Optical system for electric vehicle docking

• US 5,343,295 A
• Filed: 12/18/1992
• Issued: 08/30/1994
• Est. Priority Date: 12/18/1992
• Status: Expired due to Fees

• Current Assignee: General Motors Corporation (Motors Liquidation Co. GUC Trust)
• Original Assignee: Hughes Aircraft Company (Rtx Corporation)
• Inventors: Palombo, Mario, Lara, Jess D.
• Primary Examiner(s): Evans, F. L.
• Application Number:
  US07/992,393
• Time in Patent Office: 620 Days
• Field of Search: 356/1, 356/373, 356/375, 356/399, 356/153, 378/206
• US Class Current: 356/399
• CPC Class Codes: B60L 53/30 Constructional details of charging stations
• CPC Class Codes: B60L 53/36 by positioning the vehicle
• CPC Class Codes: B60L 53/37 using optical position determination, e.g. using cameras
• CPC Class Codes: B62D 1/28 non-mechanical , e.g. following a line or other known markers
• CPC Class Codes: G01S 17/46 Indirect determination of position data
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/7072 Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
• CPC Class Codes: Y02T 90/12 Electric charging stations
• CPC Class Codes: Y02T 90/14 Plug-in electric vehicles

Abstract

Disclosed is an apparatus and method for positioning an electric powered vehicle (34) relative to an electric recharging unit (36) utilizing an optical docking system (10). A first laser emitting diode (12) generates a first visible beam (18) and a second laser emitting diode (14) generates a second visible beam (20). The first visible beam (18) and the second visible beam (20) intersect at an intersection point (22) remote from the electric powered vehicle (34). This intersection point (22) is aligned with the electric recharging unit (36) thereby positioning the electric powered vehicle (34) at a predetermined distance and a predetermined position relative to the electric recharging unit (36).

Claims

1. An optical docking system for providing accurate positioning of an electric powered vehicle in relation to an electric recharging unit, said optical docking system comprising:

first visual indicator means for generating a first visible beam, said first visual indicator means positioned on a front of the electric powered vehicle;

second visual indicator means for generating a second visible beam, said second visual indicator means also positioned on the front of the electric powered vehicle, wherein the first visible beam and the second visible beam intersect at an intersection point remote from the electric powered vehicle; and

target means for receiving the first visible beam and the second visible beam, said target means positioned on the electric recharging unit, wherein the target means provides a visual target for aligning the intersection point of the first visible beam and the second visible beam to position the electric powered vehicle at a predetermined distance and a predetermined position relative to the electric recharging unit.

2. The optical docking system as defined in claim 1 wherein the first visual indicator means includes a first laser emitting diode operable for generating the first visible beam.

3. The optical docking system as defined in claim 2 wherein the second visual indicator means includes a second laser emitting diode operable for generating the second visible beam.

4. The optical docking system as defined in claim 3 wherein the first laser emitting diode and the second laser emitting diode both radiate in the red visible range.

5. The optical docking system as defined in claim 1 wherein the target means includes an alignment marker for aligning the intersection point of the first visible beam and the second visible beam.

6. An optical docking system for providing accurate positioning of an electric powered vehicle in relation to an electric recharging unit, said optical docking system comprising:

a first laser emitting diode operable to generate a first visible beam, said first laser emitting diode positioned on a front of the electric powered vehicle;

a second laser emitting diode operable to generate a second visible beam, said second laser emitting diode also positioned on the front of the electric powered vehicle, wherein the first visible beam and the second visible beam intersect at an intersection point remote from the electric powered vehicle; and

target means for receiving the first visible beam and the second visible beam, said target means positioned on the electric recharging unit, wherein the target means includes an alignment marker for aligning the intersection point of the first visible beam and the second visible beam to position the electric powered vehicle at a predetermined distance and a predetermined position relative to the electric recharging unit.

7. The optical docking system as defined in claim 6 wherein the first laser emitting diode and the second laser emitting diode are angled towards each other in order to cause the first visible beam and the second visible beam to intersect at the intersection point remote from the electric powered vehicle.

8. The optical docking system as defined in claim 7 wherein the first laser emitting diode and the second laser emitting diode are operable to move the intersection point of the first visible beam and the second visible beam relative to the electric powered vehicle.

9. The optical docking system as defined in claim 6 wherein the target means for receiving the first visible beam and the second visible beam is positioned on a recharging head of the electric recharging unit.

10. The optical docking system as defined in claim 6 wherein the first laser emitting diode and the second laser emitting diode are positioned on a charging receptacle of the electric powered vehicle.

11. A method of positioning an electric powered vehicle relative to an electric recharging unit, said method comprising the steps of:

providing a first visual indicator means for generating a first visible beam, said first visual indicator means positioned on the electric powered vehicle;

providing a second visual indicator means for generating a second visible beam, said second visual indicator means also positioned on the electric powered vehicle;

causing the first visible beam and the second visible beam to intersect at an intersection point remote from the electric powered vehicle;

providing a target means for receiving the first visible beam and the second visible beam, said target means positioned on the electric recharging unit; and

aligning the intersection point of the first visible beam and the second visible beam with the target means to position the electric powered vehicle at a predetermined distance and a predetermined position relative to the electric recharging unit.

12. The method as defined in claim 11 wherein the step of causing the first visible beam and the second visible beam to intersect include the step of:

angling the first visual indicator means and the second visual indicator means towards each other.

13. The method as defined in claim 12 wherein the step of angling the first visual indicator means and the second visual indicator means towards each other includes the step of:

adjusting the angle of the first visual indicator means and the second visual indicator means to move the intersection point of the first visible beam and the second visible beam relative to the electric powered vehicle.

14. The method as defined in claim 11 wherein the steps of providing the first visual indicator means and the second visual indicator means includes the steps of:

providing a first laser emitting diode for generating the first visible beam; and

providing a second laser emitting diode for generating the second visible beam.

15. The method as defined in claim 11 wherein the step of providing the target means includes the steps of:

providing an alignment marker for aligning the intersection point of the first visible beam and the second visible beam; and

aligning said intersection point of the first visible beam and the second visible beam with the alignment marker.

16. The method as defined in claim 15 wherein the step of aligning said intersection point of the first visible beam and the second visible beam with the alignment marker further includes the step of:

advancing the electric powered vehicle toward the electric recharging unit to align said intersection point of the first visible beam and the second visible beam with the alignment marker.