System and method for selecting a respirator

Patent metadata

Field	Value
Publication number	US-10061888-B2
Application number	US-201514945822-A
Country	US
Kind code	B2
Filing date	Nov 19, 2015
Priority date	Mar 15, 2013
Publication date	Aug 28, 2018
Grant date	Aug 28, 2018

Abstract

Apparatus and associated methods may relate to a system for predicting a respirator fit by comparing a respirator model in a deformed state to a specific facial model. In an illustrative example, an internal measurement may be calculated between an inside part of the respirator model and the facial model. The internal measurement may be compared against a predetermined threshold to determine a fit of the respirator model, for example. In various implementations, the internal measurement may be a distance and/or a volume between the respirator and facial model. In some implementations, a 3D representation of the respirator model may be displayed upon a 3D representation of the facial model. In some implementations, a color-coded facial display may characterize areas of comfort and discomfort with respect to the respirator model. For example, areas of comfort and discomfort may be objectively determined in view of an applied pressure by the respirator.

First claim

What is claimed is:

1. A method of predictively fitting a respirator to a specific user, the method comprising:
retrieving respirator shape data representative of a shape of a selected respirator;
capturing facial shape data representative of a facial shape of a selected facial area;
overlaying said respirator shape data upon said facial shape data to obtain deformation parameters for said respirator;
computationally deforming the respirator shape data according to the obtained deformation parameters;
determining an internal dimension between an internal surface of said respirator and a portion of said facial area behind said respirator;
generating a fit recommendation for display to a user based upon said internal dimension between said respirator and said facial area; and,
generating a color-coded display of said facial area indicative of a degree of fit of said respirator on said facial area.

2. The method of claim 1 , further comprising a step of determining whether said internal dimension exceeds a minimum threshold, wherein said fit recommendation is based on said minimum threshold.

3. The method of claim 1 , wherein said internal dimension comprises a distance between said respirator and said facial area.

4. The method of claim 1 , wherein said internal dimension comprises an internal volume between said respirator and said facial area.

5. The method of claim 1 , further comprising a step of computing an internal shape of said respirator based upon an external shape of said respirator.

6. The method of claim 1 , further comprising a step of overlaying said respirator upon said facial area in a deformed state of said respirator.

7. The method of claim 1 , further comprising a step of overlaying said respirator upon said facial area in a non-deformed state of said respirator.

8. The method of claim 1 , further comprising a step of storing a plurality of point cloud data sets each representative of a shape and size of a specific respirator in a respirator database.

9. A method of predictively fitting a respirator to a specific user, the method comprising:
retrieving respirator shape data representative of a shape of a selected respirator;
capturing facial shape data representative of a facial shape of a facial area of a user, wherein said facial shape data is captured with and without said respirator being worn;
overlaying said respirator shape data upon said facial shape data to obtain deformation parameters for said respirator;
computationally deforming the respirator shape data according to the obtained deformation parameters;
determining a contact line of said respirator on said facial area for location of a portion of said facial area behind said respirator;
determining an internal dimension between an internal surface of said respirator and said portion of said facial area behind said respirator;
generating a fit recommendation for display to a user based upon said internal dimension between said respirator and said facial area, and,
generating a color-coded display of said facial area indicative of a degree of fit of said respirator on said facial area.

10. The method of claim 9 , further comprising a step of determining whether said internal dimension exceeds a minimum threshold, wherein said fit recommendation is based on said minimum threshold.

11. The method of claim 9 , wherein said internal dimension comprises a distance between said respirator and said facial area.

12. The method of claim 9 , wherein said internal dimension comprises an internal volume between said respirator and said facial area.

13. The method of claim 9 , further comprising a step of computing an internal shape of said respirator based upon an external shape of said respirator.

14. The method of claim 9 , further comprising a step of modifying said respirator shape data to a deformed state.

15. The method of claim 9 , further comprising a step of overlaying said respirator upon said facial area in a non-deformed state of said respirator.

16. A system for predictively fitting a respirator to a specific user, the system comprising:
a processor module for defining facial shape data corresponding to a facial shape of a facial area and respirator shape data corresponding to a respirator shape and size;
means for determining an internal dimension between said respirator and said facial area by overlaying said respirator shape data upon said facial shape data to obtain deformation parameters for said respirator and computationally deforming the respirator shape data according to the obtained deformation parameters; and,
a recommendation module for display to a user based upon said internal dimension, wherein said recommendation module comprises a color-coded facial area display configured to display a color-coded display of said facial area indicative of a degree of fit of said respirator on said facial area.

17. The system of claim 16 , wherein said processing module computes an internal shape of said respirator based upon an external shape of said respirator.

Assignees

• Honeywell Int Inc

Inventors

• Wang Xiaoli
• Chen Henry
• Bai Hao
• Derby Paul
• Thiruvengada Hari
• Sarkissian Vicken
• Zhang Yajun-Edwin

Classifications

• A62B18/02 Primary

  Masks (gas-masks for animals A62B18/06; masks for welders A61F9/06) · CPC title

• G06F30/20

  Design optimisation, verification or simulation (optimisation, verification or simulation of circuit designs G06F30/30) · CPC title

• G06F17/5009

  Physics · mapped topic

• G06F19/12 Primary

  Physics · mapped topic

• G16B5/00

  ICT specially adapted for modelling or simulations in systems biology, e.g. gene-regulatory networks, protein interaction networks or metabolic networks · CPC title