CN113900771A - Industrial data transmission method using container cloud host - Google Patents
Industrial data transmission method using container cloud host Download PDFInfo
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- CN113900771A CN113900771A CN202111197315.6A CN202111197315A CN113900771A CN 113900771 A CN113900771 A CN 113900771A CN 202111197315 A CN202111197315 A CN 202111197315A CN 113900771 A CN113900771 A CN 113900771A
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000001514 detection method Methods 0.000 claims abstract description 12
- 238000012545 processing Methods 0.000 claims abstract description 5
- 238000004891 communication Methods 0.000 claims description 4
- 238000013500 data storage Methods 0.000 claims description 4
- 238000012544 monitoring process Methods 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/455—Emulation; Interpretation; Software simulation, e.g. virtualisation or emulation of application or operating system execution engines
- G06F9/45533—Hypervisors; Virtual machine monitors
- G06F9/45558—Hypervisor-specific management and integration aspects
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/1001—Protocols in which an application is distributed across nodes in the network for accessing one among a plurality of replicated servers
- H04L67/1034—Reaction to server failures by a load balancer
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/1097—Protocols in which an application is distributed across nodes in the network for distributed storage of data in networks, e.g. transport arrangements for network file system [NFS], storage area networks [SAN] or network attached storage [NAS]
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/455—Emulation; Interpretation; Software simulation, e.g. virtualisation or emulation of application or operating system execution engines
- G06F9/45533—Hypervisors; Virtual machine monitors
- G06F9/45558—Hypervisor-specific management and integration aspects
- G06F2009/45595—Network integration; Enabling network access in virtual machine instances
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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Abstract
The invention provides an industrial data transmission method using a container cloud host, which comprises four steps of equipment detection, fault processing, contact establishment and data transmission, wherein a user selects a proper container cloud host to stably connect and transmit industrial data by controlling industrial terminal equipment, the proper container cloud host is selected to transmit data according to the judgment that whether the current connected container cloud host can normally transmit the data, whether a standby container cloud host exists, the data transmission rate and the like, if the proper container cloud host does not exist, the industrial terminal can select to temporarily store the data in the industrial terminal, so that the safety and the integrity of the data are kept, and meanwhile, the connection is always kept after the connected container cloud host is determined to deal with the sudden data transmission.
Description
Technical Field
The invention relates to the technical field of cloud computing container networks, in particular to an industrial data transmission method using a container cloud host.
Background
The cloud computing technology is a super computing mode based on the internet, the principle is that computing and task distribution are carried out through a large number of distributed hosts, the computing mode has certain sharing performance, the requirement of cloud computing on equipment at a user side is low, and the cloud computing is convenient to use, so that wider services can be better provided for users, the cloud computing is more popular with customers in a business mode, and the cloud computing has an important position on the industrial internet;
the development and maturity of the cloud computing technology enable the industrial container cloud to be correspondingly improved, although the reliability of the service is improved, the possibility of disconnection between the client and the server is smaller and smaller, the reliability of the service cannot reach one hundred percent, and the traditional industrial container cloud can also face the problem of disconnection between the client and the server, so that the invention provides the industrial data transmission method using the container cloud host to solve the problems in the prior art.
Disclosure of Invention
In view of the above problems, an object of the present invention is to provide an industrial data transmission method using a container cloud host, in which an industrial terminal device is controlled to select a suitable container cloud host for stable connection and industrial data transmission, and if there is no suitable container cloud host, the industrial terminal selects to temporarily store data itself, so as to maintain the security and integrity of the data.
In order to realize the purpose of the invention, the invention is realized by the following technical scheme: an industrial data transmission method using a container cloud host, comprising the steps of:
step one, equipment monitoring
Firstly, controlling the industrial terminal equipment to send detection data to the container cloud host, wherein the detection data is used for detecting current operation data of the container cloud host and judging whether the container cloud host has a fault or not;
step two, fault processing
If the fault exists in the current container cloud host, the industrial terminal equipment further performs detection and judgment, and whether a standby container cloud host provides a data storage function is available or not;
step three, establishing contact
If the industrial terminal equipment judges that the standby container cloud host exists in the second step, the industrial terminal equipment establishes contact with the standby container cloud host and detects the transmission rate of the standby container cloud host to determine whether the subsequent data transmission is suitable or not;
step four, data transmission
If the industrial terminal device detects that the transmission rate of the standby container cloud host is greater than or equal to the network speed weight in the third step, the standby container cloud host is used as a storage end, and connection is established so as to transmit and process industrial data.
The further improvement lies in that: in the first step, the current operation data includes host configuration, network configuration, data volume configuration, operation state, environment variable and operation command.
The further improvement lies in that: in the second step, if the industrial terminal device does not judge that the standby container cloud host exists, the industrial data can be stored in the industrial terminal device.
The further improvement lies in that: in the third step, if the industrial terminal device detects that the transmission rate of the cloud host of the standby container is smaller than the network speed weight, the industrial data can be stored in the industrial terminal device.
The further improvement lies in that: in the fourth step, after the industrial terminal device is connected with the standby container cloud host, the industrial terminal device does not release the connection and always keeps data communication with the standby container cloud host.
The further improvement lies in that: in the third step, when multiple groups of standby container cloud hosts are owned, the industrial terminal equipment selects one group of standby container cloud hosts with the largest network speed weight to establish data connection.
The further improvement lies in that: in the fourth step, the net speed weight is defined as 1843 KB/s.
The invention has the beneficial effects that: according to the industrial data transmission method using the container cloud host, the industrial terminal device is controlled to select the proper container cloud host to stably connect and transmit industrial data, whether the currently connected container cloud host can normally transmit data, whether a standby container cloud host exists, the data transmission rate and the like are taken as judgment bases, the proper container cloud host is selected to transmit the data, if the proper container cloud host does not exist, the industrial terminal can select to temporarily store the data, so that the safety and the integrity of the data are kept, meanwhile, the connection is always kept after the connected container cloud host is determined, and the sudden data transmission is responded.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic diagram illustrating a first embodiment of the present invention.
Fig. 2 is a schematic flow chart according to a first embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," "fourth," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example one
According to fig. 1-2, the present embodiment provides an industrial data transmission method using a container cloud host, including the following steps:
step one, equipment monitoring
Firstly, controlling industrial terminal equipment to send detection data to a container cloud host, wherein the detection data is used for detecting current operation data of the container cloud host and judging whether the container cloud host has a fault or not, and in the first step, the current operation data comprises host configuration, network configuration, data volume configuration, operation state, environment variables and operation commands;
step two, fault processing
If the industrial terminal equipment judges that the current container cloud host has a fault in the first step, further detecting and judging whether a standby container cloud host provides a data storage function, and if the industrial terminal equipment does not judge that the standby container cloud host exists in the second step, storing industrial data in the industrial terminal equipment;
step three, establishing contact
If the industrial terminal equipment judges that the standby container cloud host exists in the second step, the industrial terminal equipment establishes contact with the standby container cloud host and detects the transmission rate of the standby container cloud host and whether the subsequent data transmission is suitable or not, in the third step, the industrial terminal equipment detects that the transmission rate of the standby container cloud host is smaller than the network speed weight, the industrial data can be stored in the industrial terminal equipment, and in the third step, when a plurality of groups of standby container cloud hosts are possessed, the industrial terminal equipment selects one group of standby container cloud hosts with the largest network speed weight to establish data connection;
step four, data transmission
If the industrial terminal device detects that the transmission rate of the standby container cloud host is greater than or equal to the network speed weight in the third step, the standby container cloud host is used as a storage end, connection is established, and industrial data are transmitted and processed, in the fourth step, after the industrial terminal device is connected with the standby container cloud host, the industrial terminal device does not release the connection and can always keep data communication with the standby container cloud host, and in the fourth step, the network speed weight is defined as 1843 KB/s.
Example two
The embodiment provides an industrial data transmission method using a container cloud host, which comprises the following steps:
step one, equipment monitoring
Firstly, a user controls industrial terminal equipment to send detection data to a container cloud host, the detection data are used for detecting current operation data of the container cloud host and judging whether the container cloud host has a fault or not, if the container cloud host has the fault, the industrial terminal equipment feeds back the information so that the user can be connected with related personnel to process the information, and then the next step is carried out, wherein in the step one, the current operation data comprise host configuration, network configuration, data volume configuration, operation state, environment variables and operation commands;
step two, fault processing
If the industrial terminal equipment judges that the current container cloud host has a fault in the first step, further detection and judgment are carried out, whether a standby container cloud host provides a data storage function or not is judged, and if the industrial terminal equipment does not judge that the standby container cloud host exists, industrial data can be stored in the industrial terminal equipment to ensure the safety and the integrity of the data;
step three, establishing contact
If the industrial terminal equipment judges that the standby container cloud host exists in the second step, the industrial terminal equipment establishes contact with the standby container cloud host and detects the transmission rate of the standby container cloud host and whether the subsequent data transmission is suitable or not, in the third step, the industrial terminal equipment detects that the transmission rate of the standby container cloud host is smaller than the network speed weight, the industrial data are stored in the industrial terminal equipment, in the third step, when a plurality of groups of standby container cloud hosts are possessed, the industrial terminal equipment selects one group of standby container cloud host with the largest network speed weight to establish data connection, after the industrial terminal equipment establishes data connection with the standby container cloud host, test data are sent out to detect the stability after the data connection, and when the stability of the data connection is poor, the industrial terminal equipment is switched to the next standby container cloud host with the second network speed weight to establish data connection, the problem of data loss caused by disconnection in the data transmission process is solved;
step four, data transmission
If the industrial terminal device detects that the transmission rate of the standby container cloud host is greater than or equal to the network speed weight in the third step, the standby container cloud host is used as a storage end, connection is established to transmit and process industrial data, in the fourth step, after the industrial terminal device is connected with the standby container cloud host, the industrial terminal device does not release the connection and can keep data communication with the standby container cloud host all the time, meanwhile, the industrial terminal device sends a fixed model to the storage end every ten seconds, if the industrial terminal device receives the fixed reply, the working terminal device can know the state of the storage end at the first time, and in the fourth step, the network speed weight is defined as 1843 KB/s.
In step four, we define the wire speed weight W1843 KB/s as the lowest reference standard of the upstream wire speed, and calculate the weighted average of the upstream wire speed in five seconds of the standby server using the formula:
wherein A is a weighted average, the weighted average A is compared with a network speed weight W, if A is more than W, the standby container cloud host is used for connection transmission, otherwise, the standby container cloud host is not connected, and when a plurality of standby container cloud hosts are owned and A is satisfied1A2…ANWhen both are larger than W, A1A2 … ANThe largest one A will be selectedNThe represented container cloud host performs data transmission, and the relationship is shown in table one:
A1<W | data store itself |
A1>W | Selection A1As a storage terminal |
A1=W | Selection A1As a storage terminal |
A1&An>W,A1>An | Selection A1As a storage terminal |
A1&An>W,A1<An | Selection AnAs a storage terminal |
Wherein W represents the wire speed weight, A1Represents the network speed weighted average of the cloud host of the first container, AnAnd representing the network speed weighted average of the nth container cloud host.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. An industrial data transmission method using a container cloud host is characterized in that: the method comprises the following steps:
step one, equipment monitoring
Firstly, controlling the industrial terminal equipment to send detection data to the container cloud host, wherein the detection data is used for detecting current operation data of the container cloud host and judging whether the container cloud host has a fault or not;
step two, fault processing
If the fault exists in the current container cloud host, the industrial terminal equipment further performs detection and judgment, and whether a standby container cloud host provides a data storage function is available or not;
step three, establishing contact
If the industrial terminal equipment judges that the standby container cloud host exists in the second step, the industrial terminal equipment establishes contact with the standby container cloud host and detects the transmission rate of the standby container cloud host to determine whether the subsequent data transmission is suitable or not;
step four, data transmission
If the industrial terminal device detects that the transmission rate of the standby container cloud host is greater than or equal to the network speed weight in the third step, the standby container cloud host is used as a storage end, and connection is established so as to transmit and process industrial data.
2. The industrial data transmission method using the container cloud host according to claim 1, wherein: in the first step, the current operation data includes host configuration, network configuration, data volume configuration, operation state, environment variable and operation command.
3. The industrial data transmission method using the container cloud host according to claim 1, wherein: in the second step, if the industrial terminal device does not judge that the standby container cloud host exists, the industrial data can be stored in the industrial terminal device.
4. The industrial data transmission method using the container cloud host according to claim 1, wherein: in the third step, if the industrial terminal device detects that the transmission rate of the cloud host of the standby container is smaller than the network speed weight, the industrial data can be stored in the industrial terminal device.
5. The industrial data transmission method using the container cloud host according to claim 1, wherein: in the fourth step, after the industrial terminal device is connected with the standby container cloud host, the industrial terminal device does not release the connection and always keeps data communication with the standby container cloud host.
6. The industrial data transmission method using the container cloud host according to claim 1, wherein: in the third step, when multiple groups of standby container cloud hosts are owned, the industrial terminal equipment selects one group of standby container cloud hosts with the largest network speed weight to establish data connection.
7. The industrial data transmission method using the container cloud host according to claim 1, wherein: in the fourth step, the net speed weight is defined as 1843 KB/s.
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Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107566208A (en) * | 2017-08-08 | 2018-01-09 | 西安电子科技大学 | The inspection method of civil aviaton's communication system network state |
US20180173733A1 (en) * | 2016-12-19 | 2018-06-21 | Capital One Services, Llc | Systems and methods for providing data quality management |
CN111274530A (en) * | 2020-01-19 | 2020-06-12 | 北京理工大学 | Container cloud resource prediction method |
CN112153134A (en) * | 2020-09-18 | 2020-12-29 | 北京浪潮数据技术有限公司 | Disaster tolerance drilling method, device, equipment and storage medium of disaster tolerance cloud host |
CN112506717A (en) * | 2020-06-11 | 2021-03-16 | 石霜霜 | Data processing method combining edge computing and 5G communication and central cloud server |
CN112995335A (en) * | 2021-04-07 | 2021-06-18 | 上海道客网络科技有限公司 | Position-aware container scheduling optimization system and method |
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Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20180173733A1 (en) * | 2016-12-19 | 2018-06-21 | Capital One Services, Llc | Systems and methods for providing data quality management |
CN107566208A (en) * | 2017-08-08 | 2018-01-09 | 西安电子科技大学 | The inspection method of civil aviaton's communication system network state |
CN111274530A (en) * | 2020-01-19 | 2020-06-12 | 北京理工大学 | Container cloud resource prediction method |
CN112506717A (en) * | 2020-06-11 | 2021-03-16 | 石霜霜 | Data processing method combining edge computing and 5G communication and central cloud server |
CN112153134A (en) * | 2020-09-18 | 2020-12-29 | 北京浪潮数据技术有限公司 | Disaster tolerance drilling method, device, equipment and storage medium of disaster tolerance cloud host |
CN112995335A (en) * | 2021-04-07 | 2021-06-18 | 上海道客网络科技有限公司 | Position-aware container scheduling optimization system and method |
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