The novel Pedestrian Protection System developed by TRW Automotive Holdings helps reduce pedestrian accidents. This device features three Remote Acceleration Sensors (RAS) in the front bumper that sends out acceleration warning signs to an Electronic Control Unit (ECU) for validating the data. These sensors identify whether the car has been hit by a human or other objects.
When detecting a pedestrian collision, the system activates the hood lifter systems placed on both sides of the hood and generates extra space between the hood and the hard engine parts, thus lowering the problems associated with injury or death.
This system permits suppleness of the sensor assembly across a wide range of vehicle applications, provides electronic transmission interface within standard industry protocols offering high security and compatibility and simplifies the usage of the company’s proprietary X-RISA_8 pedestrian impact sensing algorithm.
Martin Thoone, vice president of TRW global electronics engineering, stated that the company has been globally delivering airbag ECUs and crash sensors and is a pioneer in the development of algorithms for regulating airbag operations. He added that the RAS can be coupled to a unique ECU in the Pedestrian Protection System, and the software should be combined with a prevailing TRW airbag control unit for providing an economical solution. The system is highly secure, and its operation is oriented on the successful technology for the software, hardware, and control algorithms.