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Synchronous decision-making method and system for emergency resource transportation path and traffic control measures
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A technology for traffic control and emergency resources, applied in the field of emergency management, it can solve the problem of inability to decide the best transportation route, and achieve the effect of reducing casualties, optimizing transportation routes, and reducing other losses.
Active Publication Date: 2021-09-21
HARBIN INST OF TECH
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[0004]The purpose of this invention is to solve the problem that the best delivery route cannot be determined by using the existing method, and propose a simultaneous decision-making of emergency resource delivery route and traffic control measures method and system
Method used
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specific Embodiment approach 1
[0017] Specific implementation mode 1. Combination figure 1 This embodiment will be described. A method for synchronous decision-making of emergency resource delivery routes and traffic control measures described in this embodiment, the method specifically includes the following steps:
[0018] Step 1. Determine the primary route for emergency resource delivery;
[0019] Step 11. Abstract the traffic road network into a graph G(V, E), where V represents the set of all nodes in the road network, E represents the set of each road section connecting the nodes, (i, j)∈E, i, j is a node in the road network, (i, j) is the road section connecting node i, j;
[0020] Step 12. In graph G(V, E), obtain the shortest path solution between the initial material supply node and the required material node by establishing a model, and use the obtained shortest path solution as the primary path, and use the primary path The selected route is recorded as Route_initial;
[0021] Step 2. Calcu...
specific Embodiment approach 2
[0026] Embodiment 2: The difference between this embodiment and Embodiment 1 is that in the first and second steps, the shortest path solution between the starting material supply node and the required material node is obtained, and the specific process is as follows:
[0027]
[0028]
[0029]
[0030]
[0031]
[0032]
[0033]
[0034]
[0035] Among them: T represents the total time that the rescue vehicle travels between the starting material supply node and the required material node;
[0036] x (i,j) Indicates the traffic flow of road section (i, j) under traffic control;
[0037] R rs Indicates the set of vehicle travel paths between OD and rs;
[0038] O represents the initial supply node set of materials;
[0039] D represents the node set of required materials;
[0040] r represents a material starting supply node, and r∈O;
[0041] s represents a node of a required material, and s∈D;
[0042] (i,j)∈R rs Indicates that the road segment...
specific Embodiment approach 3
[0052] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is that the transit time function is:
[0053]
[0054] Among them, t (i,j) (x (i,j) ) represents the passing time function of road section (i, j) under traffic control;
[0055] t (i,j) (0) represents the free passage time on the road section (i,j);
[0056] α and β are regression coefficients;
[0057] C (i,j) Indicates the traffic capacity of road segment (i, j).
[0058] Other steps and parameters are the same as those in Embodiment 1 or Embodiment 2.
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Abstract
The invention discloses a synchronous decision-making method and system for an emergency resource transportation path and traffic control measures, and belongs to the technical field of emergency management. According to the invention, the problem that the optimal conveying route cannot be decided by the existing method is solved. According to the invention, the most basic mathematical model of the shortest emergency material transportation path is obtained according to the Beckmann traffic flowdistribution model of the wardrop balance criterion and the BRP function, meanwhile, the node importance index is introduced to serve as the basis for judging whether control measures need to be taken or not, and if necessary, a proper control mode is selected for a specific node to dredge other vehicles. Therefore, a vehicle for transporting goods and materials is ensured to run smoothly and arrive at an accident place in time, and casualties and other losses are reduced. And the selection of the control measures is introduced into the mathematical model, so that the error generated when the path is calculated by the original model is reduced to a certain extent, and a better transportation path can be conveniently obtained. The invention can be applied to emergency resource transport path decision.
Description
technical field [0001] The invention belongs to the technical field of emergency management, and in particular relates to a method and system for synchronous decision-making of emergency resource delivery routes and traffic control measures. Background technique [0002] When natural disasters, accidents, public health incidents, social security incidents and other emergencies occur, the rapid delivery of emergency resources is the key to effective emergency response, rescue and situation control. Therefore, the selection of emergency resource delivery routes is particularly important. The location distribution of emergency resources, real-time road conditions, and interference from emergencies all have a dynamic and non-negligible impact on the selection of transportation routes. At present, when selecting an emergency route, factors such as real-time road conditions and route reliability are often considered, and the optimization goal is the shortest time or the best relia...
Claims
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