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Real-time field bus controlling and dispatching method

A field bus control and scheduling method technology, applied in the direction of instrumentation, electrical digital data processing, etc., can solve problems such as starvation bandwidth utilization, low priority queue information congestion, etc., to improve bus throughput and bandwidth utilization, improve The effect of bandwidth utilization and delay reduction

Inactive Publication Date: 2014-05-28
SOUTHEAST UNIV
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  • Claims
  • Application Information

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Problems solved by technology

[0047] Purpose of the invention: The present invention discloses a real-time fieldbus control scheduling method, which mainly solves the phenomenon of low priority queue information congestion or even "starvation" and low bandwidth utilization in the traditional Token Ring-based fieldbus control scheduling algorithm question

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  • Real-time field bus controlling and dispatching method

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Embodiment Construction

[0083] Below in conjunction with specific embodiment, further illustrate the present invention, should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention, after having read the present invention, those skilled in the art will understand various equivalent forms of the present invention All modifications fall within the scope defined by the appended claims of the present application.

[0084] The field bus control scheduling parameter used in the embodiment is as follows:

[0085] ●The master device holds the token time: T TH ;

[0086] ●Idle time of master device: T I ;

[0087] T I Is the polling queue time interval when the master device is idle, that is, when the high and low priority queues are empty, T I The smaller the value, the more frequently polled.

[0088] ●Number of tasks in the high priority task queue: H n ;

[0089] ●Processing time of any high-priority ...

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Abstract

The invention discloses a real-time field bus controlling and dispatching method. The real-time field bus controlling and dispatching method comprises the steps of (1) providing a processing chance for information of a low priority queue through a method for setting a minimum processing threshold of the low priority queue aiming at the problem that a task of the low priority queue cannot be processed for a long time due to higher load and longer duration time of a high priority queue on the premise that prior sending of information of the high priority queue is ensured; (2) relieving the congestion of the high priority queue through a method for enlarging a token period step by step by combining a load condition of the high priority queue aiming at a congestion problem of the high priority queue, and indirectly relieving the congestion of the low priority queue at the same time; (3) increasing the bandwidth utilization rate of the token period through a method for reducing the token period step by step aiming at the problem that the time of the token period is wasted when the load of the low priority queue is lower.

Description

technical field [0001] The invention relates to a real-time field bus control scheduling method, which belongs to the technical field of automation control. Background technique [0002] 1.1 For the convenience of readers to understand the technical background of the present invention [0003] With the rapid development of mobile communication services, the number of mobile communication base stations and computer room equipment has also increased significantly, and the contradiction between weak base station operation and maintenance capabilities and heavy operation and maintenance workload has become increasingly prominent. Therefore, the response of the base station monitoring system to base station emergencies Speed ​​and processing power also put forward higher requirements. [0004] At present, the base station monitoring system mainly uses the field bus technology, and the field bus has the requirements of real-time, reliability and predictability in practical applic...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F13/40
Inventor 徐平平秦汉李小娟
Owner SOUTHEAST UNIV