基于Haptic和空间认知的盲人路径诱导服务研究

发布时间：2018-03-03 06:09

本文选题：震动　切入点：空间认知　出处：《新疆大学》2013年硕士论文　论文类型：学位论文

【摘要】：对于明眼人来说视觉是获取环境信息最有效的途径，它能够提供路标、位置、方向、距离和速度等有效路径诱导信息，由于盲人视觉能力的丧失，使其在复杂移动环境中行走时必然面对众多挑战。作为社会上一类特殊群体，需要给予更多关怀和照顾，如何让他们能够安全的独立行走，是盲人生活中最大问题之一。随着经济发展、科技进步和社会文明程度的不断提高，这一特殊群体的出行问题越来越受到世界各国的关注和重视。本文首先对盲人导航/路径诱导辅具总体情况进行了概述；然后基于结构特征进行分类，并分别介绍了电子式行进辅具、移动式导盲机器人、智能盲杖、智能导盲系统以及基于Haptic技术的盲人路径诱导服务历史发展、应用现状；分析了基于震动技术的盲人导航/路径诱导辅具在今后的发展趋势以及存在的问题，并讨论了应用前景。 Haptic(震动)技术信息表达是一种有效的人机交互模式和信息传递方式，并作为信息传递的重要通道用于盲人导航/路径诱导辅具领域，弥补了在特定条件下声音的缺点与不足(当在吵杂的环境等公共场合时，系统导盲声音和周围其他声音就会混杂在一起，使盲人难以辨认，这时语音的功效可能会大大降低甚至失去作用。如果头戴耳机基于声音提示，这样会阻碍像车辆鸣笛声等对盲人具有很大导航作用的声音)。针对盲人具有敏锐于常人的触觉资源和对路径诱导环境特定的认知(包括空间方位、距离和行走速度等)，在综合应用GPS，GIS和Haptic(震动)等技术，开发研制了一种盲人路径诱导新模式的基础上，进一步探讨该模式向盲人提供路口等关键节点和偏离规划路径多种情况下的差异性震动，具有抗噪声干扰、反馈及时和高有效性等优点，具有很高的使用价值。本研究以GoogleLegend手机为例研制了原型系统，初步实现了设计功能，验证了系统实现的有效性。通过实验测试并结合盲人心理因素初步确定偏离路径、到达关键节点等阈值。在此盲人路径诱导新模式基础上，进一步考察了盲人的触觉传递通道的优越性和路径诱导提醒心理阈值状况。结果表明：(1)震动作为有效的路径诱导提醒方式，在一定程度上弥补了特定条件下声音的缺点与不足。(2)在收回有效问卷中，，存在影响思维、行为、认知等因素的心理卫生问题占总数的43.33%，并且被试人员对社会环境适应能力普遍较差。(3)盲人行走偏离路径提醒心理阈值结合实际并具有合理性，有待进一步优化和实践。最后通过系统初步测试以及与被试者、有关专家访谈等，对盲人路径诱导提出建议。旨在使盲人更好地感受环境信息，提高空间认知水平，对盲人路径诱导具有实用价值和社会现实意义。
[Abstract]:Vision is the most effective way to obtain environmental information for bright people. It can provide effective path guidance information, such as road signs, location, direction, distance and speed, due to the loss of visual ability of blind people. As a special group in society, they need more care and care, how to enable them to walk independently and safely. With the development of economy, the progress of science and technology and the continuous improvement of social civilization, the travel problem of this special group has been paid more and more attention by the countries all over the world. This paper first summarizes the general situation of blind navigation / path guidance aids, then classifies them based on structural features, and introduces the electronic walking aids, mobile guide robot, intelligent blind stick, etc. The history and application status of the intelligent blind guidance system and the blind route guidance service based on Haptic technology are analyzed, and the development trend and existing problems of the blind navigation / path guidance aids based on vibration technology are analyzed. The application prospect is also discussed. Haptic (vibration) technology information expression is an effective human-computer interaction mode and information transmission mode, and as an important channel of information transmission, it is used in the field of blind navigation / path guidance aids. It makes up for the shortcomings and shortcomings of sound under certain conditions (when in public places such as noisy environments, the system leads to blind sounds mixed with other sounds around them, making it difficult for blind people to recognize, The effectiveness of speech can be greatly reduced or even defunct. If headphones are based on sound cues, This can hinder sounds that have a great navigational effect on blind people, such as the siren of a vehicle. For blind people, they have sensitive tactile resources and specific knowledge of the path inducing environment (including spatial orientation). Based on the comprehensive application of GPS GIS and Haptic (shock) technology, a new model of path guidance for blind people is developed, such as distance and walking speed. It is further discussed that this model provides blind people with differential vibration at key nodes, such as intersections and deviations from the planned path, which has the advantages of anti-noise interference, timely feedback and high efficiency, etc. This study takes GoogleLegend mobile phone as an example to develop a prototype system, and initially realizes the design function, and verifies the effectiveness of the system implementation. Through the experimental test and combining with the psychological factors of blind people, the threshold of deviating path and reaching the critical node is determined. On the basis of this new model of blind path induction, The superiority of tactile transmission channel and the psychological threshold of path-induced alerting in blind people were further investigated. The results show that the vibration is an effective way of path-inducing alerting. To a certain extent, it makes up for the shortcomings and shortcomings of the voice under certain conditions.) in the effective questionnaire, there is an influence on thinking and behavior. The mental health problems of cognition and other factors accounted for 43.33% of the total, and the subjects' ability to adapt to social environment was generally poor. Finally, through systematic preliminary tests and interviews with subjects and experts, some suggestions are put forward to guide blind people's paths. The purpose of this paper is to make blind people feel environmental information better and improve their spatial cognitive level. It is of practical value and social practical significance to the path guidance of blind people.
【学位授予单位】：新疆大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：P208;TP11

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