Intelligent blind guiding system based on high precision positioning

Abstract

An intelligent blind guiding system based on high precision positioning comprises four parts such as an intelligent blind guiding call center, a high precision GPS receiver, a high precision urban road space database and an intelligent blind guiding instrument; wherein, the intelligent blind guiding call center internally establishes the connection with the high precision urban road space database and externally establishes the connection with the intelligent blind guiding instrument; the high precision GPS receiver is in charge of receiving GPS satellite signals and resolving high precision latitude and longitude position data and establishes the connection with the intelligent blind guiding instrument by bluetooth communication; the intelligent blind guiding instrument establishes connection with the intelligent blind guiding call center by CDMA communication; the intelligent blind guiding call center can receive the intelligent blind guiding instrument and conduct call and answer in a wireless manner. The system adopts high precision positioning to obtain the positioning data of blind persons, forms pertinent blind guiding information by data processing, conducts broadcasting in the form of speech engine and provides blind persons with omnibearing, accurate and specific blind guiding services in terms of trip.

Description

(1) Technical field: [0001] The invention relates to an intelligent blind-guiding system based on high-precision positioning, which can provide all-round, specific and accurate blind-guiding services for the travel of blind friends. It belongs to the field of information engineering technology. (two) background technology: [0002] Due to the lack of vision, travel problems have always been one of the important problems plaguing the blind or visually impaired. How to provide an effective blind-guiding method or system to provide precise and specific guidance for the travel of blind friends has always been the focus of attention in society and the focus of research by researchers. [0003] In the traditional blind guide method, the blind need to be guided by others or guide dogs; or find a familiar location along the blind path or fixed track. This traditional method has relatively large limitations, and cannot provide effective guidance when the blind person needs to go to...

AI Technical Summary

Problems solved by technology

However, these methods can only solve problems in a certain aspect within a certain range at present, and cannot form an effective overall blind-guiding system to provide accurate and specific blind-guiding services for the blind.

And, these blind-guiding systems themselves also have certain defects and limitations

For example, in the method of guiding the blind along the trajectory, the functions of blind passages and fixed passages are fully utilized, combined with the coordinate positioning method to guide blind people to reach their destinations, but this method must have blind passages or fixed passages to ensure that blind people are always in blind passages or fixed passages Upward walking has great limitations; at the same time, the accuracy of the coordinate positioning method is not high enough to achieve high-precision positioning, so the guide information provided is not accurate enough

For another example, in the invention of the voice-based blind guide device, a scheme of providing guidance for the blind through voice is proposed, but it is not clearly proposed how to obtain effective guide information for voice playback, that is, without accurate positioning information, it is impossible to accurately judge the blind position, it is impossible to give accurate guiding information, and precise guiding is out of the question.

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