电子设计工程
電子設計工程
전자설계공정
ELECTRONIC DESIGN ENGINEERING
2012年
21期
166-168
,共3页
转换式RS485隔离器%总线式RS485隔离器%脉冲变压器%脉冲宽度%过渡时间%波特率
轉換式RS485隔離器%總線式RS485隔離器%脈遲變壓器%脈遲寬度%過渡時間%波特率
전환식RS485격리기%총선식RS485격리기%맥충변압기%맥충관도%과도시간%파특솔
transformation type RS485 isolation coupler%bus type RS485 isolation coupler%pulse transformer%pulsewidth%transition time%baud rate
为简化总线式RS485隔离器的设计，提出基于脉冲变压器的总线式RS485隔离器的技术方案。该方案具有简单实用、无需电源、无需考虑数据流向、在有限范围内波特率自适应、底层用户群体易于理解和掌控等特点。给出了基本实验电路和脉冲变压器的主要设计依据。基于脉冲变压器的总线式RS485隔离器．尤其适合工业环境下半双工的A、B两线制RS485通信网的升级改造，其基本思想也适用于全双工的W、X、Y、Z四线制RS485／RS422通信网。
為簡化總線式RS485隔離器的設計，提齣基于脈遲變壓器的總線式RS485隔離器的技術方案。該方案具有簡單實用、無需電源、無需攷慮數據流嚮、在有限範圍內波特率自適應、底層用戶群體易于理解和掌控等特點。給齣瞭基本實驗電路和脈遲變壓器的主要設計依據。基于脈遲變壓器的總線式RS485隔離器．尤其適閤工業環境下半雙工的A、B兩線製RS485通信網的升級改造，其基本思想也適用于全雙工的W、X、Y、Z四線製RS485／RS422通信網。
위간화총선식RS485격리기적설계，제출기우맥충변압기적총선식RS485격리기적기술방안。해방안구유간단실용、무수전원、무수고필수거류향、재유한범위내파특솔자괄응、저층용호군체역우리해화장공등특점。급출료기본실험전로화맥충변압기적주요설계의거。기우맥충변압기적총선식RS485격리기．우기괄합공업배경하반쌍공적A、B량선제RS485통신망적승급개조，기기본사상야괄용우전쌍공적W、X、Y、Z사선제RS485／RS422통신망。
In order to simplify the design, proposes the bus type RS485 isolation coupler based on the pulse transformer. This plan's characteristics are simple, practical, do not need the power source, not to need to consider the data direction, the automatic adaptation limited range baud rate, the RS485 network user community understand easily and the control, and so on. In the article has publicized the basic experiment electric circuit and the pulse transformer's main design basis. Especially under the industry environment, this plan can improve the half-duplex A, B the two-wire system RS485 communications network. Its basic philosophy is also suitable for full-duplex W, X, Y, Z the four-wire system RS485/RS422 communications network.
