A method and system for detecting an intelligent blind spot of an automobile

Abstract

The invention protects a method and system for detecting intelligent blind spots of automobiles. The method detects the working signal of the wiper in real time, and sets the judging logic of sunny and rainy days according to the signal performance of different gear positions of the wiper. By distinguishing between rainy and sunny working conditions, Reduce the problem of false alarms in rainy days caused by ultrasonic sensors due to hardware limitations. Further, in the sunny detection mode, the system sets the sensitivity of the ultrasonic sensor to a relatively strong value, which is sensitive to the detection of obstacles and has a high alarm success rate; in the rainy detection mode, the system reduces the sensitivity of the ultrasonic sensor probe and Compared with the original single detection strategy, the detection performance has been improved to a certain extent.

Description

Technical field [0001] The present invention is in the field of automotive electronics, particularly automotive smart blind spot detection. Background technique [0002] Currently blind spot detection systems are widely used in the automotive sector, and even become a feature of all models or high-end models as standard. Universal blind spot detection system, lane change danger for the visual blind spot mirrors to bring, played a very good role avoid, reduce the risk of accidents that occur when users change lanes. Existing blind spot detection system, based primarily on the development of millimeter-wave radar or ultrasonic radar, because the price is lower than the ultrasonic wave radar, a growing number of market models equipped with ultrasonic radar-based blind spot detection system, the current prior art has the following disadvantages : [0003] 1, ultrasonic radar, detection accuracy is not high, there is the problem of false positives due to rain tires rolling drops of wa...

AI Technical Summary

Problems solved by technology

[0003] 1. Ultrasonic radar is used for detection, and the detection accuracy is not high. There is a problem of false alarms caused by the water droplets rolled up by the tires in rainy days, which will occur frequently in rainy days

[0004] 2. Without distinguishing between sunny and rainy working conditions, a detection strategy that takes into account both sunny and rainy days is adopted, resulting in false positives in sunny days and false positives in rainy days

The system detects the number of water droplets and filters them through the ultrasonic sensor. Due to the physical characteristics of the ultrasonic wave itself, it is impossible to make an accurate judgment on the rainfall. It can only reduce certain false positives in rainy days, and it will still cause false positives.

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