Vehicle safety system

• US 10,377,380 B2
• Filed: 01/09/2017
• Issued: 08/13/2019
• Est. Priority Date: 01/09/2017
• Status: Active Grant

• Current Assignee: DENSO Corporation, Denso International America Incorporated (DENSO Corporation)
• Original Assignee: Denso International America Incorporated (DENSO Corporation)
• Inventors: Williams, Matthew, Sato, Miki
• Primary Examiner(s): McPherson, James M
• Application Number:
  US15/401,784
• Publication Number:
  US 20180194350A1
• Time in Patent Office: 946 Days
• Field of Search: None
• CPC Class Codes: B60W 10/06 including control of combustion engines
• CPC Class Codes: B60W 10/18 including control of braking systems
• CPC Class Codes: B60W 2420/403 Image sensing, e.g. optical camera
• CPC Class Codes: B60W 2420/408 Radar; Laser, e.g. lidar
• CPC Class Codes: B60W 2420/54 Audio sensitive means, e.g. ultrasound
• CPC Class Codes: B60W 2510/18 Braking system
• CPC Class Codes: B60W 2520/10 Longitudinal speed
• CPC Class Codes: B60W 2552/05 Type of road, e.g. motorways, local streets, paved or unpaved roads
• CPC Class Codes: B60W 2552/10 Number of lanes
• CPC Class Codes: B60W 2554/80 Spatial relation or speed relative to objects
• CPC Class Codes: B60W 2710/18 Braking system
• CPC Class Codes: B60W 2720/10 Longitudinal speed
• CPC Class Codes: B60W 2754/10 Spatial relation or speed relative to objects
• CPC Class Codes: B60W 30/143 Speed control B60W30/16 takes precedence
• CPC Class Codes: G01S 15/931 of land vehicles
• CPC Class Codes: G01S 17/58 Velocity or trajectory determination systems; Sense-of-movement determination systems
• CPC Class Codes: G01S 17/931 of land vehicles
• CPC Class Codes: G01S 2013/9315 Monitoring blind spots
• CPC Class Codes: G01S 2013/9321 Velocity regulation, e.g. cruise control
• CPC Class Codes: G01S 2013/9323 Alternative operation using light waves
• CPC Class Codes: G01S 2013/9324 : Alternative operation using ultrasonic waves
• CPC Class Codes: G08G 1/167 : Driving aids for lane monitoring, lane changing, e.g. blind spot detection

Abstract

A blind spot safety system for a subject vehicle. The safety system includes a blind spot monitoring module that detects when a secondary vehicle is operating in a blind spot of the subject vehicle. A vehicle control module controls speed of the subject vehicle. When the blind spot monitoring module detects that the secondary vehicle is operating in the blind spot of the subject vehicle, the blind spot monitoring module instructs the vehicle control module to increase or decrease speed of the subject vehicle to move the subject vehicle relative to the secondary vehicle such that the secondary vehicle is not in the blind spot of the subject vehicle.

Claims

1. A blind spot safety system for a subject vehicle comprising:

a blind spot monitoring module that detects when a secondary vehicle is operating in a blind spot of the subject vehicle;

a vehicle control module that controls speed of the subject vehicle; and

a road-type detection module that detects a road type of a road that the subject vehicle is traveling on by detecting at least one of the following;

number of lanes of the road, whether the road has stop signs, and whether the road has traffic lights;

wherein the road-type detection module activates the blind spot monitoring module when the road-type detection module detects that the subject vehicle is traveling on a highway and traveling above a predetermined threshold speed;

wherein the road-type detection module deactivates, or does not activate, the blind spot monitoring module when the road-type detection module detects that the subject vehicle is not traveling on a highway, or traveling on a highway below the predetermined threshold speed;

wherein when the blind spot monitoring module detects that the secondary vehicle is operating in the blind spot of the subject vehicle, the blind spot monitoring module instructs the vehicle control module to increase or decrease speed of the subject vehicle from a set cruise control speed as long as the blind spot monitoring module detects the secondary vehicle in the blind spot to move the subject vehicle relative to the secondary vehicle such that the secondary vehicle is not in the blind spot of the subject vehicle, and the vehicle control module returns the speed of the vehicle to the set cruise control speed when the blind spot monitoring module no longer detects the secondary vehicle in the blind spot; and

wherein the blind spot monitoring module detects when the secondary vehicle is operating in the blind spot of the subject vehicle, and speed of the secondary vehicle, with a secondary vehicle detection system including at least one of radar, sonar, and LIDAR.

2. The blind spot safety system of claim 1, wherein the vehicle control module controls speed of the subject vehicle by controlling at least one of brakes and engine speed of the subject vehicle.

3. The blind spot safety system of claim 1, wherein when the blind spot monitoring module detects that the secondary vehicle is operating in the blind spot of the subject vehicle, the blind spot monitoring module instructs the vehicle control module to increase or decrease the speed of the subject vehicle from a set cruise control speed to move the subject vehicle such that the secondary vehicle is no longer in the blind spot of the subject vehicle.

4. The blind spot safety system of claim 1, wherein the blind spot monitoring module instructs the vehicle control module to increase or decrease the speed of the subject vehicle from the set cruise control speed only when speed of the secondary vehicle is substantially similar to speed of the subject vehicle.

5. The blind spot safety system of claim 1, wherein the blind spot monitoring module instructs the vehicle control module to increase or decrease the speed of the subject vehicle from the set cruise control speed only when speed of the secondary vehicle is the same as, or within about 1-4 mph of the speed of the subject vehicle.

6. The blind spot safety system of claim 1, wherein the blind spot monitoring module instructs the vehicle control module to reduce a speed of the subject vehicle from the set cruise control speed when the speed of the secondary vehicle is greater than the set cruise control speed.

7. The blind spot safety system of claim 1, wherein the blind spot monitoring module instructs the vehicle control module to increase the speed of the subject vehicle from the set cruise control speed when the speed of the secondary vehicle is not greater than the set cruise control speed.

8. The blind spot safety system of claim 1, wherein the blind spot monitoring module instructs the vehicle control module to increase the speed of the subject vehicle from the set cruise control speed when the speed of the secondary vehicle is not greater than the set cruise control speed.

9. A method for changing a subject vehicle'"'"'s position relative to a secondary vehicle when the secondary vehicle is in a blind spot of the subject vehicle, the method comprising:

detecting, with a road-type detection module, a road-type of a road that the subject vehicle is traveling on by detecting at least one of the following;

number of lanes of the road, whether the road has stop signs, and whether the road has traffic lights;

when the road-type detection module detects that the subject vehicle is traveling on a highway and traveling above a pre-determined threshold speed, the road-type detection module activates a blind spot monitoring module that detects when the secondary vehicle is operating in a blind spot of the subject vehicle;

when the road-type detection module detects that the subject vehicle is not traveling on a highway, or traveling on a highway below the predetermined threshold speed, the road-type detection module deactivates, or does not activate, the blind spot monitoring module;

when the blind spot monitoring module detects that the secondary vehicle is operating in the blind spot of the subject vehicle, the blind spot monitoring module instructs a vehicle control module to increase or decrease speed of the subject vehicle from a set cruise control speed to move the subject vehicle relative to the secondary vehicle so that the secondary vehicle is not in the blind spot of the subject vehicle; and

the vehicle control module returns the speed of the subject vehicle to the set cruise control speed when the blind spot monitoring module no longer detects the secondary vehicle in the blind spot;

wherein the blind spot monitoring module detects when the secondary vehicle is operating in the blind spot of the subject vehicle, and speed of the secondary vehicle, with a secondary vehicle detection system including at least one of radar, sonar, and LIDAR.

10. The method of claim 9, further comprising increasing or decreasing speed of the subject vehicle by controlling at least one of brakes and engine speed of the subject vehicle.

11. The method of claim 9, further comprising increasing or decreasing speed of the subject vehicle from the set cruise control speed to move the subject vehicle relative to the secondary vehicle such that the secondary vehicle is not in the blind spot of the subject vehicle.

12. The method of claim 9, further comprising increasing or decreasing speed of the subject vehicle from the set cruise control speed to move the subject vehicle relative to the secondary vehicle such that the secondary vehicle is not in the blind spot of the subject vehicle only when speed of the secondary vehicle is substantially similar to speed of the subject vehicle.

13. The method of claim 9, further comprising increasing or decreasing speed of the subject vehicle from the set cruise control speed to move the subject vehicle relative to the secondary vehicle such that the secondary vehicle is not in the blind spot of the subject vehicle only when speed of the secondary vehicle is the same as, or within about 1-4 mph of the subject vehicle.

14. The method of claim 9, further comprising reducing the speed of the subject vehicle from the set cruise control speed when a speed of the secondary vehicle is greater than the set cruise control speed.

15. The method of claim 9, further comprising increasing the speed of the subject vehicle from the set cruise control speed when the speed of the secondary vehicle is not greater than the set cruise control speed.

16. The method of claim 9, further comprising increasing the speed of the subject vehicle from the set cruise control speed when the speed of the secondary vehicle is not greater than the set cruise control speed.