Vehicle Obstruction Detection

Patent metadata

Field	Value
Publication number	US-2016274239-A1
Application number	US-201514658802-A
Country	US
Kind code	A1
Filing date	Mar 16, 2015
Priority date	Mar 16, 2015
Publication date	Sep 22, 2016
Grant date	—

Abstract

Obstructions in a path of a vehicle may be determined by recording a plurality of measurements while the vehicle is traveling through a geographic area. The plurality of measurements may involve a velocity of the vehicle, positions relative to the vehicle of a plurality of objects in the geographic area. Also, a path of a vehicle may be determined. An obstruction in the path may be detected as an object of the plurality of objects that is in the path. Also, the obstruction may be determined to be a stationary obstruction as a function of the velocity of the vehicle and multiple positions of the obstruction relative to the vehicle measured over time.

First claim

1 . A method comprising:
recording, by a processor of a data acquisition device coupled with a vehicle, a plurality of measurements while the vehicle is traveling through a geographic area, the plurality of measurements including a velocity of the vehicle, and positions relative to the vehicle of a plurality of objects in the geographic area; determining, by the processor, a path of a vehicle; detecting, by the processor, an obstruction in the path, wherein the obstruction is an object of the plurality of objects; identifying, by the processor, a minimum clearance height for the obstruction; identifying, by the processor, a first data acquisition device height; establishing, by the processor as a function of the velocity of the vehicle and multiple positions of the obstruction relative to the vehicle, that the obstruction is a stationary obstruction; determining, by the processor, that the minimum clearance height is lower than the first data acquisition device height; lowering, automatically, the data acquisition device from the first data acquisition device height to a second data acquisition device height that is lower than the minimum clearance height.

2 . (canceled)

3 . (canceled)

4 . (canceled)

5 . The method of claim 1 , further comprising:
providing, by the processor, a notification of the stationary obstruction in the path of the vehicle, wherein the notification comprises a visible warning on a display of the vehicle.

6 . The method of claim 1 , wherein the plurality of measurements further comprises a yaw rate of the vehicle, and the determining the path of the vehicle comprises determining the path as a function of the velocity of the vehicle and the yaw rate of the vehicle.

7 . The method of claim 1 , wherein the establishing that the obstruction is a stationary obstruction comprises establishing that the obstruction is a stationary obstruction through a comparison of a result of the function of the velocity of the vehicle and the positions of the obstruction relative to the vehicle to a threshold value.

8 . The method of claim 5 , further comprising:
determining a distance along the path to the stationary obstruction in the path of the vehicle, wherein providing the notification comprises providing the notification when the distance is less than a distance threshold value.

9 . The method of claim 5 , further comprising:
tracking, by the processor, the stationary obstruction in the path over a period of time; determining, by the processor, that the stationary obstruction in the path is a moveable object; and withholding the notification when the moveable object is determined.

10 . An apparatus comprising:
at least one processor; at least one memory including computer program code and operable to store data indicative of locations of objects relative to a vehicle and velocity of the vehicle; and a lowering actuator configured to automatically lower the apparatus; the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus at least to:
record a plurality of measurements while the vehicle is traveling through a geographic area, the plurality of measurements comprising velocity data of the vehicle and the positions of objects in the geographic area,
determine a current apparatus height,
determine a predicted path of the vehicle,
detect an obstruction in the path, wherein the obstruction is an object of the plurality of objects,
determine an obstruction clearance height,
establish, as a function of the velocity data and multiple position recordings of the obstruction, that the obstruction is a stationary obstruction,
determine that the current apparatus height is higher than the obstruction clearance height; and
trigger the lowering actuator to lower the apparatus to below the obstruction clearance height.

11 . (canceled)

12 . The apparatus of claim 10 , wherein the processor is further configured to establish the current apparatus height using data acquired with a sensor of the apparatus.

13 . (canceled)

14 . The apparatus of claim 10 , further comprising:
an output interface configured to present a warning to an operator of the vehicle in response to determining that the current apparatus height is higher than the obstruction clearance.

15 . (canceled)

16 . The apparatus of claim 10 , wherein the processor is further configured to establish that the obstruction is a stationary obstruction through a comparison of a result of the function of the velocity of the vehicle and the positions of the obstruction relative to the vehicle to a threshold value.

17 . The apparatus of claim 14 , wherein the processor is further configured to:
determine a distance along the path to the stationary obstruction in the path of the vehicle, wherein the notification is provided when the distance is less than a distance threshold value.

18 . The apparatus of claim 14 , wherein the processor is further configured to:
track the stationary obstruction in the path over a period of time; determine that the stationary obstruction in the path is a moveable object; and withhold the notification when the moveable object is determined.

19 . A non-transitory computer readable medium including instructions that when executed by a processor are configured to cause an apparatus at least to:
record a plurality of measurements while the vehicle is traveling through a geographic area, the plurality of measurements including a velocity of the vehicle, positions relative to the vehicle of a plurality of objects in the geographic area, and a measure of a minimum clearance height of the plurality of objects; determine a path of a vehicle; detect an obstruction in the path, wherein the obstruction is an object of the plurality of objects, and the obstruction has a minimum clearance height lower than a height of the vehicle; establish, as a function of the velocity of the vehicle and multiple positions of the obstruction relative to the vehicle, that the obstruction is a stationary obstruction; and lower, automatically, part of the vehicle to a height that is lower than the minimum clearance height.

20 . The medium of claim 19 , wherein the obstruction in the path is a highway overpass, a sign, or a bridge in the path of the vehicle.

21 . The medium of claim 19 , wherein the part of the vehicle that is lowered is a data acquisition device.

22 . (canceled)

23 . The method of claim 1 , wherein the data acquisition device may be partially lowered and the lowered data acquisition device coupled with the vehicle comprises a second data acquisition device height and providing a notification further comprises providing a notification if the minimum clearance height is lower than the second data acquisition device height.

24 . (canceled)

25 . The method of claim 1 , further comprising:
providing a notification of the stationary obstruction in the path of the vehicle, wherein the notification comprises an audio warning.

26 . The medium of claim 19 , the instructions further configured to cause the apparatus to provide a notification of the obstruction.

Assignees

• Here Global Bv

Inventors

• Gupta Vishisht Vijay
• Prados Michael

Classifications

• G01C21/3415

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• G01S17/89

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• G01S17/86

  Combinations of lidar systems with systems other than lidar, radar or sonar, e.g. with direction finders · CPC title

• G01S7/4813

  Housing arrangements · CPC title

• G01C3/08

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