基于PLC的音乐喷泉控制设计

AbstractIn recent years,music fountain is the emergence of a garden building combinedwith a fancy watch a product,its collection of sound,light,color,shape,and generateskaleidoscope waterscape.Along with the rapid development of the programmablecontroller,music fountain is becoming more and higher to the requirement of controlsystem;make more and more need to use PLC to realize control part.This topic combined with the requirements of the specification,with musicfountain as the research object;adopt Mitsubishi PLC as the controller of the fountainmodel.Design of the control method has two kinds:one is fixed program operationmode.According to design a good steps in advance step by step,execution cycles.Another way of control is through the music fountain control.By PLC interruptprogram audio signal collection and play music,audio signal of PLC to standardizealgorithm,the algorithm of data into analog and output by analog output to control theoutput frequency of frequency converter,so as to control water pump speed,to controlthe fountain water column height to follow music strength changes.The design of music fountain control system's overall function is analyzed,andthe programmable control technology,the application of variable frequency controltechnology,the development trends are briefly introduced,as well as the musicfountain control overall design,the overall design of the electric system and PLCprogram design and parameter setting of inverter.This design improves the musicfountain system control quality;improve the stability of music fountain controlsystem.Key words:Musical fountain,Control system,PLC,frequency