本文介紹了RS-232 串行總線(xiàn)及USB 通用串行總線(xiàn)技術(shù)，討論了其抗干擾性，分析了串口出現(xiàn)誤碼及USB 接口出現(xiàn)死鎖現(xiàn)象的原因，提出了一種強(qiáng)干擾下數(shù)據(jù)采集系統(tǒng)穩(wěn)定通訊的解決方案。使用RS-232 傳送指令，USB 傳送采集數(shù)據(jù)，當(dāng)監(jiān)測(cè)到通訊死鎖時(shí)，通過(guò)指令控制USB 接口重新初始化，保證了強(qiáng)干擾下通訊的穩(wěn)定可靠性。
關(guān)鍵字：通訊；RS-232；USB；穩(wěn)定性
Abstract: This paper introduces the technology of RS-232 serial bus and the universal serial bus, discusses its anti-jamming, analyzes the reason of serial port producing error code and the USB deadlock phenomenon, proposes a solution of stable communication in data acquisition system under strong interference. Uses the RS-232 sending instruction, the USB sending acquisition data, when the communication deadlocks, initializes USB interface by the instruction, ensures the stability of communication under strong interference.
Key Words: communication; RS-232; USB; stability