環(huán)保HJ212協(xié)議是環(huán)境監(jiān)測(cè)領(lǐng)域中廣泛應(yīng)用的一種監(jiān)測(cè)數(shù)據(jù)傳輸協(xié)議。該協(xié)議定義了監(jiān)測(cè)設(shè)備與數(shù)據(jù)采集服務(wù)器之間的通信規(guī)范,實(shí)現(xiàn)了各種數(shù)據(jù)采集終端和平臺(tái)之間的互聯(lián)互通。
系統(tǒng)架構(gòu)
某地水庫(kù)有多個(gè)監(jiān)測(cè)站點(diǎn),每個(gè)站點(diǎn)有流量計(jì)、水位計(jì)、水質(zhì)數(shù)采儀等儀器儀表,這些儀器儀表具有數(shù)字輸出接口,可以接入到物通博聯(lián)工業(yè)智能網(wǎng)關(guān),網(wǎng)關(guān)采集這些數(shù)據(jù)并以環(huán)保HJ212協(xié)議傳輸?shù)奖O(jiān)控云平臺(tái)或上位機(jī),以實(shí)現(xiàn)數(shù)據(jù)實(shí)時(shí)監(jiān)測(cè)、超限預(yù)警、設(shè)備管理等功能。
工業(yè)智能網(wǎng)關(guān)與環(huán)境監(jiān)測(cè)平臺(tái)通信過(guò)程
1、工業(yè)智能網(wǎng)關(guān)與環(huán)境監(jiān)測(cè)儀器進(jìn)行連接和數(shù)采工作,包括RS485/RS232和網(wǎng)口。
2、工業(yè)智能網(wǎng)關(guān)向環(huán)境監(jiān)測(cè)平臺(tái)發(fā)送握手報(bào)文,請(qǐng)求建立連接。
3、環(huán)境監(jiān)測(cè)平臺(tái)回復(fù)握手應(yīng)答報(bào)文。
4、工業(yè)智能網(wǎng)關(guān)向環(huán)境監(jiān)測(cè)平臺(tái)發(fā)送登錄報(bào)文,包含采樣時(shí)間、設(shè)備編號(hào)、密鑰等信息。
5、環(huán)境監(jiān)測(cè)平臺(tái)進(jìn)行身份驗(yàn)證,如果驗(yàn)證成功,則回復(fù)登錄應(yīng)答報(bào)文。
6、工業(yè)智能網(wǎng)關(guān)向環(huán)境監(jiān)測(cè)平臺(tái)發(fā)送實(shí)時(shí)數(shù)據(jù)報(bào)文請(qǐng)求。
7、環(huán)境監(jiān)測(cè)平臺(tái)返回實(shí)時(shí)數(shù)據(jù)報(bào)文。
8、環(huán)境監(jiān)測(cè)平臺(tái)經(jīng)由工業(yè)智能網(wǎng)關(guān)發(fā)送控制指令報(bào)文給環(huán)境監(jiān)測(cè)儀器,比如要求環(huán)境監(jiān)測(cè)儀器啟動(dòng)/停止某個(gè)監(jiān)測(cè)任務(wù),修改采集參數(shù)等。
9、工業(yè)智能網(wǎng)關(guān)執(zhí)行控制指令,并回復(fù)控制指令應(yīng)答報(bào)文。
10、工業(yè)智能網(wǎng)關(guān)向環(huán)境監(jiān)測(cè)平臺(tái)發(fā)送退出報(bào)文,告知環(huán)境監(jiān)測(cè)儀器本次通信流程結(jié)束。
11、環(huán)境監(jiān)測(cè)平臺(tái)返回退出應(yīng)答報(bào)文。
12、工業(yè)智能網(wǎng)關(guān)與環(huán)境監(jiān)測(cè)平臺(tái)關(guān)閉連接。
審核編輯 黃宇
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