【摘要】：無線數(shù)據傳輸是在有線數(shù)據傳輸?shù)幕A上,通過射頻技術實現(xiàn)無線數(shù)據傳輸,為數(shù)據傳輸?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)據傳輸?shù)挠行侄魏蛻脧V泛的技術。 現(xiàn)今,市面上無線數(shù)據傳輸?shù)漠a品傳輸距離可以達到數(shù)十米到幾百米,從產品的成本、性能、應用場合、功耗等方面來看具有很高的應用價值和廣闊的前景,但現(xiàn)今市場上的無線數(shù)據傳輸產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等缺點,如何實現(xiàn)低成本、高性能和傳輸距離遠的無線數(shù)據傳輸系統(tǒng)是一項具有挑戰(zhàn)意義的工作。 論文擬解決現(xiàn)今數(shù)據傳輸產品的傳輸距離短、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架構的處理器STM32,采用DPMR數(shù)字對講機協(xié)議標準的通信協(xié)議,來實現(xiàn)短距離無線數(shù)據傳輸?shù)姆桨冈O計。 論文首先討論了無線數(shù)據傳輸?shù)墓ぷ髟?設計出無線數(shù)據傳輸系統(tǒng)的總體架構框圖,詳細闡述了硬件各模塊電路的設計,包括控制電路設計、射頻收發(fā)電路設計、功率放大電路設計和射頻收發(fā)切換電路設計等。 其次,對軟件設計進行闡述,提出了軟件設計的總體架構框圖,對μC/OS-Ⅲ操作系統(tǒng)和DPMR協(xié)議進行了概述,并對系統(tǒng)軟件進行分層設計,詳細介紹了應用層AT指令的設計,中間層控制協(xié)議、串口收發(fā)處理和RF收發(fā)處理的實現(xiàn),和底層射頻收發(fā)器CC1125的驅動設計。 最后,把整個μC/OS-III操作系統(tǒng)移植到自主設計的數(shù)傳模塊硬件平臺上,并對系統(tǒng)進行綜合測試,達到了預期系統(tǒng)性能設計指標,實現(xiàn)了最大發(fā)射功率達到1W、鄰道抑制達到-60dBm,通信距離達到1km的性能良好的短距離無線數(shù)據傳輸系統(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