Distributed redundancy control method and system for intelligent transportation

Abstract

The invention provides a distributed redundancy control method and system for intelligent transportation. Communication control nodes form a redundant network; a communication control nodes select a main device based on priority levels of the communication control nodes and back up the data of the nodes into the main device; the main device sends a fault detection message to one communication control node; when a response message for a state detection message represents that the communication control node can not control the action of a device under the control of the communication control node, the main device replaces the communication control node to control the action of the device under the control of the communication control node and adjusts control time of all traffic lights at all intersections according to traffic flows at all intersections in the redundant network; and when the response message for the state detection message is a main device election message, the communication control node sending the response message being the main device election message controls the action of a device under the control of the communication control node again and backs up the data into the main device continuously, and the adjacent communication control node transmits the backup data at an uplink. Therefore, distributed redundancy control of intelligent transportation is realized.

Description

technical field [0001] The invention relates to the technical field of intelligent transportation, in particular to a distributed redundant control method and system for intelligent transportation. Background technique [0002] In the intelligent transportation network, post-digital network data such as GPS positioning, bus dispatching, and monitoring play an increasingly important role in real life. Now many cities have established 3G monitoring, GPS traffic dispatching, ITS and other systems. How to realize Network management is an important issue to be solved in the next step. [0003] Take signal indicator light control as an example, such as figure 1 Shown is the structure diagram of the existing intelligent transportation network. The existing intelligent transportation network basically includes the station-level (city-level) control center, the intersection switch and the signal indicator control device. When the intersection video camera monitors the traffic flow i...

AI Technical Summary

Problems solved by technology

[0003] Take signal indicator light control as an example, such as figure 1 Shown is the structure diagram of the existing intelligent transportation network. The existing intelligent transportation network basically includes the station-level (city-level) control center, the intersection switch and the signal indicator control device. When the intersection video camera monitors the traffic flow in a certain direction When it increases, the traffic police are usually notified to manually adjust the signal indicator light on the spot to guide the traffic manually; now, it is also possible to manually adjust the signal indicator light remotely through the station-level control center, which greatly improves the real-time rate of traffic control. Great improvement, but due to the increasing demand for transmission between the station-level control center and the intersection switch, in the event of a failure of the signal indicator control device, the signal control communication between the station-level control center and the on-site signal indicator control device is abnormal. There is no guarantee that the situation will not occur. This realistic problem is the problem of redundant management of intelligent transportation.

[0004] In addition, when the communication between the station-level (city-level) control center and the intersection switch is not smooth, the data transmission cannot be completed in a timely and effective manner. How to immediately and effectively transmit the backup data to the station-level (city-level) control center must also solve the redundancy management question

[0005] In addition, the existing means of adjusting the time of signal indicators is mainly through manual control. For the convenience of control, the relevant control equipment is generally placed at the corner of the intersection, and passers-by can also open the relevant control equipment for operation, which greatly brings safety hazards. , of course, this is not something that can be solved simply by locking the relevant control equipment

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