WIRELESS RF WATER LEVEL INDICATOR AND

CONTROLLER

ABSTRACT

AIM:

The main objective of this project is to develop an embedded system, which is a

wireless water level indicator by using RF

IMPLEMENTATION:

This project is implemented 8051 based At89s52 developed board interfaced with

RF Tx, RF Rx, Encoder, Decoder, Buzzer and LCD for displaying the data.

BLOCK DIAGRAM:

WIRED SENSOR

CRYSTAL

RPS

MICROCONTROLLER

AT89S52

RF Tx ENCODER

POWER SUPPLY:

Step DownTransformer

BridgeRectifier

FilterCircuit Regulator

section

RF Rx

LCD

RPS

BUZZER

CRYSTAL

DECODER

MICROCONTROLLER

AT89S52

DESCRIPTION:

Water level or liquid level needs to be monitored in various situations and places,

as in, domestic purposes i.e. In water storage tanks, industrial maintenance like cooling

mechanism etc. The water level needs to be maintained to a particular constant level to

avoid complications.

The main objective of this project is to develop an embedded system, which will

detect the level of water in a storage container based on its resistance range, the system

consists of a group of probes of different lengths, submerged into the liquid/water. The

level is detected based upon the number of probe touching the water surface. This project

contains two embedded system boards among which one is transmitter board to which

wired sensors are connected another is receiver board to which buzzer and lcd are

connected to know the information.

In this project we are using Microcontroller which controls all the operations in

regarding the level of water. These sensors are placed in different threshold levels and are

connected to the controller. Suppose the level of water is being increasing, then

immediately when the water level crossed the sensor at level-1, the information is passed

to the controller of transmitter board from RF Tx through encoder and this information is

received by the RF receiver and the code decodes in the decoder and then given to the

controller, controller checks for the precaution instruction which is given by the

developer and the buzzer will blow which is interfaced to the microcontroller and the

same will be displayed on the LCD.

The system uses a compact circuitry built around Flash version of AT89S52

microcontroller with a non-volatile memory capable of retaining the password data for

over ten years. The user can modify the password. Programs are developed in embedded

C. ISP is used to dump the code into the microcontroller

 

SOFTWARE:

Embedded ‘C’

RIDE to write code

ISP to burn the chip

HARDWARE:

At89s52 based our own developed board

Power Supply

RF Tx

RF Rx

Encoder

Decoder

Buzzer

LCD

ADVANTAGES: Low cost, automated operation, Low Power consumption.

REFERENCES

1. The 8051 micro controller and embedded systems by Mazidi.

2. www.wikipedia.org

3. WWW.atmel.com

4. www.8051projects.com

5. Embedded systems with 8051 by kenith j ayala