基于DMR協(xié)議的數(shù)字對講機研究與設計

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doi：10.3969/J.ISSN.1672-7274.2025.06.004

中圖分類號：TN929.54 文獻標志碼：B 文章編碼：1672-7274（2025）06-0010-03

Research and Design ofDigital Radio Based onDMR Protocol

CHENXianwu

（Quanzhou Wurui Electronic Technology Co.，Ltd.，Quanzhou 362302，China

Abstract： This article focuses on theresearch and design of digital walkie talkies based on the DMR protocol. The DMR protocol stack software and application layer software are implemented on hardware platforms such as STM32 microcontroller，HR_C5000 baseband chip，and AMBE3000 encoder，and the RF circuit is constructed using a digital phase-locked loop chip.In addition，a background positioning system based on GPS/Beidou navigation has beendesigned，whichconnectsthedigitalwalkie talkieandPCthrough USBtoserial port，realizing the transmission of positioningdata between walkie talkies.Thetestresults have verified the feasibilityand effectivenessof the design， providing reference for the further development of digital walkie talkies.

Keywords： DMR protocol; digital intercom; STM32; GPS/Beidou navigation system; RF circuit

對講機作為一種短距離無線通信設備，廣泛應用于政府機關、制造業(yè)、采礦業(yè)及服務業(yè)等多個行業(yè)[1]。（剩余4149字）