by technology

[0006] At present, in the field of rail transit signals, most of the communication between boards or systems still relies on the traditional Ethernet TCP / IP protocol, which is a non-real-time Ethernet protocol, and often occurs due to busy network communication or attacks caused by viruses and Trojan horses. Problems such as data packet loss and long delay affect the security and availability of the overall system

Method used

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  • Inter-board communication component based on POWERLINK technology
  • Inter-board communication component based on POWERLINK technology
  • Inter-board communication component based on POWERLINK technology

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Embodiment

[0026] The system is based on the MPS security computer architecture and is used to replace the serial port and network communication components in the current MPS system to realize synchronization and data exchange functions. It consists of two MPU boards, one MCU board (including two MCU sub-modules) and related POWERLINK real-time Ethernet interface expansion boards.

[0027] The POWERLINK real-time Ethernet interface expansion board mainly realizes the communication between the MPU board and the MCU board. It consists of P3 master station and three other slave stations (P1 / P2 / P4), using 100M Ethernet redundant HUB connection or closed-loop daisy chain connection (such as figure 1 and figure 2 shown).

[0028] The P3 master station realizes the functions of generating synchronous messages of the system, sending the message data of the master station, and receiving the message data of the other three sub-stations (320 bytes / sub-station, used to receive the check word data...

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Abstract

The invention relates to an inter-board communication component based on the POWERLINK technology. The inter-board communication component comprises a CPCI master station unit, a CPCI slave station unit, a PMC slave station unit and component interface software, wherein the CPCI master station unit is used for synchronizing communication of the slave station units, sending master station messages and receiving slave station messages; the CPCI slave station unit is used for responding to synchronous communication interruption and receiving and sending the station messages; the PMC slave station unit is used for responding to synchronous communication interruption and receiving and sending the station messages; the component interface software comprises two parts, one part is used for achieving the POWERLINK communication data receiving and sending function in a POWERLINK communication interface board of each unit, and the other part is located in a master board of each unit and used for reading and writing communication data from a PCI interface and handling communication errors. Compared with the prior art, the inter-board communication component has the advantages of being high in real-time performance and reliability, small in transmission delay and jitter, low in cost and the like.

Description

technical field [0001] The invention relates to an inter-board communication component, in particular to an inter-board communication component based on POWERLINK technology. Background technique [0002] Fieldbus has a long history. Several fieldbuses appeared earlier and were widely used, such as CAN, deviceNet, modBus, RS485, etc. These buses are slow and the data packets transmitted each time are small. With the development of industrial automation from low speed to high speed, from low precision to high precision, and from centralized control to distributed control, new requirements are put forward for the transmission speed and data volume of the field bus. Therefore, many manufacturers have proposed to realize the field bus based on Ethernet technology, and these industrial real-time Ethernet technologies such as POWERLINK, EtherNet / IP, ModBusTCP, ProfinetRT, EtherCat, and MECHATROLINK were born. [0003] At present, there are many kinds of high-speed real-time field...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/40
Inventor 王澜蒋耀东孙军峰
Owner CASCO SIGNAL
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