Method for protecting alarm errors in ultrasonic obstacle detection for a vehicle and Ultrasonic Obstacle Detection Device for protecting alarm errors in a vehicle

摘要

one embodiment of the present invention is to prevent false alarms caused by noise (noise) relates to a method and a false alarm object detection device for preventing a vehicle for ultrasound . Specifically , one embodiment of the present invention using a secondary frequency , or using at least one of the amplitude and period of the reference frequency may determine the influence of the noise around the vehicle when the object detection . Thus, one embodiment of the present invention is to remove the case , by determining that the effect of the noise before the alarm , false alarms caused a phenomenon that the ultrasonic object recognized as the reference frequency and the sensing device is close to the object and the vehicle by the same noise there . ;