Advanced Driver Assistance Systems

2018-11-06 15:20:06

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Advanced Driver Assistance Systems or ADAS,take advantages of a variety of sensors mounted on the vehicle  to collect environmental data .  Its functions ,which enable driversto detect possible danger, can identify , detect and track static and dynamic objects  in the fastest time .According to the definition of  Wikipedia, automotive advanced driver assistance systems typically include: GPS(Car navigation systems)、ITS(Intelligent Traffic System)、TMC(Traffic Message Channel),AVM (Around View Monitoring),AP(Automatic parking)、ISA(Intelligent speed adaptation or intelligent  speed advice)、IV(Internet of Vehicles)、ACC(Adaptivecruise control)、 AEB(Autonomous Emergency Braking)、LDWS(Lanedeparture warning system)、LKAS(Lane Keeping Assist System)、FCWS (Forward Collision Warning System)、Collision avoidance system or Precrash system 、NVS(Night Vision System)、HBA (High Beam Assist)、          AFS(Adaptive Front-lighting System)、PCW(Pedestrian Collision Warning)、TSR(Traffic sign recognition)、TLR (Traffic Light Recognition)、BSD( Blind spot detection) ,DFM(Driver Fatigue Monitor System) 、DAC(Down-hill assist control)and EVW(Electric Vehicle Warningsounds).

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AVM (Around View Monitoring)


Our assist system uses four fisheye or wide-angle lens camera to capture images around the vehicle, and then these four images are converted to one image of bird's-eye view .

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AP(Automatic Parking)


Different automatic parking systems adopt different methods to detect objects around the vehicle. Some are equiped with sensors, , which can act as not only a transmitter but  also a receiver, in the front and rear bumpers .  When the signal which emitted by the  sensors encounter an obstacle and is reflected back , the computer will determine the position of the obstacle with the data it received.  While other systems installed cameras or radar to detect obstacles. No matter what method they adopt, the result is the same :  the cars around , the size of the parking space and distance to the roadside will be detected by the system and the car will be parked according to the instrucitons of the system.

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LKAS(Lane Keeping Assist System)


LKAS is an intelligent system. When the vehicle deviates from the lane line non-initially , the system can automatically control  and adjust  the steering to maintain a center position in the lane.  LKAS cameras and sensors detect vehicle tracks and transmits a signal to the control system to keep the vehicle traveling in the right track.

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ACC(Adaptivecruise Control)


Adaptive Cruise Control is an intelligent control system, which is developed from already existing cruise control technology . In the process of the moving ,  sensors (radar)  mounted in the front of the vehicle continuously scan the road ahead while the wheel speed sensor collects speed datas . When the distance between two vehicles is too short , ACC control unit  along with the Anti-lock braking systems and engine control systems  brakes the car properly, reduces the output power and keeps a safe distance from the vehicles ahead.

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AEB(Autonomous Emergency Braking)


AEB systems improve safety in two ways: firstly, they help to avoid accidents by identifying critical situations early and warning the driver; and secondly they reduce the severity of crashes which cannot be avoided by lowering the speed of collision and, in some cases, by preparing the vehicle and restraint systems for impact.

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BSD( Blind Spot Detection)


Two cameras located on the rearview mirror dectects vehicles entering your blind spots. They are capable of detecting objects up to 70m from the rear. Activated at vehicle speeds above10kph, Blind Spot Detection  flashes a first stage warning light on your side mirror when vehicles are detected within the system boundary. 

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TSR(Traffic Sign Recognition)


The system consists of a forward-facing camera, which scans the road ahead for traffic signs. This camera is connected to character recognition software, which then makes a note of any changes described by the signs, and relaying it onto the car’s instrument panel.

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TLR (Traffic Light Recognition)


TLR is used to recognize the  traffic lights, and notice the driver of  the lights ahead in advance.  In addition  TLR can work with Vehicle Cruise Control and Image Storage System  as well .

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DFM(Driver Fatigue Monitor System)


The system uses automotive-grade image sensors to capture infrared images of the operators and a high-speed digital signal processor to analyze and identify if they have become inattentive, either due to drowsiness or distraction. 

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NVS(Night Vision System)


Using infrared technology, the system analyzes the content of the scene while taking the vehicle’s motion into account. The system can detect pedestrians up to four times farther than the typical headlight range — even penetrating dense smoke. It actively detects people near the roadway, highlighting potential hazards and allowing drivers to have more time to react to them. 

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LDWS(Lanedeparture warning system)


Vehicles that are equipped with an LDW system will issue a warning if your vehicle starts to drift out of its lane. If you’re familiar with the audible warning, or looking for the visual cue on your dash, you’ll be able to take corrective action to prevent an accident.

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FCWS(Forward Collision Warning System)


By using laser, radar, or cameras, forward-collision warning systems monitor driving speed and objects ahead. If a collision may be imminent, the system gives the driver a warning that allows them time to take action and hopefully prevent an accident. 

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PCW(Pedestrian Collision Warning)


This system uses camera as sensor and utilizes image processing techniques to detect moving pedestrians. It raises warning signals timely and reinforces safety when driving.

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HBA (High Beam Assist)


The system that uses a light-seeking camera located in the rear view mirror housing to monitor the road for up to 1,000 metres ahead.To activate High-Beam Assistant the driver need only turn the headlight switch to the automatic position and leave the high beam/low beam headlight stalk pushed forward to high. A check control light in the instrument binnacle tells the driver High-Beam Assistant is operational.










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