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Train AEB system control decision method
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A technology for controlling decision-making and trains. It is applied to the control system of the transportation center, locomotives, and railway car body parts, etc. It can solve the problems of high noise, no automatic emergency braking system, and large driver interference.
Inactive Publication Date: 2020-01-10
陕西九域通创轨道系统技术有限责任公司
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Problems solved by technology
[0003] At present, domestic train braking is mainly divided into two methods: "common braking" and "emergency braking", but these two braking methods are dominated by the driver, and the safety is greatly affected by human factors; During subway construction, tunnel construction and other underground projects, trains are commonly used to transport construction tools, materials and workers in the construction tunnels. These trains generally do not have automatic emergency braking systems. In addition, the underground construction environment is dark and noisy, and the drivers are affected. Large interference, may collide with trains coming in the opposite direction, trains driving ahead, or even pedestrians on the track, causing serious accidents
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Embodiment 1
[0051]Based on the camera and radar, the train track driving environment is depicted, obstacles and dangerous signals are identified through image processing and radarsignalprocessing, and train information of the opposite train and the preceding train and track pedestrian information are obtained. The information of the opposite train includes the speed of the opposite train and the distance between the opposite train and the train; the information of the preceding train includes the speed of the preceding train and the distance between the preceding train and the train; distance.
[0052] S2. According to the obtained oncoming train information, preceding train information and track pedestrian information, calculate the time required for the train to collide with the opposite train, the preceding train and track pedestrians through the system management and control center;
[0053] According to the speed of the train and the information of the opposite train, calculate the...
Embodiment 2
[0063] The system management and control center adopts industrial computer, and the industrial computer is connected with the camera and radar through the Ethernet port. In this embodiment, the safety distance d is calculated by the industrial computer br .
[0064] S3. The system management and control center decides according to the time calculated above, whether to issue an early warning, and whether to force the train to start its automatic emergency braking system;
Embodiment 3
[0066] The automatic emergency braking system adopts different safety distances and braking methods according to different collision scenarios, including the following three scenarios:
[0067] (1), in the scene A where the train may collide with the opposite train, the inter-vehicle distance that needs to be maintained after the train stops is relatively large, take d 0 The initial value is 6.5m, the maximum braking deceleration of the opposite train and the train in question is only related to the wheel-rail adhesion coefficient, take a 2 = k·a 1 , k is the obstacle braking deceleration correction coefficient, if the two wheel rails are made of the same material, then k=1.
[0068] at this time
[0069] (2), in the scenario B where the train may collide with the vehicle in front, take d 0 The initial value is 5.5m, also take a 2 = k·a 1 ,at this time
[0070]
[0071] (3), under the scenario C where the train may collide with pedestrians on the track, take d 0 Th...
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Abstract
The invention relates to a train AEB system control decision method. The method comprises the following steps that S1, opposing train information, front train information and track pedestrian information are obtained; S2, the time required for collision of the train with an opposing train, a front train and a rail pedestrian is calculated through a system management control center according to theobtained opposite train information, the front train information and the track pedestrian information; and S3, the system management control center determines whether to issue an early warning or notaccording to the calculated time, and whether the train is forced to start an automatic emergency braking system or not. According to method and the system, the risk that the train collides with theopposing train, the front train and the pedestrians on the track due to the factors that the visibility is low, the noise is large and the like when the train is running, especially under the tunnel working condition can be avoided.
Description
technical field [0001] The invention relates to the field of train operation and automatic emergency braking technology, and in particular to a control decision-making method for an anti-collision system for an opposing train, a vehicle in front, and pedestrians on a track, which is used for trains in tunnel conditions. Background technique [0002] The Automatic Emergency Braking (AEB) system is originally an active safety technology used in automobiles to avoid or mitigate collisions through automatic emergency braking, and belongs to the category of Advanced Driver Assistance System (ADAS). AEB uses sensors such as millimeter-wave radar, lidar, and monocular / binocular cameras to detect surrounding target information, and calculates the time and degree of danger of an impending collision in real time based on these target information (such as target vehicle speed, relative distance, etc.). And intervene in the braking process in time to ensure the safety of the car. [00...
Claims
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Application Information
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