Our company observation elevator control count up year , all the same stay around old site control and not a soul develop the forerunners product 決對(duì)是好產(chǎn)品才敢推出本公司觀察數(shù)年那時(shí)之電梯控制
The control of marine boiler system on board ship , especially on board turbo ship or on board oil tanker , is always a important question for discussion of maine engineering technology and automatization technology . the reason is that the control count for much with efficiency , security and reliability of boiler 對(duì)船用鍋爐系統(tǒng)的控制,特別是對(duì)透平機(jī)船或油輪所使用的大型鍋爐系統(tǒng)的控制,一直是船舶輪機(jī)技術(shù)和自動(dòng)化技術(shù)的一個(gè)重要課題,因?yàn)檫@一控制不僅直接涉及到鍋爐運(yùn)行的效率效能,而且更關(guān)系到它運(yùn)行的安全性和可靠性。
In signal processing circuit , the key of our study , based on methods of mcu + cpld and a / d converter , a time interval measurement unit is done , in which an isp cpld counter is carried out to judge laser pulse for controlling counting and offering signal of time series and control , and a count quantization error measurement circuit which main ramp circuit and 12 bits a / d conversion circuit guarantees the resolution of system 信號(hào)處理部分是本文研究的關(guān)鍵,采用mcu + cpld的設(shè)計(jì)方法和模數(shù)轉(zhuǎn)換技術(shù)構(gòu)成時(shí)間間隔測(cè)量單元的理論基礎(chǔ),其中用可在系統(tǒng)編程的cpld計(jì)數(shù)器實(shí)現(xiàn)了對(duì)循環(huán)光脈沖的判斷以開關(guān)計(jì)數(shù),并提供計(jì)數(shù)量化誤差測(cè)量電路相應(yīng)的時(shí)序和控制信號(hào),用斜坡電路和12位a / d轉(zhuǎn)換電路完成對(duì)計(jì)數(shù)量化誤差的測(cè)量,保證了系統(tǒng)的分辨率。