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Studies on development of the hand and skin touch sensing method

手和皮肤触摸传感方法的发展研究

基本信息

批准号：
15500133
负责人：
KAMIJO Masayoshi
金额：
$ 2.37万
依托单位：
Shinshu University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2003
资助国家：
日本
起止时间：
2003 至 2004
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-15500133/
关键词：
Touch Clothing comfort Tactile finger motion Sense Sensor globe Acceleration sensor Pressure sensor

项目摘要

[Purpose]The purpose of this study is the numerical analysis of finger motion in the tactile evaluation process, for such purpose of determining resilience, roughness, flexibility and softness. The subjects were initially assigned to one of three groups according to how well they able to discriminate between items using their bare hands. This was considered an important factor, because we hypothesized that those who were more adept at this discrimination may also use a different finger motion from those who were less adept. Each group then used the same sensor glove. We obtained data such as the applied force through the sensors, and analyzed the differences in finger motion according to type of evaluation. Then with the sensor glove, we were able to identify finger motion between the three groups, and conclude that finger motion varied according the type of evaluation as well as to the group each subject was initially assigned.[Experiment]We developed a new glove-type measurement syst … More em constructed with twenty pressure sensor sheets (one sheet size : 1.8x1.7cm) with four rows and four columns unit cells. The subjects wore the glove on their right hand, as shown in Figure 1. With their eyes closed, they evaluated the hand of a non woven fabric for 10 seconds. At each step subjects were directed to evaluate the hand of cloth in accordance with a specific purpose, such as evaluating for resilience, roughness, bending flexibility and softness. A total of 30 subjects were used in the experiment, fifteen men and fifteen women who were all between 20-29 years of age.We obtained data from the sensor-glove concerning applied force(g/cm2), which is the average of the pressure values recorded by the sensors. From this we further analyzed three kinds of physical data. The first was the coefficient of variation of the applied force, hereafter referred to as C.V.A.F. The second was the range of the center of applied force, hereafter referred to as R.C.A.F.[Results]From our research, we can make the following conclusions.(1)More sensitive humans move their fingers with less applied force and a higher C.V.A.F. They also showed finger motion characterized by varied movement over short distances.(2)More sensitive humans rely more on their index finger for evaluation than their thumb. Less sensitive humans tend to rely almost entirely on their thumb in evaluating the hand of cloth.(3)To evaluate resilience, the subjects palpated the cloth with a high applied force and a low variation. The analysis of R.C.A.F. yielded similar results. This means that the human moved their fingers both vertically and statically.(4)To evaluate roughness, humans palpated the hand of loth with a low applied force but at high variation. This means that humans move their fingers horizontally and dynamically.(5)Humans can easily understand how to evaluate roughness and resilience. We concluded that in defining the characteristics of finger motion, the amount the subject knew about each evaluation process was a very important factor.Through the pressure sensor, we observed that subjects had specific characteristic of finger motion when they evaluated the hand of cloth about resilience and roughness. Thus, we conducted that subjects can evaluate the hand of loth in a manner commensurate with their understanding of the purpose of evaluation. Less

【目的】本研究的目的是对触觉评价过程中手指的运动进行数值分析，以确定弹性、粗糙度、柔韧性和柔软度。根据受试者徒手区分物品的能力，他们最初被分为三组。这被认为是一个重要的因素，因为我们假设那些更擅长这种辨别的人可能也会使用不同于那些不太擅长的人的手指动作。然后，每一组都使用相同的传感器手套。我们通过传感器获得施加的力等数据，并根据评估类型分析手指运动的差异。然后，通过传感器手套，我们能够识别三组之间的手指运动，并得出结论，手指运动根据评估类型以及每个受试者最初分配的组而变化。[实验]我们开发了一种新的手套式测量系统…More em由20张压力传感器片（一张尺寸：1.8x1.7cm）组成，四行四列单元格。受试者右手佩戴手套，如图1所示。他们闭上眼睛，用10秒钟的时间评估一块非织造布的手。在每个步骤中，受试者被指导根据特定目的评估手布，例如评估弹性，粗糙度，弯曲灵活性和柔软度。实验共使用了30名受试者，15名男性和15名女性，年龄在20-29岁之间。我们从传感器手套中获得有关施加力（g/cm2）的数据，这是传感器记录的压力值的平均值。在此基础上进一步分析了三种物理数据。第一个是施加力的变异系数，简称C.V.A.F.。第二个是施加力中心的范围，简称R.C.A.F.。[结果]通过我们的研究，我们可以得出以下结论。(1)更敏感的人移动手指时施加的力更小，C.V.A.F.更高，他们的手指运动在短距离内也表现出不同的运动特征。(2)更敏感的人更依赖于他们的食指而不是拇指来进行评估。不太敏感的人几乎完全依靠拇指来判断布料的质地。(3)为了评估弹性，受试者用高施加力和低变化触诊布料。对rcaf的分析也得出了类似的结果。这意味着人类的手指既可以垂直移动，也可以静态移动。(4)为了评估粗糙度，人类用低施加力但变化很大的力触击了布的手。这意味着人类的手指会水平和动态地移动。(5)人类很容易理解如何评估粗糙度和弹性。我们得出结论，在定义手指运动特征时，受试者对每个评估过程的了解程度是一个非常重要的因素。通过压力传感器，我们观察到受试者在评估布手的弹性和粗糙度时具有特定的手指运动特征。因此，我们认为受试者能够以与他们对评估目的的理解相称的方式评估loth之手。少