Automatic detection and early warning method for obstacle based on smartphone

Abstract

An automatic detection and early warning method for an obstacle based on a smartphone belongs to an obstacle detection and automatic warning method. The automatic detection and early warning method for the obstacle includes the following steps: calculating an included angle theta between the smartphone and a horizontal direction by using an acceleration sensor embedded in the smartphone, and further estimating a straight-line distance Lg from the smartphone to a front detection point and a horizontal distance Lh from a user to the front detection point; calculating an actual distance Lt from the smartphone to the front detection point by a camera; and determining whether an obstacle occurs in front by calculating the difference between Lt and Lg. The scheme of the invention has the advantages that: whether the obstacle exists in front is detected by comparing the difference between the actually measured distance and the estimated distance in real time, whether the obstacle occurs in front of the user can be measured accurately, simply and quickly, and the probability of occurrence of tragedies that the phubbers collide with trees or pedestrians during walking, or even cause car accidents or fall into rivers can be effectively reduced.

Description

technical field [0001] The invention relates to an obstacle detection and automatic early warning method, in particular to an obstacle automatic detection and early warning method based on a smart phone. Background technique [0002] With the rapid development of science and technology and the introduction of high-quality content, smart phones have become a part of people's study, work and life. Through mobile phones, people can communicate with friends conveniently, thereby shortening the sense of space distance between people; through mobile phones, people can easily find information such as surrounding restaurants, bus stops, traffic routes, etc., which is very convenient. People's daily life; through mobile phones, people can collaborate on issues they care about, which greatly improves work efficiency. However, it is precisely because the functions of smart phones are becoming more and more powerful that a considerable number of mobile phone users have developed mobile...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a smart phone-based automatic obstacle detection and early warning method to solve the problem that some mobile phone dependent people play with mobile phones while walking and cause tragedy

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