Methods and systems for blind spot monitoring with dynamic detection range

• US 9,947,226 B2
• Filed: 04/12/2016
• Issued: 04/17/2018
• Est. Priority Date: 04/12/2016
• Status: Active Grant

• Current Assignee: DENSO Corporation, Denso International America Incorporated (DENSO Corporation)
• Original Assignee: DENSO Corporation, Denso International America Incorporated (DENSO Corporation)
• Inventors: Lai, Ting-Yu, Sato, Miki, Sun, Bo
• Primary Examiner(s): KING, CURTIS J
• Application Number:
  US15/096,416
• Publication Number:
  US 20170294128A1
• Time in Patent Office: 735 Days
• Field of Search: None
• CPC Class Codes: B60W 2520/10 Longitudinal speed
• CPC Class Codes: B60W 2556/50 of positioning data, e.g. GPS [Global Positioning System] data
• CPC Class Codes: B60W 30/095 Predicting travel path or likelihood of collision
• CPC Class Codes: B60W 40/04 Traffic conditions
• CPC Class Codes: B60W 50/14 Means for informing the driver, warning the driver or prompting a driver intervention
• CPC Class Codes: G06V 20/56 exterior to a vehicle by using sensors mounted on the vehicle
• CPC Class Codes: G06V 20/58 Recognition of moving objects or obstacles, e.g. vehicles or pedestrians; Recognition of traffic objects, e.g. traffic signs, traffic lights or roads
• CPC Class Codes: G08G 1/166 for active traffic, e.g. moving vehicles, pedestrians, bikes
• CPC Class Codes: G08G 1/167 Driving aids for lane monitoring, lane changing, e.g. blind spot detection

Abstract

A system and method are provided and include a blind spot monitoring system with a blind spot sensor that monitors a focus area within a blind spot detection area of a subject vehicle and that generates an alert when a secondary vehicle is detected within the focus area of the blind spot detection area. A controller receives data corresponding to an amount of traffic at a location of the subject vehicle, determines the level of traffic at the location of the subject vehicle based on the data, and reduces the focus area when the level of traffic is greater than a predetermined threshold.

Claims

1. A system comprising:

a blind spot monitoring system including a blind spot sensor that monitors a focus area within a blind spot detection area of a subject automobile and generates an alert when a secondary automobile is detected within the focus area of the blind spot detection area;

a controller that receives data corresponding to an amount of traffic at a location of the subject automobile, determines a level of traffic at the location of the subject automobile based on the data, and reduces the focus area in response to the level of traffic being greater than a predetermined threshold in heavy traffic conditions;

wherein the focus area is reduced from a first focus area including a rear and a lateral side of the subject automobile to a second focus area including only the lateral side of the subject automobile, the second focus area being smaller than the first focus area, and the second focus area eliminating a rear of the first focus area.

2. The system of claim 1, further comprising an automobile speed sensor that generates automobile speed data corresponding to a speed of the subject automobile and wherein the controller determines the level of traffic based on the automobile speed data.

3. The system of claim 1, wherein the blind spot sensor generates surrounding object data and wherein the controller determines the level of traffic based on the surrounding object data.

4. The system of claim 1, further comprising a global positioning system that receives the data corresponding to the amount of traffic at the location of the subject automobile and communicates the data corresponding to the amount of traffic at the location of the subject automobile to the controller and wherein the controller determines the level of traffic based on the data received from the global positioning system.

5. The system of claim 1, further comprising a global positioning system that determines the location of the subject automobile, receives location data for a plurality of surrounding automobiles to the subject automobile, generates the data corresponding to the amount of traffic at the location of the subject automobile based on the location data for the plurality of surrounding automobiles, and communicates the data corresponding to the amount of traffic at the location of the subject automobile to the controller, wherein the controller determines the level of traffic based on the data received from the global positioning system.

6. The system of claim 1, wherein the alert includes at least one of a visual alert, an audible alert, and a haptic alert to a driver of the subject automobile.

7. A method comprising:

monitoring a focus area within a blind spot detection area of a subject automobile with a blind spot sensor of a blind spot monitoring system;

generating an alert, with the blind spot monitoring system, when a secondary automobile is detected within the focus area of the blind spot detection area;

receiving, with a controller, data corresponding to an amount of traffic at a location of the subject automobile;

determining, with the controller, a level of traffic at the location of the subject automobile based on the data; and

reducing, with the controller, the focus area in response to the level of traffic being greater than a predetermined threshold in heavy traffic conditions, by reducing the focus area from a first focus area including a rear and a lateral side of the subject automobile to a second focus area including only the lateral side of the subject automobile, the second focus area being smaller than the first focus area, and the second focus area eliminating a rear of the first focus area.

8. The method of claim 7, further comprising:

generating, with a automobile speed sensor, automobile speed data corresponding to a speed of the subject automobile;

wherein the controller determines the level of traffic based on the automobile speed data.

9. The method of claim 7, wherein the blind spot sensor generates surrounding object data and wherein the controller determines the level of traffic based on the surrounding object data.

10. The method of claim 7, further comprising:

receiving, with a global positioning system, the data corresponding to the amount of traffic at the location of the subject automobile; and

communicating, with the global positioning system, the data corresponding to the amount of traffic at the location of the subject automobile to the controller;

wherein the controller determines the level of traffic based on the data received from the global positioning system.

11. The method of claim 7, further comprising:

determining, with a global positioning system, the location of the subject automobile;

receiving, with the global positioning system, location data for a plurality of surrounding automobiles to the subject automobile;

generating, with the global positioning system, the data corresponding to the amount of traffic at the location of the subject automobile based on the location data for the plurality of surrounding automobiles; and

communicating, with the global positioning system, the data corresponding to the amount of traffic at the location of the subject automobile to the controller;

wherein the controller determines the level of traffic based on the data received from the global positioning system.

12. The method of claim 7, wherein the alert includes at least one of a visual alert, an audible alert, and a haptic alert to a driver of the subject automobile.

13. A system comprising:

a blind spot monitoring system including a blind spot sensor that monitors a focus area within a blind spot detection area of a subject automobile and generates an alert when a secondary automobile is detected within the focus area of the blind spot detection area;

a global positioning system that receives data corresponding to an amount of traffic at a location of the subject automobile; and

a controller that receives the data corresponding to the amount of traffic at the location of the subject automobile from the global positioning system, determines a level of traffic at the location of the subject automobile based on the data, and reduces the focus area in response to the level of traffic being greater than a predetermined threshold in heavy traffic conditions;

wherein the focus area is reduced by reducing a transmit power level of the blind spot sensor and reduced from a first focus area including a rear and a lateral side of the subject automobile to a second focus area including only the lateral side of the subject automobile, the second focus area being smaller than the first focus area, and the second focus area eliminating the rear of the first focus area.

14. The system of claim 13, further comprising an automobile speed sensor that generates automobile speed data corresponding to a speed of the subject automobile and wherein the controller determines the level of traffic based on the automobile speed data in addition to the data corresponding to the amount of traffic at the location of the subject automobile from the global positioning system.

15. The system of claim 13, wherein the blind spot sensor generates surrounding object data and wherein the controller determines the level of traffic based on the surrounding object data in addition to the data corresponding to the amount of traffic at the location of the subject automobile from the global positioning system.

16. The system of claim 13, wherein the global positioning system receives location data for a plurality of surrounding automobiles-to the subject automobile, and wherein the controller determines the level of traffic based on the location data received from the global positioning system in addition to the data corresponding to the amount of traffic at the location of the subject automobile from the global positioning system.

17. The system of claim 13, wherein the alert includes at least one of a visual alert, an audible alert, and a haptic alert to a driver of the subject automobile.