Road condition detection system

• US 9,863,928 B1
• Filed: 03/20/2014
• Issued: 01/09/2018
• Est. Priority Date: 03/20/2013
• Status: Active Grant

• Current Assignee: United Parcel Service Of America Incorporated (United Parcel Service Incorporated)
• Original Assignee: United Parcel Service Of America Incorporated (United Parcel Service Incorporated)
• Inventors: Peterson, Erik, Kadaba, Nagesh, Schenken, Christopher T
• Primary Examiner(s): Vo, Tung
• Application Number:
  US14/221,248
• Time in Patent Office: 1,391 Days
• Field of Search: 348143-148
• CPC Class Codes: G01N 33/42 Road-making materials G01N33/38 takes precedence
• CPC Class Codes: G06V 20/56 exterior to a vehicle by using sensors mounted on the vehicle
• CPC Class Codes: G08G 1/0112 from the vehicle, e.g. floating car data [FCD]
• CPC Class Codes: G08G 1/0141 for traffic information dissemination

Abstract

The present invention is directed to a road condition detection system for identifying and monitoring road conditions, and for communicating information regarding road conditions to various users. The road condition detection system is provided for capturing data indicative of road conditions and analyzing the captured data to locate and identify various road conditions (e.g., road hazards, such as potholes, or weather conditions, such as ice). In various embodiments, the road condition detection system includes a road condition sensor array configured for being attached to a vehicle and for capturing road condition data. The captured data may be transmitted and assessed by a server configured for identifying potential road hazards or other road conditions based on the road condition data captured by the sensor array.

Claims

1. A system for detecting and monitoring road conditions, the system comprising:

one or more memory storage areas comprising historical illumination data associated with particular locations on one or more road surfaces and associated with particular times of day; and

one or more processors in communication with the one or more memory storage areas;

wherein the one or more processors are, collectively, configured to;

monitor road condition data captured by one or more road condition detection systems provided on a vehicle, the one or more road condition detection systems comprising;

a vibration sensor configured to capture vibration data indicative of the magnitude and frequency of vibration of the vehicle;

an optical camera comprising an aperture configured to receive light from the one or more road surfaces traveled by the vehicle;

an optical sensor configured to capture illumination data associated with an intensity of the light received through the aperture;

a location determining device configured to determine the location of the vehicle on the one or more road surfaces; and

a real-time clock configured to indicate a time of day;

capture, for storage in the one or more memory storage areas, road condition data from the one or more road condition detection systems, wherein the captured road condition data is indicative of one or more road condition attributes of the one or more road surfaces traveled by the vehicle, the road condition data comprising;

vibration data from the vibration sensor; and

illumination data from the optical sensor;

associate location data from the location determining device and time of day data from the real-time clock with the road condition data captured by the vibration sensor and the optical sensor;

retrieve the historical illumination data from the one or more memory storage areas;

compare the captured illumination data with the historical illumination data corresponding to the locations and the times of day of the captured illumination data;

identify one or more deviations between the captured illumination data and the historical illumination data;

store data indicative of the identified one or more deviations between the captured illumination data and the historical illumination data and their respective locations in the one or more memory storage areas;

identify a change in magnitude or frequency of the captured vibration data that is indicative of one or more potholes existing along the one or more road surfaces;

determine, based on the captured vibration data, a severity of the identified one or more potholes;

determine, based on the captured vibration data, the location of the identified one or more potholes;

store data indicative of the identified one or more potholes and their respective locations in the one or more memory storage areas; and

determine, based at least in part on the determined severity of the identified one or more potholes, the determined location of the identified one or more potholes, and deviations between the captured illumination data and the historical illumination data, a road condition index value for a road surface, wherein the road condition index value is indicative of the quantity of the identified one or more road potholes along the road surface, the severity of each of the identified one or more potholes along the road surface, and the illumination level along the road surface.

2. The system of claim 1, wherein the one or more processors are configured to determine the location of the identified one or more potholes by temporally associating the location data with road condition attributes indicated in the captured road condition data.

3. The system of claim 1, wherein the captured road condition data comprises reflectivity data indicative of light reflectivity levels along the one or more road surfaces.

4. The system of claim 1, wherein the captured road condition data comprises video data comprising a video recording of the one or more road surfaces;

and

wherein the one or more processors each are configured to identify deviations in the continuity of the video recording indicative of one or more potholes along the one or more road surfaces.

5. The system of claim 1, wherein the one or more processors are further configured to generate a geographical map display indicating the location of one or more of the identified one or more potholes.

6. The system of claim 1, wherein the one or more processors are further configured to transmit the data indicative of the identified one or more potholes to one or more remote user devices;

and

wherein the one or more processors are further configured to generate an alert to be transmitted to the one or more remote user devices upon identifying one or more potholes.

7. The system of claim 1, wherein the optical camera is configured for capturing road condition data comprising one or more of:

reflectivity data indicative of light reflectivity levels along the one or more road surfaces; and

video data comprising a video recording of the one or more road surfaces.

8. The system of claim 1, wherein the one or more road condition detection systems further comprise a road surface scanner configured for capturing surface profile data indicative of the surface profile of the one or more road surfaces.

9. The system of claim 1, wherein the one or more road condition detection systems comprise a front sensing unit configured for being mounted to a front portion of the vehicle and a rear sensing unit configured for being mounted to a rear portion of the vehicle aft of the front sensing unit.

10. The system of claim 9, wherein one or more sensing devices of the rear sensing unit are configured to capture road condition data corresponding to the road condition data captured by the front sensing unit to confirm the accuracy of the road condition data captured by the front sensing unit.

11. The system of claim 1, wherein the the one or more processors are configured for transmitting the captured road condition data to a remote server.

12. The system of claim 1, wherein the one or more processors are further configured to identify a change in magnitude or frequency of the vibration data that is indicative of a protrusion from the road surface.