Real-time monitoring and early-warning device and method for nearby vehicle flow for vehicle on highway

Abstract

The invention belongs to the technical field of automobile driving active early-warning and discloses anearly-warning device and method for nearby vehicle flow real-time monitoring for a vehicle on the highway. The device includes four millimeter wave radars, a vehicle speed sensor, a vehicle-mounted CAN bus, a CAN bus converter, a microprocessor and a flash buzzer; the signal output end of each millimeter wave radar and the signal output end of the vehicle speed sensor are electrically connected with the vehicle-mounted CAN bus respectively, the vehicle-mounted CAN bus is also electrically connected with the signal input end of the CAN bus converter, the signal output end of the CAN bus converter is connected with an I / O input end of the microprocessor, and the I / O output end of the microprocessor is electrically connected with a control end of the flash buzzer. The device can detect the vehicle flow in an traffic environment in which the vehicle is, determines whether such danger conditions that the vehicle speed is relatively high and the vehicle flow exceeds a threshold value exist or not so as to alert a driver to be careful to change tracks or increase speeds, and reduces the possibility of operation errors of the driver.

Description

technical field [0001] The invention belongs to the technical field of active early warning for vehicle driving, and in particular relates to a real-time monitoring and early warning device and method for traffic flow around a self-vehicle on an expressway. Background technique [0002] According to the statistical annual report data of the Ministry of Public Security's traffic accidents in recent years, highway chain collision accidents occur from time to time. When driving on the expressway, the vehicle speed is fast, and as the vehicle speed increases, the driver's field of vision narrows, the gaze time shortens, and the ability to perceive the traffic environment and vehicle speed becomes poor. At this time, the driver needs to perform lane changes carefully. , Car following, acceleration and deceleration, etc., especially when the traffic flow in the lanes around the vehicle exceeds a certain threshold, it is necessary to drive the vehicle carefully, otherwise it is ver...

AI Technical Summary

Problems solved by technology

When driving on the expressway, the vehicle speed is fast, and as the vehicle speed increases, the driver's vision becomes narrower, the gaze time shortens, and the ability to perceive the traffic environment and vehicle speed becomes poorer. At this time, the driver needs to perform lane changes carefully. , Car following, acceleration and deceleration and other operations, especially when the traffic flow in the lane around the vehicle exceeds a certain threshold, you must drive the vehicle carefully, otherwise it is very likely to make improper subjective judgments, leading to serial collision accidents

[0003]At present, most of the existing active safety systems use various sensors to detect the driving dynamics of the vehicle in front and the vehicle in front, and give a warning of danger, but they have not Monitoring of traffic flow in and around

In the actual traffic environment, the traffic flow monitoring is generally realized by installing the camera on a fixed device on the roadside, which is used for the driving path planning of the navigation map, but it cannot be applied to the monitoring of the dynamic traffic environment where the vehicle is located.

Images