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A method and device for testing the concave value of the surface of a seat or sofa

A testing method and testing device technology, applied in the direction of measuring devices, elastic testing, electromagnetic measuring devices, etc., can solve the problems of difficulty in measuring the concave value of seats, damage to the overall structure of seats and sofas, and small rigidity, etc., and achieve huge Effects on Economic Benefit and Business Value

Active Publication Date: 2019-07-19
JINAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the materials of seats and sofas are mostly soft cushions, not only the stiffness is small, but also it is more difficult to measure the concave value of seats and sofas under the cover of the human body.
If the displacement sensor device is embedded in the seat or sofa, the overall structure of the seat or sofa will be destroyed.

Method used

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  • A method and device for testing the concave value of the surface of a seat or sofa
  • A method and device for testing the concave value of the surface of a seat or sofa
  • A method and device for testing the concave value of the surface of a seat or sofa

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Experimental program
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Embodiment 1

[0097] The displacement sensing pad 2 is made of a layer of transparent soft PVC, which has good flexibility. The displacement sensing pad is placed on some flexible materials 3 such as the seat or sofa to be tested, and it can be close to the seat or sofa to generate Deformation, paste the strain gauge 1 on its surface, the method of sticking the strain gauge 1 is as follows image 3 As shown, test its deformation. The strain gages are respectively pasted on the upper and lower surfaces of the transparent soft PVC at the same position along the x and y directions. The resistance value of the strain gauge is 120.0±1.0Ω, its correction coefficient is 2.04±1.0%, and its size is 8.0mm*3.0mm. The wiring is very thin, only 0.45mm in diameter. The specific test steps for the concave value of the soft material surface under the action of the human body are as follows:

[0098] 1) Concave value strain gauges are respectively pasted on the upper and lower surfaces of the same positi...

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Abstract

The invention discloses a surface recess value test method and device for a seat or sofa. The test method comprises the following steps that a foil gauge array is pasted to the surface of a PVC cushion; the foil gauge array is connected with static strain indicators via leads; the PVC cushion is laid on a soft cushion to be tested, and all the static strain indicators are zeroed; a person sits on the soft cushion, the foil gauge array implements test, and the static strain indicators record and store strains of all the foil gauges; and the strains of the foil gauges are solved on the basis of a finite difference method and an overdetermined linear equation group, and a recess value of the surface of the soft cushion is obtained. The surface recess value of the seat or sofa under the effect of human body can be measured accurately, and different elasticities and reasonable radian and curved surface designs can be provided for cushions of furniture; and the method and device can be also used to measure the recess value of a backrest of the seat or sofa when a person lean against the backrest, basis is provided for reasonable radian design of hard chairs and stools, and personal requirements for comfortableness can be met better.

Description

technical field [0001] The invention relates to a displacement measurement method, which belongs to the technical field of measurement, in particular to a method and device for testing the concave value of the surface of a seat or sofa. Background technique [0002] When buying a car, the comfort of the seat is also more and more valued; when buying upholstered furniture such as seats and sofas, the comfort is the most important factor for buyers to buy. Manufacturers and designers must continue to innovate and improve comfort in order to have a place in the fierce competition in the market. [0003] Measuring the concave value of the surface of a person sitting on a seat or sofa is of great significance to the design of a seat and a sofa. In this way, according to the concave surface of the human body sitting on a certain material, it can be used for cushions and cushions of upholstered furniture. The backrest is designed in partitions, such as different elastic and rigid ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B7/16G01B7/02G01M5/00
CPCG01B7/02G01B7/18G01M5/005
Inventor 袁鸿吴嘉瑜张苗李善倾
Owner JINAN UNIVERSITY
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