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解決變電站RS485網(wǎng)絡(luò)不穩(wěn)定的基于ARM7RS485HUB集線器的研究

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1概述目前我局變電站已全部實(shí)現(xiàn)綜合自動(dòng)化,遠(yuǎn)動(dòng)站端設(shè)備的通信網(wǎng)絡(luò)大多還采用支持多節(jié)點(diǎn)遠(yuǎn)距離通信的RS-485總線。隨著經(jīng)濟(jì)的發(fā)展,用電量增加,變電站內(nèi)智能化設(shè)備將隨之增加,這樣變電站的RS-485系統(tǒng)也會(huì)越發(fā)龐大,再加上變電站強(qiáng)電磁干擾下的復(fù)雜惡劣的電磁環(huán)境,勢(shì)必使RS-485通信網(wǎng)絡(luò)的穩(wěn)定性面臨嚴(yán)峻的考驗(yàn)。從我們遠(yuǎn)動(dòng)維護(hù)的實(shí)際經(jīng)驗(yàn)來(lái)看,485總線傳輸?shù)膿矶?、阻塞及不穩(wěn)定是綜自系統(tǒng)站端最大的安全隱患之一,基于ARM7的RS485HUB的研究能夠很好的解決RS-485通信網(wǎng)絡(luò)的穩(wěn)定性問(wèn)題。

rs485電纜制作

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Introduction to RS485 RS232 , RS422 , RS423 and RS485 are serial communication methods for computers and devices. RS232 is without doubt the best known interface, because this serial interface is implemented on almost all computers available today. But some of the other interfaces are certainly interesting because they can be used in situations where RS232 is not appropriate. We will conce

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