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

以往对水平振动感知阈值的研究都是基于不同于实际生活环境的实验结果。本研究通过模拟生活环境的振动测试，探讨适合日常生活的水平振动感知阈值的评价。本研究主要关注被试的情境和视觉感觉对水平振动感知阈值的影响。在实验对象期待振动的情况下，他们可以感知到较小的加速度振动。然而，当被试没有预料到振动，并被电视等放松时，感知阈值会变高。对比以往的实验结果，被试的振动意识对感知阈值的影响最大，这取决于评估感知阈值的方法。问卷调查结果显示，视觉和听觉感觉影响感知阈值。因此，研究人员进行了实验，以确定水平振动的感觉，在这种情况下，受试者可以从窗户看到风景。视觉情境对振动感知的影响最大，且与振动幅值密切相关。在低频和小加速度范围内，振动不能被物理感知，但它们可以被视觉识别为视图的运动。因此，许多实验对象在看到风景的时候能够感知到振动。从结果来看，研究者评估水平振动的感知阈值，考虑到周向因素，并将它们与过去的指导方针进行排序。

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.