1
what’s the use?
to reduce traffic accidents due to lane departure occurs when the vehicle deviates from the lane, the system alerts the driver to remind correction.
2
advantages
· alarm system can quickly respond to and communicate it to the driver .
3
Did you know?
· when veering off the road, some models can even automatically correct direction slightly, and some just issue such as sound or vibration alarm to alert the driver.
– when the turn signal is opened, the system recognizes that the vehicle is active switch lanes or turning, does not issue warning.
· inclement weather might affect the accuracy of the system.
4
Technology Principle
lane departure warning system is composed of a camera, a controller and sensors, when the lane departure when the warning system is turned on, the camera (typically disposed in the body sideOr mirror position) acquired in time will travel lane marking line, the position parameters of the current lane in the car by the image processing, when the car deviates from the lane is detected, the sensor will promptly collect data and the operating state of the vehicle driver, after an alarm signal generated by the controller, the entire process takes approximately 0.5 seconds to complete, the more reaction time for the driver.
there is a way to capture infrared sensor, an infrared collection signal by analyzing road conditions, even in the harsh environment of the road, a lane marking can be recognized.
5
Further reading
AURORA system
The system consists of the U.S. card robot developed at the University College of Jimei Long success in 1997. The system comprises a color camera with a wide-angle lens, and a portable digitizer SunSparc workstation components. The system is installed in a vehicle through the field of view about a top side of the color camera detects the vehicle lane markers next to 1.5m 1.6m-region, captured video camera output through the digital converter and processed on a portable workstation SunSparc processing speed to 60Hz.
AutoVue system
The system jointly developed by DaimlerChrysler Corporation and former US Iteris company. The system consists of a camera mounted on the rear windshield of an automobile, consisting of two stereo speakers, a small display device and a control unit or the like. The system works in real time by monitoring the position of the vehicle in the current lane, the vehicle calculates the distance to the lane mark, and then compared to the alarm set distance, determines whether warning. Upon detection of lane departure will occur, it will rumble sound emitted when driving on long vocal cords a similar vehicle to alert the driver of the vehicle position correction. Currently, AutoVue system has been equipped as an option on a variety of trucks in Europe.
Mobileye_AWS system
The system was developed by Mobileye is headquartered in the Netherlands company. The system is installed on the windshield using a single camera monitoring the front of the lane mark, measuring and monitoring the distance between the vehicle and the road boundary. The lane departure warning system, road boundary detection module calculates the position of the vehicle relative to the lateral movement of the vehicle and the lane, the predicted vehicle lane identification traverse time, when the time is less than the set value, the system is triggered and visual warnings audible warning to the driver to react appropriately to different states and reduce the risk of accidents. The system lane departure conscious, without braking and road signs, etc. to produce a warning can be suppressed.
DSS system (DriverSupportSystem)
The system proposed by the Mitsubishi Motors Corporation in 1998, and in the fall of 1999 to the model car. The system consists of a small CCD camera mounted in a rearview mirror of the car, and some sensors detect the state of driver’s operation of the vehicle behavior, and visual and audible warning device. The system uses the vehicle obtained by the CCD camera in front of the lane mark, the other vehicle information acquired by the sensor data and the operating state of the behavior of the driver and the like, it is determined whether the vehicle has started departing from the lane. If necessary, the system will use visual warnings, audible warning and the vibration of the steering wheel to alert the driver to drive the vehicle carefully.
JLUVA-1 system
The system was developed by Intelligent Vehicle Jilin University research group. The system is based on the front view monocular vision system, mainly by vehicle power, embedded computer, a display device consisting of black and white CCD camera, the data lines, speakers and an image acquisition card. Using a CCD camera system installed at the automobile rearview mirror position acquired road image in front of the car, to get the current vehicle position in the lane parameter by image processing, when the car upon detection of the white line from the own lane is possible too close biased into neighboring lane and when the driver did not hit the turn signal, the system will issue a warning message to remind drivers to pay attention to correct this unintentional lane departure, reducing as much as possible lane departure accidents.
deviates from the lane based on DSP embedded alarm system
Southeast University developed system, based on monocular vision is a front view of the system, the conversion module and the decoding module circuit, a buffer circuit module, a media processor (DSP) circuit module, encoding and digital / analog conversion circuit module and other modules / composition. The system acquires through car camera analog video signal is tracked lane mark, the decoded number to generate a high-speed digital signal processor DSP of the media stream after a video interface buffer, and then the digital video signal feature values of the lane by the video processing module extraction, and finally the processed video signal encoding and transmitting digital / analog conversion circuit output display.