The Status of Advanced Pedestrian Safety Systems in Cars

Published:2010/7/13 19:31:00 Author:Li xiao na From:SeekIC

Apart from the safety of driver, the safety of pedestrian is also very important, which will be the main development task of future automotive industry. The protection of pedestrian is also included in the recent collision test in Europe. The engine hood system and the pedestrian safety airbag are main devices to protect the pedestrians throughout the world.

The engine hood system make people collide on the soft surface of the car, reducing the injury severity of the people outside the car when the accident is happening. Research indicates that if there is enough space in engine or battery, the engine hood system will open to reduce the injury severity. If the front part of the engine hood moves back for some distance, the collision injury will be eased dramatically. The engine hood system can alter the kinetic energy into the lid lifting energy to reduce the strength between pedestrian and the car. Improvements are also made on the front bumper which is the second contact area of collision. The improved front bumper has the high density foams and new construction to control the collision. The headlamp is designed to ensure the reduction of impact energy as well as the front bumper.

The pedestrian airbag aims to prevent people on the road from striking the front windshield. Ford car has applied two kinds of new airbag which is able to protect the pedestrian, one is the engine hood airbag, and the other is front airbag. Match usage of the two devices can protect people on the road better. The fold form and transect design of the engine hood airbag make it match the outline of the car, ensuring the safety of people outside the car. The front airbag can cover the windshield wiper and the bottom of windshield, but never hide the view of driver.

Apart from the above two systems, there is a safety secure system which implements the active protection of pedestrian. The device can notify the driver before the accident without delay.

No matter how advanced the technology is, the safety consciousness of driver and pedestrian should not be loosened. We should never consider that the dangerous will not happen to us. In order to protect ourselves and other people, we had better obey the traffic rules. The related integrated circuit of pedestrian safety system is TPS723A.

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