CAJ | 학술논문

为了便于对公路的维护与保养，需要一款具有通信功能的移动设备，提出了基于高速公路网的对讲终端的解决方案，在服务端采用嵌入式LINUX平台，利用ALSA数字音频接口，结合麦克风采集原始PCM音频数据，采用G726标准进行音频编解码，采用RTP／RTCP协议，基于wifi实现音频的网络传输。在用户端用支持LINUX系统的PC对音频数据进行编解码，播放。该方案的终端基于高速公路现有网络，具有移动性，经济性，且语音清晰，实时性好。
위료편우대공로적유호여보양，수요일관구유통신공능적이동설비，제출료기우고속공로망적대강종단적해결방안，재복무단채용감입식LINUX평태，이용ALSA수자음빈접구，결합맥극풍채집원시PCM음빈수거，채용G726표준진행음빈편해마，채용RTP／RTCP협의，기우wifi실현음빈적망락전수。재용호단용지지LINUX계통적PC대음빈수거진행편해마，파방。해방안적종단기우고속공로현유망락，구유이동성，경제성，차어음청석，실시성호。
In order to maintain and repair the road, a kind of mobile devices with communi-cation function is necessary.The solution which is based on the highway network intercom terminal was proposed.Used the embedded LINUX platform on the service side, ALSA digit-al audio interface, standard G726 to realize audio codec and used RTP /RTCP protocol based on wifi to realize network transmission of audio.In the client-to-use, the PC which can support LINUX system was used to code and decode the audio and play it.The terminal of the solution was based on the existing highway network and it has the advantages of mobili-ty, economy, clear voice and real time.