Detection of road conditions using a beam from an external system i.e. GPS, DBS

• US 6,922,636 B2
• Filed: 12/16/2000
• Issued: 07/26/2005
• Est. Priority Date: 12/24/1999
• Status: Expired due to Term

• Current Assignee: Mind Fusion, LLC (Ascend Innovation Management, LLC)
• Original Assignee: Daimler Chrysler Company LLC (Stellantis NV)
• Inventors: Katragadda, Shanmukh, Bhagavathula, Seshu, Balasubramanian, B. Kannan
• Primary Examiner(s): MCELHENY JR, DONALD E
• Application Number:
  US10/168,623
• Publication Number:
  US 20030171872A1
• Time in Patent Office: 1,683 Days
• Field of Search: 702/2, 702/5, 701/223, 382/100, 382/108
• US Class Current: 702/2
• CPC Class Codes: B60G 2400/821 Uneven, rough road sensing affecting vehicle body vibration
• CPC Class Codes: B60G 2400/822 Road friction coefficient determination affecting wheel traction
• CPC Class Codes: B60G 2401/16 GPS track data
• CPC Class Codes: B60R 16/0237 circuits concerning the atmospheric environment meteorology G01W
• CPC Class Codes: B60T 2210/12 Friction
• CPC Class Codes: B60T 8/172 Determining control parameters used in the regulation, e.g. by calculations involving measured or detected parameters B60T8/17551 takes precedence

Abstract

A device for determining ground surface condition, especially for roads includes receivers for receiving at least one scanning radiation component that is reflected from the scanned earth surface region, and contains surface condition information. Evaluation resources determine the surface state of the scanned ground surface region by evaluating the scanning radiation. The scanning radiation component comprises useable signal radiation of a foreign system and/or is generated by one or more satellites.

Claims

1. A device for recognition of a ground surface condition, comprising:

receivers for receiving at least one scanning radiation component that is reflected from a scanned ground surface region and contains surface condition information characterizing said ground surface region;

evaluation resources for determining the surface condition of the scanned ground surface region by evaluating the at least one scanning radiation component;

wherein, the at least one scanning radiation component comprises useful signal radiation generated from a foreign system.

2. The device according to claim 1, wherein the scanned ground surface region comprises a road surface.

3. The device according to claim 1, further comprising at least one satellite for generating the scanning radiation.

4. The device according to claim 1, wherein the useful signal radiation emanates from a source selected from the group consisting of a locating system, a radio transmitting system, and a television transmitting system.

5. The device according to claim 3, wherein the useful signal radiation emanates from a source selected from the group consisting of a locating system, a radio transmitting system, and a television transmitting system.

6. The device according to claim 1, wherein the at least one scanning radiation component further comprises a reference scanning radiation component that is not reflected from the scanned earth surface region.

7. The device according to claim 1, wherein the evaluation resources evaluate received scanning radiation with respect to at least one of amplitude, polarization and phase.

8. The device according to claim 1, wherein the evaluation resources comprise a classification stage which classifies the surface condition of the scanned ground surface region, based on a plurality of stored model conditions.

10. The system according to claim 1, wherein the radiation source comprises at least one of a position determining system, a radio transmitting system and a television transmitting system.

11. The system according to claim 1, wherein the radiation source is satellite based.

12. The system according to claim 10, wherein the radiation source is satellite based.

14. The system according to claim 7, wherein the radiation source comprises at least one of a position determining system, a radio transmitting system and a television transmitting system.

15. The system according to claim 7, wherein the radiation source is satellite based.

16. The system according to claim 14, wherein the radiation source is satellite based.

9. A system for determining the condition of a ground surface area, comprising:

a radiation source for irradiating said ground surface area;

at least one receiver for receiving at least radiation that emanates from said radiation source and is reflected from said ground surface area; and

a processor which processes received radiation to determine the condition of the ground surface area;

wherein the radiation source comprises a system that irradiates the ground surface area for a purpose other than determining ground surface conditions.

13. A method for determining the condition of a ground surface area, comprising:

receiving at lest radiation that emanates from a radiation source and is reflected from said ground surface area; and

analyzing received radiation to determine the condition of the ground surface area;

wherein, the radiation source comprises a system that irradiates the ground surface area for a purpose other than determining ground surface conditions.