CN112255909A - Redundant communication bus data fusion method and system - Google Patents
Redundant communication bus data fusion method and system Download PDFInfo
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- CN112255909A CN112255909A CN202011277971.2A CN202011277971A CN112255909A CN 112255909 A CN112255909 A CN 112255909A CN 202011277971 A CN202011277971 A CN 202011277971A CN 112255909 A CN112255909 A CN 112255909A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
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- G05B9/03—Safety arrangements electric with multiple-channel loop, i.e. redundant control systems
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Abstract
The invention discloses a redundant communication bus data fusion method and a system, wherein two independent communication buses are respectively established by using two communication modules and each device on a slave station, and each data point on each bus is marked with a quality mark and is 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 point with normal quality as a result after fusion.
Description
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 (4)
1. A data fusion method for a redundant communication bus is characterized by comprising 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 the acquired bus data of all the slave stations 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 double-bus data according to the quality marks of each data point by the following method:
when the quality of a certain data point of 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 one data point of the bus I and the bus II is normal and the quality of one data point of the bus I and 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 of the bus I and the bus II is a dead point, judging the data point as a fault data point.
2. The method of claim 1, wherein the quality flag is bad and comprises a communication interrupt and a data overflow.
3. A redundant communication bus data fusion system for implementing the method of claim 1, the system comprising:
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 is used for establishing communication with each device on the bus and acquiring related data information, and the information comprises quality marks of each data point;
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.
4. The redundant communication bus data fusion system of claim 3 wherein the communication modules and the data processing modules are connected in a one-to-one correspondence or one data module is connected to both communication modules simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202011277971.2A CN112255909A (en) | 2020-11-16 | 2020-11-16 | Redundant communication bus data fusion method and system |
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| CN202011277971.2A CN112255909A (en) | 2020-11-16 | 2020-11-16 | Redundant communication bus data fusion method and system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116774570A (en) * | 2023-08-23 | 2023-09-19 | 成都飞航智云科技有限公司 | Redundancy data analysis method and system |
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- 2020-11-16 CN CN202011277971.2A patent/CN112255909A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116774570A (en) * | 2023-08-23 | 2023-09-19 | 成都飞航智云科技有限公司 | Redundancy data analysis method and system |
| CN116774570B (en) * | 2023-08-23 | 2023-11-07 | 成都飞航智云科技有限公司 | Redundancy data analysis method and system |
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