Patent Publication Number: US-2009224897-A1

Title: Vehicle vision system

Description:
BACKGROUND OF THE PRESENT INVENTION 
     1. Field of the Invention 
     The present invention relates to a vision system, more particularly to an integrated vision system applied for vehicles. 
     2. Description of Related Invention 
     A conventional vehicle vision device includes some disadvantages as follows. Firstly, such device is unable to detect the lane departure and activate the warning signal or monitor the safety distance from the front end. Secondly, the reversing vision captured from the video device is merely displayed on the monitor; accordingly the driver could only analyze the reversing angle by their own experience without the indication of direction reference. Thirdly, there is no event data recording apparatus installed to record the information related to the vehicle condition in the traffic accident or traffic offense. 
     SUMMARY OF THE PRESENT INVENTION 
     In view of the foregoing disadvantages, the present invention provides a vehicle vision system, comprising a central processing unit, a front video device, a reversing video device and an event data recorder. The front vision device supports detecting the lane departure of the vehicle and the safety distance so as to activate the warning signal accordingly. The reversing vision device coupled with a steering angle sensor enables an auxiliary drawing line according to the spinning angle of the steering wheel being displayed on the monitor for direction indication. An event data recorder equipped with acceleration sensor device serves to memorize the image information related to the vehicle condition at the collision scene. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a system flow diagram of the preferred embodiment of the present invention. 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
     Referring to  FIG. 1  of the drawings, the present invention relates to a vehicle vision system, comprising a central processing unit ( 10 ), a front video device ( 20 ), a reversing video device ( 30 ), and an event data recorder ( 40 ). The central processing unit ( 10 ) is mounted inside the vehicle for analyzing the information of the traffic condition captured from the front video device ( 20 ), the reversing video device ( 30 ) and the event data recorder ( 40 ). The front vision device ( 20 ) is mounted to the front area of the vehicle enabling the activation of the warning signal when the lane departure happens or being too close form the front vehicle so as to avoid from the collision. The reversing video device ( 30 ) is installed at the vehicle rear with a steering angle sensor ( 31 ) connected inside to assist the driver reversing the vehicle, wherein an auxiliary line according to the reversing angle is displayed on the monitor ( 20 ) equipped in front of the driver. The event data recorder ( 40 ) with an acceleration sensor ( 41 ) coupling to enables to capture the image information related to the vehicle&#39;s condition in the traffic accident automatically or manually. 
     The front video device ( 20 ) is used for detecting the raw rate of the lane departure and transmitting the information regarding driving speed and the distance of the front vehicle into the central processing unit ( 10 ). If the vehicle departures from the lane or gets too close from the front vehicle, the central processing unit ( 10 ) activates the warning device ( 11 ) to make the alert sound. The steering angle sensor ( 31 ) coupled to the reversing video device ( 30 ) enables to calculate the spinning angle of the wheel and convert into a drawing line displayed on the monitor ( 50 ) so as to provide the direction indication for the driver. The event data recorder ( 40 ) with the acceleration sensor ( 41 ) installed inside is provided for memorizing the image information of the vehicle&#39;s condition in a traffic accident or traffic offense at the scene.