Pre-Collision Safety

Main Related Technology of Pre-Collision Safety

Pre-Collision System with Pedestrian-avoidance Steer Assist

The system warns the driver when it detects a potential collision with a pedestrian or obstacle. If the driver does not take action to avoid the collision, the system uses increased pre-collision braking force and automatic braking to help prevent collisions with pedestrians.

Information detected by the extremely high frequency millimeter-wave radar and additional information on the three-dimensional object gathered by a stereo camera make it possible to judge at an early timing, whether a possible collision is about to happen. The system is not only able to detect cars and obstacles, but pedestrians as well.

Based on the anticipation, that accidents with pedestrians are likely to occur at night, a headlamp with a built-in near-infrared ray projector is utilized as well. The active illumination, sending out and reflecting near-infrared light allows the night view camera to detect the object.

Millimeter-wave radar and stereo camera

The Radar Method Pre-Collision System can detect vehicles, obstacles and pedestrians from information detected by millimeter wave radar, in addition to the information imparted from 3D object recognition by a stereo camera. A near-infrared projector built into the headlights is sued for detection during the nighttime.


Pre-Collision System with Driver Monitor

In addition to the millimeter wave radar and stereo camera to detect vehicles and obstacles, it detects the direction the driver is facing and whether it is daytime or nighttime by using a camera installed on the steering column cover and image processing computer. If the system judges that there is a possibility of a collision while the driver is not facing forward (look away) or the system detects driver's eyes closed for a certain length of time (sleeping), it prompts the driver with a warning buzzer and showing on the display.


Integrated control over VDIM (Vehicle Dynamics Integrated Management),
VGRS (Variable Gear Ratio Steering) and AVS

Steering Bypass Assist

Steering Bypass Assist aids steering to bypass the hazards when the driver recognizes the possible collision ahead.

When the system detects a possible collision, it widens the steering gear ratio so the tire is turned out more than the driver steered. At the same time, it controls the damping force of shock absorbers to help restrain the unstable movement of the vehicle. Then it help controls the behavior of the vehicle smoothly operated using VDIM.

Pre-Collision Intelligent Headrest

A censor built into the front headrest detects the head position.
Then “Pre-Collision Intelligent Headrest" shifts forward to help diminish the damage from whiplash when rear-ended at lower speed.