water-level.pdf

Application Notes

Brigosha Technologies

Water Level Indicator

Introduction

An Water Level Indicator may be

defined as a system by which we can get

the information of any water reservoir.

Water level indicator system are quite

useful to reduce the wastage of water

from any reservoir, while filling such

reservoir.

A simple water level indicator can be

made using the EAB. For this you may

design a water sensor by using any

The wire with Black colour is connected

to Vcc of the EAB. The wires with

colours Blue, Red, Green & Yellow are

adjusted to check Level1, Level2, Level3

and Level4 respectively. Each of these

four wires are connected to the

amplifier. This amplifier will amplify the

signal and will provide the respective

logic to the microcontroller. Then the

program logic inside the

microcontroller will give the respective

Email: [email protected], Website: www.brigosha.comCopyright: Brigosha reserves all rights in the event of industrial property rights. We reserve all rights of disposal such as copying and passing on to third parties. Brigosha is the registered trademark of Brigosha Technologies Pvt. Ltd. Specifications within this document are preliminary and subject to change without notification. Document is not intended for publication.

A simple water level indicator can be

made using the EAB. For this you may

design a water sensor by using any

conducting wires. In this project we

have designed the sensor to measure

water up to four levels.

Take 5 segments of insulated

conducting wires. Tore out the ends of

these wires, approximately 1cm. Adjust

the length of the wire segments

according to the water levels. In the

following diagram it has been displayed

with 5 different colours.

logic to the microcontroller. Then the

program logic inside the

microcontroller will give the respective

output.

Power

Level1

Level2

Level3

Level4

Application Notes

Components

The Components required for building the

water level indicator application are:

� Embedded Application Board

� LED board

� Water Sensor (Conducting Wires)

� Jumpers

� Water Beaker

� Transistor (BC548)

� Resistor(1K and 470 Ohm)

� Breadboard or Vero board. (1 nos)

� Power Supply (9V DC)

� Water

� Salt (optional)

Copyright: Brigosha reserves all rights in the event of industrial property rights. We reserve all rights of disposal such as copying and passing on to third parties. Brigosha is the registered trademark of Brigosha Technologies Pvt. Ltd. Specifications within this document are preliminary and subject to change without notification. Document is not intended for publication.

Application Notes

Block Diagram

Block level representation of the different components of the water level indicator

application.

Schematic Diagram

The Schematic diagram illustrates the circuit connections for designing the application.

AmplifierLevel

SensorEAB

Level

Indicator

Rb


Power

Level1

Level2

Level3

Level4

Vcc

EAB

nSS2

SCK2

SDI2

SD02

LED

1

LED

2LED

3

LED

4

RC0 RA5 RB4 RC5

Rb

Rb

Rb

Re

Re

Re

Re

Application Notes

Connection Description

Here, each of the wires of the sensor is

connected to an amplifier section. This

section consists of an n-p-n transistor

BC548, one base resistor (1000 Ohm)

and one Emitter resistor (470 Ohm).

The sensor’s available terminal is

connected to one end of the base

resistor. The other end of this resistor is

connected to the base of the transistor.

The collector terminal of the transistor

is directly connected to Vcc. Emitter

resistor is connected in-between

Emitter terminal of the transistor and

GND. The required output of this

The above arrangement should be

repeated four times, for each sensor

terminal. The respective outputs should

be connected to the EAB pins nSS2,

SCK2, SDI2 and SDO2. For this project

the above pins should take data from

Level1, Level2, Level3 and Level4

respectively.

For output, the LEDs are connected to

RC0, RA5, RB4 and RC5.

Note: Any GPIO pin can be used for

this project. Set the particular GPIOpins to output and provide a high


resistor is connected in-between

Emitter terminal of the transistor and

GND. The required output of this

amplifier section will be available from

the junction of the emitter and the

resistor.

Note: Any GPIO pin can be used for

this project. Set the particular GPIOpins to output and provide a high/low signal to the pin.

Application Notes

Code Flow Chart

Start

1. Define System Clock

2. Library Header File Declaration

Set Oscillator Frequency

Configure I/O pins

while(1)

Yes

No

Main Function()

If

SS2=SCK2=SDI2=SDO2

=0

Read All the Required Port Bits

RC0= Blink

RA5=RB4=RC5=0

YesIfRC0= 1


Yes

No

If

SS2=1,

SCK2=SDI2=SDO2=0

RC0= 1

RA5=RB4=RC5=0

Yes

No

If

SS2=SCK2=1,

SDI2=SDO2=0

RC0=RA5= 1

RB4=RC5=0

Yes

No

If

SS2=SCK2=SDI2=1,

SDO2=0

RC0=RA5=RB4=1,

RC5=0

YesIf

SS2=SCK2=SDI2=SDO2

=1

RC0=RA5=RB4=RC5=

Blink

Application Notes

Source Code

The Source code shown below is the

firmware to be flashed in the

microcontroller of the Embedded

Application Board. The Source code is

commented for better understanding of

the user.

Refer to the EAB User Guide and the

EAB Programming Guide for more

details on how to Flash(burn)

program(Source Code) in the

microcontroller of the Embedded

Application Board.


Application Notes


Application Notes

How to Operate

This is a simple plug-and-play type

project. Follow the steps mentioned

below in order to operate the project…

�Power the EAB, Sensor System and the

Amplifier Circuit with 9V DC. Carefully

check the polarities and then connect

them.

� Place the system in a suitable area.

� Carefully Fill the reservoir and watch.

Output

If there is no water in the reservoir, the

first LED will continue blinking. As you

start filling the reservoir, the

corresponding LEDs will start glowing.

As soon as the water level reaches the

maximum allowable limit, all the LEDs

will start blinking, simultaneously.


More Projects

Various other applications can be built

using Water Level Sensor and

Embedded Application Board.

Some such applications are given below:

� Water Controlling Syatem

� Alarm systems

� Smart Water Pump.

Documents

water-level.pdf