Data interaction system and data interaction method
A data interaction and data technology, applied in the field of data communication, can solve the problems of increasing control costs, inflexible use, and difficulty in judging the starting point of communication sorting, and achieves the effect of simple implementation and flexible use.
Active Publication Date: 2021-08-24
CRRC QINGDAO SIFANG ROLLING STOCK RES INST
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Problems solved by technology
There is often a problem of ordering the starting point of the communication when the bus data of different levels is interactively communicated, that is, when the data conversion and interaction are performed by the same network bus node, due to the periodic communication characteristics of the bus, the data in the data sending port is exchanged in sequence due to the change of the network status. The ordering problem of communication origins
Existing solutions have certain defects such as judging the starting point of communication sorting is difficult and easy to misjudgment; an additional control unit is added to intervene the bus communication by applying voltage to the communication bus to make the bus communication in a prohibited state, which increases the control cost; it cannot effectively solve the problem of data communication. Error problem; extra setting timer, inflexible use and other features
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[0033] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0034] A data interaction system is used for data communication between multi-level network systems, including a two-level network as an example. Under normal circumstances, take a first-level network node including five communication nodes as an example. Each port stores the communication data that needs to be transmitted and converted by a second-level network device mounted under a first-level network node. Under normal circumstances, the communication data of each port The order is ABCDE, which corresponds to the communication data that needs to be transmitted ...
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The present invention provides a data interaction system and a data interaction method. The data interaction system includes: a first-level network: including at least two first-level network nodes, and each first-level network node communicates with each other; a second-level network: including multiple second-level network nodes Each of the second-level subnetworks includes second-level network devices, and each second-level subnetwork is connected to a first-level network node. The data interaction method is as follows: when the state of the first-level network node changes, the first-level network node suspends the data communication with the second-level network device, and sends the state change start information and end information to the second-level network device; the second-level network device obtains the first-level The network node status information is initialized after the status change of the first-level network node is recognized, and the communication with the first-level network node is resumed after the status change of the first-level network node is completed. The system and method solve the problem of data sequence exchange in the data sending port caused by the change of the bus state from the software, and are simple to implement and flexible to use.
Description
technical field [0001] The invention relates to the technical field of data communication, in particular to a data interaction system and a data interaction method. Background technique [0002] When different devices communicate via transmission lines, they often follow a communication control technology to communicate, such as distributed field bus communication LonWorks ((Lucal Operating Netwok), twisted train level bus WTB (WireTrain Bus) communication, multi-function vehicle bus MVB (Multifunction Vehicle Bus) communication, CAN (Controller Area Network) communication, etc. [0003] Network control systems mostly use two-level or multi-level bus communication architecture to realize more complex network control and data communication. There is often a problem of ordering the starting point of the communication when the bus data of different levels is interactively communicated, that is, when the data conversion and interaction are performed by the same network bus node...
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IPC IPC(8): H04L12/40
CPCH04L12/40006
Inventor刘成瑞殷培强樊会星王学伦
OwnerCRRC QINGDAO SIFANG ROLLING STOCK RES INST