Mitsubishi Motors Corporation (MMC) has developed a new active safety system it calls e-Assist that uses millimeter-wavelength radar as well as a camera. e-Assist delivers three functions: Adaptive Cruise Control System (ACC); Forward Collision Mitigation System (FCM); and Lane Departure Warning System (LDW).
MMC will use the e-Assist system for the first time on the new Outlander SUV which is to be released this October in Japan. Comprising the three functions detailed below,
Adaptive Cruise Control System (ACC). This radar-based system maintains a safe distance with the vehicle in front, even in slow-moving heavy traffic.
Forward Collision Mitigation System (FCM). This radar-based system automatically applies the brakes when there is a sudden reduction in the distance with the vehicle in front and helps avoid a collision or reduce impact damage in the event of a collision.
Lane Departure Warning System (LDW). This camera-based system alerts the driver when the vehicle starts to drift from its lane, aiding driver concentration.
The millimeter-wave radar for the ACC and FCM systems is mounted behind the front grill and monitors the distance to and relative speed of the vehicle in front. The 77 GHz millimeter-wavelength radar unit provides reliable and stable performance regardless of direction of sunlight or other light, driving at night or in rain and has a maximum detection range of around 200 meters.
The camera unit for the LDW system is mounted at the top of the windshield and monitors the position of the lane dividing lines in front of the vehicle. To prevent fogging of the lens and maintain precise and consistent imaging quality, the unit is mounted directly to the windshield inside the vehicle. The unit also incorporates a sensor which automatically turns on the windshield wipers when it detects raindrops on the windshield.