Road congestion event detection method and early warning system
A technology of event detection and road, which is applied in the traffic control system of road vehicles, traffic flow detection, traffic control system, etc., can solve the problem of road congestion. It stays at the theoretical level and cannot be well adapted to the detection of congestion events by road managers. requirements and other issues
Active Publication Date: 2015-11-25
JIANGSU SUKE CHANGLIAN TECHNOLOGY CO LTD
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Problems solved by technology
[0004] At present, the research on many road congestion events at home and abroad stays at the theoretical level, which deviates from the actual application requirements, and cannot well meet the requirements of road managers for the detection of congestion events.
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[0081] A highway traffic jam early warning method, comprising the following steps:
[0082] Judgment module 1: Step 1. Obtain pulse signals generated by two geomagnetic sensors buried at a certain interval 1 before and after a certain lane of the expressway section when the vehicle passes by;
[0083] Step 2. Based on the time t of the magnetic field change pulse signal when the vehicle enters / leaves the first sensor obtained in step 1 a / t b And enter / leave the second sensor to generate pulse signal time t c / t d ;
[0084] Step 3. Based on steps 1 and 2, calculate the time difference between each vehicle passing the two sensors as speed v i = l i / Δt i and the time taken by the vehicle to pass the sensor (the trigger time difference between vehicle i entering and leaving the sensor);
[0085] Step 4. Calculate the unit time T according to the number n of electric pulses generated by the magnetic field within the preset time period (the number of vehicles passing t...
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The invention discloses a road congestion event detection and early warning system which is capable of rapidly realizing judgment and early warning of road congestion and gives an alarm the first time. The invention further provides a road congestion event detection method. When a car goes by, the congestion condition of a section area is determined by obtaining signals generated by two induction devices which are buried at an interval in front and at the back of a road section; and by adopting the method, the detection efficiency of a congestion event is improved so as to obtain a more rapid and accurate detection result. The system and the method have the advantages that 1) the totally-new road congestion event early warning method is created; 2) early warning is performed uninterruptedly, and the timeliness and the continuity of early warning are improved; and 3) the detection precision is improved, and the discovering time of the congestion event is earlier.
Description
technical field [0001] The invention relates to a detection method used in road congestion and a system for early warning of vehicle congestion using the detection method. Background technique [0002] After the completion of the highway, with the continuous increase of traffic flow, traffic jams often occur, and there is a hidden danger of causing a series of traffic accidents. With the explosive growth of the number of vehicles in recent years, traffic congestion has brought enormous pressure to road managers. [0003] At present, there is a single method for detecting road congestion events at home and abroad, and the early warning is weak. The single method often has problems that cannot be detected in special cases, resulting in untimely early warning. Therefore, how to use reasonable means to detect and warn road congestion events has very important research significance and practical application value. [0004] At present, the research on many road congestion events...
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Login to View More IPC IPC(8): G08G1/01G08G1/04G08G1/042
Inventor 糜长军沈洪华吴宇杰陶京高永安
Owner JIANGSU SUKE CHANGLIAN TECHNOLOGY CO LTD