通用型水位控制器

論文編號:ZD1288  論文字數:21671,頁數:36  附外文翻譯

通用型水位控制器
摘要:本設計方案中，水位控制器由控制主機、水位傳感器、執行器件三部分組成。主機采用中規模數字電子、光電隔離器件組成的邏輯系統，其功能有：水位控制，即根據探針（水位傳感器）所采集到的水位空信號，經過邏輯判斷與分析自動控制水動水泵電機的啟動與停止；水位顯示，即當水位經過設定的每一個位置時，這個水位所在的指示燈便點亮，應注意當水泵電機停止供水，水位開始下降時，水位所在的指示燈便由高到低逐漸熄滅。如果出現指示燈不按順序滅時，應進行故障檢查。在正常情況下，干涸水位的指示燈是長期亮的，只有在斷線或水位在干涸水位之下時，此燈才熄滅，而其余的指示燈是隨水位的變化而變化；最高水位報警，即當水位到達設置的最高水位時，報警器開始報警；干涸水位與斷線報警，如果由于某些原因使水位下降到干涸水位之下或水位傳感器連接線被刮斷時，控制器自動報警，并關閉水泵電機，中斷供水，以免使事故更嚴重，若屬斷線故障，接好線后即可自行恢復正常工作；若水位已下降到干涸水位以下時，排除故障后應手動強迫給水，待水位上升到干涸水位以上時，方能進入自動控制狀態，進行正常的供水。通過水位傳感器給定的信號，完成上述功能，是水位始終保持在規定的范圍之內。本文探討的鍋爐水位控制系統是利用EDA技術良好的邏輯綜合與優化功能及其設計周期短、設計效率高、設計風險小的特點，將水位控制的核心電路用EDA技術模塊化。文章闡述的是鍋爐水位控制系統工作原理及利用EDA技術將其核心電路模塊化的過程。

關鍵字：水位傳感器、光電耦合器、繼電器、電源、EDA技術

In general use type water level controller
Abstract ：In this design, the water level controller is make up of the host computer, water level sensor, and the conduct device .The host computer use the logic system which make up of  the scale digital electron .and photo electricity isolated device, its function has: Water level control, named according to the empty signal of water level gathered to the probe (water lever sensor) , judge and analyze ,then automatically controlled the electrical machinery of water pump and stops; Show water level, which means that whenever water level at the time of every seat that established, then the indicator lamp light in this water level will be turn on. And operator must stop the electrical machineries supplying water pump, When the water level begin dropping down, the water level in indicator lamp will be gradually put up from high to lower, If the indicator lamp does not put up in order then should carry on trouble shooting. In normal cases, dry up indicator lamp of water lever is turned on all the time, light goes out in condition of breaking the water leveling or under the drying up water level, the other indicator lamps are vary with different water level; The Peak water level alarm, which means reach the peak level set up in water level, the alarm begins to report; Dry up water level and breaking water lever Alarm: if some reason make water level lower than the dry up water level or water level sensor which connected to wire blow off, controller automatically alarm, shut off the electrical machinery of water pump, stop supplying water, stop the accident getting more serious, if belong to the trouble of wire breaking, it can resume to normal work after connecting the line; When the water level has already dropped to the drying water level, we need to force water supplying manually after fixing a breakdown, waiting for water level is higher than the drying water level ,can enter the automatic state of a control to rise to and carry on the normal water supply. Give the definitely signal through the water level sensor, and finish the above-mentioned functions, keep the water level within the fixed range. Boiler water level control system in this text probe into EDA technology, it has good logic synthesize and optimize the function, at the same time, his design cycle are short, with high efficiency design and low design risk, the technological module of EDA water level instead of the key circuit of control. This article mainly explain EDA technology and his key circuit module
Key word：Water level sensor, photoelectrical coupler, relay, power, and EDA technology

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