在進(jìn)行系統(tǒng)方案設(shè)計(jì)時(shí)，考慮到以后系統(tǒng)的擴(kuò)展及有關(guān)部門需求的增加，沒(méi)有采用集中式的主機(jī)系統(tǒng)結(jié)構(gòu)，決定用網(wǎng)絡(luò)結(jié)構(gòu)，以便擴(kuò)充和設(shè)備的更新;進(jìn)行網(wǎng)絡(luò)選型論證時(shí)，考慮到系統(tǒng)擴(kuò)充及維護(hù)的簡(jiǎn)易性，決定選用總線形結(jié)構(gòu)的網(wǎng)絡(luò)：為了提高系統(tǒng)的穩(wěn)定性、可靠性，沒(méi)有采用單主機(jī)總線網(wǎng)絡(luò)結(jié)構(gòu)，采用多主機(jī)網(wǎng)絡(luò)總線結(jié)構(gòu)。F7133 HIMA

廈門岳航計(jì)算機(jī)工程有限公司

聯(lián)系人：李素云

企業(yè)QQ：2851195446，2851195466

手機(jī)：18965423501

座機(jī)：0592-5165501

采用多主機(jī)分布式監(jiān)測(cè)方式，它具有以下特點(diǎn)：

適應(yīng)能力強(qiáng)，可以通過(guò)選用適當(dāng)數(shù)量的上位機(jī)和數(shù)據(jù)采集站來(lái)構(gòu)成相應(yīng)規(guī)模的系統(tǒng)，便于擴(kuò)展。

可靠性高，某個(gè)主機(jī)或采集站出現(xiàn)故障，不會(huì)對(duì)系統(tǒng)的其他主機(jī)或采集站造成影響。當(dāng)一個(gè)采集站出現(xiàn)故障時(shí)，只影響本采集站的功能。當(dāng)一個(gè)主機(jī)出現(xiàn)故障時(shí)，可由其他主機(jī)“代管”。

實(shí)時(shí)響應(yīng)性好，各個(gè)數(shù)據(jù)采集站之間是真正“并行”工作，因此，系統(tǒng)的實(shí)時(shí)響應(yīng)性好。

與單主機(jī)監(jiān)測(cè)系統(tǒng)相比，不易造成“瓶頸”現(xiàn)象。

整個(gè)系統(tǒng)上位機(jī)選用工控機(jī)，下位機(jī)選用智能測(cè)控前端，每臺(tái)上位機(jī)配有1臺(tái)UPS，主控室和集控室分別配1臺(tái)打印機(jī)。系統(tǒng)總體結(jié)構(gòu)如圖1所示。

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