Curve speed warning method based on vehicle-road coordination

Abstract

The invention discloses a cooperative vehicle infrastructure-based curve speed warning method, which comprises the following steps: putting a road side unit at a curve, broadcasting out curve information periodically, and judging whether a vehicle heads for the curve or not in advance by a vehicle terminal according to the information of the vehicle and the received curve information; giving out the distance to the curve and the speed-limit prompt of the curve in advance if the vehicle heads for the curve; giving out the speed-limit prompt of the curve and detecting whether the vehicle is overspeed or not in real time if the condition that the vehicle drives into the curve is detected, and giving out overspeed warning if the vehicle is overspeed to remind a driver of driving at a safety speed; relieving the warning when the condition that the vehicle puts off the curve is detected. According to the method, the limiting speed of the curve can be given out in advance, and the condition that the vehicle drives into the curve and puts off the curve can be efficiently and reliably judged; written or audio warning is given out when the vehicle is overspeed, and therefore, a selectable simple scheme is provided for the auxiliary driving safety application of Internet of vehicles.

Description

technical field [0001] The invention belongs to the technical field of the Internet of Things, and in particular relates to a curve speed early warning method based on vehicle-road coordination. Background technique [0002] The Internet of Things (IoT) is a network in which things are interconnected. Its foundation is the Internet and it is an expansion of Internet applications. With the continuous innovation of the Internet of Things technology and the rapid advancement of industrialization, the Internet of Things has important applications in the fields of road traffic safety and intelligent transportation. In terms of road traffic safety and intelligent transportation, the Internet of Things is mainly based on vehicle-to-vehicle wireless communication, vehicle-to-roadside unit, and vehicle-to-network wireless communication. Driving and comfortable driving. In this field, the Internet of Things is also called the Internet of Vehicles or the Vehicle Ad Hoc Network. Using...

AI Technical Summary

Problems solved by technology

However, most of the current speed limit reminders are only the reminders of traffic warning signs. Drivers often ignore them for various reasons. Sometimes when driving, they often pay attention to whether there is a speed limit on a certain road section, which distracts the driver's attention. Therefore, the curve speed warning technology is an important topic in road safety research.

[0005] Most of the curve speed warning strategies are complicated to implement, and often introduce large communication overhead, resulting in unnecessary waste of network resources, or need to use infrared sensors, ground induction coils and other equipment, which is not economical, and roadside units and vehicle-mounted The terminal needs complex algorithms to process the signals collected by the sensor, resulting in a large system overhead. In addition, these curve speed warning strategies cannot efficiently predict whether there is a curve ahead of the vehicle and give the curve limit speed in advance.

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