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摘要
北斗全体系的建设开始于1994年，在20年来技术持续迭代、高精度卫星相继升空的背景下，2020年3月19日19时55分，第54颗北斗导航定位卫星到达太空，我国北斗基本形成了覆盖全球的服务能力。交通行业是北斗体系在公开层面最核心的应用场景，由于体系初成，我国北斗在部分方面的应用还不成熟，但可以预期北斗系统能带给我们的是交通事故率的大幅度的降低、星罗密布的运输线路变得有条不紊。
基于北斗卫星定位的预警系统的设计目的就是为了进一步的探索我国北斗系统在道路运输行业的应用所具有的巨大潜力。本设计基于STM32和北斗模块的基本知识，在简单一对一导航的基础上拓展多点位间的相对距离预警，点位间通信采用Zigbee无线传输，在相对距离过大时由GSM模块和指示灯向用户发出预警，藉此将野外运输的风险率控制在较低水平。
关键词： 北斗；GSM；相对距离；预警
The early warning system based on Beidou satellite positioning
Abstract
The construction of the Beidou system began in 1994, and over the past 20 years, the technology has continued to iterate and high-precision satellites have been launched at 19:55 on March 19, 2020, the 54th positioning satellite arrived in space, and China's Beidou basically formed a global service capability.The transportation industry is the core application scenario of Beidou system at the public level. Due to the early completion of the system, the application of Beidou system in this aspect is not yet mature, but it can be expected that the Beidou system will bring us a substantial reduction in the traffic accident rate and orderly transportation lines with dense network.
The early warning system based on Beidou satellite positioning is designed to further explore the great potential of China's Beidou system in the road transport industry. This graduation design is based on the basic knowledge of the STM32 and beidou module, on the basis of simple one-to-one navigation to expand more point early warning, the relative distance between the point communication using Zigbee wireless transmission, all point by Beidou positioning data to calculate the relative distance, when the relative distance is too large by GSM module and light warning, whereby the wild transport rate control in the low level of risk.
Keywords: Beidou; GSM; Relative distance; warning
目录
1 预警系统介绍 ..................................................................... 1
1.1 我国北斗体系的发展史及现状 ................................................. 1 1.2 北斗系统的主要应用场景 ..................................................... 2 1.3 北斗标准与国际接轨 ......................................................... 3
1.4 现阶段的不足 .......................................................... 4
2 预警系统创新点和系统构成 .......................................................... 5
2.1 局域监控与北斗体系互补 ................................................ 5 2.2 预警系统构成 .......................................................... 5
3 预警系统的硬件 ................................................................... 8
3.1 BDS/GNSS全星座定位导航模块 ................................................. 8
3.1.1 型号选择 ............................................................ 8 3.1.2 A-GNSS与Flash ...................................................... 9 3.1.3 注意事项 ............................................................ 9 3.2 ARM公司及STM32的简介 .................................................... 10
3.2.1 ARM公司及STM32的基本知识 .......................................... 10 3.2.2 STM32的数据传输和固件库使用 ........................................ 10 3.3 GSM和Zigbee模块 ......................................................... 11
3.3.1 GSM模块 ............................................................ 11 3.3.2 Zigbee无线模块 ..................................................... 13 3.4 OLED的选用原因及参数 ..................................................... 14 4 预警功能的实现 .................................................................. 15
4.1 北斗定位模块的使用 ........................................................ 15 4.2 相对距离的计算 ............................................................ 18 4.3 OLED ...................................................................... 20 4.4 GSM报警 .................................................................. 22 4.5 原理图和整体实物图 ........................................................ 23 参考文献 .......................................................................... 25 总结及感谢 ........................................................................ 26
基于北斗卫星定位的预警系统-毕业论文
