Get-off blind area detection early warning method and device based on ultrasonic ranging

Abstract

The invention relates to the technical field of early warning detection, and discloses a getting-off blind area detection early warning method and device based on ultrasonic ranging, and the device comprises a detector, a central controller, and an alarm. The detector starts detection when the automobile speed is zero; the detector emits an ultrasonic signal and captures an ultrasonic reflection signal; and the central controller judges whether the obstacle is in the response interval or not, and if yes, the alarm gives an alarm. The position relation between the obstacle and the vehicle is accurately judged through logic judgment, when the obstacle is in the vehicle early warning interval, the alarm signals are output, and in the moving process of the obstacle, the alarm signals with different duration are output according to the moving relation between the obstacle and the vehicle so as to warn the moving relation of the obstacle. The influence of the obstacle on the vehicle can be better distinguished, so that a driver can be better reminded to observe and deal with the blind area of the vehicle, and traffic accidents are reduced.

Description

technical field [0001] The invention relates to the technical field of early warning detection, in particular to a detection and early warning method and device for a blind spot of getting off a vehicle based on ultrasonic ranging. Background technique [0002] With the development of the economy, the number of car ownership increases year by year. Due to the obstruction of the car's own components and the limitations of human eye observation, there are blind spots around the car. If there are obstacles such as isolation piers, parking bars, pedestrians, vehicles, etc. within the blind spot of the car, if the door is opened at this time, the door is easy Collision with obstacles, resulting in traffic accidents. [0003] In the prior art, images are often used to monitor the observation blind spot and assist the driver in making judgments. However, the cost of image monitoring is high, the observation range is small, and it is difficult to observe the blind spot in detail, a...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the deficiencies of the prior art, the present invention provides a method and device for detecting and early warning of the blind spot when getting off the vehicle based on ultrasonic ranging, which has the advantages of large observation range, early warning, and automatic prevention of the driver's illegal operation. It is difficult to remind the driver of obstacles in the blind area, and it is difficult to accurately realize the observation and early warning of obstacles in the blind area

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