These systems are designed to minimize accidents by addressing the main causes of collisions: driver error, distractions lane keeping assist system pdf drowsiness. The first production lane departure warning system in Europe was developed by the United States company Iteris for Mercedes Actros commercial trucks.
The system debuted in 2000, and is now available on most trucks sold in Europe. In 2002, the Iteris system became available on Freightliner Trucks’ North American vehicles.
In both these systems, the driver is warned of unintentional lane departures by an audible rumble strip sound generated on the side of the vehicle drifting out of the lane. No warnings are generated if, before crossing the lane, an active turn signal is given by the driver. The PCB and camera sensor from a Hyundai Lane Guidance camera module.
Lane Detection System used behind the lane departure warning system uses the principle of Hough Transform and Canny edge detector to detect lane lines from real time camera image fed from the front end camera of the automobile. A basic flowchart of how a lane detection algorithm works to help lane departure warning, has been attached on the right side. Nissan Motors began offering a lane-keeping support system on the Cima sold in Japan.
It is also designed to make highway driving less cumbersome, by minimizing the driver’s steering input. A camera, mounted at the top of the windshield just above the rear-view mirror, scans the road ahead in a 40-degree radius, picking up the dotted white lines used to divide lane boundaries on the highway.
The computer recognizes that the driver is “locked into” a particular lane, monitors how sharp a curve is and uses factors such as yaw and vehicle speed to calculate the steering input required. A warning tone is triggered to alert the driver when the vehicle begins to drift over the markings. Also in 2004, Toyota added a Lane Keeping Assist feature to the Crown Majesta which can apply a small counter-steering force to aid in keeping the vehicle in its lane.
Citroën became the first in Europe to offer LDWS on its 2005 C4 and C5 models, and its C6. This system uses infrared sensors to monitor lane markings on the road surface, and a vibration mechanism in the seat alerts the driver of deviations.