CN116155831A - Data transmission method and system for railway production management system - Google Patents
Data transmission method and system for railway production management system Download PDFInfo
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- CN116155831A CN116155831A CN202211693348.4A CN202211693348A CN116155831A CN 116155831 A CN116155831 A CN 116155831A CN 202211693348 A CN202211693348 A CN 202211693348A CN 116155831 A CN116155831 A CN 116155831A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims abstract description 17
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- 238000007726 management method Methods 0.000 description 11
- 238000004891 communication Methods 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 2
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- 238000004458 analytical method Methods 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/50—Queue scheduling
- H04L47/62—Queue scheduling characterised by scheduling criteria
- H04L47/625—Queue scheduling characterised by scheduling criteria for service slots or service orders
- H04L47/6275—Queue scheduling characterised by scheduling criteria for service slots or service orders based on priority
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/50—Queue scheduling
- H04L47/62—Queue scheduling characterised by scheduling criteria
- H04L47/622—Queue service order
- H04L47/6235—Variable service order
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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
- Y02P90/30—Computing systems specially adapted for manufacturing
Abstract
The invention provides a data transmission method and a data transmission system for a railway production management system, which comprise the following steps: establishing point-to-point message queues between each station section and the electric service part, and configuring queue priority for each message queue; the data priority is determined according to the real-time property of the data; the queue priority is determined according to the unit grade of the receiver; when a message is required to be sent, a sender adds data to be sent into a corresponding message queue; the receiver acquires the data to be transmitted from the corresponding message queues in sequence according to the sequence from the high priority to the low priority of the queues, and transmits the data to be transmitted to the corresponding application systems for consumption.
Description
Technical Field
The invention relates to a data transmission method, in particular to a data transmission method and a data transmission system for a railway production management system.
Background
The process of transferring data, also known as data communication, between a data source and a data sink. Data is a carrier of information. Data transmission is a form of information transmission, and mainly refers to information transmission related to a computer. In recent years, with the increasing severity of internet security, internet users and related industries place great importance on the security of data transmission and storage.
Data transmission communication is a communication mode and communication service for transmitting data information between two terminals by using a data transmission technology according to a certain communication protocol. It can realize the data information transfer between computer and computer, computer and terminal and between terminal and terminal, and is the third largest communication service after telegram and telephone service.
With the development of internet technology, resource sharing can be realized between any two terminal devices in the network through data transmission. In practical system applications, it is often necessary to transmit data from one terminal device to another network terminal device or even to another network terminal device when the application system is used. In the prior art, the method commonly used is that the equipment where the system application data source is located sends data to the target application equipment terminal, and the target terminal receives and analyzes the processed data and returns a processing state to the data source to feed back a processing result.
P2P (peer-to-peer) technology is a popular data transmission manner, and in P2P, each target device may receive data and provide the received data to other target devices, that is, each device may be a data source, and each device may also be a target device.
The effective transmission of the railway industry data not only provides necessary communication support for passengers in travel, but also bears the transmission tasks necessary for the normal operation of each software system in the railway industry. Along with the continuous improvement of the running speed of the railway trains in China and the application of various digital technologies, the data transmission of various production scheduling, office, centralized monitoring, comprehensive network management, operation card control and other systems related to the running speed is also an important factor for the safe and orderly running of the railway industry, and as such, the running and safe and effective transmission of the data of the railway production management system can ensure the intercommunication among data users.
At present, for historical reasons, various system application software exists in railway systems, such as a communication alarm system, an emergency treatment system, a device management system, an administrative network office system, a safety production command system and the like, basically, each electric service section has the systems, and the situation that data transmission sharing is inevitably needed between the systems exists in each system, so that each system has own data synchronization strategy. However, different systems belong to different factories respectively for compiling and maintaining, the use environment and language are not uniform, and a railway unit administrator cannot manage the efficiency, the network and the like for controlling the data transmission of each application system, so that an intuitive management method cannot be provided for the transmission state of each system in real time.
In order to solve the above problems, an ideal technical solution is always sought.
Disclosure of Invention
The invention aims at overcoming the defects of the prior art, and provides a data transmission method and a data transmission system for a railway production management system, which are used for solving the problem that a plurality of application systems are disordered and cannot efficiently manage data transmission.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: a data transmission method for a railway production management system, comprising the steps of:
step 1, establishing point-to-point message queues between each station section and a service part, and configuring queue priority for each message queue, wherein the queue priority is determined according to unit grade of a receiver;
step 2, when the message is required to be sent, the sender adds the data to be sent into a corresponding message queue;
and step 3, the receiver sequentially acquires the data to be transmitted from the corresponding message queues according to the sequence from the high priority to the low priority of the queues, and transmits the data to be transmitted to the corresponding application system for consumption.
Further, when sending the message, the sender configures data priority for each piece of data to be sent, and adds the data to be sent into a corresponding message queue according to the data priority; the data priority is determined according to the real-time property of the data to be sent;
the receiver acquires the data to be transmitted from the corresponding message queues in sequence according to the priority from high to low; where priority = a queue priority + b data priority, a is a queue priority weight, b is a data priority weight.
The invention also provides a data transmission system for the railway production management system, which comprises a plurality of message queues, wherein each message queue corresponds to one station section and the electric service part and is given with a queue priority, and the queue priority is determined according to the unit grade of a receiver;
the sending equipment adds the data to be sent into the corresponding message queue;
and the receiving equipment sequentially acquires the data to be transmitted from the corresponding message queues according to the sequence from the high priority to the low priority of the queues, and transmits the data to be transmitted to the corresponding application system for consumption.
The present invention has outstanding substantial features and significant advances over the prior art, and in particular,
1. in the invention, each sender and each receiver adopt a point-to-point message queue mode, and when the data to be sent is sent to a corresponding application system for consumption, the corresponding data to be sent in the message queue is deleted, so that the data is not lost, each message is only received by one receiver, and the message repetition is avoided;
2. the message queue is separated from the application system, and an asynchronous mode is adopted, so that the waiting time of each application system is reduced, and the efficiency is improved.
3. And determining to provide different queue priorities according to the unit grade of the receiver, and providing different data priorities according to the emergency degree of the service, thereby realizing the hierarchical transmission of the message to be sent.
4. Fault tolerance mechanisms are provided that can be addressed by modifying queue priority and data priority when data to be sent in a message queue is about to fail or when the available space in the message queue is insufficient.
Drawings
Fig. 1 is a schematic flow chart of embodiment 1 of the present invention.
Fig. 2 is a schematic flow chart of embodiment 2 of the present invention.
Detailed Description
The technical scheme of the invention is further described in detail through the following specific embodiments.
Example 1
As shown in fig. 1, the present embodiment provides a data transmission method for a railway production management system, including the steps of:
step 1, establishing point-to-point message queues between each station section and a service part, and configuring queue priority for each message queue, wherein the queue priority is determined according to unit grade of a receiver;
step 2, when the message is required to be sent, the sender adds the data to be sent into a corresponding message queue;
and step 3, the receiver sequentially acquires the data to be transmitted from the corresponding message queues according to the sequence from the high priority to the low priority of the queues, and transmits the data to be transmitted to the corresponding application system for consumption.
It can be understood that, after the data to be sent in the message queue is read, the data to be sent still remains in the message queue until receiving feedback that the data to be sent is successfully consumed, the message to be sent is deleted from the message queue, so as to ensure that the data cannot be lost.
Obviously, a point-to-point message queue is established between each station section and the electric service part, so that not only is the data prevented from being lost, but also each message is ensured to be received by one receiver, and the repetition of the message is avoided. In the transmission method, the message queue is separated from the application system, and the waiting time of each application system can be reduced and the efficiency can be increased by adopting an asynchronous mode.
Further, when receiving data to be sent and unsuccessfully consumed or receiving feedback of successful consumption in a timeout, the message queue judges whether the number of times of unsuccessfully consumed or the number of times of unsuccessfully consumed feedback in the timeout is larger than a preset threshold, if so, the message queue feeds back the message to a sender, and feeds back the unsuccessful consumption or the reason of timeout, and the sender decides whether to resend the data or delete the data according to the reason of feedback; and if the priority of the queue is not greater than the preset threshold, temporarily modifying the priority of the queue to be the highest so that the receiving party acquires the current data to be sent from the message queue again, and recovering the priority of the queue to be the initial state when receiving feedback that the data to be sent is successfully consumed.
Further, the priority order of each message queue can be adjusted, and of course, the ordering order can be set according to other rules in the same-level message queues.
It can be understood that when the point-to-point message queue is established, a pair of RSA keys of the message queue are also respectively generated, so that when the message is transmitted based on the message queue, the data can be encrypted and transmitted by adopting an RSA asymmetric encryption algorithm, and the safety of the data is ensured.
Further, in the implementation, a heartbeat mechanism is utilized between the message queue and both communication parties at both ends of the message queue to detect whether the current transmission channel is normal or not, so as to ensure the validity of connection.
Example 2
This embodiment differs from embodiment 1 in that: as shown in fig. 2, when sending a message, the sender further configures a data priority for each piece of data to be sent, and adds the data to be sent into a corresponding message queue according to the data priority; the data priority is determined according to the real-time property of the data to be sent;
the receiver acquires the data to be transmitted from the corresponding message queues in sequence according to the priority from high to low; where priority = a queue priority + b data priority, a is a queue priority weight, b is a data priority weight.
It can be understood that different queue priorities are provided according to the unit level determination of the receiver, and the queue priorities are high if the unit level is high; different data priorities are provided according to the emergency degree of the service, and the real-time performance of the service data is high, so that the data priority is high; by dividing different priorities, hierarchical transmission of the message to be sent can be achieved.
Example 3
This embodiment differs from embodiment 2 in that:
the message queue monitors the survival time of each piece of data to be sent in the current message queue in real time, if the difference value between the survival time and the preset time is in the preset range, the remaining available length of the data to be sent is detected in real time, and if the remaining available length is higher than the preset length threshold, the survival time of the data to be sent is reset; and if the remaining available length is lower than the preset length threshold, temporarily modifying the queue priority and the data priority to be highest so that the receiving party obtains the current data to be sent from the message queue, and recovering the queue priority to be the initial state when receiving the feedback that the data to be sent is successfully consumed.
It can be understood that, as long as the x-message-ttl parameter is set for the message queue, the survival time of all the data to be sent in the queue is set, and the time unit is millisecond, and the value must be greater than or equal to 0; by setting the survival time, it can be ensured that dead messages in the queue with time exceeding the set TTL time are not obtained by consumers, and dead data to be sent can be deleted as soon as possible.
Example 4
This embodiment differs from embodiment 2 in that:
when the sender adds the data to be sent into the message queue, the length of the data to be sent and the data priority order are sent to the message queue, the message queue detects the residual available length in real time, and if the residual available length is higher than the length of the data to be sent, the sender is informed to add the data to be sent into the message queue; if the remaining available length is lower than the length of the data to be sent, the survival time of each data to be sent in the current message queue is monitored in real time, if the difference value between the survival time and the preset time is in the preset range, the priority of the queue and the priority of the data are temporarily modified to be the highest, so that a receiver acquires the current data to be sent from the message queue, and when receiving the feedback that the data to be sent are successfully consumed, the priority of the queue is restored to be the initial state.
Example 5
The embodiment provides a data transmission system for a railway production management system, which comprises a plurality of message queues, wherein each message queue corresponds to a station section and a service part and is given a queue priority, and the queue priority is determined according to a unit grade of a receiver;
the sending equipment adds the data to be sent into the corresponding message queue;
and the receiving equipment sequentially acquires the data to be transmitted from the corresponding message queues according to the sequence from the high priority to the low priority of the queues, and transmits the data to be transmitted to the corresponding application system for consumption.
It can be understood that all transmission operations in the data transmission system have log records, and effective data analysis can be performed according to the log records, and analysis results can be intuitively displayed to a user in a graphic or chart mode.
Finally, it should be noted that the above-mentioned embodiments are only for illustrating the technical scheme of the present invention and are not limiting; while the invention has been described in detail with reference to the preferred embodiments, those skilled in the art will appreciate that: modifications may be made to the specific embodiments of the present invention or equivalents may be substituted for part of the technical features thereof; without departing from the spirit of the invention, it is intended to cover the scope of the invention as claimed.
Claims (10)
1. A data transmission method for a railway production management system, comprising the steps of:
step 1, establishing point-to-point message queues between each station section and a service part, and configuring queue priority for each message queue, wherein the queue priority is determined according to unit grade of a receiver;
step 2, when the message is required to be sent, the sender adds the data to be sent into a corresponding message queue;
and step 3, the receiver sequentially acquires the data to be transmitted from the corresponding message queues according to the sequence from the high priority to the low priority of the queues, and transmits the data to be transmitted to the corresponding application system for consumption.
2. The data transmission method for a railway production management system according to claim 1, wherein: after the data to be sent in the message queue is read, the data to be sent still remains in the message queue until the feedback that the data to be sent is successfully consumed is received, and the message to be sent is deleted from the message queue.
3. The data transmission method for a railway production management system according to claim 2, wherein: when receiving that the data to be sent is not successfully consumed or the successful consumption feedback is not received overtime, the message queue judges whether the number of times of unsuccessful consumption or the number of times of unsuccessful consumption feedback is larger than a preset threshold value, if so, the message queue feeds back the message to a sender, feeds back the unsuccessful consumption or the overtime reason, and the sender decides whether to resend the data or delete the data; and if the priority of the queue is not greater than the preset threshold, temporarily modifying the priority of the queue to be the highest so that the receiving party acquires the current data to be sent from the message queue again, and recovering the priority of the queue to be the initial state when receiving feedback that the data to be sent is successfully consumed.
4. The data transmission method for a railway production management system according to claim 1, wherein: when sending the message, the sender configures data priority for each piece of data to be sent, and adds the data to be sent into a corresponding message queue according to the data priority; the data priority is determined according to the real-time property of the data to be sent;
the receiver acquires the data to be transmitted from the corresponding message queues in sequence according to the priority from high to low; where priority = a queue priority + b data priority, a is a queue priority weight, b is a data priority weight.
5. The data transmission method for a railway production management system according to claim 4, wherein: the message queue monitors the survival time of each piece of data to be sent in the current message queue in real time, if the difference value between the survival time and the preset time is in the preset range, the remaining available length of the data to be sent is detected in real time, and if the remaining available length is higher than the preset length threshold, the survival time of the data to be sent is reset; and if the remaining available length is lower than the preset length threshold, temporarily modifying the queue priority and the data priority to be highest so that the receiving party obtains the current data to be sent from the message queue, and recovering the queue priority to be the initial state when receiving the feedback that the data to be sent is successfully consumed.
6. The data transmission method for a railway production management system according to claim 4, wherein: when the sender adds the data to be sent into the message queue, the length of the data to be sent and the data priority order are sent to the message queue, the message queue detects the residual available length in real time, and if the residual available length is higher than the length of the data to be sent, the sender is informed to add the data to be sent into the message queue; if the remaining available length is lower than the length of the data to be sent, the survival time of each data to be sent in the current message queue is monitored in real time, if the difference value between the survival time and the preset time is in the preset range, the priority of the queue and the priority of the data are temporarily modified to be the highest, so that a receiver acquires the current data to be sent from the message queue, and when receiving the feedback that the data to be sent are successfully consumed, the priority of the queue is restored to be the initial state.
7. A transmission system for railway production management system data, characterized by: comprising
A plurality of message queues, each message queue corresponding to a station section and a radio service section and being given a queue priority, the queue priority being determined according to a unit level of a receiver;
the sending equipment adds the data to be sent into the corresponding message queue;
and the receiving equipment sequentially acquires the data to be transmitted from the corresponding message queues according to the sequence from the high priority to the low priority of the queues, and transmits the data to be transmitted to the corresponding application system for consumption.
8. A transmission system for railway production management system data according to claim 7, wherein: when sending the message, the sender configures data priority for each piece of data to be sent, and adds the data to be sent into a corresponding message queue according to the data priority; the data priority is determined according to the real-time property of the data to be sent;
the receiver acquires the data to be transmitted from the corresponding message queues in sequence according to the priority from high to low; where priority = a queue priority + b data priority, a is a queue priority weight, b is a data priority weight.
9. A data transmission system for a railway production management system as claimed in claim 8, wherein: the message queue monitors the survival time of each piece of data to be sent in the current message queue in real time, if the difference value between the survival time and the preset time is in the preset range, the remaining available length of the data to be sent is detected in real time, and if the remaining available length is higher than the preset length threshold, the survival time of the data to be sent is reset; and if the remaining available length is lower than the preset length threshold, temporarily modifying the queue priority and the data priority to be highest so that the receiving party obtains the current data to be sent from the message queue, and recovering the queue priority to be the initial state when receiving the feedback that the data to be sent is successfully consumed.
10. A data transmission system for a railway production management system as claimed in claim 8, wherein: when the sender adds the data to be sent into the message queue, the length of the data to be sent and the data priority order are sent to the message queue, the message queue detects the residual available length in real time, and if the residual available length is higher than the length of the data to be sent, the sender is informed to add the data to be sent into the message queue; if the remaining available length is lower than the length of the data to be sent, the survival time of each data to be sent in the current message queue is monitored in real time, if the difference value between the survival time and the preset time is in the preset range, the priority of the queue and the priority of the data are temporarily modified to be the highest, so that a receiver acquires the current data to be sent from the message queue, and when receiving the feedback that the data to be sent are successfully consumed, the priority of the queue is restored to be the initial state.
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