-RTK GPS板卡驱动电路设计与开发

本科毕业设计

RTK GPS板卡驱动电路设计与开发

摘 要

自从GPS问世以来，就以其高精度，全天候，全球覆盖，方便灵活和优质价廉吸引了全世界许多用户。目前，国内GPS应用发展势头迅猛，短短几年间，GPS在我国的应用已经从少数科研单位和军用部门迅速扩展到各个民用领域，GPS的广泛应用改变了人们的工作方式，提高了工作效率，带来了巨大的经济效益，具有广阔的应用前景。Trimble BD970 GNSS接收模块作为在GNSS领域的Trimble公司最新技术，应用于装备原始设备制造商和系统集成，是一款紧凑型的多星座模块，专为满足各种精确到厘米级的定位精度应用需求而设计。

本文阐述了能够测试Trimble BD970 GNSS接收模块的功能的驱动电路板的设计原理。此驱动电路板主要由电源模块，串口通信模块和LED提示模块组成。通过此驱动电路板，能够实现上位机与Trimble BD970 GNSS接收模块的通信，对Trimble BD970 GNSS接收模块的定位输出、差分输入、LED指示等功能进行方便测试。

关键词：GPS GNSS 驱动电路功能测试

The Driver Circuit Design Of Trimble BD970 GNSS Receiver Module

Yang Lijian

（College of Science, South China Agricultural University， Guangzhou 510642，China） Abstract:Since the advent of GPS, with its high precision, all-weather, global coverage, convenient and flexible and the high quality and low price to attract many users around the world. At present, the domestic GPS application development momentum is swift and violent, in just a few years, the applications of GPS in our country have from a small number of scientific research units and military departments quickly spread to the civilian sector, GPS is widely used to change the way people work, improve work efficiency, brought huge economic benefits, has broad application prospects. Trimble BD970 GNSS receiver module as Trimble refused company the latest technology in the field of GNSS, applied to original equipment manufacturers and system integration equipment, is a more compact constellation modules, designed to meet all kinds of precise positioning to the centimeter level accuracy application requirements and design.

It is expounded in this article to test Trimble BD970 GNSS receiver module function of the drive backplane design principle of the drive plate is mainly composed of power supply module, serial communication module and LED prompt module through the drive plate, can realize the upper machine with TrimbleBD970 GNSS receiver module of communication, the Trimble BD970 GNSS receiver module positioning output differential input LED indicator functions such as convenient to test.

Key words:GPS GNSS Drive Circuit Functional Test

目 录

1 前言 ........................................................................................................................................ 1 1.1 全球定位系统系统简介 ..................................................................................................... 1 1.2 国外其他全球定位系统简介 ............................................................................................. 2 1.2.1 格洛纳斯全球导航卫星系统 .......................................................................................... 2 1.2.2 伽利略卫星定位系统 ...................................................................................................... 3 1.3 中国北斗卫星导航定位系统 ............................................................................................. 3 1.4 GPS产品的应用现状 ........................................................................................................ 5 1.4.1 GPS芯片组的应用现状 ................................................................................................. 5 1.4.2 GPS模块的应用现状 ..................................................................................................... 6 1.4.3 GPS接收机的应用现状 ................................................................................................. 6 2 Trimble BD970 GNSS接收模块的功能与硬件接口 .......................................................... 8 2.1 Trimble BD970 GNSS接收模块的定位规格 ................................................................... 9 2.2 Trimble BD970 GNSS接收模块各排针功能 ................................................................... 9 2.3 NMEA-0183标准协议简介 ............................................................................................. 11 3 驱动电路设计理论分析及元件选择 .................................................................................. 11 3.1 驱动电路排座接口 ........................................................................................................... 12 3.2 电源模块 ........................................................................................................................... 13 3.2.1 220V转换5V电路 ....................................................................................................... 13 3.2.2 9V转换3.3V电路 ........................................................................................................ 14 3.3 串口通信电路 ................................................................................................................... 15 3.4 LED驱动支持电路 .......................................................................................................... 16 4 驱动电路板制作与测试分析 .............................................................................................. 18 4.1 电路板焊接 ....................................................................................................................... 18 4.2 电路板调试 ....................................................................................................................... 20 4.3 电路板测试与分析 ........................................................................................................... 20 5 结论 ...................................................................................................................................... 21 参考文献 .................................. …… 此处隐藏：14093字，全部文档内容请下载后查看。喜欢就下载吧 ……