摘要据世界权威部门统计，中国目前约有600万盲人，占全世界的盲人总数的20%，每一年大概有50万人失去光明，也就是说每分钟就会出现一个盲人。专家计算到2020年，中国盲人人数将达到2200万[1]。盲人因为自身的视力限制，出门之后十分不便，遇到危险的系数很高。一般的导盲手段有导盲手拐杖、导盲犬。手杖导盲虽然方便、造价低，但稳定性不高,容易忽略一些障碍物的存在；而导盲犬成本高，使用不方便。导盲类的仿真机器人只能在特定平坦的路面使用。基于GPS的智能导盲仪不仅可以帮助盲人在无需特定人员的陪伴下，完成安全的外出行走，并且该系统具有便捷、强大功能、智能化、操作简单等优点。76700

本设计课题主要研究基于单片机设计的智能导盲定位系统，软硬件要求做到智能、成本低、操作简单。利用超声波测距原理、GPS定位原理和GSM通信原理，电路主要包括核心控制电路、超声波测距避障电路、GPS与GSM模块电路、以及语音播放电路。软件程序设计主要包括单片机复位、串口通信程序、GPS数据提取程序等。

该论文有图18幅，表3个，参考文献25篇。

毕业论文关键词：STC89C52  GPS模块  超声波测距  GSM短信模块  智能导盲 

The design of intelligent guide system based on GPS

Abstract According to the World authoritative statistics, China currently has about six million blind people, 20% of the total number of blind people worldwide, every year about 50 million people lost light, which means that there will be a blind every minute。 Experts calculate that by 2020, China will reach 22 million the number of blind people [1]。 Blind because of their vision restrictions, then go out very inconvenient, subject to high risk factor。 It means there is a general guide the blind lead the blind hand crutches, guide dogs。 Cane seeing although convenient, low cost, but the stability is not high, easy to overlook some obstacles; guide dogs and the high cost, inconvenient to use。 Simulation robot guide blind kind of use only in specific flat surface。 GPS-based smart meter can not only help the blind lead the blind in particular without accompanying staff, secure walk out, and the system has a convenient, powerful, intelligent, and easy operation。

The design issues mainly based on single-chip design of intelligent positioning systems guide the blind, hardware and software required to achieve intelligent, low cost, simple operation。 Use of ultrasonic ranging principle, GPS positioning and GSM communication theory principles, core circuit includes a control circuit, ultrasonic distance measurement obstacle avoidance circuit, GPS and GSM module circuits, and voice broadcast circuit。 Software program includes microcontroller reset serial communication procedures, GPS data extraction procedures,etc。。

The papers Figure 18, Table 3, reference 25。

Key Words: STC89C52  GPS  GSM  Ultrasonic distance measurement  Module  guide

目  录

摘  要 I

Abstract II

目  录 III

图清单 V

表清单 V

变量注释表 V

1 绪论 6

1。1 课题研究的背景及意义 1

1。2 国内外研究现状 2

1。3 课题研究目标与要求 3

2 系统功能方案设计分析论证 4

2。1 系统功能设计