【摘要】：無線數(shù)據(jù)傳輸是在有線數(shù)據(jù)傳輸?shù)幕A(chǔ)上,通過射頻技術(shù)實(shí)現(xiàn)無線數(shù)據(jù)傳輸,為數(shù)據(jù)傳輸?shù)臒o線化,移動化,數(shù)字化提供了快捷方便的渠道,是數(shù)據(jù)傳輸?shù)挠行侄魏蛻?yīng)用廣泛的技術(shù)。 現(xiàn)今,市面上無線數(shù)據(jù)傳輸?shù)漠a(chǎn)品傳輸距離可以達(dá)到數(shù)十米到幾百米,從產(chǎn)品的成本、性能、應(yīng)用場合、功耗等方面來看具有很高的應(yīng)用價(jià)值和廣闊的前景,但現(xiàn)今市場上的無線數(shù)據(jù)傳輸產(chǎn)品普遍存在著成本高、傳輸距離短、性能不穩(wěn)定和抗干擾能力不強(qiáng)等缺點(diǎn),如何實(shí)現(xiàn)低成本、高性能和傳輸距離遠(yuǎn)的無線數(shù)據(jù)傳輸系統(tǒng)是一項(xiàng)具有挑戰(zhàn)意義的工作。 論文擬解決現(xiàn)今數(shù)據(jù)傳輸產(chǎn)品的傳輸距離短、成本高、性能不穩(wěn)定等問題,提出了一種基于μC/OS-Ⅲ操作系統(tǒng),使用基于ARM Cortex-M3架構(gòu)的處理器STM32,采用DPMR數(shù)字對講機(jī)協(xié)議標(biāo)準(zhǔn)的通信協(xié)議,來實(shí)現(xiàn)短距離無線數(shù)據(jù)傳輸?shù)姆桨冈O(shè)計(jì)。 論文首先討論了無線數(shù)據(jù)傳輸?shù)墓ぷ髟?設(shè)計(jì)出無線數(shù)據(jù)傳輸系統(tǒng)的總體架構(gòu)框圖,詳細(xì)闡述了硬件各模塊電路的設(shè)計(jì),包括控制電路設(shè)計(jì)、射頻收發(fā)電路設(shè)計(jì)、功率放大電路設(shè)計(jì)和射頻收發(fā)切換電路設(shè)計(jì)等。 其次,對軟件設(shè)計(jì)進(jìn)行闡述,提出了軟件設(shè)計(jì)的總體架構(gòu)框圖,對μC/OS-Ⅲ操作系統(tǒng)和DPMR協(xié)議進(jìn)行了概述,并對系統(tǒng)軟件進(jìn)行分層設(shè)計(jì),詳細(xì)介紹了應(yīng)用層AT指令的設(shè)計(jì),中間層控制協(xié)議、串口收發(fā)處理和RF收發(fā)處理的實(shí)現(xiàn),和底層射頻收發(fā)器CC1125的驅(qū)動設(shè)計(jì)。 最后,把整個(gè)μC/OS-III操作系統(tǒng)移植到自主設(shè)計(jì)的數(shù)傳模塊硬件平臺上,并對系統(tǒng)進(jìn)行綜合測試,達(dá)到了預(yù)期系統(tǒng)性能設(shè)計(jì)指標(biāo),實(shí)現(xiàn)了最大發(fā)射功率達(dá)到1W、鄰道抑制達(dá)到-60dBm,通信距離達(dá)到1km的性能良好的短距離無線數(shù)據(jù)傳輸系統(tǒng)。
[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，

本文編號：2362036