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KR-102964241-B1 - REAR SIDE WARNING SYSTEM AND METHOD FOR VEHICLE

KR102964241B1KR 102964241 B1KR102964241 B1KR 102964241B1KR-102964241-B1

Abstract

A rear-side warning system for a vehicle according to the present invention is introduced, further comprising: a detection unit that detects location information and movement information of an external obstacle; a judgment unit that determines the type of external obstacle in the rear-side based on the location information and movement information detected by the detection unit; a setting unit that sets a rear-side warning range or a rear-side warning time based on the type of external obstacle determined by the judgment unit; and a control unit that controls the rear-side warning according to the rear-side warning range or rear-side warning time set by the setting unit.

Inventors

  • 강은석

Assignees

  • 현대모비스 주식회사

Dates

Publication Date
20260513
Application Date
20200831

Claims (20)

  1. A detection unit that detects location and movement information of external obstacles through a radar sensor; A judgment unit that determines the type of external obstacle in the rear side based on location information and movement information detected by a sensing unit; A setting unit that sets a rear-side warning range or rear-side warning time based on the type of external obstacle determined by the judgment unit; and A control unit that controls the rear side warning according to the rear side warning range or rear side warning time set in the setting unit; is included. A rear-side warning system for a vehicle characterized by a judgment unit obtaining individual beat frequency components proportional to distance through FFT operation of the detection signal of the detection unit, obtaining Doppler frequency components proportional to speed through FFT operation of the individual beat frequency components, and calculating the average frequency power of a warning area according to distance and speed from the obtained individual beat frequency components and Doppler frequency components.
  2. In claim 1, A rear-side warning system for a vehicle characterized by a detection unit detecting location information or movement information of an external obstacle located at the rear or side of the vehicle through a radar sensor mounted on the vehicle.
  3. In claim 1, A rear-side warning system for a vehicle characterized by a sensing unit detecting location information of an external obstacle through a detected detection point.
  4. In claim 3, The judgment unit forms a preset tracking range based on the initially detected detection point, and A rear-side warning system for a vehicle characterized by a judgment unit determining an external obstacle as a passenger car or a large vehicle based on a detection point located within a tracking range.
  5. In claim 4, A rear-side warning system for a vehicle characterized by a judgment unit that calculates and presets the detection count based on the detection information of the detection unit and the movement or location information of an external obstacle, and determines the external obstacle to be a large vehicle if the number of detections is greater than or equal to the preset detection count.
  6. In claim 4, A rear-side warning system for a vehicle characterized by a judgment unit determining an external obstacle to be a large vehicle if the number of detection points located within the tracking range is greater than or equal to a preset number.
  7. delete
  8. In claim 1, A rear-side warning system for a vehicle characterized by a judgment unit determining an external obstacle to be a large vehicle if the average frequency power of the warning area is greater than or equal to a preset power value.
  9. In claim 1, A rear-side warning system for a vehicle characterized by the setting unit expanding the rear-side warning range beyond a preset range when the judgment unit determines that an external obstacle is a large vehicle.
  10. In claim 1, A rear-side warning system for a vehicle characterized by the setting unit extending the rear-side warning time beyond a preset time when the judgment unit determines that an external obstacle is a large vehicle.
  11. A detection step for detecting location information and movement information of external obstacles through a radar sensor; A judgment step for determining the type of external obstacle in the rear side based on location information and movement information detected in the detection step; A setting step for setting a rear-side warning range or rear-side warning time based on the type of external obstacle determined in the judgment step; and A control step for controlling the rear side warning according to the rear side warning range or rear side warning time set in the setting step; is included, A rear-side warning method for a vehicle, characterized in that the judgment step obtains individual beat frequency components proportional to distance through FFT operation of the detection signal of the detection unit, obtains Doppler frequency components proportional to speed through FFT operation of the individual beat frequency components, and calculates the average frequency power of a warning area according to distance and speed from the obtained individual beat frequency components and Doppler frequency components.
  12. In claim 11, A rear-side warning method for a vehicle, characterized by a detection step that detects location information or movement information of an external obstacle located at the rear or side of the vehicle through a radar sensor mounted on the vehicle.
  13. In claim 11, A rear-side warning method for a vehicle characterized by a detection step that detects location information of an external obstacle through a detected detection point.
  14. In claim 13, The judgment phase forms a preset tracking range based on the initially detected detection point, and A rear-side warning method for a vehicle characterized by a judgment step in which an external obstacle is determined to be a passenger car or a large vehicle based on a detection point located within a tracking range.
  15. In claim 14, A rear-side warning method for a vehicle, characterized in that the judgment step calculates and pre-sets the detection count based on the detection information of the detection step and the movement information or location information of an external obstacle, and if the number of detections is greater than or equal to the pre-set detection count, the external obstacle is determined to be a large vehicle.
  16. In claim 14, A rear-side warning method for a vehicle characterized by a judgment step in which, if the number of detection points located within the tracking range is greater than or equal to a preset number, an external obstacle is determined to be a large vehicle.
  17. delete
  18. In claim 11, A rear-side warning method for a vehicle characterized by a judgment step in which, if the average frequency power of the warning area is greater than or equal to a preset power value, an external obstacle is determined to be a large vehicle.
  19. In claim 11, A rear-side warning method for a vehicle characterized by the setting step expanding the rear-side warning range beyond a preset range when the external obstacle is determined to be a large vehicle in the judgment step.
  20. In claim 11, A rear-side warning method for a vehicle characterized by extending the rear-side warning time beyond the preset time when the setting step determines that an external obstacle is a large vehicle.

Description

Rear Side Warning System and Method for Vehicle The present invention relates to a rear-side warning system for a vehicle, and specifically, to a technology that recognizes whether a vehicle located behind or to the side of a vehicle is a large vehicle and controls the rear-side warning system accordingly. A Blind Spot Warning (BSW) system refers to a system that detects other vehicles approaching the blind spots on the side or rear of the user's vehicle and provides a warning in advance. Most BSW systems use ultrasonic sensors or radar sensors to detect objects around the user's vehicle. However, conventional blind spot warning systems have a problem in that they cannot distinguish between passenger cars and large vehicles located to the side or rear of the vehicle, and in the case of large vehicles, they perceive them as being within the passenger car range even though the large vehicle remains located to the rear or side of the vehicle, causing the warning to terminate prematurely. The matters described above as background technology are intended only to enhance understanding of the background of the present invention and should not be construed as an acknowledgment that they constitute prior art already known to those skilled in the art. FIG. 1 is a configuration diagram of a rear-side warning system of a vehicle according to an embodiment of the present invention. FIGS. 2 to 5 are drawings illustrating cases where a large vehicle is not accurately detected by a conventional rear-side warning system. FIG. 6 is a diagram showing the detection of a large vehicle using a detection point in a rear-side warning system of a vehicle according to an embodiment of the present invention. FIGS. 7 to 10 are drawings of a rear-side warning system for a vehicle according to an embodiment of the present invention, which detects a large vehicle using average power within a position range and a speed range through FFT transformation. FIG. 11 is a flowchart of a rear-side warning method for a vehicle according to an embodiment of the present invention. Specific structural or functional descriptions of the embodiments of the present invention disclosed in this specification or application are merely illustrative for the purpose of explaining embodiments according to the present invention, and embodiments according to the present invention may be implemented in various forms and should not be interpreted as being limited to the embodiments described in this specification or application. Since embodiments according to the present invention may be subject to various modifications and may take various forms, specific embodiments are illustrated in the drawings and described in detail in this specification or application. However, this is not intended to limit embodiments according to the concept of the present invention to specific disclosed forms, and it should be understood that it includes all modifications, equivalents, and substitutions that fall within the spirit and scope of the present invention. Terms such as "first" and/or "second" may be used to describe various components, but said components should not be limited by said terms. For the sole purpose of distinguishing one component from another, for example, without departing from the scope of rights according to the concept of the present invention, the first component may be named the second component, and similarly, the second component may be named the first component. When it is stated that one component is "connected" or "connected" to another component, it should be understood that while it may be directly connected or connected to that other component, there may also be other components in between. Conversely, when it is stated that one component is "directly connected" or "directly connected" to another component, it should be understood that there are no other components in between. Other expressions describing the relationship between components, such as "between" and "exactly between," or "adjacent to" and "directly adjacent to," should be interpreted in the same way. The terms used herein are used merely to describe specific embodiments and are not intended to limit the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this specification, terms such as “comprising” or “having” are intended to specify the existence of the implemented features, numbers, steps, actions, components, parts, or combinations thereof, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof. Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as generally understood by those skilled in the art to which the present invention pertains. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with th