控制器局域網(wǎng)絡(luò)的音頻信號傳輸

控制器局域網(wǎng)絡(luò)(CAN)是實時嵌入式系統(tǒng)中傳輸短報文的串行通信協(xié)議，其通訊最高速率可達1Mbit/s。CAN 在傳輸實時數(shù)據(jù)中有大量的應(yīng)用，但在傳輸音頻流上并未普及。針對在CAN 總線上除了發(fā)送報文同時開通音頻信道而具有的優(yōu)點，舉例說明了在系統(tǒng)帶寬上引入音頻信道的效果。
關(guān)鍵詞：CAN；嵌入式系統(tǒng)；音頻信道
Abstract: The controller area network (CAN) is a serial communications protocol for transmitting short control messages in real time embedded system and can operate at speeds of up to 1Mbit/s. There are numerous applications of CAN carrying real-time data. However CAN has still not become popular carrying voice streams. In addition to control information, a voice channel running on the same bus may have several advantages. This paper presents and illustrates the effects of introducing a voice channel on the system bandwidth.
Keywords: CAN；embedded system；voice channel