? Product Description ? Roadefend Forward Accessory Car Safety Alarm Device for Tour buses ???????ROADEFENDTM Lane Departure Warning (LDW.), an accessory of Drowsiness Warning System, is a lane tracking product based on machine vision. This product is combined to the host of RDT series Drowsiness Warning System, and therefore consists,together with the host, of ROADEFEND Driver’s Attention Comprehensive Assessment System. ??????? With the adoption of a forward-looking camera, this product is employed to detect a lane boundary on a roadway over which a vehicle is travelling ahead; to calculate a traveling direction of the vehicle as well as a lateral distance between the lane boundary and the vehicle, then it can determine a reasonable time for generating a departure warning. ???????? This product is also employed to judge whether the driver was or is drowsing or will drowse during the long period of driving by means of capacity of Lane Keeping Analysis (LKA).
Pressing lanes is dangerous ? ? Accessories of this product ? ???? ROADEFENDTM Lane Departure Warning (LDW.), an important part of Attention Comprehensive Assessment System, is composed of a high-sensitive forward-looking camera.
?? Note: LDW works only together with the host of RDT series Drowsiness Warning System.
?????????????????????????? Figure 1. Appearance of Lane Departure Warning Accessory ? Figure 2. A schematic diagram of Lane Departure Warning Accessory ? ??Product Characteristics:? ? ? ????This product is a forecaster who forecasts a lane departure behavior by calculating width and radian of the lane, traveling direction of the vehicle as well as the lateral distance between the lane boundary and the vehicle.
?????? This product is an all-rounder who adapts to multiple occasions except daytime and nighttime (with the help of dipped headlight and headlights on full beam of the vehicle).
?????? This product is a replacer who replaces cameras of traditional Car Digital Video Recorder just with a fast and simple installation.
? Product Specification:? ?

RDT-LDW
Type	product?model	T300-LDW	Minimum speed for working	commercial?vehicle	55km/h
	?engine	iFV1		passenger?vehicles	60km/h
Working time	Daytime	Yes	Function Selection	Audio alarm	Yes
	nighttime	Yes (with the help of dipped headlight and headlights on full beam)
Detecting index	Trigger a warning	The outer edge of the?front wheel is pressing inter edge of the lane line		I/O output	Yes
?	Detection rate	>95%		Model video output (optional)	NTSC/PAL (use cooperatively with Digital Video Recorder)
?	False detection rate	?< 1per-hour		Camera	?high-dynamic color camera
?industry?norm	?in?accordance with?GB/T 26773-2011 ? ?			Upload of 2G/3G data	Optional (use cooperatively with T300)
applicable lanes	? Frequently-used Lane marking line defined by GB5768		alarm?restraining	?Use brake ?
				?Use turn?signals

??anti sleep alarm ??Product Advantage:? ? ??High Quality & Reasonable Price ?????? (1) Share the same image processer with host of Drowsiness Warning System. ?????? (2) Play the rose of Car Digital Video Recorder. ?More accurate alarm ?????? ?(1) Judge whether the driver is abstracted or is drowsing with the aid of information coming from host of Drowsiness Warning System to determine alarm degree. ???? ?(2) assist the host of Drowsiness Warning System to forecast whether the driver is drowsing. ?Easy installation ??????(1) Improve installation efficiency with adoption of self-calibration function by lowering installation accuracy. ? ??? ?Company Information:? ? ????? Roadefend Vision Technology (Shanghai) Co., Ltd is a high-tech company which devotes to apply image processing and computer vision technology in intelligent vehicles and transportation. We have a very professional R & D team and the brief engineer who knows advanced tools and testing methods of circuit design well because of his years of development experience about auto electric parts. Meanwhile, our company always strictly implement quality management system to ensure good quality and performance products. ????? Roadefend always insist on the core technology as base and growth with customers as service purpose to provide competitive & stablehardware and software products, so that we can face on different customer demands of different markets. ????? In 2013 we launched the first driver fatigue detection product with complete intellectual property rights, it has reached the leading level with its high performance indicators in the same products in national market. This new has been used biometric authentication technology based on image, which gets the facial image of driver by non-contact way, analyzes drowsiness degree of driver by AI programming and then it starts to issue warnings once the driver is going to sleep. As you know, this kind of drowsiness warning product can offer several solutions, so it doesn’t operate individually, but also can be used with in-vehicle networking devices. Also, it can be configured with GPS/3G communication modules to meet many different kinds of market demands. ????? ?In 2014 we launched lane departure warning part, which is a lane tracking product based on machine vision. And it’s usually used with Roadefend drowsiness warning system to be the Roadefend attention comprehensive evaluation system of driver. So this kind of lane departure warning can remind the driver to pay attention in time, when he or she is drifting off the lane unconsciously and slowly. ????? Roadefend will continue to develop and launch more innovative and economic vehicle active safety products with services of international advanced level in near future. Let’s look forward to get a win-win future. ? ??Packing:? ??? We usually?use cartons to pack with good quality of gift boxes (box is made of ?high-hardness and proof-compression grey board paper). ? ??Production & Inspection: ?vehicle anti sleep alar ? ??Application Case:? ? ?eep alar ? ?Certification:? ? ?????? ? ?Exhibitions & Pictures with customers:? ? Contact us:? ?
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