5、體系運(yùn)營(yíng)本錢低：
      選用GPRS公網(wǎng)通訊，全國(guó)規(guī)模內(nèi)均按一致費(fèi)率計(jì)費(fèi)，省去貴重的周游費(fèi)用, GPRS網(wǎng)絡(luò)可按數(shù)據(jù)實(shí)踐通訊流量計(jì)費(fèi)，(1分-3分/1K字節(jié))，也能夠按包月不限流量收費(fèi)，然后完結(jié)了體系的低本錢通訊。
6、體系的傳輸容量，擴(kuò)容功用好：
        監(jiān)控基地要和每一個(gè)PLC操控現(xiàn)場(chǎng)完結(jié)實(shí)時(shí)銜接。體系請(qǐng)求能滿意突發(fā)性數(shù)據(jù)傳輸?shù)男枰�，而GPRS技能能極好地滿意傳輸突發(fā)性數(shù)據(jù)的需要；因?yàn)轶w系選用成熟的TCP/IP通訊架構(gòu)，具有杰出的拓展功用，一個(gè)監(jiān)測(cè)基地可輕松支撐上千個(gè)現(xiàn)場(chǎng)PLC數(shù)據(jù)通訊。

7、GPRS傳輸功耗小，合適戶外供電環(huán)境：
       盡管與遠(yuǎn)在千里的數(shù)據(jù)基地進(jìn)行雙向通訊，GPRS數(shù)傳設(shè)備在作業(yè)時(shí)卻只需與鄰近的移動(dòng)基站通訊即可,其全體功耗與一臺(tái)一般GSM手機(jī)適當(dāng), 平均功耗僅為200毫瓦左右，比傳統(tǒng)數(shù)傳電臺(tái)小得多。因此GPRS傳輸方法十分合適在戶外運(yùn)用太陽(yáng)能供電或蓄電池供電的場(chǎng)合下運(yùn)用。


體系構(gòu)成


1、現(xiàn)場(chǎng)操控/搜集點(diǎn)：
      現(xiàn)場(chǎng)監(jiān)控點(diǎn)由PLC完結(jié)主動(dòng)操控，并搜集有關(guān)信息，經(jīng)過(guò)RS232或RS485接口與GPRS DTU終端相連，PLC搜集到的設(shè)備信息經(jīng)過(guò)GPRS DTU終端對(duì)數(shù)據(jù)進(jìn)行處理、協(xié)議封裝后發(fā)送到GPRS無(wú)線網(wǎng)絡(luò)。

2、監(jiān)控基地：
a）公網(wǎng)接入計(jì)劃
       服務(wù)器選用公網(wǎng)方法接入Internet，如ADSL撥號(hào)/電信專線寬帶上網(wǎng)等，請(qǐng)求公網(wǎng)固定IP地址；能夠完結(jié)中小容量的體系運(yùn)用。

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Davidson Adjustable Reference Mirror D615 #141

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American Optical Stereo Star Zoom on Boom Stand

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7 Miscellaneous Microscopes

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PI Ultra High Prescision Side Drive Stage w/Motor Drive

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Schwartz Electro Optics Erbium Laser Head

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