盲人出行問題一直困擾著盲人的一生,如何安全準(zhǔn)確地幫助盲人安全準(zhǔn)確地到達目的地?本系統(tǒng)目的在于提供一種基于RFID的手持式盲人導(dǎo)航系統(tǒng),旨在解決現(xiàn)有的盲人導(dǎo)航系統(tǒng)不能夠準(zhǔn)確、安全的為盲人導(dǎo)航的問題。利用物聯(lián)網(wǎng)平臺下的RFID技術(shù),將道路存儲在電子標(biāo)簽,再轉(zhuǎn)換成相應(yīng)的語音提示信息,從而實現(xiàn)為盲人提供精確,安全的導(dǎo)航,解決盲人的出行問題。
本文論述了以PXA270為主控模塊、以RFID為核心技術(shù)、以物聯(lián)網(wǎng)為平臺的手持式盲人導(dǎo)航系統(tǒng)。該系統(tǒng)針對盲人出行不便而研發(fā)的一款協(xié)助盲人能自行方便到達目的地的綜合系統(tǒng)。該系統(tǒng)集RFID導(dǎo)航、盲人輸入法、智能路況識別、外部數(shù)據(jù)采集、語音提示、手機、無線傳輸、全球定位等功能于一體。
本文主要論述了基于RFID的盲人導(dǎo)航系統(tǒng)手持終端設(shè)計與實現(xiàn),其主要包括在主控平臺上的盲人鍵盤的設(shè)計,語音提示,手機功能實現(xiàn)。整個系統(tǒng)包含多個處理器,在主控模塊的控制下并行高效的工作。軟件系統(tǒng)基于Linux操作系統(tǒng),采用多線程的編程模式,確保了系統(tǒng)的實時性和可靠性。
關(guān)鍵詞:物聯(lián)網(wǎng) RFID 盲人導(dǎo)航 PXA270
Blind navigation system based on RFID handset
design and implementation
ABSTRACT
Travel has been plagued by blind blind life, how to safely and accurately to help blind people reach their destinations safely and accurately? The system aims to provide a hand held RFID-based navigation system for the blind, blind to resolve the existing navigation systems can not accurately and safe for the blind navigation problems. Things platform using the RFID technology, the road is stored in the electronic tags, converted to the corresponding voice message in order to achieve for the blind to provide accurate and safe navigation, to solve the blind travel problems. This article discusses the PXA270 as the main control module to RFID as a core technology platform of things as hand-held navigation system for the blind. The system is inconvenient for the blind developed for a trip to help the blind to its own comprehensive system for easy access to the destination. The system combines RFID navigation, blind input, intelligent traffic identification, external data acquisition, voice prompts, phone, wireless transmission, global positioning and other functions. This article discusses the blind navigation system based on RFID handset design and implementation, and its main host platforms, including the blind in the design of the keyboard, voice prompts, phone functions to achieve. The system contains multiple processors, in parallel under the control of main control module and efficient work. Software system based on Linux operating system, using multi-threaded programming model to ensure that the system of real-time and reliability
Key words:Internet of Things RFID Blind Navigation PXA270