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Following vehicle detection and alarm device

  • US 10,589,669 B2
  • Filed: 08/10/2016
  • Issued: 03/17/2020
  • Est. Priority Date: 09/24/2015
  • Status: Active Grant
First Claim
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1. A following vehicle detection and alarm method, the method comprising:

  • imaging an area behind a vehicle of interest with a camera at a predetermined frame rate;

    counting the number of frames after another vehicle is shot in a shooting range of the camera until the another vehicle reaches a first predetermined position behind the vehicle of interest;

    outputting an alarm instruction at a first time that varies based on the counted number of frames, for notifying the driver of the vehicle of interest that the another vehicle is approaching; and

    ,performing a predetermined alarm operation for the driver when the alarm instruction is output, wherein the predetermined alarm operation is performed at a second time after the alarm instruction is output; and

    ,wherein the first time is set such that the predetermined alarm operation is performed when the another vehicle passes a second predetermined position closer to the vehicle of interest than the first predetermined position.

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