国贸经济管理类毕业论文-基坑排水监控系统的设计及应用

*L0JAA ?I?B.NJ)9d3+5X,:+.D0F2+X*;+X,kd-3+565B.NAG+X?LS7-300 3+G PLC jfs?,GEE* Q QG QFJA QAA9a8aF0;8F0;/f?8+a7X8(1;&#Gddid,F8T_d#%,&L$63|&L$0A,d#%5F0;f,MFJ_14UP7K-,7-X*,);M0id#%od,Lud#%F|F2&in/jaZ3+5,f7-6n/jd#%8_!_1Y+X4UP7K-F|)jB3B7-d#%G+XE*fEd#%wQd#%,+X/AAE,7-5jdQ$YE#q1yB3+5*M-#65LfKA/?d#%5F0;FkEf5*L0JAA ?IIAbstractThis issue exists for the shortcomings of the existing drainage system to study thefoundation for the use of the main drainage control systems. The main drainagecontrol system is the core technology of the pump control device. The project set upby the Siemens S7-300 series PLC as the central control unit, and extend thenecessary digital input and output modules, analog modules and communicationmodules. This design has a place automatically, local manual, automatic and remotemanual four kinds of remote control, you can freely switch. In the automatic modecan be real-time measurement of water storage level, according to water level changes,automatically determine the start time and sets the number of pumps. Taking intoaccount the principle of uniform wear and to prevent long-term need due to damprusty water pump died, the design of the working mechanism of the pump rotation, soevery time you start the pump, always turn on the pump running time at least.Meanwhile, the system uses embedded and multi-interface technology, designs andimplements a reliable display and the programmable controller communication, touchscreen support for the operation of the wireless mouse and keyboard functions. Harshenvironment in the pit, the operator simply positions according to the water pumphouse and pump operating parameters of the actual situation, timely modify thedisplay parameters, you can complete the whole system control functions to facilitatethe commissioning and maintenance of equipment, reduced underground work time.This study is the main drainage system has the following features: real-timeonline monitoring of water level and display; pump automatically starts and stops;supported the use of the wireless mouse and keyboard, on-site debugging; pump usinga shift system, to pump a balanced work to improve the life of the pump ; design amore comprehensive protection features such as water protection, high temperatureprotection and over current protection, etc.; The system can be networked with thefoundation ground monitoring center, to facilitate centralized control.Keywords: centrifugal pump, a programmable logic controller, touch screen, barrier*L0JAA -III-$F .11.1*d3+5F .11.1.1*d,G?W .11.1.2kd3+5,4 .11.2)9*d3+5)(X,LN .31.2.1*d3+5)( .31.2.2*d3+5X,LN .41.3-F.D01 .41.4B.N .5*d3+5kxAA .62.15F0;f,_F .62.1.15F0;f,+O .62.1.25F0;f,(& .72.1.35F0;f,7- .82.2*d3+5,k5 .92.2.1kd3+5,8#q0; .92.2.2Ed5 .102.2.3#%1dKTLb .102.3kd3+5fx .112.3.1f*6 .112.3.23+55 .122.3.33+57- .133 kd3+5.&AA .163.1PO3+5AA .163.1.1dPO .173.1.2$Y|PO .183.1.3PO .193.2+eL0LAA .193.3 PLCf3+5AA .213.3.1 PLCF9.&41 .213.3.2 CPU313C,*64 .243.3.3 SM321,*64 .243.3.4 SM331,*64 .263.3.5 PLC3+5+e .284 kd3+5E&AA .294.13+5 PLC0;AA .294.1.1d QF aBg ” .294.1.2d#%,E,) .314.1.3=PLC,FJ) .384.3.1 MPIFJ*6 .384.3.2 MPIFJA5 .394.3.3*0& .395 k5K .4163) .438$BR .45*L0JAA 1F 1F&1.10j315F&1.1.10j,H?);dEQ,jXF|$!*,0FE0; ,+adr7 ,Xd,+X; ,;dfJ=$G#q* ,0FE0;Z7-4*6*Ld,LN ,6FP*#d ,)j& ,*E;L ,Xd+X;7-EC#q.21#Ea0c1y)B ,! ,j.* ,NG9x,d1.1.2qj315,4Fkd3+56jj+eDTG6jG6k?5/#%L(L0!L0L04#q#%-O0#%1F+eDG6k?5Lb(6+ejQ0._+eFE_3+55. 1-1p/j7/#%XA-d3+5h?*dd#%od#%j4G+XLb(6+ejJ46/?d#%_6+ejQFOE,j7-EFj#,7-7-/#%X_x+Xd&|%#%#hd1FfP+ej&EdQFOEF!&d/+X+Y*&E4=G#%#,#qF6+Y*6+Y*&E6XMFd#%d1,d1D:!L0,;+Xj i. 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