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Method for predicting contact stress between human body and mattress

A contact stress, mattress technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems such as high cost and low efficiency, and achieve the goal of improving support performance, improving sleep quality, and promoting personalized design. effect of development

Inactive Publication Date: 2018-11-27
JINAN UNIVERSITY
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Problems solved by technology

[0003] The pressure distribution measurement system uses pressure-sensitive paper or a unique piezoelectric pressure sensor, which can perform static and dynamic measurement of the pressure distribution and pressure magnitude between any contact surfaces, and display it in intuitive and vivid two-dimensional and three-dimensional color graphics The contour and value of the pressure distribution, and then make an evaluation, the measurement of the pressure distribution becomes the first condition to solve these problems, and the solution to the pressure measurement problem is to use the repeated experiment of the system, which is not only low in efficiency, but also relatively high in cost

Method used

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  • Method for predicting contact stress between human body and mattress
  • Method for predicting contact stress between human body and mattress
  • Method for predicting contact stress between human body and mattress

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Embodiment 1

[0053] as attached Figure 6As shown in the flow chart, this embodiment provides a method for predicting the contact stress between the human body and the mountain palm mattress, which can predict the body pressure distribution of the whole human body on the contact part of the mattress. The present invention only uses the Kinect camera to generate a three-dimensional human body model, and the Kinect camera does not bring the risk of radiation to the subject like Computed Tomograph (CT) or Magnetic Resonance Imaging (MRI), and is more practical and efficient than that.

[0054] The present invention proposes a method for predicting the contact stress between the human body and the mountain palm mattress, comprising the following steps:

[0055] S1. Carry out a compression test on the material of the mountain palm mattress to obtain the mechanical parameters of the mountain palm mattress material.

[0056] In step S1, the size of the mountain palm test block is set to 1900m×81...

Embodiment 2

[0089] This embodiment discloses a finite element simulation method for predicting the contact stress between the human body and the mattress, and the specific steps are as follows:

[0090] First of all, a large number of compression experiments were carried out on the mountain palm material to measure the mechanical properties of the mountain palm mattress, and the stress-strain data obtained from the experiment were linearly fitted to obtain its mechanical constants.

[0091] Secondly, use the pressure distribution measurement system Tactilus to measure the body pressure distribution of the selected human body lying supine on the mountain palm mattress, and obtain the body pressure data of the selected human body.

[0092] Thirdly, the selected human body is scanned three-dimensionally to obtain the outer contour of the human body. Since the scanned body is point cloud data, the scanned data of the human body is processed with the reverse software Geomagic Studio to obtain t...

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Abstract

The invention discloses a method for predicting the contact stress between a human body and a mattress. The contact stress between the human body and an arenga engleri mattress is predicted and analyzed by adopting a method integrating a three-dimensional scanning technology and a finite element method; sensing cameras Kinect are used and are arranged on four columns respectively, a tester standsin a scanning range and keeps double arms slightly open, then point clouds on the surface of the human body can be scanned, a scanned human body model is processed by using Geomagic Studio to obtain asolid model of a subject; the obtained human body model is imported into grid generation software, material parameters of the mattress and the skin and muscles of the human body are input, and the contact stress between the human body and the mattress is predicted. Different users can select suitable mattresses according to the body pressure distribution situations on the mattresses made from different materials, accordingly back pain is effectively relieved, and the quality of sleep is improved.

Description

technical field [0001] The invention relates to the technical field of stress prediction, in particular to a method for predicting the contact stress between a human body and a mattress. Background technique [0002] Application of pressure distribution measurement system (Tactilus) in mattress comfort measurement. Through the evaluation of the measurement results of the pressure distribution, the system can help the designer or manufacturer to optimize the choice of materials, [0003] The pressure distribution measurement system uses pressure-sensitive paper or a unique piezoelectric pressure sensor, which can perform static and dynamic measurement of the pressure distribution and pressure magnitude between any contact surfaces, and display it in intuitive and vivid two-dimensional and three-dimensional color graphics The contour and value of the pressure distribution, and then make an evaluation, the measurement of the pressure distribution becomes the first condition to...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/23G06F2119/06
Inventor 袁鸿李欣吴嘉瑜
Owner JINAN UNIVERSITY
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