Vehicle driving state evaluation method based on overtaking frequency

A state assessment, vehicle driving technology, applied in the direction of reflection/re-radiation of radio waves, instruments, utilization of re-radiation, etc., can solve the problems of not taking into account, single data collection method, complex algorithm operation, etc.

Active Publication Date: 2019-11-05
JILIN UNIV
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  • Claims
  • Application Information

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Problems solved by technology

However, the disadvantage of this method is that the data collection method is single, the algorithm operation is complex, and it is difficult to achieve real-time performance. At the same time, it does not take into account the special situation of intelligent vehicles compared with other vehicles in the traffic flow.

Method used

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  • Vehicle driving state evaluation method based on overtaking frequency
  • Vehicle driving state evaluation method based on overtaking frequency
  • Vehicle driving state evaluation method based on overtaking frequency

Examples

Experimental program
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Embodiment

[0118] A set of fuzzy judgments for judging the safety status of driving vehicles is established for vehicle safety. According to the membership function of each parameter, the relationship table between different parameters and membership degree is established as follows:

[0119] Table 1: Typical data of overtaking frequency X on fuzzy judgment set U

[0120] Frequency of overtaking ＞0 0 ＜0 Membership 0.5 1 0.7

[0121] Table 2: Typical data of urban road speed on fuzzy evaluation set U

[0122] speed 20 50 90 Membership 0.9 0.7 0.5

[0123] Table 3: Typical data of the vehicle state on the fuzzy evaluation set U

[0124] vehicle status 80 60 30 Membership 1 0.7 0.4

[0125] Table 4: Typical data of road conditions and environment on fuzzy evaluation set U

[0126] Road conditions and environment 80 55 35 Membership 0.9 0.6 0.3

[0127] According to the above table, esta...

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Abstract

The invention provides a vehicle driving state evaluation method based on the overtaking frequency. The method comprises the following steps that 1, through a millimeter wave radar, and vehicle targets which have overtaking behaviors on driving vehicles of lanes on the two sides are obtained; 2, through a GPS tachymeter, the vehicle speeds of the driving vehicles are obtained, and vehicle targetsovertaken by the driving vehicles of the lanes of the two sides are obtained; 3, according to the vehicle targets which have the overtaking behaviors on the driving vehicles of the lanes on the two sides and are acquired in step 1 and the vehicle targets overtaken by the driving vehicles and acquired in step 2, the overtaking frequency is obtained; 4, a fuzzy judgement set based on the overtakingfrequency is established, threshold values of evaluation values of the driving vehicle states under different working conditions are set, a rule base rule is applied to inference with credibility, andthe safety performance of the vehicles is comprehensively evaluated. The method is high in real-time performance, reliability and practicability, has no interference, and can effectively evaluate thedriving states of the vehicles in real time.

Description

technical field [0001] The invention belongs to the technical field of intelligent vehicles and vehicle safety driving monitoring, and in particular relates to a vehicle driving state evaluation method based on overtaking frequency. Background technique [0002] With the rapid development of intelligent vehicle technology, the safety assessment during its driving has become one of the current research hotspots. When the vehicle is driving in normal traffic flow, the driver of a traditional vehicle can make a corresponding judgment on whether the driving state of the vehicle is safe or not based on subjective factors such as the vehicle condition and the speed of the vehicle. However, for intelligent vehicles, due to external information The limitations of the vehicle, especially the limitations of long-distance information, will affect the vehicle-mounted EUC's judgment on the driving state of its own vehicle. How to quantify the driving state of the intelligent vehicle in t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S13/08G01S13/91G01S13/92G01S19/52G06Q10/06
CPCG01S13/08G01S13/91G01S13/92G01S19/52G06Q10/0639Y02T10/84
Inventor 李世武黄梦圆吕东冶李学达赵士舒韩丽鸿
Owner JILIN UNIV
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