Pdf water level control system using plc and wireless sensors. Water level controller in chennai, tamil nadu water level. The water level sensor is made with a metal plate mounted on the reservoir or water tank. It could automatically switch on and off of the domestic water pump set based on the water level of the tank. Unlike other systems, which use floats or other moving parts, or introduce an electrical current into the water, the elc800 utilizes a. In this work a simple water level indicator and a water level controller based on fuzzy logic is proposed.
Automatic fluid level control using programmable logic controller. As a result, internal srflipflop of ic1 resets and its output goes high. Design a simple water controller in which electrodes are required to sense high and low water levels in a tank. When the water level of tank goes below the low level marked by l the voltage at pin 2 of ic1 becomes low. When there is enough water in the underground tank, probes c and s are connected through water. The fabricated electronic level indicator defines 2 levels minimum and maximum through leds. These are state of the art advanced, digital technology microcontroller based products. For a nonlinear water tank level it is necessary to design a gain scheduling controller for a water level control system. The steptest experimental results for both old and new tanks and the method of calculating the. When water level of tank 1 is below high level, solenoid valve 1 and pump is operated. Water level control systems based on fuzzy logic, water level is controlled using scada 12 supervisory control and data acquisition system.
Versatile water level controller full circuit diagram with. The circuit uses 6 transistors, 1 ne555 timer ic, a relay and few passive components. Design of an automatic water level controller using mercury. Basic principal of ultrasonic distance measurement is based on echo. Figure 1 simple automatic water level controller circuit. Jul 21, 2014 plc based multichannel automatic liquid level controller electrical engineering page9 0 result. Avr atmega8 microcontroller to sense the water level process the input and display on the lcd. Project report on water level controller pdf this report is submitted in partial fulfillment of the requirements for the award. Checkpoint is a liquid level controllersensor combination that comes preset and can operate up to 4 set points depending your specific configuration needs. Pdf water level control system using plc and wireless. Introduction automatic water pump controller is a series of functions to control the automatic water pump controller circuit in a reservoir or water storage. In this arduino based automatic water level indicator and controller project we are going to measure the water level by using ultrasonic sensors. Water level controller in coimbatore, tamil nadu water. May 11, 2012 here is a simple, versatile project which indicates the level of water and automatically controls it by using pic microcontroller.
A lot of water level controller projects have been published in this website but this is the first one based on a microcontroller. The sensor senses the intensity of water and give indication to. The system incorporates two mains contactor which are energized to provide a direct online start of the motor. The checkpoint water level controller works with any program logic control, dc power supply, or you can direct connect to an automation control. Water level control system international journal of engineering. The heart of the water level controller using 8051 microcontroller project is the at89c51 microcontroller.
A simple but very reliable and effective water level controller circuit diagram is shown here. Automatic water level controller 2 circuits choice. This water tank level controller system helps to prevent the overflowing of water from the tank and helps in maintaining the water level. This report focuses on the design and implementation of a plc based water level control system. The circuit is completely automatic which starts the pump motor when the water level in the over head tank goes. This system is used only to sense the level of water in a tank and display the reading on a 7 segment display.
Water pump controller senses the level of water in a tank and drives the water pump. This circuit monitor the condition of water tank and control the motor used to pump water from ground tank to roof tank using microcontroller. Abstract in this paper we introduce the notion of water level monitoring and management within the context of electrical conductivity of the water. Plc based multichannel automatic liquid level controller. So current through r5 and d1 to trigger base of q3, cause q3 conducts current to cause the transistor q4 also works. The automatic water level controller ensures no overflows or dry running of pump there by saves electricity and water. The circuit diagram of the water level controller using arduino is shown above. Many researchers have reported works on level control system like, in 1, a plc logic program is written using look up table approach for control of water level with a help of conductive type. The circuit described here is built around timer ic1 555.
The level of water is controlled by the controller. This work is based on a pid control of the level of the water in a tank. In industry, the water level control problem is a typical process control problem, and has been extensively studied in the literature. The report provides an interim account of water level control system of a tank. Power supply is obtained through stepdown transformer x1, diodes d1 through d4, capacitor c1, series currentlimiting resistor r1, regulator ic1, and noisefiltering capacitors c2 and c3. Device selection guide for water level control applications. Sep 18, 2018 the explained ic 555 based automatic water level control circuit is a straightforward approach, project.
Automatic fluid level control using programmable logic. The explained ic 555 based automatic water level control circuit is a straightforward approach, project. Fully automatic water level controller model noit180wlc. Aug 28, 2017 the heart of the water level controller using 8051 microcontroller project is the at89c51 microcontroller. More specifically, we investigate the microcontroller based water level sensing and controlling in a wired and wireless environment. Water level control system using plc and wireless sensors. Human effort is reduced as the system controls the motor automatically based on the water level.
We have used four sensor probes to sense the level of water. You are able to utilize this motor driver circuit at your home or college employing more affordable components. A lot of water level controller projects have been published in this website but this is. Water level control project ppt linkedin slideshare. Microcontroller based automatic water level control system. For a nonlinear watertank level it is necessary to design a gain scheduling controller for a water level control system. Receiver section is connected to the controlling section, which process the received information. Selecting level controllers based on the applicationk8akdtls1. Water level controller circuit water level controller circuit. These coupled tank liquid level systems are in second order system. Here is a simple, versatile project which indicates the level of water and automatically controls it by using pic microcontroller. Automatic water level controllers are highly recommended for metro cities or areas where drinking water is supplied through pipelines which are further distributed in homes, hotels, societies etc. Water level indicator controller using pic microcontroller.
Plc program for water level control plc level control. When water level of tank 2 is below low level, solenoid valve 2 and pump is operated and when it is reached at high level solenoid 2 gets off. This study aims to propose a multipoint integrated realtime control method based on discrete dynamic water level variations, which can be realized only based on the programmable logic controller plc system without using a complex mathematical model. A discretized water level control model was developed to conduct the realtime control based on dataautomation. Most industries are facing water level controlling problem, the major problem encountered is to monitor the over flowing of water. Design a plc program to control the level of a water storage tank by turning a discharge pump on and off based on low and high levels. Used in big buildings where the manual monitoring is difficult. The low level and high level probes in the overhead tank are marked l and h, respectively. Water level control is highly important in industrial applications such as boilers in nuclear power plants. Aug 05, 2014 water level controller circuit advantages. A water level controller using 8051 is shown in this article.
The relay i used was a 5v220 ohm relay and thats why the current limits resistor r12 was added in the circuit. In the next paper the micro controller based wireless, gsm based water level indicator is explained. There are also custom made variations such as control of multiple pumps or multiple tanks. Performance evaluation of the realized system in order to carry out performance testing of the developed system, it was connected to a 0. Main components are transformer, pump, capacitor, voltage regulator, sensor etc. Automatic control of water tanks can work continuously and can provide accurate quantity of water. Waterlevel based discrete integrated dynamic control to. We take up major water level monitoring projects with advanced features like cloud communication based level monitoring system which will be linked to dedicated server for storing the information which can be viewed in local computers and saved as data for any given period of time for reporting purpose, suitable for very huge water storage and. Water level controller can be used in houses, industries, factories, power plants, chemical plants and other liquid storage systems to save power and money. As a result, transistor t1 gets forward biased and starts conducting. The microcontroller then makes a decision based on the status of the sensors.
The pid controller will be designed to control the liquid level at tank 1 and design techniques of the pid controller are then conducted based on developed model. But now we are controlling the liquid level automatically by using plc, sensor, motor and valves. It is a standalone unit that switches the pump on at low and off at full level in the tank. This paper presents the design of an automatic water level controller aimed at providing an appropriate control to pump water to an overhead thank when empty and automatically stop the pump when the tank is full. The setup for the water level sensing electrodes is shown in fig. The authors motivated by the technological affordances of mobile devices and the believe that water level management approach would help in reducing the home power consumption and as well as water overflow. Mar 21, 2017 these are state of the art advanced, digital technology microcontroller based products. Applications of water level controller circuit using 8051. There is a different concept to make water level controller. Drycontact digital circuitry easily integrates with existing building automation systems, with a separate relay for each set point. The setup for the waterlevel sensing electrodes is shown in fig. Automatic water level controller allows you to decide the water storage levels for operations of the pump in the overhead tank and the sump.
Microcontroller based automated water level sensing and. Use 12v dc for powering the water level controller circuit. Plc based multichannel automatic liquid level controller electrical engineering page9 0 result. There is a third electrode which is used to detect the water level from the pump.
Automatic water level control system using plc project. Water level controller can provide a solution to this problem. The water level controller is based on magnetic level sensing, with sensors enclosed in ss tube and operated by a moving float that travels along the sensor tube, based on level in tank. Single dual tank operation, suction delivery modes. Each relay has an on and off level, making it perfect for many liquid level control applications. Whenever the water level falls below the low level electrode, the water pump starts and it stops once the water level touches the high level electrode. For facilities where plc based controls are already being used in other machine control applications, the benefits of using one for the water tank as well may be a wiser choice than the. Jan 14, 2020 figure 1 simple automatic water level controller circuit.
Automatic water level controller working principle w pics. Then plc controls liquid level by controlling working hours of dc pump. Waterlevel controller full circuit diagram with explanation. This paper describes a water level control system, using siemens logo. Build a simple water level controller using microcontroller. Control and detection applications of water level controllers. Waterline controls water level control fill w low alarm. Water level controller d o l starter semi automatic water level controller. The user has the power to choose a certain level of water and the system has to be capable of adjusting itself in order to maintain that certain level. Pid controller design for controlling liquid level of coupled tank system. The sensor assembly consists of four aluminum wires arranged at 14, 12, 34 and full levels in the tank. Paper says that advances in communication technology. The model elc800 electronic level control is an automated control system designed to maintain precise water levels for swimming pool applications, particularly for commercial or municipal swimming pools, spas or water parks. Water is a gift from the gods and it shouldnt be wasted.
Water level control is equipment used to control the water level in a field. When liquid level is up to certain height, the switch is automatically closed or disconnected to control water level. The lowlevel and highlevel probes in the overhead tank are marked l and h, respectively. The water level at different levels is sensed according to which the gate is closed or open that is when the water is filled to level 3 the closed dam shutter is fully opened, for level 2 gate is partially closed while for level 1 the gate is fully closed. As the water level rises, different circuits in the controller send different signals. Automatic water level controller working principle 3 types. Specially designed corrosion and shock resistant sensors to ensure trouble free operation. Levcon level controller set point controller for monitoring water level and controlling two pumps description two versions the versatile levconsp set point liquid level controllers provide up to 6 user configurable relay outputs. Waterlevel controller circuit waterlevel controller circuit.
To that, a labview program was built, this program gives the. When sound waves are transmitted in environment then they return back to the origin as echo after striking on any obstacle. As the water level rises or falls, different circuits in the controller send different signals. This is to certify that the thesis entitled low cost water level control for domestic. Automatic water level controller can provide a solution to this problem.
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