Intelligent inspection method based on expressway monitoring
A highway and intelligent inspection technology, which is applied to the traffic control system of road vehicles, traffic flow detection, closed-circuit television system, etc. Work load and other issues, to reduce manual monitoring time and location blind spots, improve accuracy and timeliness, and avoid information service delays
Active Publication Date: 2022-04-12
JINLING INST OF TECH
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[0003] At present, external monitoring equipment is generally installed on domestic expressways, but the initiative and intelligence of real-time detection of road traffic status are not high. The inspection is realized by the monitors staring at the monitoring screen, which increases the workload of the monitors, causes visual fatigue, and greatly reduces the accident detection rate. Moreover, the existing automatic inspection system has a fixed inspection time and lacks flexibility. The efficiency is not high; the push of road control information such as road closure and diversion is carried out through the experience of the monitors, and it takes a lot of time to confirm the accident information and the entry and release of information, resulting in delays in information services
If the accident or traffic jam cannot be detected and dealt with in time, it will cause the vehicle to detour or even cause a secondary accident, which will reduce the operating efficiency of the expressway and bring huge economic losses to the expressway operating company
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[0046] In a road section under the jurisdiction of a surveillance camera on a certain expressway, one of the time periods is divided into 06:50-09:15 through statistical analysis of historical events, and the accident experience coefficient is 0.7 after normalizing the number of all events. Obtain the current OD traffic volume to analyze the traffic capacity and normalize it to obtain a real-time traffic flow coefficient of 0.5. According to manual experience, the accident experience coefficient of this road section is judged to be 0.8, and the comprehensive coefficient Q=1 / (Q 1 +Q 2 +Q 3 ) = 0.64. The default inspection time of the camera is 10 minutes, and the actual inspection time in the current time period is 10*0.64≈6 minutes. The length of the road under the jurisdiction of the camera is 1km, and the starting point of the first preset point is calculated from the furthest forward direction. The maximum distance visible for monitoring is |S 1 |=0.2km, calculate the cu...
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The invention discloses an intelligent routing inspection method based on expressway monitoring, and belongs to the technical field of traffic monitoring and intelligent traffic. The intelligent routing inspection method comprises the following steps: controlling a default routing inspection period of a camera of a key road section according to traffic flow conditions of an accident-prone road section and different time periods; by automatically adjusting the position of a monitoring preset point and the polling staying time and combining a manual polling method and a machine automatic polling method, accident-prone road sections are counted, and automatic polling is started under the condition that the current focus point of a camera is not in the interval range of a default staying preset point or a certain other preset point is not operated for a long time. The time blind area and the space blind area of manual monitoring are reduced, the lagging property of finding abnormal traffic conditions is reduced, and traffic jam and accidents caused by information service delay are avoided, so that the safety and smoothness of highway traffic are ensured.
Description
technical field [0001] The invention belongs to the technical field of traffic monitoring and intelligent transportation, and in particular relates to an intelligent inspection method based on expressway monitoring. Background technique [0002] As the main symbol of modern traffic, expressway has developed rapidly in our country in recent years. At present, the mileage of highways in my country has reached 35,000 kilometers. The rapid development of highways has brought huge economic and social benefits to the society, and greatly shortened the space-time distance between people. But at the same time, it also poses a severe challenge to expressway traffic management agencies and traffic participants. Therefore, how to use intelligent inspection methods to detect abnormal conditions in time, avoid traffic jams and further impacts, and ensure the smooth operation of expressways has gradually become an important issue in the process of expressway inspections in our country. ...
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IPC IPC(8): G08G1/01G08G1/065H04N7/18
Inventor 颜新云顾晓燕王池社
Owner JINLING INST OF TECH