Control System Design of Intelligent Water Meter

2012 ◽  
Vol 490-495 ◽  
pp. 1296-1300
Author(s):  
Jun Ying Li
Keyword(s):  
Control System ◽  
Water Flow ◽  
Power Supply ◽  
Single Chip ◽  
Electromagnetic Valve ◽  
Design Program ◽  
Household Water ◽  
Rotor Wing ◽  
New Type ◽  
Water Meter

The control system of a new type of intelligent household water meter which can prevent water leakage is designed in this paper. That water drives the rotor-wing rotating can make micro direct-current generator generate and store power used for the system power supply. OMRON EE-SX671 type photoelectric sensor to detect water flow is used in the system. And a new water electromagnetic valve is designed, the type of which is normally open and direct-operated. If closed, it will be self-locking state and not need power supply. But it needs be reset manually. The design program based on AT89C52 single-chip microcomputer not only displays water flow using LED but also controls the automatic shut-off function of electromagnetic valve.

Manufacture of a Scanning Magnet Power Supply Used in Industrial Radiation Accelerator

2012 ◽  
Vol 516-517 ◽  
pp. 1382-1385
Author(s):  
Cheng Da Yu ◽  
Gang Li ◽  
Zhi Qiang Li ◽  
Yong Feng Wang
Keyword(s):  
Magnetic Field ◽  
Control System ◽  
Power Supply ◽  
Step Length ◽  
Single Chip ◽  
Peak Current ◽  
Industrial Radiation ◽  
Scanning Magnet

The design of a scanning magnet power-supply used in a 10MeV industrial radiation accelerator is presented in this paper. The consideration of linear magnetic field current and the principle of triangle wave modulator are included. In addition, the control system based on single chip and its anti-jamming scheme in industrial circumstance are also introduced. The scanning magnet power-supply can produce continuous triangle waveform current. The frequency can be adjusted by step length of 1Hz ranged from 20Hz to 50Hz, and the peak-to-peak current is 20A.

Design of Emergency Power Supply Control System for Seismic Station

2012 ◽  
Vol 229-231 ◽  
pp. 2343-2347
Author(s):  
Qin Gao ◽  
Zhen Jing Yao ◽  
Hong Wei Peng
Keyword(s):  
Control System ◽  
Power Supply ◽  
Single Phase ◽  
Control Strategies ◽  
Seismic Station ◽  
Input Voltage ◽  
High Property ◽  
Single Chip ◽  
Charging System ◽  
Emergency Power

According to the special requirements of power supply for seismic station, a new single-phase emergency power supply control system is proposed in this paper. The principle and structure diagram of the system is illustrated. The control strategies of the system and hardware design of key circuits are discussed in detail. The emergency power supply control system adopts high-property C8051F310 single chip micro-computer. According to the monitoring value of input voltage, the system switches between charging and inverting. Main circuit of inverting uses single-phase full-bridge topology. To correct a power factor, charging system applies boost circuit to make input current follow to a given current reference. Experiments validate the feasibility of the proposed design.

scholarly journals Design of the control system of the laser cleaning robot facing the inner wall of the tiny pipe

2021 ◽  
pp. 55-60
Author(s):  
Ч. Циао
Keyword(s):  
Control System ◽  
Circuit Design ◽  
Power Supply ◽  
Laser Cleaning ◽  
Design Flow ◽  
Single Chip ◽  
Single Chip Microcomputer ◽  
Cleaning Robot ◽  
Chip Technology ◽  
And Control

In order to solve the problem of cleaning small and micro pipelines, the control system of the cleaning robot for small and micro pipelines is designed using single-chip technology. Draw the circuit design flow chart, use PROTEUS software to design the display and control circuit of the DC adjustable regulated power supply, stepping motor. Write and debug the program that controls the start and stop of the motor, accelerate and decelerate, and rotate forward and reverse in keil4; import the program into the single-chip microcomputer, and use the PROTEUS software for simulation and simulation. The experimental results show that the designed control system can realize the two actions of the pipeline robot going straight in the pipeline and the cleaning head rotating.

An Automatic Plant Irrigation System Based on Fuzzy Control

2013 ◽  
Vol 303-306 ◽  
pp. 1162-1166
Author(s):  
Zhen Yang Ge ◽  
Rui Qing Zhang ◽  
Ying Jie Yu ◽  
Wang Wang Wu
Keyword(s):  
Control System ◽  
Fuzzy Control ◽  
Irrigation System ◽  
Single Chip ◽  
Closing Time ◽  
Single Chip Microcomputer ◽  
Moisture Sensor ◽  
Electromagnetic Valve ◽  
Soil Moisture Sensor ◽  
Opening And Closing

An automatic watering controller with AT89S52 single-chip microcomputer was developed. According to the moisture condition detected by soil moisture sensor, the system could control the watering quantity by using fuzzy control rules to limit opening and closing time of electromagnetic valve of the irrigation system. Mamdani inference algorithm was employed as fuzzy control model for this closed-loop control system. Soil moisture sensor was put into the substrate for roots growth to obtain moisture information and used as the input. By comparing the water needed for plant growth, water demand and the electromagnetic valve opening and closing time was determined by the single-chip microcomputer program. Centroid method of defuzzification was used to determine the quantitative level of watering quantity. This fuzzy controller was designed by MATLAB fuzzy logic toolbox. The control system was simulated by Simulink. Simulation results show that this control method has good stability.

Design of Intelligent Hanger Based on AT89C52 Single-Chip Microcomputer

2013 ◽  
Vol 694-697 ◽  
pp. 1475-1478
Author(s):  
Xing Jian Jia
Keyword(s):  
Control System ◽  
Rotational Motion ◽  
Temperature Sensor ◽  
Single Chip ◽  
Single Chip Microcomputer ◽  
Automatic Adjustment ◽  
Mechanical Part ◽  
New Type

A new type of intelligent hanger was designed. Wings structure of hanger mechanical part was adopted,screw rod and motor combination of the lifting mechanism can make the wings outspread and fold, unique cover curtain structure was adopted. Cover curtain roll up and down through the motor driving.The control system adopts AT89C51 single-chip microcomputer. According to the information that coming from the rain sensor and the temperature sensor, two stepper motor’s positive and negative rotational motion was controlled.So as to realize automatic adjustment when it rains. The hanger will be automatically closed when the temperature is higher than expectation, and the hanger will be automatically opened when the temperature is less than expectation.The hanger has been produced and has a good performance.

scholarly journals Design of Intelligent Hanger Based on Single Chip and Pro-E

2013 ◽  
Vol 7 (1) ◽  
pp. 131-137
Author(s):  
Xingjian Jia ◽  
Changbao Chu
Keyword(s):  
Control System ◽  
Rotational Motion ◽  
Temperature Sensor ◽  
Single Chip ◽  
Automatic Adjustment ◽  
Mechanical Part ◽  
New Type

A new type of intelligent hanger was designed based on single chip and Pro-E software. 3D entity model of actuator and cover curtain mechanism are established by Pro-E. Wings structure of hanger mechanical part was adopted screw rod and motor combination of the lifting mechanism can make the wings outspread and fold, unique cover curtain structure was adopted. Cover curtain rolls up and down through the motor driving. The control system adopts AT89C52 single chip. According to the information that coming from the rain sensor and the temperature sensor, two stepper motor’s positive and negative rotational motion was controlled. So as to realize automatic adjustment when it rains. The hanger will be automatically closed when the temperature is higher than expected, and the hanger will be automatically opened when the temperature is less than expected. The hanger that has been produced has a good performance.

Control System of Power Supply in Under-Ground Coal Mining

2006 ◽  
Vol 2 (3) ◽  
pp. 12-19
Author(s):  
G. G. Pivnyak ◽  
Keyword(s):  
Control System ◽  
Coal Mining ◽  
Power Supply

Radon removal by aeration: observations on testing, installation and maintenance of domestic treatment units

2009 ◽  
Vol 9 (4) ◽  
pp. 469-475
Author(s):  
T. Turtiainen
Keyword(s):  
Water Quality ◽  
Water Flow ◽  
Removal Efficiency ◽  
Flow Rate ◽  
Test Protocol ◽  
Household Water ◽  
Medium Flow ◽  
Removal Efficiencies ◽  
Frequent Sampling

Radon is one of the contaminants that sometimes impair the water quality of wells, especially those drilled in bedrock. Domestic radon removal units based on aeration have been commercially available for more than ten years. In order to determine how effectively these units remove radon a new test protocol applying frequent sampling while letting 100 litres of water flow, was developed. This way, removal efficiencies can be more accurately calculated and possible malfunctions detected. Seven models of domestic aerators designed for removing radon from household water were tested. The aerators were based on diffused bubble aeration, spray aeration or jet aeration. The average removal efficiencies for 100 litres with a medium flow rate were 86–100% except for a unit that circulated the aerated water back to the well that had removal efficiency of 80% at the maximum. By conducting a questionnaire study usual problems related to the aeration units were localized and recommendations on maintenance and installation are given accordingly.

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