【摘要】：The blind reading aid is a new product designed by the society today. It is a reading aid that can help blind people and people with low vision to read printed fonts. Previously， with the progress of science and technology， The market gradually appeared for some books for the blind reading， compared with ordinary books， blind books on the text for the braille， through the blind with a finger touch， learn the contents of the book. However， the cost of such books is relatively high cost. Subsequently， the domestic and foreign markets followed by the emergence of blind e-books， blind people can choose what they want to learn the content of this electronic products greatly reduce the production costs， cost-effective increase. Now， the market gradually appeared in the blind reading aid， the product has a specific system， you can scan the print fonts， through the internal converter， converted into Braille， blind and then through the hand touch to read. How to design the speed， efficiency and accuracy of the blind reading aids products， this series of questions are the important part of this research and exploration， this article will be an important part of the study. From the following aspects to carry out positioning analysis：

Ⅰ.Environmental positioning analysis

For the blind to facilitate the use of blind reading aids， the blind use of it in the main use of the environment at home， libraries， supermarkets， study rooms and other places.And from the sales area， can be at home and abroad Dazhong Xiao urban areas and rural areas. As the blind have not received a high degree of education and training， so their level of cultural quality relative to the normal people is relatively low， the market Located in the middle and low consumer market.

Ⅱ.Functional positioning analysis

First of all， practicality in the blind reading aids to be reflected in the design， to take into account the blind reading books or articles to read the obstacles to meet the basic needs of listening.This blind reading aid can be stretched as needed to ensure that the largest scanning area and the smallest space volume. Second， controllability in the actual reading process will be reflected， when the reader to hear their own not interested in the section， which requires automatic adjustment button to control the reading content. Then， security in this design should be taken into account one of the factors to prevent damage caused by operational errors， to ensure user safety， to fulfill the \"people-oriented\" and \"barrier-free design\" concept.

Finally，comfort is the product design process must consider the factors， where the comfort of a multi-layer meaning， including economic， time-saving， easy to operate， easy maintenance and so on. Designers should design the product as much as possible to take into account the user experience， so that they fully enjoy the convenience of the product.

Ⅲ.Structural positioning analysis

The blind reading aid can be designed as a stretch structure. When working， turn on the switch， then put the blind reading aid on the open state.Put on the text you want to read， if the scanning of the text is more extensive， you can open place the extended part inside the reader. Readers through the internal specific system， scanning to identify printed text， and then through the product of the word converter into voice broadcast， and finally transmitted to the blind. At the same time read the auxiliary system to receive the picture read to the processor center， after binarization， grayscale and other pretreatment. This picture in the character recognition module of the Chinese character preprocessing after the picture positioning and identification of Chinese characters. Finally， to determine the sound of the text out to read the form of the module， so as to achieve the blind friends can also hear the effect of the picture.

Ⅳ.Material positioning analysis

Currently on the market of electronic products， shell materials， the general use of carbon fiber， magnesium alloy and aluminum alloy four kinds of materials. ABS plastic strength is low， the density is relatively small， so want to resist enough strength about 1.2mm thickness can be achieved. Magnesium alloy strength is high， so make the shell thin to 0.45mm. But the hardness of magnesium alloy is high， easy to process， so the cost and difficulty are relatively high. Aluminum alloy strength is relatively high， and the elastic coefficient is relatively large， so easy to make the product deformation of the situation. While the tensile strength， the thickness of the shell can be reduced to 0.8mm， not easy to deformation， wear and scratch resistance， production costs are not high， so the blind reading aid can be used aluminum alloy material， shape available aluminum alloy paint， paint， paint the processing technology， reduce the paint and wear.

Above is the blind reading aids product design positioning analysis. Any blind person， have equal participation in any social life and decision-making rights and obligations. And the realization of the legitimate rights and interests of persons with disabilities， especially the blind， is the duty of every social organization， every individual of society， that is， every member of society. Our citizens， who are physically well-behaved， should lead by example， and should assume the responsibility and obligation of knowledge assistance to the blind. Through effective knowledge and basic cultural knowledge to provide them with ways and means to solve the problem， and strive for the disabled to achieve equal access to knowledge and rights and opportunities. Because how to help the blind how to obtain useful professional knowledge， basic knowledge， cultural knowledge， and how to improve the blind's own literacy and accomplishment， whether to participate in social life on an equal footing for the disabled is both a problem of survival and national and social development issues.