Cooperative collision mitigation

• US 20060106538A1
• Filed: 11/12/2004
• Published: 05/18/2006
• Est. Priority Date: 11/12/2004
• Status: Abandoned Application

• Current Assignee: GM Global Technology Operations LLC (General Motors Company)
• Original Assignee: GM Global Technology Operations LLC (General Motors Company)
• Inventors: Geisler, Scott P., Browne, Alan L., Altan, Osman D., Wood, Francis D., Krishnan, Hariharan
• Application Number:
  US10/987,461
• Publication Number:
  US 20060106538A1
• Time in Patent Office: Days
• US Class Current: 701/301
• CPC Class Codes: B60R 21/01 Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents electrical circuits for transmission of signals between steering wheel and the vehicle itself B60R16/027; for electrically actuating belt retractor locking means B60R22/343
• CPC Class Codes: B60R 21/0132 responsive to vehicle motion parameters , e.g. to vehicle longitudinal or transversal deceleration or speed value
• CPC Class Codes: B60R 21/0134 responsive to imminent contact with an obstacle , e.g. using radar systems
• CPC Class Codes: B60R 21/01512 Passenger detection systems
• CPC Class Codes: B60R 21/01516 using force or pressure sensing means
• CPC Class Codes: B60R 21/01526 using piezoelectric elements
• CPC Class Codes: B60R 21/01546 using belt buckle sensors
• CPC Class Codes: B60R 21/01558 monitoring crash strength
• CPC Class Codes: G08G 1/16 Anti-collision systems road vehicle drive control systems for predicting or avoiding probable or impending collision otherwise than by control of a particular sub-unit B60W30/08

Abstract

A method of predicting severity of a potential collision of a vehicle and an object. The method includes determining a probability of the potential collision. An elicitation signal is directed and transmitted to the object from the vehicle when the probability of the potential collision is greater than a threshold value. A response signal is received onboard the vehicle from a device situated on the object in response to the elicitation signal. The response signal includes a type associated with the object. A severity level of the potential collision is predicted based on the type.

Claims

1. A method of predicting severity of a potential collision of a vehicle and an object, the method comprising:

determining a probability of the potential collision;

directing and transmitting an elicitation signal to the object from the vehicle when the probability of the potential collision is greater than a threshold value;

receiving onboard the vehicle a response signal from a device situated on the object in response to the elicitation signal, the response signal including a type associated with the object; and

predicting a severity level of the potential collision responsive to the type.

2. The method of claim 1, wherein input to the determining includes sensor data collected by one or more sensors.

3. The method of claim 2, wherein the sensor data includes one or more of closing speed, range, position and angle of approach.

4. The method of claim 2, wherein at least one of the sensors provides a three hundred and sixty degree view around the vehicle.

5. The method of claim 2, wherein the sensors collect sensor data by utilizing one or more of ultra wide-band radar, pulsed radar, continuous wave radar, near radar, far radar, near and far infrared, vision and image processing, short range sensors, mid range sensors, and long range sensors.

6. The method of claim 1, wherein input to the determining includes an estimated percentage chance of the potential collision occurring.

7. The method of claim 1, wherein input to the determining includes a rate of change of an estimated percentage chance of the potential collision occurring.

8. The method of claim 1, wherein input to the determining includes an estimated percentage chance of the potential collision occurring and a rate of change of the estimated percentage chance of the potential collision occurring.

9. The method of claim 1, wherein input to the determining includes driver state data.

10. The method of claim 1, wherein the probability of the potential collision is greater than the threshold value if the vehicle is less than a selected distance from the object.

11. The method of claim 1, wherein the probability of the potential collision is greater than the threshold value if the vehicle is closing in on the object.

12. The method of claim 1, wherein the probability of the potential collision is greater than the threshold value if an estimate of time until the potential collision is less than a selected time period.

13. The method of claim 1, wherein the threshold value indicates that the potential collision is imminent.

14. The method of claim 1, wherein the threshold value indicates that the potential collision is nearly imminent.

15. The method of claim 1, wherein the predicting the severity of the potential collision includes estimating the order of potential collision occurrence when potential collisions with more than one object are predicted.

16. The method of claim 1, wherein the predicting the severity of the potential collision includes estimating vehicle trajectory after the potential collision.

17. The method of claim 1, wherein the predicting the severity of the potential collision is includes estimating a location of impact on the vehicle.

18. The method of claim 1, wherein the predicting the severity is further responsive to vehicle dynamics data.

19. The method of claim 18, wherein the vehicle dynamics data includes one or more of tire inflation pressure, tire wear state, road friction, anti-lock brake system operation, vehicle stability enhancement system operation, braking pressure, amount of vehicle pitch and roll, amount of vehicle yaw, environmental data, engine status, and engine operation data.

20. The method of claim 18, wherein the vehicle dynamics data includes one or more of number of occupants, number of belted occupants, mass of occupants, and loaded mass of vehicle.

21. The method of claim 18, wherein the vehicle dynamics data includes path prediction data, said path prediction data including one or more of steering wheel position, yaw rate, vehicle speed, vehicle position data and map preview data, wherein the vehicle position data and map preview data are determined onboard the vehicle or through telematics.

22. The method of claim 1, further comprising transmitting a command to set a control on a responsive device on the vehicle when the probability of the potential collision is greater than the threshold value, said command responsive to the severity of the potential collision for the vehicle.

23. The method of claim 1, further comprising transmitting a command to deploy a responsive device on the vehicle when the probability of the potential collision is greater than the threshold value, the command responsive to the severity of the potential collision for the vehicle.

24. The method of claim 23, wherein the command is further responsive to one or more of driver position, driver size, driver weight, and driver seat belt buckle status.

25. The method of claim 23, wherein the command is further responsive to one or more of passenger position, passenger size, passenger weight, and passenger seat belt buckle status.

26. The method of claim 1, further comprising transmitting a command to a responsive device, the command responsive to the probability of the potential collision.

27. The method of claim 1, wherein the directing and transmitting is performed via one or more of ultra wide-band radar, pulsed radar, continuous wave radar, near radar, far radar, near and far infrared, vision and image processing, short range sensors, mid range sensors, and long range sensors.

28. The method of claim 1, wherein the elicitation signal is an electromagnetic, modulated radio-frequency type signal having a wide frequency bandwidth.

29. The method of claim 1, wherein the response signal is an electromagnetic radio-frequency type signal having at least one narrow frequency bandwidth.

30. The method of claim 1, wherein the transmitting and receiving are performed via bands approved by the Federal Communications Commission.

31. The method of claim 1, further comprising transmitting a notice of the potential collision to a mobile application service provider when the probability of the potential collision is greater than the threshold value.

32. The method of claim 1, further comprising broadcasting a notice of the potential collision to other vehicles within a radius of the first vehicle when the probability of the collision is greater than the threshold value.

33. The method of claim 1, further comprising broadcasting a notice of the potential collision to a workload estimator system when the probability of the potential collision is greater than the threshold value, wherein the workload estimator system utilizes the notice of the potential collision to focus driver attention on accident avoidance and accident mitigation measures.

34. The method of claim 1, wherein one or more of the determining, directing, transmitting, receiving and predicting are performed by a system that is remote to the vehicle.

35. The method of claim 1, wherein one or more of the determining, directing, transmitting, receiving and predicting are performed by a satellite based system that is remote to the vehicle.

36. The method of claim 1, wherein the type associated with the object is one of a small diameter tree, a large diameter tree, a mailbox, a sign, a fire hydrant, a post, a concrete filled non-breakaway metal post, a non-breakaway telephone pole, a breakaway light pole, a fence, a guardrail, a building structure, a bridge abutment, and a car.

37. The method of claim 1, wherein at least one reflector is situated on the object to reflect at least one narrow predetermined frequency band of the elicitation signal as the response signal back toward the vehicle, wherein the at least one narrow predetermined frequency band provides the information positively identifying the type associated with the object.

38. The method of claim 37 wherein the shape of the reflector is utilized to positively identify the type associated with the object.

39. The method of claim 37 wherein a texture on a surface of the reflector is utilized to positively identify the type associated with the object.

40. The method of claim 1, wherein a transponder is situated on the object to receive the elicitation signal and transmit a predetermined signal as the response signal to the vehicle, wherein the predetermined signal provides the information positively identifying the type associated with the object.

41. The method of claim 1, the method further comprising:

establishing electromagnetic radio-frequency communication linkage between at least one global positioning system satellite and a global positioning system device onboard the vehicle to obtain real time vehicle position data from the satellite for use onboard the vehicle;

using a sensor to obtain real time object position data regarding the real time position of the object with respect to the vehicle;

using the real time vehicle position data and the real time object position data to determine whether digital map data accessed by the global positioning system device provides information positively identifying the type of the object; and

cross-checking for validation any said positive type identification information obtained from the digital map data with the positive type identification information obtained from the object.

42. The method of claim 41, wherein the digital map further provides object size data.

43. A method for predicting severity of a potential collision of a vehicle and an object, the method comprising:

determining a probability of the potential collision;

establishing electromagnetic radio-frequency communication linkage between at least one global positioning system satellite and a global positioning system device onboard the vehicle to obtain real time vehicle position data from the satellite for use onboard the vehicle when the probability of the potential collision is greater than a threshold value;

using a sensor to obtain real time object position data regarding the real time position of the object with respect to the vehicle;

using the real time vehicle position data and the real time object position data to determine whether digital map data accessed by the global positioning system device provides information positively identifying the type of the object; and

predicting a severity level of the potential collision in response to the global positioning system positively identifying the type of the object, wherein input to the predicting includes the type.

44. A computer program product for predicting severity of a potential collision of a vehicle and an object, the computer program product comprising:

a storage medium readable by a processing circuit and storing instructions for execution by the processing circuit for performing a method comprising;

determining a probability of the potential collision;

directing and transmitting an elicitation signal to the object from the vehicle when the probability of the potential collision is greater than a threshold value;

receiving onboard the vehicle a response signal from a device situated on the object in response to the elicitation signal, the response signal including a type associated with the object; and

predicting a severity level of the potential collision responsive to the type.

45. An apparatus for predicting severity of a potential collision of a vehicle and an object, the apparatus comprising:

a transmitter;

a receiver; and

a microprocessor in communication with the transmitter and the receiver and including instructions for;

determining a probability of the potential collision;

directing and transmitting an elicitation signal via the transmitter to the object from the vehicle when the probability of the potential collision is greater than a threshold value;

receiving onboard the vehicle via the receiver a response signal from a device situated on the object in response to the elicitation signal, the response signal including a type associated with the object; and

predicting a severity level of the potential collision responsive to the type.

46. The apparatus of claim 45 further comprising a controller for deployment of an responsive device onboard the vehicle in accordance with the severity prediction.

47. The apparatus of claim 45 further comprising a controller for setting a control on an responsive device onboard the vehicle in accordance with the severity prediction.

48. The apparatus of claim 45 wherein the apparatus for use onboard the microprocessor is integrated with or linked to one or more of a potential collision avoidance system and a workload estimator system.

49. The apparatus of claim 48 wherein stages of operation of the microprocessor, the potential collision avoidance system and the workload estimator system include moving from tracking to potential collision avoidance to predicting the severity of the potential collision.