Trailering assist system for trailers with retractable drop leg

Patent metadata

Field	Value
Publication number	US-11390254-B2
Application number	US-201916356179-A
Country	US
Kind code	B2
Filing date	Mar 18, 2019
Priority date	Mar 18, 2019
Publication date	Jul 19, 2022
Grant date	Jul 19, 2022

Abstract

A motor vehicle includes apparatus for towing a trailer with a retractable drop leg. A backup camera captures a detection image with a field of view including the trailer. A vehicle controller detects an initiation of driving with the trailer being connected. A pattern memory prestores at least one image pattern indicative of an extended position or a retracted position of the drop leg. An image scanner receives the detection image when the initiation of driving is detected, wherein the image scanner compares the detection image and the at least one image pattern to detect whether the drop leg is in the extended position. A notification device responsive to the image scanner alerts a driver if the extended position is detected.

First claim

What is claimed is:

1. Vehicle apparatus adapted for towing a trailer with a retractable drop leg, comprising:
a backup camera capturing a detection image with a field of view including the trailer;
a vehicle controller detecting an initiation of driving with the trailer being connected;
a pattern memory prestoring at least one image pattern indicative of an extended position or a retracted position of the drop leg;
an image scanner receiving the detection image when the initiation of driving is detected, wherein the image scanner compares the detection image and the at least one image pattern to detect whether the drop leg is in the extended position; and
a notification device responsive to the image scanner to alert a driver if the extended position is detected;
wherein the pattern memory and image scanner are configurable by a user to capture a configuration image from the camera in which a pair of predetermined signature pattern bodies are affixed to the drop leg in a retracted position, wherein a first predetermined signature pattern body is affixed to a stationary portion of the drop leg and a second predetermined signature pattern body is affixed to a telescoping portion of the drop leg resulting in the predetermined signature pattern bodies being separated in the configuration image by a retraction distance, and wherein the image scanner detects the extended position when an image distance between the predetermined signature pattern bodies in the detection image is greater than the retraction distance.

2. The vehicle apparatus of claim 1 wherein the vehicle controller is responsive to the image scanner to inhibit vehicle motion if the extended position is detected.

3. The vehicle apparatus of claim 1 wherein the notification device is comprised of a visual indicator on a display panel.

4. The vehicle apparatus of claim 1 wherein the notification device is comprised of a sound transducer producing an audible warning sound.

5. A method for operating a vehicle towing a trailer with a retractable drop leg, comprising the steps of:
a user initially selecting a predetermined signature pattern on the drop leg as at least one image pattern;
the user initially selecting whether the predetermined signature pattern is associated with an extended position or a retracted position of the drop leg;
capturing a detection image with a backup camera having a field of view including the trailer;
detecting an initiation of driving of the vehicle with the trailer being connected;
when the initiation of driving is detected, comparing the detection image with the at least one image pattern to detect whether the drop leg is in the extended position, wherein the at least one image pattern is indicative of the extended position or the retracted position of the drop leg; and
alerting a driver if the extended position is detected.

6. The method of claim 5 further comprising the step of inhibiting vehicle motion if the extended position is detected.

7. The method of claim 5 further comprising the step of affixing a physical media marked with the predetermined signature pattern to the drop leg to be visible in the detection image in only one of the extended position or the retracted position.

8. The method of claim 5 wherein the step of alerting the driver is comprised of generating a visual indicator on a display panel.

9. The method of claim 5 wherein the step of alerting the driver is comprised of generating an audible warning sound.

10. Vehicle apparatus adapted for towing a trailer with a retractable drop leg, comprising:
a backup camera capturing a detection image with a field of view including the trailer;
a vehicle controller detecting an initiation of driving with the trailer being connected;
a pattern memory prestoring at least one image pattern indicative of an extended position or a retracted position of the drop leg;
an image scanner receiving the detection image when the initiation of driving is detected, wherein the image scanner compares the detection image and the at least one image pattern to detect whether the drop leg is in the extended position; and
a notification device responsive to the image scanner to alert a driver if the extended position is detected;
wherein the pattern memory and image scanner are configurable by a user to select a predetermined signature pattern as the stored image pattern and to select whether the predetermined signature pattern is associated with the extended position or the retracted position.

11. The vehicle apparatus of claim 10 further comprising a physical media marked with the predetermined signature pattern and adapted to be affixed to the drop leg to be visible in the detection image in only one of the extended position or the retracted position.

12. The vehicle apparatus of claim 10 wherein the vehicle controller is responsive to the image scanner to inhibit vehicle motion if the extended position is detected.

13. The vehicle apparatus of claim 10 wherein the notification device is comprised of a visual indicator on a display panel.

14. The vehicle apparatus of claim 10 wherein the notification device is comprised of a sound transducer producing an audible warning sound.

15. Vehicle apparatus adapted for towing a trailer with a retractable drop leg, comprising:
a backup camera capturing a detection image with a field of view including the trailer;
a vehicle controller detecting an initiation of driving with the trailer being connected;
a pattern memory prestoring at least one image pattern indicative of an extended position or a retracted position of the drop leg;
an image scanner receiving the detection image when the initiation of driving is detected, wherein the image scanner compares the detection image and the at least one image pattern to detect whether the drop leg is in the extended position; and
a notification device responsive to the image scanner to alert a driver if the extended position is detected;
wherein the pattern memory and image scanner are configurable by a user to capture an extended configuration image from the camera while the drop leg is in the extended position and a retraction configuration image from the camera while the drop leg is in the retracted position, and to store the configuration images as the image patterns to be compared to the detection image.

16. A method for operating a vehicle towing a trailer with a retractable drop leg, comprising the steps of:
capturing a configuration image from a backup camera having a field of view including the trailer in which a pair of predetermined signature pattern bodies are affixed to the drop leg in a retracted position, wherein a first predetermined signature pattern body is affixed to a stationary portion of the drop leg and a second predetermined signature pattern body is affixed to a telescoping portion of the drop leg resulting in the predetermined signature pattern bodies being separated in the configuration image by a retraction distance;
detecting an initiation of driving of the vehicle with the trailer being connected;
capturing a detection image with the backup camera;
when the initiation of driving is detected, comparing the detection image with at least one image pattern to detect whether the drop leg is in the extended position, wherein the at least one image pattern is indicative of the extended position or the retracted position of the drop leg, and wherein the comparing step detects the extended position when an image distance between the predetermined signature pattern bodies in the detection image is greater than the retraction distan

Assignees

• Ford Global Tech Llc

Inventors

• Pursifull Ross D

Classifications

• B60D1/665 Primary

  comprising supporting wheels, e.g. dollies · CPC title

• B60S9/22 Primary

  Means for attaching lifting, supporting, or manoeuvring devices to vehicles (for separate devices B60S11/00) · CPC title

• B60Q9/00

  Arrangement or adaptation of signal devices not provided for in one of main groups B60Q1/00 - B60Q7/00 {, e.g. haptic signalling} · CPC title

• B60R1/00 Primary

  Optical viewing arrangements; Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles · CPC title

• B60S9/14

  for both lifting and manoeuvring · CPC title