Network-based vehicle track obtaining method and system
A vehicle trajectory and trajectory technology, which is applied in the field of network-based vehicle trajectory acquisition, can solve the problems of timing clock deviation, IP camera time deviation, and reduce the accuracy of IP camera timing clock, so as to achieve high reliability and high accuracy. Effect
Inactive Publication Date: 2016-10-05
KYLAND TECH CO LTD
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Problems solved by technology
However, the external ambient temperature or the heat generated by the IP camera itself will cause the temperature of the crystal to change. When the temperature changes, the vibration frequency of the crystal will change. In this way, the clock timing by recording the vibration times of the crystal will appear. Deviation, which leads to the deviation of the overall timing clock, which reduces the accuracy of the IP camera timing clock, resulting in a large time deviation even for IP cameras with adjacent or similar geographical locations, even reaching 2 hours a day. According to this time, it cannot Get accurate vehicle trajectories
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[0041] In order to accurately acquire vehicle trajectories, an embodiment of the present invention provides a method and system for acquiring vehicle trajectories based on a network.
[0042] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.
[0043]The network-based vehicle trajectory acquisition method provided by the embodiment of the present invention is applied to an intelligent transportation system. The system includes the main control center, control nodes and monitoring nodes. Wh...
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The invention provides a network-based vehicle track obtaining method and system. The method is applied to an intelligent traffic system including a main control center, a control node, and a monitoring node; and the intelligent traffic system supports a network time protocol. The method comprises: the monitoring node transmits a monitored video stream to the control node in real time, so that the control node extracts vehicle information from the video stream; the control node adds a time label and a monitoring node identifier into the vehicle information and transmits the time label and the monitoring node identifier to the main control center by a communication link; and when the main control center receivers a vehicle track obtaining request carrying target vehicle information, a target vehicle track is determined based on the target vehicle information. According to the invention, the monitoring node transmits the video stream to the control node in real time; the control node extracts the vehicle information, adds the time identifier and the monitoring node identifier, and transmits the time identifier and the monitoring node identifier to the main control center; and the main control center can determine the vehicle track accurately based on the time. Therefore, the reliability is high.
Description
technical field [0001] The invention relates to the technical field of intelligent transportation, in particular to a method and system for acquiring vehicle tracks based on a network. Background technique [0002] Urban traffic is closely related to urban development and people's daily life. With the development of social economy and the improvement of people's quality of life, the number of urban motor vehicles has increased rapidly, and traffic congestion has become a major problem in major cities across the country. However, the pace of municipal road construction lags far behind the growth of traffic flow. Serious traffic jams appear during peak hours such as commuting and commuting, which not only hinders people's daily life, but also seriously hinders urban social and economic activities. The development of urban road traffic management is facing severe challenges. [0003] ITS (Intelligent Transport System, Intelligent Transportation System) has become a feasible wa...
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IPC IPC(8): G08G1/123
Inventor 李平张洪雁
Owner KYLAND TECH CO LTD