International Research Journal of Engineering and Technology (IRJET) Volume: 04 Issue: 04 | Apr -2017
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e-ISSN: 2395 -0056 p-ISSN: 2395-0072
WATER LEVEL INDICATOR USING MICRO CONTROLLER Mudit bajpai, Money saxena B.tech, IMSEC Ghaziabad Uttar Pradesh, INDIA B.tech, IMSEC Ghaziabad Uttar Pradesh , INDIA ---------------------------------------------------------------------***--------------------------------------------------------------------Abstract -This paper elaborates the deign of the water level indicator and controller using micro controller 8051. This can be used both for household and commercial purposes. We make use of 8051 micro controller. There is also a buzzer and a LCD in this project.LCD is used to show the water level in the tank or reservoir. We make use of port P0 for connecting levels of the tank while port P2 is used for connecting the LCD. Micro controller also controls the pump which is used to pump water to the tank. As the tank reaches the full mark the pump is switched off during auto mode while the pump is switched ON when tank reaches empty mark. We make use of 8051 micro controller as it is easily programmable and is quickly accessible as compare to other micro controller.
MODE 0 - 13-bit timer/counter mode. MODE 1 - 16-bit timer/counter mode. MODE 2 - 8-bit auto reload mode. MODE 3 - split timer /counter mode.It also consist of 16bit special function register -PROGRAM COUNTER, DPTR REGISTER. Other components involved in this project are LCD, BUZZER, WIRES, CAPACITORS, RESISTORS, ETC. 3.PRINCIPLE AND OPERATION The operation of this project is very simple . in this project “ WATER LEVEL INDICATOR “ , there are three main condition. THE WATER TANK IS EMPTY. THE WATER TANK IS HALF FULL. THE WATER TANK IS FULL.
Key Words: Micro Controller , Buzzer, Lcd, Water, Indicator
3.1 WATER TANK IS EMPTY When the tank is empty there is no conductive path between the micro controller 8051 and the tank. So the sensor region will not have sufficient biasing voltage hence it remains in cut of region and output across its collector region will be Vc equal to 4.2v . As in this case the micro controller is used in active low region ( which means it considers 0-2 volt for HIGH and 3-5 volt for LOW ) . Now the output of transistor is 4.2 volt hence will approximately be considered as LOW by micro controller . Therefore default value given to seven segment display is 0, hence understood as TANK EMPTY.
1.INTRODUCTION For the near future the water crisis is going to be the chief global risk. One drop of water wasted by us can mean the world for someone else. Hence we need to take initiative to conserve water and keep it safe for upcoming generation . For people across the world , although they have sufficient sources for water , they tend to take it for granted and waste it while storing it. This project not only helps to indicate the water level of the tank but also helps to switch of the pump when water reaches to full level in the tank.This design uses micro controller 8051 ,switches, pump, and LCD for display to water level indicator in the tank. There are various needs for water level indicator, some of them are - overflown problems, to prevent waste of energy, to prevent waste of water, to automatic switch off . 2.COMPONENTS Main component of this project is micro controller .It is a modified Harvard architecture having 40 pins. The architecture provides many functions in a single chip. Following are the properties of the micro controller. 8- bit ALU and 8 -bit accumulator, 8-bit register and 8-bit data bus . 16-bit address line. 128 bytes on chip memory. four register bank. It uses NMOS and CMOS technology.It also has 8-bit TMOD register . It works on the following mode; MODE 0 - 13-bit timer/counter mode. MODE 1 - 16-bit timer/counter mode. MODE 2 - 8-bit auto reload mode.
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