Capacitive sensing for automated furniture

• US 10,197,609 B2
• Filed: 02/08/2016
• Issued: 02/05/2019
• Est. Priority Date: 01/09/2012
• Status: Active Grant

• Current Assignee: L&P Property Management Company (Leggett & Platt Incorporated)
• Original Assignee: L&P Property Management Company (Leggett & Platt Incorporated)
• Inventors: Chacon, Ryan Edward, Rohr, William Robert, Madadi, Avinash, Lawson, Gregory Mark
• Primary Examiner(s): He, Amy
• Application Number:
  US15/018,862
• Publication Number:
  US 20160161623A1
• Time in Patent Office: 1,093 Days
• Field of Search: 324663, 324686
• CPC Class Codes: A47C 20/041 by electric motors
• CPC Class Codes: A47C 21/00 Attachments for beds, e.g. sheet holders, bed-cover holders bed tables supported on the bedstead A47B23/02; for children's beds A47D7/00, A47D15/00; Ventilating, cooling or heating means in connection with bedsteads or mattresses
• CPC Class Codes: A61B 5/1115 Monitoring leaving of a patient support, e.g. a bed or a wheelchair
• CPC Class Codes: A61B 5/6891 Furniture
• CPC Class Codes: A61G 5/14 Standing-up or sitting-down aids
• CPC Class Codes: A61G 7/015 divided into different adjustable sections, e.g. for Gatch position
• CPC Class Codes: G01R 27/2605 Measuring capacitance capacitive sensors G01D5/24
• CPC Class Codes: G01V 3/088 operating with electric fields G01V3/082 takes precedence
• CPC Class Codes: H03K 17/955 using a capacitive detector
• CPC Class Codes: H03K 2017/9602 characterised by the type or shape of the sensing electrodes
• CPC Class Codes: H03K 2217/96078 Sensor being a wire or a strip, e.g. used in automobile door handles or bumpers

Abstract

A system and method for incorporating occupancy-detecting technology into furniture is provided. More particularly, the invention relates to direct-connect device, system, and method for determining presence with respect to an automated furniture item, such as a recliner mechanism. In some aspects, a sensor is provided based on coupling one or more conductive features to a control component of the capacitance detector control component. A controller may determine the corresponding response based on occupancy detection and/or presence detection. A processor may receive information regarding changes in capacitance and determines when a change in voltage satisfies a threshold. Based on a determination of occupancy and/or presence, a variety of corresponding features of the adjustable recliner may be activated.

Claims

1. A direct-connect detection device for detecting presence with respect to an automated furniture item, said direct-connect detection device comprising:

an enclosed device body configured to couple to at least one of a plurality of conductive components of the automated furniture item, said enclosed device body comprising;

(1) at least one conductive mounting component comprising at least one mounting port having a conductive sensing surface, wherein the conductive sensing surface is adapted to capacitively couple to the at least one of the plurality of conductive components of the automated furniture item, and wherein the enclosed device body is secured to the at least one of the plurality of conductive components of the automated furniture item via the at least one conductive mounting component; and

(2) at least one coupling port configured to couple the direct-connect detection device to at least one automated furniture item feature; and

at least one capacitive sensing control component configured to detect presence with respect to the plurality of conductive components.

2. The direct-connect detection device of claim 1, wherein the at least one capacitive sensing control component is configured to receive at least one indication of change in capacitance.

3. The direct-connect detection device of claim 2, wherein the at least one capacitive sensing control component comprises a determining component configured to determine whether the received at least one indication of change in capacitance satisfies a threshold change in capacitance.

4. The direct-connect detection device of claim 3, wherein upon determining that the received at least one indication of change in capacitance satisfies the threshold change in capacitance, the determining component is configured to generate an indication of presence detection.

5. The direct-connect detection device of claim 1, wherein the conductive sensing surface is configured to capacitively couple the at least one capacitive sensing control component and the plurality of conductive components via at least one capacitive coupling mechanism.

6. The direct-connect detection device of claim 5, wherein in response to coupling the enclosed device body to one of the plurality of conductive components via the at least one capacitive coupling mechanism and the at least one conductive mounting component, the direct-connect detection device is configured to detect presence with respect to each of the plurality of conductive components of the automated furniture item.

7. The direct-connect detection device of claim 6, wherein the direct-connect detection device is configured to detect presence with respect to each of the plurality of conductive components based on each of the plurality of conductive components comprising a plurality of conductive coupling mechanisms, wherein the plurality of conductive components are configured to have a voltage based on proximity of an object to at least a portion of the automated furniture item.

8. The direct-connect detection device of claim 1, wherein the at least one capacitive sensing control component comprises one or more of:

an interrupt component configured to activate or inactivate one or more automated features of the automated furniture item;

a communication component configured to communicate a determination of presence to one or more users.

9. A method for detecting presence with respect to an automated recliner, the method comprising:

receiving capacitance monitoring data via a capacitive sensor comprising a direct-connect detection device coupled to a chair mechanism of the automated recliner, the direct-connect detection device comprising;

an enclosed device body,

and

a conductive mounting component comprising at least one mounting port including a conductive sensing surface, said chair mechanism comprising a plurality of conductive components coupled via a plurality of conductive coupling mechanisms, wherein the enclosed device body is secured to at least one of the plurality of conductive components via the at least one conductive mounting component, said chair mechanism configured to have a voltage based on proximity of an object to the chair mechanism; and

determining that a change in voltage satisfies a threshold voltage change indicating presence with respect to the capacitive sensor, wherein determining that the change in voltage satisfies a threshold comprises;

(1) monitoring changes in voltage detected by the capacitive sensor over a particular period of time; and

(2) comparing the change in voltage over the particular period of time with the threshold voltage change that indicates presence.

10. The method of claim 9, further comprising, based on determining that the change in voltage satisfies a threshold, activating or deactivating one or more features associated with the automated recliner.

11. The method of claim 9, wherein the direct-connect detection device is configured to receive an indication of a change in capacitance with respect to each of the plurality of conductive components of the chair mechanism in response to at least one of the plurality of conductive coupling mechanisms contacting a surface of at least one of the plurality of conductive components and the conductive sensing surface of the at least one mounting port.

12. The method of claim 9, wherein the direct-connect detection device coupled to the chair mechanism of the automated recliner comprises:

at least one coupling port configured to couple the direct-connect detection device to at least one automated furniture item feature.

13. The method of claim 12, wherein the at least one automated furniture item feature comprises one or more of the following:

an automated recliner motor;

an automated recliner handheld control;

an automated recliner accessory; and

an automated recliner safety feature.

14. The method of claim 9, wherein the direct-connect detection device coupled to the chair mechanism of the automated recliner comprises:

at least one capacitive sensing control component configured to detect presence with respect to the plurality of conductive components via the at least one conductive mounting component.

15. A direct-connect presence detection mechanism for detecting presence in association with an automated furniture item, the direct-connect presence detection mechanism comprising:

an enclosed device body;

a conductive mounting component comprising a mounting port having a conductive sensing surface, wherein the conductive sensing surface is adapted to capacitively couple to a capacitive sensing frame detection component of the automated furniture item, and wherein the enclosed device body is secured to the capacitive sensing frame detection component via the mounting port, said capacitive sensing frame detection component comprising a conductive material integral to each portion of the capacitive sensing frame detection component, said conductive material configured to carry a charge, wherein the capacitive sensing frame detection component comprises at least one stationary frame component of the automated furniture item and at least one articulating frame component of the automated furniture item, the at least one articulating frame component capacitively coupled to the at least one stationary frame component via a first capacitive coupling mechanism, said at least one articulating frame component configured to move at least between a first position and a second position; and

a detection mechanism control component configured to;

(1) receive an indication of monitored change in capacitance associated with the capacitive sensing frame detection component; and

(2) determine, based on the received indication of monitored change in capacitance, whether presence is detected with respect to at least a portion of the automated furniture item,

wherein the detection mechanism control component is directly coupled to the capacitive sensing frame detection component based on a second conductive coupling mechanism contacting both the capacitive sensing frame detection component and the conductive mounting component.

16. The direct-connect presence detection mechanism of claim 15, wherein determining whether presence is detected with respect to at least a portion of the automated furniture item comprises determining that a change in voltage satisfies a threshold amount of voltage associated with human presence.

17. The direct-connect presence detection mechanism of claim 15, wherein the detection mechanism control component is further configured to initiate a corresponding response based on determining that the threshold amount is satisfied.

18. The direct-connect presence detection mechanism of claim 17, further comprising:

a coupling port configured to couple the direct-connect presence detection mechanism to at least one of an automated furniture item motor and an automated furniture item control.

19. The direct-connect presence detection mechanism of claim 18, wherein based on coupling the direct-connect presence detection mechanism to the automated furniture item motor, at least one feature of the direct-connect presence detection mechanism is configured to deactivate movement of at least a portion of the articulating frame component between the first position and the second position.

20. The direct-connect presence detection mechanism of claim 15, further comprising a stabilizing port comprising a non-conductive mounting component configured to couple directly to a capacitive sensing frame detection component of an automated furniture item.