CN112255909A

CN112255909A - Redundant communication bus data fusion method and system

Info

Publication number: CN112255909A
Application number: CN202011277971.2A
Authority: CN
Inventors: 曾卫东; 王哲蓓; 刘茜; 宋美艳; 胡波; 徐卫峰; 蔡丹; 薛建中; 于在松
Original assignee: NR Engineering Co Ltd; Xian Thermal Power Research Institute Co Ltd
Current assignee: NR Engineering Co Ltd; Xian Thermal Power Research Institute Co Ltd
Priority date: 2020-11-16
Filing date: 2020-11-16
Publication date: 2021-01-22

Abstract

The invention discloses a redundant communication bus data fusion method and system. Two communication modules are used to establish two independent communication buses with each device on a slave station, and each data point on each bus is marked with a quality mark for transmission. into the data processing module; the data processing module processes and quality filters each data point on the two buses, and selects the data points with normal quality as the fusion result, which has stronger communication than the traditional redundant communication bus scheme. Reliability, has a wide range of application value.

Description

Redundant communication bus data fusion method and system

Technical Field

The invention relates to a redundant communication bus data fusion method and a redundant communication bus data fusion system, and belongs to the technical field of industrial process control automation.

Background

The technical field of industrial process control automation widely needs to adopt a communication bus mode to acquire data information from each device, a redundant communication bus mode needs to be established in order to improve the reliability of the bus, and the prior art has the defect that the data information acquisition is incomplete aiming at the condition that partial faults occur in double buses, so that the effective resources of the redundant bus are greatly wasted.

Disclosure of Invention

In order to overcome the problems in the prior art, the present invention provides a method and a system for fusing redundant communication bus data, which have stronger communication reliability and wider application value.

In order to achieve the purpose, the invention is realized by adopting the following technical scheme:

on one hand, the invention provides a redundant communication bus data fusion method, which comprises the following steps:

1. each device on the slave station establishes two independent communication buses, namely a bus I and a bus II, and a communication module respectively connected with the two independent communication buses marks data quality marks on all data points of the connected communication buses;

2. the data processing module divides all the acquired slave station bus data according to a single point;

3. the communication module transmits the data points with the data quality marks to the data processing module, and the data processing module performs fusion of the dual-bus data according to the quality marks of each data point by the following method:

when the quality of a certain data point on the bus I and the bus II is normal, fixedly selecting the data point on one bus as a result after fusion;

when the quality of a certain data point on the bus I and the bus II is normal and the quality of the certain data point on the bus II is dead, selecting the data point on the bus with normal quality as a result after fusion;

and when the quality of a certain data point on the bus I and the bus II is a dead point, judging the data point as a fault data point.

Further, the quality mark as a dead pixel includes all data point quality discrimination attribute marks such as communication interruption, data overflow and the like.

In another aspect, the present invention further provides a redundant communication bus data fusion system, including:

the bus I and the bus II are connected with each device on the slave station;

the communication module is respectively connected with the bus I and the bus II and used for establishing communication connection with slave station equipment on the bus, and acquiring the quality attribute of communication acquisition information of all the equipment;

and the data processing module is used for segmenting all the acquired slave station bus data according to a single point and fusing redundant bus data according to the quality mark of each data point.

Furthermore, the communication modules and the data processing module can be in one-to-one correspondence for communication, and one data module can simultaneously correspond to two communication modules.

The invention provides a redundant communication bus data fusion method and a system, wherein two independent communication buses are established by using two communication modules and all slave station equipment, and effective quality information of all data points on each bus is acquired and sent to a data processing module; the data processing module processes and quality screens each data point on the two buses, the data with normal quality is selected as a result after fusion, and when the data points with abnormal quality are inconsistent on the two buses, the scheme has stronger communication reliability and wider application value.

Drawings

Fig. 1 is a connection diagram of a redundant communication bus data fusion system according to an embodiment of the present invention.

Detailed Description

The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

As shown in fig. 1, the method for fusing data of redundant communication buses of the present invention includes the following steps:

(1) each device on the slave station establishes two independent communication buses, namely a bus I and a bus II, and a communication module respectively connected with the two independent communication buses marks data quality marks on all data points of the connected communication buses;

(2) the data processing module divides all the acquired slave station bus data according to a single point;

(3) the communication module transmits the data points with the data quality marks to the data processing module, and the data processing module performs fusion of redundant bus data according to the quality marks of each data point by the following method:

when the quality of a certain point on the bus I and the bus II is normal, a data point on one of the buses is fixedly selected as a result after fusion;

when one of the qualities of a certain point on the bus I and the bus II is normal and the other is a dead point, selecting a data point on the bus with the normal quality as a result after fusion;

and when the quality of a certain point on the bus I and the bus II is a dead point, judging the data point as a fault data point.

Referring to the example case of fig. 1, data 2 on bus i and data 1, 4 on bus ii are dead pixels, and data 2 on bus ii and data 1, 4 on bus i are selected as the result of the fusion according to the above-described fusion method.

Referring to the example case of fig. 1, when the communication between the device 3 on the bus i and the device 1 on the bus ii fails, the corresponding data point is marked as a dead point due to the communication failure, and the data point of the device 3 on the bus ii and the data point of the device 1 on the bus i are used as the fused result according to the above fusion method.

Under the two groups of example conditions, the quality of the fused data points is normal, and the influence on the communication reliability when partial faults occur in both buses is avoided.

The embodiment of the invention provides a redundant communication bus data fusion method and a system, wherein two independent communication buses are established by two independent communication modules and slave station equipment on the buses, and effective quality information of all data points on each bus is acquired and sent to a data processing module; the data processing module processes and quality-filters each data point on the two buses, and selects the data with normal quality as a result after fusion.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, for example, a communication module and a data processing module implemented device include but are not limited to a software or hardware implementation; such modifications and variations are considered to be within the scope of the invention.

Claims

1. a redundant communication bus data fusion method, is characterized in that, described method comprises the steps:

(1) Each device on the slave station establishes two independent communication buses, namely bus I and bus II. The communication modules connected to the two independent communication buses respectively mark all data points of the connected communication bus with data quality marks. ;

(2) The data processing module divides and processes all the slave bus data collected according to a single point;

(3), the communication module transmits the data points marked with the data quality mark to the data processing module, and the data processing module performs the fusion of dual bus data according to the quality mark of each data point as follows:

When the quality of a certain data point of bus I and bus II is normal, the data point on one of the buses is fixedly selected as the result after fusion;

When the quality of a certain data point of bus I and bus II is normal and the other is bad, select the data point on the bus with normal quality as the result after fusion;

When the quality of a certain data point of bus I and bus II are all bad points, the data point is judged as a faulty data point.

2 . The method for merging redundant communication data buses according to claim 1 , wherein the quality marking as bad pixels includes communication interruption and data overflow. 3 .

3. the redundant communication bus data fusion system that realizes the method of claim 1, is characterized in that, described system comprises:

Bus I and bus II connected to each device on the slave station;

A communication module connected to bus I and bus II respectively for establishing communication with each device on the bus and acquiring relevant data information, the information including the quality marks of each data point;

A data processing module that divides and processes all the collected slave bus data according to a single point and fuses redundant bus data according to the quality mark of each data point.

4 . The redundant communication bus data fusion system according to claim 3 , wherein the communication module and the data processing module are connected in a one-to-one correspondence or a data module is connected with two communication modules simultaneously. 5 .