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detection of perception threshold of horizontal vibration caused by wind load in a condition approximating a living environment and its performance assessment

近似居住环境条件下风荷载引起的水平振动感知阈值检测及其性能评估

基本信息

批准号：
10650575
负责人：
ISHIKAWA Takashige
金额：
$ 2.05万
依托单位：
Japan Women's University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1998
资助国家：
日本
起止时间：
1998 至 2000
项目状态：
已结题

项目摘要

The past studies on perception threshold of horizontal vibration were based on the results of experiments in a condition different from the actual life environment. In this study, vibration tests to subjects in a condition approximating a living environment, and its purpose is to investigate evaluation of perception threshold of horizontal vibration suitable for daily life.This study focuses on subjects' situation and visual sensation as they influence their perception threshold of horizontal vibration. In the case where the subjects are expecting the vibration, they can perceive smaller acceleration vibrations. However, in the case where the subjects are not expecting the vibration and are relaxed by television etc., the perception threshold becomes higher. As a comparison of the past experimental results, the subjects' consciousness of vibration has the most influence on the perception threshold, and that depends on the methods of evaluating the perception threshold.And results of questionnaires show that visual and auditory sensation influence perception threshold. So experiments have been carried out to determine the sense of horizontal vibration where subjects can see the view from a window. The visual situation has the greatest influence on vibration perception, and this is closely connected with vibration amplitude. Vibrations can not be perceived physically in the low frequency and small acceleration range, but they can be recognized visually as movement of the view. Therefore, many subjects can perceive vibrations when they can see the view.From the results, the investigators evaluate perception thresholds of horizontal vibration in consideration of circumferential factors and rank them relative to the past guidelines.

以往对水平振动知觉阈值的研究都是基于与实际生活环境不同的条件下的实验结果。本研究在接近生活环境的条件下对被试进行振动测试，目的是探讨适合日常生活的水平振动感知阈值的评价，重点研究被试的情境和视觉感受对水平振动感知阈值的影响。在受试者期待振动的情况下，他们可以感知较小的加速度振动。然而，在受试者不期望振动并且通过电视等放松的情况下，感知阈值变得更高。通过对比以往的实验结果发现，受试者的振动意识对知觉阈值的影响最大，这取决于知觉阈值的评价方法，问卷调查结果表明视觉和听觉对知觉阈值有影响。因此，人们进行了一些实验，以确定受试者从窗户看到的水平振动的感觉。视觉环境对振动知觉的影响最大，这与振动幅度密切相关。在低频和小加速度范围内，振动不能被物理地感知，但它们可以被视觉地识别为视图的移动。因此，很多被试者在看到视野的情况下也能感觉到振动。根据结果，研究者考虑了周围因素，对水平振动的感知阈值进行了评估，并将其与过去的指南进行了排名。