The urban water supply that is based on Siemens PLC attempers systematic design

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1 foreword this project is the automation control system that for some city water supply designs, the target is the pressure of mouth giving water that reachs water supply with water level of water works reservoir move water to control object implementation finally to optimize. This city water supply attempers the system basically includes two much: Fountainhead ground draw or channel water collects system and water works constant voltage to lose water system tube-shaped part. Fountainhead ground draw or channel water collects a system to basically be comprised by Jing Qun of water supply showing the ground. Jing Qun of every groups of water supply sets a now Jing Qun to center control room, every well sets house of well of one control showing the ground. Now Jing Qun centers control room to set this group water pump to open stop concentration to control a system, to fountainhead ground the pilot a ship into a harbour of each well pump reachs frequency conversion pump external water supply undertakes unity cooperative control. Water works constant voltage loses water system tube-shaped part main by always accuse room center to control system, discretion to press distribution system, reservoir, 2 pump room to wait for composition, 2 pump room are responsible and direct to urban water supply, always accuse room center to control a system to regard long-range monitoring as the site, the long-range concentration that realizes Jing Qun manages and coordinate, make sure best reservoir water level is mixed best pressure of mouth giving water. Always accusing room center to control a system is whole attemper systematic core. This project uses SiemensS7200 and S7300PLC design supervisory system, use SimaticWinCC to regard as go up a machine supervisory system software, controller of bus line of communication of systematic market network, spot, PLC, labour accuses the advanced equipment such as communication of machine, microwave and automata, a lot of advanced technique such as long-range monitoring at an organic whole, reflected contemporary IT and automation technology adequately to apply mediumly in urban water supply. 2 control system makes water supply overall by sheet of station showing the ground the well is unit, show system of ground station Jing Qun, for the center control stands on, the center always controls a system 4 parts will design. 2.

System of control of single well of 1 station showing the ground shows ground station single well to control systematic PLC to use S7-222, PLC of system of group control of well of station showing the ground uses S7-314. Both be linked together with Profibus spot bus line, information is exchanged inside booked information cycle. System of control of single well of station showing the ground receives Jing Qun to center the control signal of station S7-314 now, the data that completes system of whole sheet well is collected, implementation is moved to the hand of electric machinery, this locality concentration and long-range control, through CP340 communication processor and FC-201 of broadcasting station of wireless data transmission and go up a central control system be linked together, finish whole Jing Qun to the data that now collect stands is collected and convey. Program of software of PLC of Jing Qun of station showing the ground basically is with below (each single wells) communication processing program, with go up communication handles program, Jing Qun pump is opened stop this locality to control program, Jing Qun centrally pump is opened stop this locality far. 2.

System of 2 pump room is in charge of system of control of 2 2 pump room direct to urban water supply, the PLC inside 2 pump room uses Xi Menzi S7-314 to be able to make up Cheng controller, through Profibus spot bus line and go up a machine be linked together, it is the core that ark controls inside pump room, receive go up the control signal of a machine controls frequency control, implementation is started to electric machinery, stop, the logistic control of the signal such as restoration; The collection that waits for signal to pressure, discharge, water level, electric current, rotate speed and numerical value are changed and answer pass go up a machine, receive go up the valve of a machine opens degree of control signal to realize water supply to optimize; Wait for equipment to electric machinery flow too, press protection to wait a moment too. 2.

3 go up a concentration that central control station regards the spot as all single wells control center, loading spot place to have single well liquid, the concentration of the information such as moving condition of pressure, voltage, electric current and each well pump memory, management, in the meantime, control a center as concentration, those who loading spot place to have single well pump is long-range open stop concentration to control. Additional, go up control station PLC still loads a center move and the trade of real time data that always dominate room monitoring center. Go up a PLC of central control station on one hand according to water works reservoir fluid undertake long-range and automatic open pump stopping a well, according to always controlling room monitoring center control commands those who undertake spot pump to open stop. Use the means of circular annulus make one's rounds on the other hand, real time collects single well each field data. PLC of central control station and issue a Jing Qun PLC to have news report through means of broadcasting station of wireless data transmission. The program basically finishs pressure to detect, those who supply water pump is soft open stop reach frequency to detect the function such as control. 2.

4 always accuse room center to always control a system of pump of single well of all fountainhead ground open the frequency conversion constant voltage that stops water supply and water works to be defeated by water pump to be defeated by water all by always accuse room center to control a system to control, those who implement whole system is reasonable attemper, management and monitoring. Always accuse room center to control unit to choose take PROFIBUS-DP net to get stuck (CP5611) the labour of interface accuses machine WINCC to be always advocate station, through Profibus spot bus line and the S7-314 He Jingqun of 2 pump room central S7-314 is linked together, the S7-314 that passes 2 pump house is in the information such as condition of transducer of collect of adduction of each information cycle, valve condition, pressure, discharge, water level and control valve, stop with cooperating those who control each water pump to open reach rotate speed, achieve optimized goal. Form multistage system of long-range distributed control. Always accuse room center to control a system to basically realize a function to be: Real time data is collected, function of data analysis and processing, control adjustment, picture shows, long-range communication, man-machine interaction, safe test and verify. Surveillant picture bag contains fountainhead ground flow of the moving circumstance of all pumping station, water supply, one screen shows a picture, and the each data information that the system gathers can show in real time on corresponding dynamic picture. Every picture has picture switch to control pushbutton, OK and convenient implementation picture switch and all sorts of operations. The water pressure with whole unit to controlling a system individually system, valve leaves degree, the loop of many main control such as pump frequency uses PID to control, going up the intelligence such as a control of machine use faintness attempers algorithmic, the stability that assures urban water supply and efficient. The PROFIBUS-DP bus line that the standard all adopts between station of each principal and subordinate has news report, formed multistage system of long-range distributed control, assured the quality of communication. 3 last words news of integrated intelligence control, computer, network mixes the article technology of spot bus line, according to the current situation of water supply network, control the labor of strategy and technology of spot bus line through be opposite, design and built monitoring of intelligence of long-range area network to attemper system. CNC Milling CNC Machining