TRW Unveils New Intelligent Safety System
The system will be ready for production in 2013. TRW's active control retractor (ACR) system has been in production since 2002 and is currently available on a number of vehicles including Mercedes, Hyundai, Jaguar and Audi vehicles.
The system combines TRW's automatic emergency braking (AEB) system with its ACR seatbelt technology to reinforce driver warning; improve occupant position in relation to the vehicle's airbag restraint system; and provide automatic braking support.
Working in isolation, the two systems use data from environmental and vehicle dynamics sensors to offer automatic emergency braking support without driver intervention, or remove seatbelt slack to help maintain the position of the driver or passenger in anticipation of airbag deployment.
The integrated system utilizes a mid range radar in combination with a scalable video camera which independently gather data of the road and traffic situation in front of the host vehicle: the radar looks forward up to 150 meters, while the camera covers a closer, but wider field of view and helps to detect and classify objects in front.
If the sensors detect a critical situation, the driver is alerted to the potential danger (visual, audible or haptic feedback) and the ACR system pretensions the seat belt which can provide an additional warning to the driver as well as remove seat belt slack to help maintain the position of the occupant prior to airbag deployment. Furthermore, a certain amount of brake pressure will be applied automatically.
If the sensors detect an unavoidable impact - and in the case of insufficient or no driver reaction - the ACR will be applied with maximum force prior to the impact, to minimize the forward displacement of the occupant. AEB is the final action as maximum brake pressure is applied - ensuring the highest speed reduction after the point of no return.
Will the new system mitigate the effects of a crash?
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