在進行系統方案設計時，考慮到以后系統的擴展及有關部門需求的增加，沒有采用集中式的主機系統結構，決定用網絡結構，以便擴充和設備的更新;進行網絡選型論證時，考慮到系統擴充及維護的簡易性，決定選用總線形結構的網絡：為了提高系統的穩定性、可靠性，沒有采用單主機總線網絡結構，采用多主機網絡總線結構。

廈門岳航計算機工程有限公司

聯系人：李素云

企業QQ：2851195446，2851195466

手機：18965423501

座機：0592-5165501

采用多主機分布式監測方式，它具有以下特點：

適應能力強，可以通過選用適當數量的上位機和數據采集站來構成相應規模的系統，便于擴展。

可靠性高，某個主機或采集站出現故障，不會對系統的其他主機或采集站造成影響。當一個采集站出現故障時，只影響本采集站的功能。當一個主機出現故障時，可由其他主機“代管”。

實時響應性好，各個數據采集站之間是真正“并行”工作，因此，系統的實時響應性好。

與單主機監測系統相比，不易造成“瓶頸”現象。

整個系統上位機選用工控機，下位機選用智能測控前端，每臺上位機配有1臺UPS，主控室和集控室分別配1臺打印機。系統總體結構如圖1所示。

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