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Method and system for distributed redundancy control on intelligent traffic network

  • US 10,169,990 B2
  • Filed: 02/15/2016
  • Issued: 01/01/2019
  • Est. Priority Date: 02/15/2015
  • Status: Active Grant
First Claim
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1. A method for distributed redundancy control on an intelligent traffic network comprising an intelligent traffic control center and a plurality of communication control nodes constituting a redundant network, wherein the method comprises:

  • for each of the communication control nodes, sending, by a communication control node, messages for electing a primary device to the other communication control nodes than the communication control node among the plurality of communication control nodes, and electing a primary device from the plurality of communication control nodes according to preset priorities of the communication control nodes, and backing up data of the communication control node in the primary device; and

    sending, by the primary device, state detection messages to the other communication control nodes than the primary device among the plurality of communication control nodes, and for each of the other communication control nodes than the primary device among the plurality of communication control nodes, when a response message sent by the communication control node to respond to the state detection message indicates that the communication control node can-not control any action of a device served by the communication control node, then controlling the action of the device served by the communication control node, and adjusting, by the primary device, control intervals of time of signaling lamps at junctions corresponding to the respective communication control nodes in the redundant network according to traffic flows at the junctions; and

    when the response message is a message for electing a primary device, then instructing the communication control node to control again the action of the device served by the communication control node, and further backing up the data of the communication control node in the primary device;

    the data of the communication control node comprises instruction control data of devices served by the communication control node;

    the action of the device served by the communication control node is a control for a signaling lamp.

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