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Safe vehicle following distance control system based on vehicle-road cooperation and control method thereof

A technology of following distance and control system, applied in traffic control system of road vehicles, traffic control system, service based on specific environment, etc., can solve problems such as unsafe and effective control, and reduce traffic accident rate and cost. , the effect of improving safety

Active Publication Date: 2020-07-10
TIANJIN UNIV OF TECH & EDUCATION TEACHER DEV CENT OF CHINA VOCATIONAL TRAINING & GUIDANCE
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese Invention Patent Publication No. CN110349423A discloses a roadside system based on vehicle-road coordination, including: a camera device installed on the road, an edge computing industrial computer, and an edge computing workstation. This technical solution can obtain more comprehensive and accurate traffic information on the road Road condition information, in order to provide auxiliary information to vehicles in a timely manner, improve traffic safety and traffic efficiency, its disadvantage is that it only obtains traffic road condition information, and does not effectively control the safety of the front and rear vehicles following the car

Method used

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  • Safe vehicle following distance control system based on vehicle-road cooperation and control method thereof
  • Safe vehicle following distance control system based on vehicle-road cooperation and control method thereof
  • Safe vehicle following distance control system based on vehicle-road cooperation and control method thereof

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Embodiment 1

[0058] figure 1 A block diagram of a vehicle-road coordination-based safety distance control system provided for an embodiment of the present invention. like figure 1 As shown, the system includes: intelligent vehicles A1, A2...AN, AN+1 driving on the road, and a roadside unit 10 and an edge industrial computer 20 arranged beside the road, and the intelligent vehicles are all equipped with a vehicle-mounted GPS module , ACC system, speed sensor and vehicle ECU. The speed sensor measures the running speed of the car itself.

[0059] Take two-way two-lane as an example, see figure 2 and image 3 , On the side of the road, a roadside unit is set every 200 meters, and every two roadside units are connected to an edge industrial computer to monitor the traffic conditions on the road section.

[0060] Wherein, the vehicle-mounted GPS module is used to collect the first speed of the smart vehicle, assuming that the measured first speed of the vehicle in front is 61km / h, and the...

Embodiment 2

[0084] The difference from Embodiment 1 is that every three roadside units are connected to an industrial computer.

[0085] The monitoring range of the roadside unit is affected by the coverage of the communication technology adopted. Taking 5G communication technology as an example, the current coverage of 5G communication technology is determined by factors such as the degree of use, the density and height of nearby buildings, and the quality of the equipment. Decide. The interval between adjacent roadside units is related to vehicle density, road scene and information service quality, etc., and can be determined according to specific conditions.

[0086] In summary, the present invention provides a vehicle-road coordination-based safe following distance control system, wherein the vehicle-mounted GPS module and the speed sensor all collect the first speed and the second speed of the intelligent vehicle in real time; Fusion with the second speed; the millimeter-wave radar ...

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Abstract

The invention discloses a safe vehicle following distance control system based on vehicle-road cooperation. The system comprises a vehicle-mounted GPS module in communication connection with a vehicleECU, a plurality of road side units arranged on the road side at intervals, and an edge industrial personal computer in communication connection with the road side units. Vehicle speeds are collectedand fused through a speed sensor and a vehicle-mounted GPS module, the fused speed is sent to the edge industrial personal computer, and a safe vehicle following distance is obtained through calculation and sent to the ECU of a rear vehicle; and when safe vehicle following driving is not met, an ACC system of an intelligent vehicle intervenes to reduce the driving speed. The invention also discloses a control method thereof. According to the invention, safe driving of the intelligent vehicle in the following state can be guaranteed, traffic accidents caused by emergency braking of the front vehicle are avoided, and the hardware cost and the calculation cost of the intelligent vehicle are greatly reduced.

Description

technical field [0001] The present application relates to the field of unmanned driving technology, and in particular to a safe following distance control system and control method for intelligent vehicles based on vehicle-road coordination in the car-following state. Background technique [0002] With the development of technologies such as Internet of Vehicles, 5G, and vehicle-road coordination, the field of driverless driving has received more and more attention. Although the unmanned vehicle industry is developing rapidly, the current technical route of unmanned driving mainly relies on the sensing and decision-making of the automotive equipment itself. There is a huge computing system in the car and the cost is expensive, but it still cannot perfectly meet the needs of autonomous driving. various requirements, especially the security requirements. For example, when the vehicle in front brakes suddenly during driving, if the intelligent vehicle does not maintain a reaso...

Claims

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Application Information

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IPC IPC(8): G08G1/16G08G1/0967G08G1/052H04W4/44
CPCG08G1/166G08G1/164G08G1/096725G08G1/096783G08G1/052H04W4/44
Inventor 胡乐媛关志伟刘晓锋杜峰张朝勇李俊凯郑国财张建强史星彦吴迪蔡一杰
Owner TIANJIN UNIV OF TECH & EDUCATION TEACHER DEV CENT OF CHINA VOCATIONAL TRAINING & GUIDANCE
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