A parking space detection method and a parking space detection system

Abstract

The invention discloses a parking space detection method and a parking space detection system. The parking space detection method includes the following steps: obtaining the length L3 of the parking space detected by the ultrasonic module; obtaining the distance d between the vehicle detected by the ultrasonic module and the parking space; according to the The mapping relationship between the parking space length L3 and the distance d and the actual length L of the parking space obtains the actual length L of the parking space; wherein the mapping relationship between the length L3 of the parking space and the distance d and the actual length L of the parking space is obtained by collecting images Calibration acquisition. The present invention increases the mapping relationship between the length of the actual parking space and the length of the detected parking space on the basis of ultrasonic detection, and can realize the correction of the length of the detected parking space, thereby accurately determining the specific orientation of the obstacle and the specific space size of the parking space. The technical solutions in the prior art have greatly improved the accuracy of parking space detection.

Description

technical field [0001] The invention relates to the communication field, in particular to a parking space detection method and a parking space detection system. Background technique [0002] In automatic parking or automatic parking assistance systems (AP / APA), ultrasonic sensors on both sides of the vehicle body are generally used to detect parking spaces. The vehicle runs parallel to the space to be scanned at a constant speed. At the same time, the size of the barrier-free space is obtained by scanning, and then the parking trajectory is determined according to the size of the space, and finally the parking trajectory is executed. Since the ultrasonic probes are generally installed on both sides of the front of the car, and the detection direction is perpendicular to the vehicle body, when using the probes on both sides to scan the parking space, the ultrasonic detection beam has a horizontal angle, and the specific orientation of the obstacle and the specific space size ...

AI Technical Summary

Problems solved by technology

Since the ultrasonic probes are generally installed on both sides of the front of the vehicle, and the detection direction is perpendicular to the vehicle body, when using the probes on both sides to scan the parking space, the ultrasonic detection beam has a horizontal angle, and the specific orientation of the obstacle and the specific space size of the parking space cannot be determined.

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