Machine vision-based automatic detection method for parameter and anomalies in airbag explosion process

Abstract

The invention belongs to the field of machine vision detection, and particularly relates to a machine vision-based automatic detection method for parameters and anomalies in an airbag ignition process. The method comprises: designing a spatial position relationship between a plurality of cameras and an air bag to ensure that the algorithm can perform parameter measurement and anomaly detection onan air bag point explosion process with relatively high robustness; performing synchronous image acquisition by the plurality of cameras until the ignition process is finished while the ignition process of the airbag is started; sorting and grouping the images, performing air bag segmentation on the grouped images, generating a Vapprox-t curve of the air bag, and dividing an air bag point explosion process; performing air bag pop-up anomaly detection in the Tt1-Tt2 time period of the air bag detonation process, recovering the air bag space topological shape and measuring all parameters of theair bag in the Tt2-Tt3 time period of the air bag detonation process, and displaying finally the parameters and anomaly information of the air bag detonation process. The detection process is efficient and flexible, the detection result visibility is good, the application range is wide, and the method can be suitable for airbags at all positions in an automobile.

Description

technical field [0001] The invention belongs to the field of machine vision detection, in particular to an automatic detection method for parameters and abnormalities of an airbag detonation process based on machine vision. Background technique [0002] Airbags have been widely used in the automotive industry as the main driver and passenger safety protection restraint system in the event of a car collision. The various characteristics and parameters after the airbag is detonated directly affect the safety of people. Factors such as the rationality of the airbag design, the correctness of the installation, and the safety of the detonation process directly affect the use of the airbag. The most direct reflection of the performance of the airbag detonation process is the various parameters during the detonation process, the topological shape of the airbag, and whether there is any ejection abnormality and other factors. Therefore, it is of great significance to design the th...

AI Technical Summary

Problems solved by technology

However, the above method cannot measure the different abnormalities that may occur in different time periods of the airbag, and cannot perform three-dimensional restoration of the entire airbag. The provided airbag parameters are less and the universality is poor.

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