Static barrier judgment method for ultrasonic blind zone detection
A determination method and obstacle technology, applied in the re-radiation of sound waves, radio wave measurement systems, measurement devices, etc., can solve problems such as functional failure, vehicle lane-changing side collision accidents, and increased blind spots in rearview mirrors.
Active Publication Date: 2015-05-06
TUNG THIH ELECTRONICS (XIAMEN) CO LTD
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Problems solved by technology
[0002] The blind area of the vehicle rearview mirror can easily lead to the occurrence of side collision accidents when the vehicle changes lanes. At the same time, various objective environmental factors can also cause the blind area of the rearview mirror to increase or fail, such as rainy and foggy days, dim lights at night and other harsh environmental conditions
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[0021] In order to further explain the technical solution of the present invention, the present invention will be described in detail below through specific examples.
[0022] The invention relates to a static obstacle judgment method for ultrasonic blind spot detection, comprising:
[0023] ① A front probe 1 and a rear probe 2 are respectively provided at the front and rear ends of the side body of the vehicle 100. The detection angle α of the front probe 1 is smaller than the detection angle β of the rear probe 2. The detection area B of 2 does not overlap; for details, please refer to figure 1 As shown; in order to detect the blind spots on the left and right sides of the vehicle respectively, both sides of the vehicle 100 can be provided with a front probe 1 and a rear probe 2; preferably, during actual detection, the detection direction of the front probe 1 Perpendicular to the side of the vehicle, the detection direction of the rear probe 2 is inclined to the side of th...
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The invention discloses a static barrier judgment method for ultrasonic blind zone detection. The method includes that 1 a front probe and a back probe are respectively arranged at the front end and the back end of an automobile lateral body, the detection angle of the front probe is smaller than the detection angle of the back probe, and the detection area of the front probe is not overlapped with the detection area of the back probe; and 2 the front probe and the back probe are respectively used for detecting the corresponding detection area in real time. A. If a barrier detected by the front probe is detected by the back probe in preset time, and the back probe detects that the barrier is in the away state, the barrier is judged to be a non continuous static barrier. B. If the front probe still detects the barrier when the back probe detects the barrier, the distance between the front probe and the barrier is larger than set distance, and the distance between the back probe and the barrier is larger than the distance between the front probe and the barrier, the barrier is judged to be a continuous static barrier. The method can comprehensively and effectively judge the static barrier and achieves the aim of avoiding error judgment and leakage judgment.
Description
technical field [0001] The invention relates to the field of ultrasonic blind zone detection, in particular to a static obstacle determination method for ultrasonic blind zone detection. Background technique [0002] The blind area of the vehicle rearview mirror can easily lead to the occurrence of side collision accidents when the vehicle changes lanes. At the same time, various objective environmental factors can also cause the blind area of the rearview mirror to increase or the function to fail, such as rainy and foggy days, dim lights at night and other harsh environmental conditions. [0003] As a result, the blind spot detection system based on ultrasonic technology has gradually begun to be popularized and applied, mainly to remind the driver of the moving obstacles in the blind spot of the rearview mirror during the lane change process; for stationary obstacles, such as trees, Railings, walls, flowers and parked vehicles, etc. need to be judged and notified to t...
Claims
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IPC IPC(8): G01S15/93
Inventor 严日骞黄坤元张小贤王瑞宝陈锋
Owner TUNG THIH ELECTRONICS (XIAMEN) CO LTD