短距离无线数据传输系统的设计
发布时间：2018-11-27 21:07
【摘要】：无线数据传输是在有线数据传输的基础上,通过射频技术实现无线数据传输,为数据传输的无线化,移动化,数字化提供了快捷方便的渠道,是数据传输的有效手段和应用广泛的技术。 现今,市面上无线数据传输的产品传输距离可以达到数十米到几百米,从产品的成本、性能、应用场合、功耗等方面来看具有很高的应用价值和广阔的前景,但现今市场上的无线数据传输产品普遍存在着成本高、传输距离短、性能不稳定和抗干扰能力不强等缺点,如何实现低成本、高性能和传输距离远的无线数据传输系统是一项具有挑战意义的工作。 论文拟解决现今数据传输产品的传输距离短、成本高、性能不稳定等问题,提出了一种基于μC/OS-Ⅲ操作系统,使用基于ARM Cortex-M3架构的处理器STM32,采用DPMR数字对讲机协议标准的通信协议,来实现短距离无线数据传输的方案设计。 论文首先讨论了无线数据传输的工作原理,设计出无线数据传输系统的总体架构框图,详细阐述了硬件各模块电路的设计,包括控制电路设计、射频收发电路设计、功率放大电路设计和射频收发切换电路设计等。 其次,对软件设计进行阐述,提出了软件设计的总体架构框图,对μC/OS-Ⅲ操作系统和DPMR协议进行了概述,并对系统软件进行分层设计,详细介绍了应用层AT指令的设计,中间层控制协议、串口收发处理和RF收发处理的实现,和底层射频收发器CC1125的驱动设计。 最后,把整个μC/OS-III操作系统移植到自主设计的数传模块硬件平台上,并对系统进行综合测试,达到了预期系统性能设计指标,实现了最大发射功率达到1W、邻道抑制达到-60dBm,通信距离达到1km的性能良好的短距离无线数据传输系统。
[Abstract]:Wireless data transmission is based on wired data transmission, through radio frequency technology to achieve wireless data transmission, for the data transmission of wireless, mobile, digital to provide a quick and convenient channel, Is the effective means of data transmission and widely used technology. Nowadays, the distance of wireless data transmission products on the market can reach tens to hundreds of meters. It has high application value and broad prospect in terms of product cost, performance, application situation, power consumption and so on. However, the wireless data transmission products in the market nowadays have many disadvantages, such as high cost, short transmission distance, unstable performance and weak anti-interference ability. Wireless data transmission system with high performance and long transmission distance is a challenging task. In this paper, the problems of short transmission distance, high cost and unstable performance of data transmission products are solved. A processor STM32, based on 渭 C / OS- 鈪，
本文编号：2362036
[Abstract]:Wireless data transmission is based on wired data transmission, through radio frequency technology to achieve wireless data transmission, for the data transmission of wireless, mobile, digital to provide a quick and convenient channel, Is the effective means of data transmission and widely used technology. Nowadays, the distance of wireless data transmission products on the market can reach tens to hundreds of meters. It has high application value and broad prospect in terms of product cost, performance, application situation, power consumption and so on. However, the wireless data transmission products in the market nowadays have many disadvantages, such as high cost, short transmission distance, unstable performance and weak anti-interference ability. Wireless data transmission system with high performance and long transmission distance is a challenging task. In this paper, the problems of short transmission distance, high cost and unstable performance of data transmission products are solved. A processor STM32, based on 渭 C / OS- 鈪，
本文编号：2362036
本文链接：https://www.wllwen.com/kejilunwen/wltx/2362036.html
