Distributed traffic signal control system based on 5G

Abstract

The invention discloses a distributed road traffic signal control system based on 5G communication, and belongs to the field of road traffic signal control. The distributed road traffic signal controlsystem comprises an intersection control center, a distributed control signal lamp and a radar and video all-in-one machine; the radar and video all-in-one machine collects intersection traffic flowdata through a radar and a video sensor and sends the collected flow data to the intersection control center through a 5G communication network; the distributed control signal lamp collects the operation state of a signal unit through a voltage sensor and a current sensor, sends the state of the signal unit to the intersection control center through the 5G communication network, and receives and executes an operation scheme issued by the intersection control center; and the intersection control center analyzes and generates an intersection direction scheme according to the received intersection traffic flow data and signal lamp state information, sends an intersection release scheme to the radar and video all-in-one machine and the distributed control signal lamp through the 5G communication network, and completes a control node autonomous monitoring function. According to the distributed road traffic signal control system, the 5G communication technology is utilized, the functions ofan annunciator are preposed, the intersection wiring workload is reduced, and the system availability is improved.

Description

technical field [0001] The invention belongs to the field of road traffic signal control, specifically a 5G-based distributed traffic signal control system. Background technique [0002] Urban road traffic system is mainly composed of road network system, traffic flow and traffic monitoring and control system. With the continuous acceleration of urbanization and motorization in China, the flow of population to cities has caused a sudden increase in urban population, and the pressure on transportation continues to increase. How to accurately and efficiently monitor urban roads, obtain the traffic flow status of urban roads, judge and control them has become an important means to relieve urban traffic pressure. At the end of 2007, the investment in my country's intelligent transportation system was 24.7 billion yuan. In 2014, it reached 83.769 billion yuan, with a compound annual growth rate of about 19.06%. In 2017, it reached 141.381 billion yuan. Based on this growth rate,...

AI Technical Summary

Problems solved by technology

[0008] (1) The number of traffic information publishing equipment is huge, the maintenance cost is high, and there are many hidden dangers of failure

[0009] The traditional ITS system uses the road traffic signal controller to directly connect the traffic information release equipment to ensure the safe operation of the system. Such a large number of traffic information release equipment will greatly increase the maintenance cost of the system. Not only that, the information release equipment The increase of will increase the failure probability of the system

In addition, there are many types of traffic information release equipment, with different power and locations, resulting in slow fault location, which may cause urban road traffic congestion, seriously affecting the operating efficiency of the system and driving safety

[0010] (2) Long investment and construction time

[0011] Due to the complex structure of the traditional ITS system, especially the difficulties in construction and high maintenance costs caused by factors such as terrain and environment, it will waste a lot of time, manpower and material resources

In the bidding stage, it is necessary to organize multiple bidding work, which will waste a lot of time

In the construction phase, due to the construction of a complex control center system and the complicated debugging process between systems, it is necessary to coordinate multiple construction units and multiple construction times during the construction period

The construction time of the system is extended several times

[0012] (3) The system lacks scalability

[0013] As the ITS system has developed into a relatively closed professional control system, it has gradually been unable to meet the increasing business needs of traffic participants at this stage. At the same time, the rise of emerging technologies such as the Internet of Things, 5G, and cloud computing has also slowed down the progress of introducing the existing ITS system architecture. slow, expensive

[0014] At present, there is no train operation control system based on 5G and cloud computing technology put into use in the industry

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