Methods and systems for the manufacture and initiation of a pressure detection mat

• US 9,671,304 B2
• Filed: 07/11/2012
• Issued: 06/06/2017
• Est. Priority Date: 07/13/2011
• Status: Active Grant

• Current Assignee: Enhanced Surface Dynamics, Inc.
• Original Assignee: Enhanced Surface Dynamics, Inc.
• Inventors: Remez, Tal Natan, Averbuch, Gusti Yoram, Ben Shalom, Amir
• Primary Examiner(s): Williams, Hezron E
• Assistant Examiner(s): Eyassu, Marrit
• Application Number:
  US14/232,366
• Publication Number:
  US 20140373594A1
• Time in Patent Office: 1,791 Days
• Field of Search: 73 108, 73862046, 29593, 901 46, 3612833
• CPC Class Codes: A61B 2562/0247 Pressure sensors
• CPC Class Codes: A61B 2562/046 in a matrix array
• CPC Class Codes: A61B 5/6892 Mats
• CPC Class Codes: G01B 7/16 for measuring the deformation in a solid, e.g. by resistance strain gauge
• CPC Class Codes: G01L 1/142 using capacitors
• CPC Class Codes: G01L 1/146 for measuring force distributions, e.g. using force arrays G01L1/148 takes precedence
• CPC Class Codes: G01L 1/205 using distributed sensing elements
• CPC Class Codes: G01L 1/22 using resistance strain gauges
• CPC Class Codes: G01L 25/00 Testing or calibrating of apparatus for measuring force, torque, work, mechanical power, or mechanical efficiency
• CPC Class Codes: Y10T 29/49004 including measuring or testing of device or component part

Abstract

A method for manufacture of a pressure sensing mat comprising the steps of: (a) preparing two conductive layers, each conductive layer comprising an array of conducting strips mounted upon a substrate arranged in a parallel fashion, wherein the conducting strips of the first conductive layer are oriented perpendicularly in relation to the conducting strips of the second conductive layer; (b) for each conductive layer, connecting each of the conducting strips to a communication line; (c) sandwiching a compressible layer between the two conductive layers; and (d) performing a pressure reading standardization test to the mat.

Claims

1. A method for manufacture of a pressure sensing mat, the method comprising the steps of:

(a) preparing two conductive layers, each conductive layer comprising an array of conducting strips mounted upon a substrate arranged in a parallel orientation, wherein the conducting strips of the first conductive layer are oriented perpendicularly in relation to the conducting strips of the second conductive layer;

(b) connecting at least two of the conducting strips within one of the two conductive layers by;

(i) placing a conducting plate across the conducting strip;

(ii) applying an alternating potential to the conducting plate; and

(iii) measuring voltage between each of the conducting strips and ground;

(c) sandwiching a compressible layer between said two conductive layers; and

(d) performing a pressure reading standardization test on the mat.

2. The method of claim 1, further comprising (e) laminating each of the conductive strips with an insulating material.

3. The method of claim 1, further comprising

(e) measuring the resistance between at least one pair of adjacent conductive strips.

4. The method of claim 3, wherein each of the conductive strips is connected to a test monitor through a test probe.

5. The method of claim 4, further comprising (f) moving the test probe sequentially from one pair of adjacent conductive strips to the next until all the strips have been tested.

6. The method of claim 1 wherein step (d) comprises the steps of:

(i) exerting a known pressure upon at least one region of the pressure detection mat;

(ii) measuring pressure reading recorded by the pressure detection mat; and

(iii) comparing the pressure reading with a look up table.

7. A method for manufacture of a pressure sensing mat, the method comprising the steps of:

(a) preparing two conductive layers, each conductive layer comprising an array of conducting strips mounted upon a substrate arranged in a parallel orientation, wherein the conducting strips of the first conductive layer are oriented perpendicularly in relation to the conducting strips of the second conductive layer;

(b) connecting at least two of the conducting strips to a communication line by;

(i) placing a conducting plate across the conducting strips;

(ii) applying an alternating potential to each of the conducting strips; and

(iii) for each conducting strip measuring voltage between the conducting plate and ground;

(c) sandwiching a compressible layer between the two conductive layers; and

(d) performing a pressure reading standardization test on the mat.

8. A method for manufacture of a pressure sensing mat, the method comprising the steps of:

(a) preparing two conductive layers, each conductive layer comprising an array of conducting strips mounted upon a substrate arranged in a parallel orientation, wherein the conducting strips of the first conductive layer are oriented perpendicularly in relation to the conducting strips of the second conductive layer;

(b) connecting at least two of the conducting strips to a communication line by;

(i) placing a conducting plate across the conducting strips;

(ii) applying an alternating potential to all conducting strips except one selected conducting strip; and

(iii) measuring voltage between the selected strip and ground;

(c) sandwiching a compressible layer between the two conductive layers; and

(d) performing a pressure reading standardization test on the mat.

9. A method for manufacture of a pressure sensing mat, the method comprising the steps of:

(a) preparing two conductive layers, each conductive layer comprising an array of conducting strips mounted upon a substrate arranged in a parallel orientation, wherein the conducting strips of the first conductive layer are oriented perpendicularly in relation to the conducting strips of the second conductive layer;

(b) connecting at least two of the conducting strips to a communication line by;

(i) placing a conducting plate across the conducting strips;

(ii) applying an alternating potential to one selected conducting strip; and

(iii) measuring voltage between all conducting strips except the selected strip and ground;

(c) sandwiching a compressible layer between the two conductive layers; and

(d) performing a pressure reading standardization test on the mat.

10. The method of claim 9, further comprising laminating the conducting plate with an insulating material.

11. A method for testing a pressure sensing mat comprising a first conductive layer comprising an array of parallel conducting strips, a compressible layer situated upon the first array and a second conductive layer comprising an array of parallel conducting strips situated upon the compressible layer, the conducting strips of each conductive layer being connected to a communication line, the method comprising the step of:

(a) for each conductive layer, measuring the resistance between at least one pair of adjacent conducting strips; and

(b) testing the electrical connection between each of the at least one pair of adjacent conducting strips and the communication line by;

(i) placing a conducting plate across each pair of the conducting strips;

(ii) applying an alternating potential to the conducting plate; and

(iii) measuring voltage between each pair of the conducting strips and ground.

12. The method of claim 11, further comprising laminating each of the at least one pair of adjacent conductive strips with an insulating material.

13. The method of claim 11, wherein for step (a), each of the at least one pair of adjacent conductive strips is connected to a test monitor through a test probe.

14. The method of claim 11, wherein the at least one pair of adjacent conductive strips includes at least two pairs of adjacent conductive strips, and further comprising moving the test probe sequentially from one pair of adjacent conductive strips to the next until all the strips have been tested.

15. The method of claim 11 further comprising the step of:

(c) performing a pressure reading standardization test to said the pressure sensing mat.

16. The method of claim 15, wherein step (c) comprises the steps of:

(i) exerting a known pressure upon at least one region of the pressure sensing mat;

(ii) measuring pressure reading recorded by the pressure sensing mat; and

(iii) comparing said the pressure reading with a look up table.

17. A method for testing a pressure sensing mat comprising a first conductive layer comprising an array of parallel conducting strips, a compressible layer situated upon the first array and a second conductive layer comprising an array of parallel conducting strips situated upon the compressible layer, the conducting strips of each conductive layer being connected to a communication line, the method comprising the step of:

(a) for each conductive layer, measuring the resistance between at least one pair of adjacent conducting strips; and

(b) testing the electrical connection between each of the at least one pair of adjacent conducting strips and the communication line by

(i) placing a conducting plate across each pair of the conducting strips;

(ii) applying an alternating potential to each pair of the conducting strips; and

(iii) for each pair of the conducting strips measuring voltage between the conducting plate and ground.

18. A method for testing a pressure sensing mat comprising a first conductive layer comprising an array of parallel conducting strips, a compressible layer situated upon the first array and a second conductive layer comprising an array of parallel conducting strips situated upon the compressible layer, the conducting strips of each conductive layer being connected to a communication line, the method comprising the step of:

(a) for each conductive layer, measuring the resistance between at least one pair of adjacent conducting strips; and

(b) testing the electrical connection between each of the at least one pair of adjacent conducting strips and the communication line by

(i) placing a conducting plate across each pair of the conducting strips;

(ii) applying an alternating potential to all conducting strips except one selected conducting strip; and

(iii) measuring voltage between the selected strip and ground.

19. A method for testing a pressure sensing mat comprising a first conductive layer comprising an array of parallel conducting strips, a compressible layer situated upon the first array and a second conductive layer comprising an array of parallel conducting strips situated upon the compressible layer, the conducting strips of each conductive layer being connected to a communication line, the method comprising the step of:

(a) for each conductive layer, measuring the resistance between at least one pair of adjacent conducting strips; and

(b) testing the electrical connection between each of the at least one pair of adjacent conducting strips and the communication line by

(i) placing a conducting plate across each pair of the conducting strips;

(ii) applying an alternating potential to one selected conducting strip; and

(iii) measuring voltage between all conducting strips except the selected strip and ground.