Fundamental Study on Walking information and Guidance Systems for The Blind and The Elderly Using Faint Electric Waves

利用微弱电波为盲人和老年人提供步行信息和引导系统的基础研究

• 批准号: 03650440
• 负责人: KURIMOTO Yuzuru
• 金额: $ 1.15万
• 依托单位: MEIJO UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1991
• 资助国家: 日本
• 起止时间: 1991 至 1992
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-03650440/
• 关键词: The Blind; The Elderly; Faint Electric Waves; Walking Information and Guidance; Psychological Map; Imaginary Map; 案内・誘導システム; メンタルマップ

Much information has been obtained through our fundamental researches on the information and guidance systems which assist the blind and the elderly in walking alone on the streets using faint electric waves. The researches were broadly divided into two fields. One was the investigation of consciousness and training of the blind to walk for making a psychological map, and the other was the analysis of mutual relation characteristics between the output strength of an electric field and the sound pressure which were needed to collect information from a handy radio.1. The psychological mapThe consciousness about obstacles to walk, landmarks,ascent and descent at station public transportation mode and necessary information to walk were investigated. these were done with the cooperation of the students at a school for the blind. Very important walking information has been obtained from the study. Furthermore, an appearance of training to walk on a street from a subway station to a prefectur … More al library for generally blind men was recorded on a video camera and a process of training to walk by a trainer was also recorded on tapes. From the analysis of the data recorded from the study, walking characteristics of the blind have been clarified.The kind of information and a method of offering it which were needed to make a psycho-logical map have been clarified. In addition, a method to make a psychological map into a manual has become definite. In this study, from an opinion that surface information is more important than guidance, making the psychological map to offer the information by the use of faint electric waves which is listened within few meters radius is the principal objective.2. Mutual relation characteristics between output strength of electric field and the sound pressureMutual relation between output strength of electric field of the faint electric waves and the sound pressure of radio (under constant volume) which teceives this waves is important, because handy radio used in our study did not have AGT. As a result of our experimentations, the output of the sound pressure from the radio did not change within 5 meters radius even when the output strength(dB) of the faint electric waves from the transmitter was less than 60 dB. On the other hand,it turned out that the voice could not be listened from the radio,because the output strength of the faint electric waves rapidly decreased over 5 meters radius, and proportionally the sound strength also decreased. Less

我们对利用微弱的电波协助盲人和老人在街道上独自行走的信息和引导系统进行了基础研究，获得了很多信息。这些研究大致分为两个领域。一是调查盲人的意识和训练盲人行走以制作心理地图，二是分析手持收音机采集信息所需的电场输出强度与声压之间的相互关系特性.心理地图调查被试对步行障碍物、地标、车站上下班、公共交通方式、步行必要信息的认知情况。这些都是在盲人学校学生的合作下完成的。从这项研究中获得了非常重要的行走信息。此外，从地铁站到县的街道上行走训练的出现， ...更多信息 为一般盲人开设的一个图书馆用摄像机记录下来，教练训练行走的过程也用磁带记录下来。通过对研究记录的数据进行分析，澄清了盲人的行走特征，澄清了制作心理地图所需的信息类型和提供方法。此外，一种将心理地图制作成手册的方法也已确定。本研究从表面信息比引导更重要的观点出发，以利用在几公尺半径内所能听到的微弱电波，制作提供信息的心理地图为主要目的.电场输出强度与声压的相互关系特性微弱电波的电场输出强度与接收该电波的收音机（定容下）声压的相互关系很重要，因为我们研究中使用的便携式收音机没有AGT。作为我们实验的结果，即使当发射机微弱电波的输出强度（dB）小于60 dB时，无线电的声压输出在5米半径内也没有变化。另一方面，原来收音机里的声音是听不到的，因为微弱电波的输出强度在半径5米范围内迅速减弱，声音强度也成比例地减弱。少