IP Library › Granted Patent US 11,628,576
Granted Patent B2
US 11,628,576 · App. 17/823,701 · Granted Apr 18, 2023

Deformable sensors and methods for detecting pose and force against an object

Inventors: Alexander Alspach (Somerville, MA); Russell L. Tedrake (Needham, MA); Kunimatsu Hashimoto (Brookline, MA); Erik C. Sobel (Newton, MA)
Assignee: TOYOTA RESEARCH INSTITUTE, INC.
B25J13/084B25J9/1633B25J13/085G01B11/16G01L1/04G01L1/24G01L5/009G01L5/0061B25J18/06G05B19/18G05B2219/39319G05B2219/40201G05B2219/40253Y10S901/09Y10S901/30Y10S901/46Y10S901/47
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Quick Facts
Patent No.
US 11,628,576
App. No.
17/823,701
Granted
Apr 18, 2023
Kind
B2
Abstract

Systems and methods for detecting pose and force against an object are provided. A method includes receiving a signal from a deformable sensor comprising data from a deformation region in a deformable membrane resulting from contact with the object utilizing an internal sensor disposed within an enclosure and having a field of view directed through a medium and toward a bottom surface of the deformable membrane. The method also determines a pose of the object based on the deformation region of the deformable membrane. The method also determines an amount of force applied between the deformable membrane and the object is determined based on the deformation region of the deformable membrane.

Claims (36)

1. A deformable sensor for detecting force associated with an object, comprising:

an enclosure comprising a housing and a deformable membrane;

an internal sensor that is disposed within the enclosure and is configured to:

view the deformable membrane; and

output a deformation region within the deformable membrane as a result of contact with the object; and

a filter coupled to the internal sensor.

2. The deformable sensor of claim 1 , wherein the housing comprises a conduit configured to provide cabling for power or signals to or from the deformable sensor.

3. The deformable sensor of claim 1 , wherein pressure within the deformable sensor is specified by a pressurization parameter and is inversely proportional to deformability of the deformable sensor.

4. The deformable sensor of claim 1 , further comprising a plurality of internal sensors disposed within the enclosure.

5. The deformable sensor of claim 1 , wherein deformability of the deformable sensor is modified by a change of pressure within the enclosure due to membrane material or media material.

6. The deformable sensor of claim 1 , wherein the internal sensor comprises a time of flight sensor.

7. The deformable sensor of claim 1 , wherein the deformable membrane further comprises a filter layer configured to scatter an internal signal emitted by the internal sensor.

8. The deformable sensor of claim 1 , wherein a filter layer, disposed on a bottom surface of the deformable membrane, comprises a coating or a pattern.

9. A method for sensor-based detection of force associated with an object, comprising:

receiving, by a processor, a signal from a deformable sensor comprising data with respect to a deformation region in a deformable membrane resulting from contact with the object utilizing an internal sensor disposed within an enclosure and having a field of view through a filter and toward the deformable membrane; and

determining, by the processor, an amount of force applied between the deformable membrane and the object based on the deformation region.

10. The method of claim 9 , further comprising modifying deformability of the deformable sensor by changing pressure within the enclosure.

11. The method of claim 9 , further comprising outputting, by the processor, for display on a device, output of the deformable sensor as the object deforms the deformable membrane.

12. The method of claim 9 , further comprising:

determining, by the processor, a pose of the object; and

outputting, by the processor, a vector that is normal to a surface in the deformation region.

13. The method of claim 9 , further comprising scattering the optical signal emitted by the internal sensor of an internal signal emitted by the internal sensor via a filter layer disposed on a bottom surface of the deformable membrane.

14. The method of claim 13 , wherein analyzing, by the processor, the deformation region further comprises measuring changes to a coating or a pattern on the bottom surface of the deformable membrane.

15. The method of claim 9 , wherein the internal sensor comprises a time of flight sensor.

16. A system for detecting force associated with an object, comprising:

an enclosure comprising a housing and a deformable membrane;

an internal sensor that is disposed within the enclosure and is configured to:

view the deformable membrane; and

output a deformation region within the deformable membrane as a result of contact with the object;

a filter coupled to the internal sensor; and

a processor configured to:

receive data from the internal sensor representing the deformation region; and

determine an amount of force applied between the deformable membrane and the object.

17. The system of claim 16 , wherein the processor is further configured to determine a vector normal to a surface of the object based on the data representing the deformation region.

18. The system of claim 17 , wherein the processor is further configured to utilize the vector to determine which direction the object is oriented.

19. The system of claim 16 , wherein the internal sensor comprises a time of flight sensor.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 26, 2023
From: TOYOTA RESEARCH INSTITUTE, INC.
To: TOYOTA JIDOSHA KABUSHIKI KAISHA
Reel/Frame 063775/0650 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 31, 2022
From: ALSPACH, ALEXANDER; TEDRAKE, RUSSELL L.; HASHIMOTO, KUNIMATSU; SOBEL, ERIK C.
To: TOYOTA RESEARCH INSTITUTE, INC.
Reel/Frame 060954/0297 →
Continuity (5)
Continuation 17243664 · Apr 29, 2021
Continuation 16864874 · May 1, 2020
Continuation 15909742 · Mar 1, 2018
Provisional Application 62563595 · Sep 26, 2017
Related Publication 20220410403A1 · Dec 29, 2022
Cited By (2)
US 12,429,330 US 12,442,699