通用型水位控制器

通用型水位控制器(一)

文档编号:ZD1288 文档字数:21671,页数:36 附外文翻译

通用型水位控制器
摘要:本设计方案中，水位控制器由控制主机、水位传感器、执行器件三部分组成。主机采用中规模数字电子、光电隔离器件组成的逻辑系统，其功能有：水位控制，即根据探针（水位传感器）所采集到的水位空信号，经过逻辑判断与分析自动控制水动水泵电机的启动与停止；水位显示，即当水位经过设定的每一个位置时，这个水位所在的指示灯便点亮，应注意当水泵电机停止供水，水位开始下降时，水位所在的指示灯便由高到低逐渐熄灭。如果出现指示灯不按顺序灭时，应进行故障检查。在正常情况下，干涸水位的指示灯是长期亮的，只有在断线或水位在干涸水位之下时，此灯才熄灭，而其余的指示灯是随水位的变化而变化；最高水位报警，即当水位到达设置的最高水位时，报警器开始报警；干涸水位与断线报警，如果由于某些原因使水位下降到干涸水位之下或水位传感器连接线被刮断时，控制器自动报警，并关闭水泵电机，中断供水，以免使事故更严重，若属断线故障，接好线后即可自行恢复正常工作；若水位已下降到干涸水位以下时，排除故障后应手动强迫给水，待水位上升到干涸水位以上时，方能进入自动控制状态，进行正常的供水。通过水位传感器给定的信号，完成上述功能，是水位始终保持在规定的范围之内。本文探讨的锅炉水位控制系统是利用EDA技术良好的逻辑综合与优化功能及其设计周期短、设计效率高、设计风险小的特点，将水位控制的核心电路用EDA技术模块化。文章阐述的是锅炉水位控制系统工作原理及利用EDA技术将其核心电路模块化的过程。

关键字：水位传感器、光电耦合器、继电器、电源、EDA技术

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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