Vehicle occupant type detection device based on film switch technology and use method thereof

Abstract

The invention discloses a vehicle occupant type detection device based on a film switch technology and a use method thereof. The vehicle occupant type detection device comprises a sensor pad and an MCU (micro control unit) processing unit, wherein a sensing unit array produced according to the film switch technology is adopted by the sensor pad, and sensing units are connected in parallel. A type identification task is completed in the MCU unit according to the following steps: 1) every sensing unit is measured to obtain a binary body pressure distribution diagram; 2) extracting three characteristic parameters from the binary body pressure distribution diagram, i.e. the body pressure area, the sitting hip width and the body pressure concentration degree; and 3) obtaining real-time characteristic parameters of an occupant by adopting the parameters obtained in Step 2, inputting the characteristic parameters into a trained classifier to classify the occupant, and finally obtaining occupant type information. By adopting the device, physical characteristics of occupants can be identified effectively, and secondary damage of airbags to occupants as a result of differences of the physical characteristics of the occupants in a vehicle collision process can be reduced effectively.

Description

technical field [0001] The invention relates to a detection device, in particular to a device for detecting the type of a vehicle occupant, which uses membrane switch technology and intelligent identification technology to obtain information about the type of vehicle occupant, and provides it to an intelligent airbag system based on the intelligent control of the airbag. The vehicle occupant type detection device of membrane switch technology and its application method belong to the technical field of detection equipment for vehicles. Background technique [0002] In recent years, the widespread use of car seat belts and car airbags has greatly reduced the casualty rate of occupants in traffic accidents. However, since the conventional occupant restraint system is designed according to the 95th percentile male occupant in a normal position and sitting posture, conventional airbags are very likely to cause secondary collision injuries to off-position occupants, children and w...

AI Technical Summary

Problems solved by technology

However, because the conventional occupant restraint system is designed according to the 95th percentile male occupant in normal position and sitting posture, conventional airbags are very likely to cause secondary collision injuries to off-position occupants, children and women of small stature

According to the statistics of the National Highway Traffic Safety Administration (NHTSA), due to the improper deployment of the airbag and the incorrect sitting posture and position of the occupant, the airbag saved the lives of 1,000 occupants and caused 57 occupants to lose their precious lives.

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