Traffic flow density identifying device based on infrared thermal imaging

Abstract

The invention relates to a traffic flow density identifying device based on infrared thermal imaging. The traffic flow density identifying device comprises an infrared thermal imager, an analyzing module, a network connecting module, a signal control module and an urban center control system which are arranged at each intersection and face to the vehicle coming direction; the traffic flow density identifying device is characterized in that the infrared thermal imager arranged at each intersection and facing to the vehicle coming direction is used for supplying a thermal imaging picture at the intersection; the analyzing module is used for identifying a vehicle engine and generating a traffic flow density data according to the thermal imaging picture; the network connecting module is connected with the urban center control system and is used for sending the traffic flow density data to the urban center control system; the urban center control system is used for sending a control instruction to the signal control module through the network connecting module; the signal control module is used for directly controlling the state of the traffic light. The traffic flow density identifying device according to the scheme can be used for effectively helping the urban traffic management system to increase the passing rate of road vehicle.

Description

technical field [0001] The invention belongs to the field of urban traffic control. Background technique [0002] With the development of social economy, there are more and more cars in the city, and people use more and more cars to travel, which brings more and more pressure to the traffic control of urban roads. [0003] The traffic control system currently in contact with ordinary people is the "traffic light" system in ordinary life. Its essence is to set a good time interval and alternately release vehicles in different directions. This control method is relatively rigid, and people often see many cars stopping in one direction and waiting to be released, while there are no cars going in the other direction but taking up the green light time. [0004] In order to improve the efficiency of traffic operation, many theories have been put forward and a lot of efforts have been made. The more representative one is the "green wave belt" control method, which controls the tr...

AI Technical Summary

Problems solved by technology

However, the problem of this scheme is that the construction volume is extremely huge, the cost performance is low, and the implementability is poor.

Patent 200610149088.9, the method of detecting traffic flow with infrared matrix and the traffic monitoring system, adopts the system that actively emits infrared rays and receives the reflected infrared rays of automobiles, which can detect the direction and speed of automobiles, but it is only applicable to the situation of determining the entrance of the exit, only For garage, bridge type environments, not suitable for urban roads

Patent No. 201210298123.9, a method and system for detecting traffic flow and speed. This patent must install two infrared sensors on each lane, and only has a simple counting function, which cannot completely judge the congestion situation at the intersection, especially when the vehicle is stagnant. basically meaningless

Patent No. 201010233054.4, a high-level infrared traffic management system, adopts an active infrared transmitting and receiving system, and its signal processing uses a single-chip microcomputer for simple counting, which obviously lacks practicability for traffic conditions at complex intersections

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