描述

為了解決高速的數(shù)據(jù)采集和低速的Flash訪問速度之間的矛盾，采取將數(shù)據(jù)流串并轉(zhuǎn)換，復(fù)制多個(gè)操作模塊并行處理的設(shè)計(jì)方法。通過利用FPGA內(nèi)部的存儲(chǔ)區(qū)實(shí)現(xiàn)4個(gè)雙口RAM作為緩沖區(qū)。每條外部Flash總線用一個(gè)雙口RAM，采集到的數(shù)據(jù)分時(shí)加載到4個(gè)RAM中，然后再寫入Flash。寫入Flash的操作以流水方式進(jìn)行，具體方式如圖3所示。首先，外部A／D采樣通道寫數(shù)據(jù)到RAM1。當(dāng)RAM1寫滿時(shí)，加載數(shù)據(jù)到第一組Flash數(shù)據(jù)寄存器，加載完成后第一組Flash進(jìn)入自動(dòng)編程階段；當(dāng)RAM2寫滿時(shí)，第2組Flash加載開始，數(shù)據(jù)加載完成后，進(jìn)入自動(dòng)編程階段。依次加載RAM3，當(dāng)RAM4寫滿，第4組Flash開始加載后，F(xiàn)PGA內(nèi)部控制重新寫RAM1，開始對(duì)第5組Flash操作，然后依此循環(huán)方式對(duì)第6～16組Flash進(jìn)行操作；當(dāng)?shù)?6組數(shù)據(jù)加載完成后，第1組Flash已經(jīng)編程結(jié)束，接著從第1組Flash開始加載和編程?？煽闯鱿?6組Flash寫入數(shù)據(jù)是并行的，通過并行寫操作，可存儲(chǔ)高速采集的數(shù)據(jù)。

歐美品牌停產(chǎn)的，常用的“PLC”備品備件

我司產(chǎn)品應(yīng)用于以下領(lǐng)域：

1,《發(fā)電廠DCS監(jiān)控系統(tǒng)》

2,《智能平鋼化爐系統(tǒng)制造》

3,《PLC可編程輸送控制系統(tǒng)》

4,《DCS集散控制系統(tǒng)》
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5,《智能型消防供水控制系統(tǒng)》

6,《化工廠藥液恒流量計(jì)算機(jī)控制系統(tǒng)》

7,《電氣控制系統(tǒng)》造紙,印染生產(chǎn)線,變電站綜合自動(dòng)化控制系列

本特利，英維思，伍德沃德，?？怂共_、西屋、瑞恩、施耐德莫迪康、ABB、AB、西門子、摩托羅拉、GE發(fā)那科、安川、博世力士樂，ACSO，力士樂等各大品牌的DCS系統(tǒng)配件，機(jī)器人系統(tǒng)配件，大型伺服系統(tǒng)備件。

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