Potential collision detection and parking aid system

• US 6,784,791 B2
• Filed: 07/25/2002
• Issued: 08/31/2004
• Est. Priority Date: 07/25/2002
• Status: Expired due to Term

• Current Assignee: Ford Global Technologies, LLC (Ford Motor Company)
• Original Assignee: Ford Global Technologies, LLC (Ford Motor Company)
• Inventors: Kwiecinski, Robert, Prakah-Asante, Kwaku O., Rao, Manoharprasad K., Strumolo, Gary Steven
• Primary Examiner(s): PHAM, TOAN NGOC
• Application Number:
  US10/064,550
• Publication Number:
  US 20040017287A1
• Time in Patent Office: 768 Days
• Field of Search: 340/435, 340/436, 340/438, 340/441, 340/933, 340/935, 340/936, 340/938, 701/301
• US Class Current: 340/435
• CPC Class Codes: B60Q 1/535 to prevent rear-end collisions, e.g. by indicating safety distance at the rear of the vehicle
• CPC Class Codes: B60Q 9/006 using a distance sensor
• CPC Class Codes: B60Q 9/008 for anti-collision purposes
• CPC Class Codes: B60R 21/013 including means for detecting collisions, impending collisions or roll-over
• CPC Class Codes: B60R 21/0134 responsive to imminent contact with an obstacle , e.g. using radar systems
• CPC Class Codes: G01S 2013/9314 Parking operations

Abstract

A collision warning and countermeasure system (10) for an automotive vehicle (12) is provided. The system (10) includes a velocity sensor (18) that generates a vehicle velocity signal. A multi-mode object detection sensor (28) generates an object detection signal. The multi-mode object detection sensor (28) operates in a detection mode in response to the vehicle velocity signal. A controller (26) is electrically coupled to the velocity sensor (18) and the multi-mode object detection sensor (28) and generates a countermeasure signal in response to the object detection signal. A method of performing the same is also provided.

Claims

1. A collision warning and countermeasure system for an automotive vehicle comprising:

a velocity sensor generating a vehicle velocity signal;

at least one multi-mode object detection sensor generating at least one object detection signal, said at least one multi-mode object detection sensor operating in a detection mode in response to said vehicle velocity signal; and

a controller electrically coupled to said velocity sensor and said at least one multi-mode object detection sensor and generating a countermeasure signal in response to said at least one object detection signal;

wherein at least one of said at least one multi-mode object detection sensor has a plurality of operating modes corresponding to a plurality of detection ranges.

2. A system as in claim 1 wherein said controller generates a detection mode signal in response to said vehicle velocity signal and said at least one multi-mode object detection sensor operates in said detection mode in response to said detection mode signal.

3. A system as in claim 1 wherein said at least one multi-mode object detection sensor operates in a parking aid mode when the vehicle is traveling at a velocity approximately greater than 0 kph and approximately less than or equal to 10 kph.

4. A system as in claim 3 wherein said at least one multi-mode object detection sensor operates in a parking aid mode when the vehicle is traveling in a forward direction.

5. A system as in claim 1 wherein said at least one multi-mode object detection sensor operates in a default mode when the vehicle is stationary or is traveling at a velocity approximately greater than 10 kph.

6. A system as in claim 1 further comprising a transmission gear sensor generating a gear signal, and wherein said at least one multi-mode object detection sensor operates in a parking aid mode in response to said gear signal.

7. A system as in claim 1 wherein said at least one multi-mode object detection sensor comprises:

a first multi-mode object detection sensor operating in a parking aid mode; and

a second multi-mode object detection sensor operating in a default mode.

8. A system as in claim 7 wherein said first multi-mode object detection sensor operates in a parking aid mode and said second multi-mode object detection sensor operates in a default mode when the vehicle is in a reverse gear.

9. A system as in claim 1 wherein said controller determines object range, object velocity, and object bearing relative to the vehicle in response to said vehicle velocity signal and said at least one object detection signal operating in a default mode.

10. A system as in claim 1 wherein said controller determines object velocity and object acceleration relative to the vehicle in response to said vehicle velocity signal and said at least one object detection signal operating in a default mode.

11. A system as in claim 1 wherein said controller determines intercept time in response to said vehicle velocity signal and said at least one object detection signal operating in a default mode.

12. A system as in claim 1 wherein said controller generates a countermeasure signal in response to said vehicle velocity signal and said at least one object detection signal operating in default mode.

13. A system as in claim 1 wherein said countermeasure signal comprises at least one of collision warning information, default mode countermeasure information, and parking aid countermeasure information.

14. A system as in claim 1 wherein said at least one multi-mode object detection sensor detects objects up to approximately five meters forward of the vehicle and detects objects in a lateral direction while in a parking aid mode.

15. A system as in claim 1 wherein said at least one multi-mode object detection sensor detects objects up to approximately five meters rearward of the vehicle and detects objects in a lateral direction while in a parking aid mode.

16. A system as in claim 1 wherein said at least one multi-mode object detection sensor detects objects forward and rearward of the vehicle at distances relative to the vehicle of greater than approximately five meters while in a default mode.

17. A collision warning and countermeasure system for an automotive vehicle comprising:

a velocity sensor generating a vehicle velocity signal;

a transmission gear sensor generating a gear signal;

at least one multi-mode object detection sensor generating at least one object detection signal, said at least one multi-mode object detection sensor operating in a detection mode in response to a detection mode signal; and

a controller electrically coupled to said velocity sensor, said transmission gear sensor and said at least one multi-mode object detection sensor and generating said detection mode signal in response to said vehicle velocity signal and said gear signal and generating a countermeasure signal in response to said at least one object detection signal;

wherein at least one of said at least one multi-mode object detection sensor operates in a parking aid mode, which refers to a first detection range, when the vehicle is traveling forward at a velocity approximately greater than 0 kph and approximately less than or equal to 10 kph and operates in a default mode, which refers to a second detection range, when the vehicle is stationary or is traveling at a velocity approximately greater than 10 kph.

18. A method of detecting an object for a collision warning and countermeasure system for an automotive vehicle comprising:

generating a vehicle velocity signal;

operating at least one of at least one multi-mode object detection sensor in multiple operating modes corresponding to a plurality of detection ranges in response to said vehicle velocity signal; and

generating at least one object detection signal.

19. A method as in claim 18 further comprising generating a detection mode signal in response to said vehicle velocity signal and operating said at least one multi-mode object detection sensor in said detection mode in response to said detection mode signal.

20. A method as in claim 19 wherein operating at least one multi-mode object detection sensor in a detection mode comprises operating in a parking aid mode when the vehicle is traveling at a velocity approximately between 0-10 kph.