基于nRF2401软件跳频协议的设计与实现  

The design and realization of spread-spectrum protocol of adaptive frequency-hopping software based on nRF2401

作　　者：孙保群[1] 王琼[2] 

机构地区：[1]合肥工业大学汽车工程技术研究院,安徽合肥230009 [2]合肥工业大学计算机与信息学院,安徽合肥230009

出　　处：《电子技术应用》2012年第5期46-48,51,共4页Application of Electronic Technique

摘　　要：为解决射频收发器NRF2401在ISM频段内同频干扰,提高无线通信系统的通信质量和可靠性,提出了一种软件自适应跳频扩频协议。该协议充分利用nRF2401射频芯片多频点特性,使用软件程序设计将125个间隔为1 MHz的频道分成低、中、高三个频段,在无线信道受阻或同频干扰时,依据"低频-中频-高频"的循环顺序进行频道跳变。实验结果表明,工程机械仪表无线显示系统采用这种软件扩频协议设计,可以有效避免同频干扰和多点传输干扰,提高系统传输可靠性。An adaptive frequency-hopping spread-spectrum software protocol, based on a chip of radio frequency nRF2401 with the characteristic of many channels, is proposed for the purpose of avoiding nRF2401 being interfered by other wireless chan- nels with the same frequency in ISM band, and improving quality and reliability of wireless communication system. This protocol di- vides 125 frequency channels for 1MHz interval into three of low, middle, and high frequency bands, and would make full use of this chip＇s characteristics and carry on the channel jump circularly by ＂low-middle-high＂ band. Laboratory resuhs demonstrate that the system, engineering mechanical instrument based on wireless display, with this protocol can avoid effectively same frequency and multi-spot transmitting disturbances, and can ensure the reliable wireless data transmitting among of engineering machineries.

关 键 词：NRF2401 自适应跳频 扩频通信 抗干扰 

分 类 号：TN925[电子电信—通信与信息系统]