Distance measuring device and method and vehicle

Abstract

The invention provides a distance measuring device and method and a vehicle. The distance measuring device comprises an image acquisition module, a lane line identification module, a distance collection module and an intelligent decision module, wherein the image acquisition module is used for collecting a front image of the vehicle, and transmitting the front image of the vehicle to the lane line identification module; the lane line identification module is used for identifying a lane line in the front image of the vehicle, marking off a lane with the lane line as a boundary, and transmitting the lane marked off by the lane line identification module to the intelligent decision module; the distance collection module is used for collecting a distance between the front vehicle or an obstacle and the vehicle, and transmitting the distance to the intelligent decision module; and the intelligent decision module is used for determining the lane where the front vehicle or the obstacle is located and the distance between the front vehicle or the obstacle and the vehicle according to a mounting angle of the distance collection module and the lane and the distance which are marked off by the lane line identification module. By adoption of the technical scheme of the invention, the distance can be measured at divided lanes.

Description

technical field [0001] The present invention relates to the field of vehicle intelligent security, and in particular, to a distance measurement device, a method and a vehicle including the device. Background technique [0002] Accurately measuring the distance between the vehicle and the vehicle or obstacle ahead is a necessary prerequisite for realizing vehicle safety and intelligence. Based on the distance between vehicles or between vehicles and obstacles, advanced functions such as automatic collision avoidance, vehicle distance maintenance, vehicle speed follow, and automatic driving can be realized. [0003] At present, researchers have invented some methods to achieve vehicle distance measurement. CN101992729A discloses a "vehicle distance sensor", which uses an infrared ranging sensor to measure the distance between surrounding vehicles or obstacles; CN102514524A discloses a "vehicle distance warning system", which uses an ultrasonic probe to monitor the distance be...

AI Technical Summary

Problems solved by technology

The above methods all use physical signals to directly measure the distance between vehicles, but they cannot know the lane in which the vehicle in front is located.

Therefore, if figure 1 As shown, when the vehicle 10 is driving on the lane 101 and the vehicle 11 in front is turning, the vehicle distance measured by the above measurement method may be the distance between the vehicle 10 and the vehicle 11 driving on the adjacent lane 111. Subsequent judgment of the distance between vehicles will keep a relatively large distance between the vehicle 10 and the vehicles 11 on the adjacent lane 111, which will waste road resources and reduce the speed of the vehicle needlessly.

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