Method for splitting ambiguous path tolls for highways based on license plate recognition

A technology for license plate recognition and expressway, applied in instruments, ticketing equipment, etc., can solve the problems of inaccurate split results of tolls, large weather effects, and large differences in proportional relations, etc., to promote benign operation, improve maintenance, The effect of improving adaptability

Inactive Publication Date: 2011-05-18
天津高速公路集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Yet adopt above-mentioned method to have following defect: (1) the recognition rate of license plate and the matching rate of vehicle are affected greatly by weather, in the weather with lower visibility such as rain, fog and night, the captured image of license plate recognition equipment is not clear, affects the license plate Identification and vehicle matching, the proportional relationship of the matching rate of each model vehicle on the identified path is quite different from the actual proportional relationship of each model on the two paths, and the reliability of splitting is low; (2) affected by the status of the equipment Large, when the equipment maintenance cannot keep up or equipment failure occurs, the license plate recognition equipment cannot accurately obtain the license plate information, and the proportional relationship of the matching rate of each type of vehicle that has identified the path cannot objectively reflect the proportional relationship of each type of vehicle on the ambiguous path. Even failure; (3) this method can not adapt to the weather and equipment running status and matching state adjustment split method but directly splits the vehicle tolls of the unidentified path according to the proportional relationship of the matching rate of each type of vehicle that has identified the path. points, does not conform to the objective reality
(4) According to the practice of vehicle traffic, under normal circumstances, the matching rate of each route and the proportional relationship of each type of vehicle are stable within a certain range of values, but the existing methods do not refer to the historical information of these data to adjust the splitting method to adapt to poor ability
[0004] In short, splitting the tolls of vehicles with unidentified paths completely copying the proportion of vehicles with identified paths cannot objectively reflect the actual traffic conditions of ambiguous paths, and the split results of tolls are not accurate and fair

Method used

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  • Method for splitting ambiguous path tolls for highways based on license plate recognition
  • Method for splitting ambiguous path tolls for highways based on license plate recognition
  • Method for splitting ambiguous path tolls for highways based on license plate recognition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] A toll splitting method for expressway ambiguity paths based on license plate recognition is applied to the above-mentioned toll splitting system for expressway ambiguity paths based on license plate recognition, and is characterized by including the following steps:

[0066] 1) Initialize the system and set the reference value: including the satisfactory value of the total matching rate, the bottom limit of the gantry matching rate and the reasonable value of the sample distance of the gantry, the satisfactory value of the total matching rate is 0.5-0.7, the bottom of the gantry matching rate The limit is 70%-90% of the historical average of the gantry matching rate; the reasonable value of the sample distance is 0.01-0.04; in this example, the satisfactory value of the total matching rate is set to 0.6, and the lower limit of the gantry matching rate is the gantry 85% of the historical average of the matching rate, the reasonable value of the sample distance of door frame...

Embodiment 2

[0073] Steps 1-3 are the same as in Example 1, and in step 3 C i , C, l i The value is shown in Example 2 in Table 1;

[0074] 4) Store the license plate identification information of unmatched vehicles and perform statistics and judgments based on the above-mentioned reference value set by the system initialization and the license plate identification information of matched vehicles. According to the matching status, determine the split method of unmatched vehicle tolls:

[0075] 4.2) The total matching rate of 0.4824 is less than the satisfactory value of 0.6 of the total matching rate, then it is further judged whether the matching rates of the masts 1 and 2 are respectively greater than the lower limit of the matching rate of the respective masts:

[0076] 4.2.1) The match rate of mast 1 is 0.0806 greater than the lower limit of the mast match rate 0.0895×85%=0.761, and the match rate of mast 2 is 0.4018 greater than the lower limit of the mast match rate 0.4465×85%=0.3795, and ...

Embodiment 3

[0080] One day, the mast 1 failed and the passing vehicle could not be identified. The matching rate of the mast 1 was 0, and the matching data of the mast 2 is shown in Example 3 in Table 2.

[0081] Steps 1-3 are the same as in embodiment 1, in step 3 Q j , Q, C i , C, l i The value of is shown in Table 2 Example 3;

[0082] 4) Store the license plate identification information of unmatched vehicles and perform statistics and judgments based on the above-mentioned reference value set by the system initialization and the license plate identification information of matched vehicles. According to the matching status, determine the split method of unmatched vehicle tolls:

[0083] 4.2) The total matching rate of 0.4329 is less than the satisfactory value of 0.6 of the total matching rate. It is further judged whether the matching rates of the masts 1 and 2 are respectively greater than the lower limit of the matching rate of the respective masts:

[0084] 4.2.1) The door frame matchin...

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Abstract

The invention relates to a method for splitting ambiguous path tolls of highways based on license plate recognition, which is applied to a system for splitting ambiguous path tolls for the highways based on license plate recognition. The method comprises the following steps of: (1) initializing the system, and setting reference values; (2) receiving license plate recognition information from a lane license plate recognition device and a door frame type license plate recognition device at an entrance and an exit, comparing the license plate recognition information and determining matched vehicles; (3) performing the real-time toll distribution for the matched vehicles, and calculating matching rates at the end of a day; and (4) making statistics every day according to the reference values and the license plate recognition information of the matched vehicles, and determining a method for splitting the tolls of unmatched vehicles according to the matching state, wherein a double door frame type splitting method, a single door frame type splitting method or a historical average proportion splitting method is adopted according to proportional relations of the matched vehicles. The method for splitting the ambiguous path tolls for the highways based on the license plate recognition has the advantages of ensuring that the tolls of vehicles of which the paths of are not identified obtains reasonable and objective splitting results so as to guarantee the legitimate interests of highway owners.

Description

Technical field [0001] The invention relates to a method for splitting tolls of ambiguous paths on expressways, in particular to a method for splitting tolls of ambiguous paths of expressways based on license plate recognition. Background technique [0002] With the construction of expressways and the development of networking technology, the number of expressways in my country has reached 80,000 kilometers, and the road network has become more and more complex, forming a ring network structure. On the highway network section, there are two or more paths to choose between the same entrance and exit, especially the current diversification of investment entities, and each section is managed and maintained by different operators. What is the problem caused by this? Effectively identifying the paths of vehicles, and splitting the tolls to different road section owners in a reasonable and objective manner is the path ambiguity problem faced by the current highway operation system. [0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G07B15/02
Inventor 朱耿先温丽荣张忠庆高伯翔王立红吴刚崔艳程云
Owner 天津高速公路集团有限公司
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