Systems, devices, and methods including a stand-up wheel chair having automatic stability control

Patent metadata

Field	Value
Publication number	US-9493049-B2
Application number	US-201514815362-A
Country	US
Kind code	B2
Filing date	Jul 31, 2015
Priority date	Sep 24, 2013
Publication date	Nov 15, 2016
Grant date	Nov 15, 2016

Abstract

Systems, devices, and methods are described for providing, among other things, a stand-up wheel chair having automatic stability control.

First claim

What is claimed is:

1. A stand-up wheelchair, comprising:
a stand-up assembly structured and dimensioned to support a passenger to transition between a first configuration and a second configuration while in use;
a plurality of rotatable members operable to frictionally interface the stand-up wheelchair to a travel surface and to move the stand-up wheelchair along the travel surface; and
a stabilization assembly having at least one of (i) a gyroscope operable to apply a righting torque along an output axis of the stand-up wheelchair responsive to a change in a stability status associated with a transition between the first configuration and the second configuration, (ii) a variable center of mass assembly including one or more counter masses operable to displace the one or more counter masses responsive to a change in the stability status, and (iii) a plurality of flywheels operable to apply a righting torque along one or more of a transverse axis, a longitudinal axis, or a vertical axis of the stand-up wheelchair responsive to a change in the stability status,
wherein the change in a stability status includes at least one of a detected change in a center of mass location of the stand-up wheelchair and an externally-applied torque.

2. The stand-up wheelchair of claim 1 , wherein the stabilization assembly includes the gyroscope operable to apply the righting torque along the output axis of the stand-up wheelchair responsive to a change in the stability status.

3. The stand-up wheelchair of claim 2 , further comprising:
circuitry operably coupled to the stabilization assembly, the circuitry operable to gimbal the gyroscope about an input axis to apply the righting torque about the output axis responsive to a change in the stability status.

4. The stand-up wheelchair of claim 1 , wherein the stabilization assembly includes the variable center of mass assembly including one or more counter masses operable to displace the one or more counter masses responsive to a change in the stability status.

5. The stand-up wheelchair of claim 4 , further comprising:
circuitry operably coupled to the stabilization assembly, the circuitry operable to activate displacement of the one or more counter masses responsive to a change in the stability status.

6. The stand-up wheelchair of claim 1 , wherein the stabilization assembly includes the plurality of flywheels operable to apply the righting torque along one or more of the transverse axis, the longitudinal axis, or the vertical axis of the stand-up wheelchair responsive to a change in the stability status.

7. The stand-up wheelchair of claim 6 , further comprising:
circuitry operably coupled to the stabilization assembly, the circuitry operable to actuate rotation of at least one flywheel of the plurality of flywheels responsive to a change in the stability status.

8. The stand-up wheelchair of claim 1 , wherein the first configuration is at least one of a sitting position, a kneeling position, a reaching position, and a leaning position, and wherein the second configuration is a substantially standing position.

9. The stand-up wheelchair of claim 8 , wherein the stand-up assembly includes an articulated structure movable between a sitting configuration, a kneeling configuration, a reaching configuration, a leaning configuration, or a standing configuration and a different one of a sitting configuration, a kneeling configuration, a reaching configuration, a leaning configuration, or a standing configuration.

10. The stand-up wheelchair of claim 1 , wherein the stand-up assembly includes a selectively tiltable or retractable passenger support structure; and wherein the stabilization assembly includes circuitry operable to cause the passenger support structure to tilt or retract responsive to a change in an applied torque.

11. The stand-up wheelchair of claim 1 , further comprising:
circuitry for activating the stabilization assembly to apply a righting torque responsive to a change in a tilt of the stand-up wheelchair.

12. The stand-up wheelchair of claim 1 , further comprising:
circuitry for detecting an externally applied torque.

13. The stand-up wheelchair of claim 1 , further comprising:
a travel route module including circuitry operable to generate travel route status information.

14. The stand-up wheelchair of claim 13 , wherein the travel route module includes circuitry operable to acquire travel-route status information from a remote network.

15. The stand-up wheelchair of claim 13 , wherein the travel route module includes circuitry operable to acquire travel-route wheelchair access information from a remote network.

16. The stand-up wheelchair of claim 13 , wherein the travel route module includes circuitry operable to acquire pedestrian traffic information from a remote network.

17. The stand-up wheelchair of claim 13 , further comprising:
a virtual object generator operably coupled to the travel route module, the virtual object generator including circuitry for generating a virtual representation of travel route status information on a virtual display.

18. The stand-up wheelchair of claim 1 , wherein the stabilization assembly includes at least two gyroscopes rotating along substantially opposite spin axes, the two gyroscopes configured to be gimbaled upon substantially opposite input axes, so as to produce righting torques about substantially aligned output axes.

19. A stand-up wheelchair system, comprising:
circuitry for actuating a stand-up assembly configured to support a passenger transitioning between a sitting configuration and a substantially standing configuration;
circuitry for sensing a stand-up wheelchair mass distribution and for determining a standup wheelchair vertical center of mass location; and
circuitry for actuating a stabilization assembly having at least one of (i) a gyroscope operable to apply a righting torque along an output axis of the stand-up wheelchair responsive to a change in a stability status associated with a transition between the sitting configuration and the substantially standing configuration, (ii) a variable center of mass assembly including one or more counter masses operable to displace the one or more counter masses responsive to a change in the stability status, and (iii) a plurality of flywheels operable to apply a righting torque along one or more of a transverse axis, a longitudinal axis, or a vertical axis of the stand-up wheelchair responsive to a change in the stability status,
wherein the change in the stability status includes at least one of a detected change in a center of mass location of the stand-up wheelchair and an externally-applied torque.

20. A method of operating stand-up wheelchair, comprising:
actuating a stand-up assembly configured to support a passenger transitioning from a first configuration to a substantially standing configuration through action of the stand-up assembly;
determining a stand-up wheelchair center of mass location;
detecting a change in the stand-up wheelchair center of mass location; and
responsive to detecting the change in the stand-up wheelchair center of mass location, at least one of applying a gyroscope-based righting torque, displacing one or more counter masses along an axis of the stand-up wheelchair, and actuating rotation of at least one flywheel.

Assignees

• Elwha Llc

Inventors

• Hyde Roderick A
• Ishikawa Muriel Y
• Malaska Stephen L
• Tegreene Clarence T

Classifications

• B60G21/08 Primary

  characterised by use of gyroscopes (gyroscopes for stabilising vehicle bodies without controlling suspension arrangements B62D37/06) · CPC title

• A61G2203/10

  characterised by specific control means, e.g. for adjustment or steering · CPC title

• A61G2200/36

  standing · CPC title

• A61G2200/34

  sitting · CPC title

• A61G5/1089 Primary

  Anti-tip devices · CPC title