A single-controller master-slave network bus controller online switching method

A bus controller, single-controller technology, applied in the bus network, data exchange network, data exchange through path configuration, etc., can solve the problems of unsuccessful switching, failure to avoid bus silence, and inability to diagnose system fault status. The effect of increasing stability and reliability, improving availability, and reducing the probability of failure

Active Publication Date: 2019-08-09
BEIJING AEROSPACE AUTOMATIC CONTROL RES INST +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

And this process is usually not fault-tolerant, such as communication, controller site attribute switching process, etc. may cause unsuccessful switching
When switching fails, it usually results in no controller on the bus, and the bus is silent. In this case, because there is no information transmission on the bus, the designer cannot further diagnose the fault state of the system.
A further solution is to increase the reliability of communication through backup transmission, but this solution cannot solve the situation of site switching failure, so it does not avoid the problem of bus silence

Method used

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  • A single-controller master-slave network bus controller online switching method
  • A single-controller master-slave network bus controller online switching method
  • A single-controller master-slave network bus controller online switching method

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Embodiment Construction

[0028] Hereinafter, the present invention will be described in detail by taking the MILSTD1553B bus system as an example in conjunction with the accompanying drawings and specific implementation methods.

[0029] The MILSTD1553B data bus has bidirectional output characteristics, high real-time performance and reliability, and is widely used in contemporary transport aircraft, a considerable number of civil aviation airliners and military aircraft, and is also widely used in aerospace systems. 1553B bus system is mainly composed of 3 parts: bus controller BC; remote terminal RT; bus monitor BM. The operating frequency of the 1553B bus is 1Mb / s. Using Manchester II code, half-duplex work. The main hardware part is bus controller (BC) and remote terminal (RT), and bus monitor (BM) is an optional device. Generally, these 3 parts are completed through a multi-channel bus interface (MBI). The MBI can be embedded in the computer. The bus has 10 message formats. Each message cont...

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Abstract

The invention discloses an online switching method of a master-slave network bus controller of a single controller. The method comprises the following steps: a current bus controller Ctrlorcurrent sends a controller switching request message to a slave station Ctrlorcandidate; the Ctrlorcandidate replies a controller switching request response message to the Ctrlorcurrent, and switches itself to the bus controller after waiting for tdelay 1; the Ctrlorcurrent switches itself to the slave station after receiving the switching request response message; the Ctrlorcandidate sends switching completion message to the Ctrlorcurrent that has switched to the slave station, reads a reply message of the Ctrlorcurrent after waiting for tdelay 2, if a reply mark is effective, the switch is success, and otherwise, the Ctrlorcandidate switches itself to the slave station again; the Ctrlorcurrent receives the switching completion message of the bus controller sent by the Ctrlorcandidate within a Tswtich time, resets the reply mark and waits for the extraction of the bus controller, and if the Ctrlorcurrent does not receives the switching completion message, the Ctrlorcurrent switches itself to the bus controller again, 1 is added to the switching times, and the switching process is repeated; and a bus fault is alarmed in the case of failure after repeating for N times, and the switching process is ended. The online switching method is simple, feasible, stable and reliable.

Description

technical field [0001] The invention relates to an online switching method of a single-controller master-slave network bus controller, which can be used to solve the problem of bus dynamic switching during operation of a distributed system adopting a master-slave bus architecture. Background technique [0002] With the development and popularization of module design and distributed technology, the method of using bus to build system solutions has become more and more common. Large-scale industrial equipment control systems, multi-point deployment intelligent monitoring systems, and aerospace fields will be used. bus. Bus technology can be divided into star bus, daisy chain bus, and ring bus according to the topology. According to the distribution of bus control rights, it can be divided into master-slave bus, arbitration bus, peer-to-peer bus, etc. Among them, the master-slave bus is widely used in systems with high stability requirements. [0003] In a system with a maste...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/40H04L12/24
CPCH04L12/40202H04L41/0663
Inventor 高飞崔宇刘思东叶绍凯仲宇邱枫张磊隋强强李慧
Owner BEIJING AEROSPACE AUTOMATIC CONTROL RES INST
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