[WapCar] Lane departure warning system (LDWS) is a mechanism designed to warn the driver when the vehicle begins to deviate from its lane (unless a turn signal is on in that direction) on freeways and arterial roads. These systems are designed to minimize accidents by addressing the main causes of collisions: driver error, distractions and drowsiness. When the detection element finds a problem, the system will send out a warning signal, vibrate the steering wheel, and even actively pull the steering wheel back to remind the driver to return to the lane.
The lane departure warning system is mainly composed of three parts: camera, controller and sensor. The camera will collect the marking line of the driving lane at all times after the lane departure system is turned on, then obtain the position parameters of the car in the current lane through image processing. When detecting that the car has deviated from the lane, the sensor will collect vehicle data and the driver’s operating status in time, then the controller sends out an alarm signal, and the whole process is about 0.5 seconds.
Lane departure warning systems rely on visible lane markings, if markings covered in snow or old lane markings left visible can hinder the ability of the system. In order to solve the problem, engineers developed an infrared sensor collection method, this sensor is generally placed on both sides of the front bumper, and collect signals to analyze road conditions by infrared signal. Therefore, it can promptly remind the driver of the deviation state of the car under any road conditions.