Vehicular collision warning system
First Claim
1. A vehicular collision warning system, which is used to detect barriers in at least one blind spot of a driver of a large-size vehicle, comprising:
- at least one image capture device installed on said large-size vehicle and used to capture images of said at least one blind spot;
a processing unit electrically connected to said at least one image capture device for identifying at least one barrier from one or more captured images, said barrier having an upper speed limit defined as a preset speed, calculating a speed and a displacement of each of said at least one barrier according to positional change of each of said at least one barrier with respect with time, defining at least one attention area in images of said at least one blind spot, and sending out at least one alert-triggering signal when determining that one of said at least one barrier has said calculated displacement and said calculated speed lower than said preset speed in one of said at least one attention area; and
at least one alert device electrically connected to said processing unit for receiving said alert-triggering signal and generating an alert signal of sound, light or displayable alert pictures;
wherein said processing unit calculates informational quantities of traffic lanes of each of said images of said at least one blind spot, calculates difference of informational quantities of said traffic lanes of every two adjacent said images, compares a curve of said difference with a preset threshold, determines a position where said difference exceeds said preset threshold to be a position of a barrier, and determines positions where said difference is below said preset threshold to be a background.
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Accused Products
Abstract
A vehicular collision warning system comprises at least one image capture device capturing images of blind spots, a processing unit receiving the images of blind spots from the image capture device, and at least one alert device. The processing unit identifies at least one barrier from the images and calculates the speed and transverse displacement of the barrier according to the positional change with respect to time. The processing unit presets at least one attention area on the image, estimates whether the barrier will appear in the attention area, sends out an alert-triggering signal to trigger the alert devices to generate sound, light, or pictures to warn the driver early. Cooperating with the speed sensor, brake system and turn light system, the vehicular collision warning system can trigger different alert signals according to the grading of danger to actively warn the driver early.
20 Citations
18 Claims
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1. A vehicular collision warning system, which is used to detect barriers in at least one blind spot of a driver of a large-size vehicle, comprising:
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at least one image capture device installed on said large-size vehicle and used to capture images of said at least one blind spot; a processing unit electrically connected to said at least one image capture device for identifying at least one barrier from one or more captured images, said barrier having an upper speed limit defined as a preset speed, calculating a speed and a displacement of each of said at least one barrier according to positional change of each of said at least one barrier with respect with time, defining at least one attention area in images of said at least one blind spot, and sending out at least one alert-triggering signal when determining that one of said at least one barrier has said calculated displacement and said calculated speed lower than said preset speed in one of said at least one attention area; and at least one alert device electrically connected to said processing unit for receiving said alert-triggering signal and generating an alert signal of sound, light or displayable alert pictures; wherein said processing unit calculates informational quantities of traffic lanes of each of said images of said at least one blind spot, calculates difference of informational quantities of said traffic lanes of every two adjacent said images, compares a curve of said difference with a preset threshold, determines a position where said difference exceeds said preset threshold to be a position of a barrier, and determines positions where said difference is below said preset threshold to be a background. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A vehicular collision warning system, which is used to detect barriers in at least one blind spot of a driver of a large-size vehicle, comprising:
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at least one image capture device installed on said large-size vehicle and used to capture images of said at least one blind spot; a processing unit electrically connected to said at least one image captured device for identifying at least one barrier from one or more captured images, said barrier having an upper speed limit defined as a preset speed, calculating a speed and a displacement of each of said at least one barrier according to positional change of each of said at least one barrier with respect with time, defining at least one attention area in images of said at least one blind spot, and sending out at least one alert-triggering signal when determining that one of said at least one barrier has said calculated displacement and said calculated speed lower than said preset speed in one of said at least one attention area; and at least one alert device electrically connected to said processing unit for receiving said alert-triggering signal and generating an alert signal of sound, light or displayable alert pictures; wherein a front side, a left side and a right side of said large-size vehicle respectively have at least one said blind spot; said at least one image capture device includes a first image capture device installed in a front portion of said large-size vehicle and used to capture images of a first blind spot at said front side of said large-size vehicle, a second image capture device installed in a left portion of said large-size vehicle and used to capture images of a second blind spot at said left side of said large-size vehicle, and a third image capture device installed in a right portion of said large-size vehicle and used to capture images of a third blind spot at said right side of said vehicle; for said first blind spot at said front side of said large-size vehicle, said displacement is a transverse displacement; and for said second and third blind spots at said left side and said right side respectively of said large-size vehicle, said displacement is a longitudinal displacement; and said at least one attention area defined by said processing unit includes a first attention area defined in an image of said first blind spot, a second attention area defined in an image of said second blind spot, and a third attention area defined in an image of said third blind spot; said at least one alert device includes a first alert zone corresponding to said first attention area, a second alert zone corresponding to said second attention area, and a third alert zone corresponding to said third attention area; and said first alert zone, said second alert zone and said third alert zone use said light or displayable alert pictures to indicate which of said attention areas where said barrier exists. - View Dependent Claims (16, 17, 18)
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Specification