Water Level Indicator
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- Archibald Reynolds
- 6 years ago
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1 Brigosha Technologies Application Notes Water Level Indicator Introduction An Water Level Indicator may be definedasasystembywhichwecanget 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 conducting wires. In this project we have designed the sensor to measure wateruptofour levels. 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 output. 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. Level4 Level3 Level2 Level1 Power info@brigosha.com, Website:
2 Components The Components required for building the water level indicator application are: Embedded Application Board LEDboard Water Sensor(Conducting Wires) Jumpers Water Beaker Resistor(1K and 470 Ohm) BreadboardorVeroboard.(1nos) PowerSupply(9VDC) Water Salt(optional) Transistor(BC548)
3 Block Diagram Block level representation of the different components of the water level indicator application. Level Sensor Amplifier EAB Level Indicator Schematic Diagram The Schematic diagram illustrates the circuit connections for designing the application. Rb Re SD02 Rb SDI2 Re EAB Level4 Rb SCK2 nss2 Level3 Re RC0 RA5RB4 RC5 Level2 Level1 Vcc Rb LED 1 LED 2 LED 3 LED 4 Power Re
4 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 amplifier section will be available from the junction of the emitter and the resistor. 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,RB4andRC5. Note: AnyGPIOpincanbeusedfor this project. Set the particular GPIO pins to output and provide a high /lowsignaltothepin.
5 Code Flow Chart Start Main Function() 1. Define System Clock 2. Library Header File Declaration Set Oscillator Frequency Configure I/O pins while(1) Read All the Required Port Bits SS2=SCK2=SDI2=SDO2 =0 No SS2=1, SCK2=SDI2=SDO2=0 No SS2=SCK2=1, SDI2=SDO2=0 No SS2=SCK2=SDI2=1, SDO2=0 No SS2=SCK2=SDI2=SDO2 =1 RC0= Blink RA5=RB4=RC5=0 RC0= 1 RA5=RB4=RC5=0 RC0=RA5= 1 RB4=RC5=0 RC0=RA5=RB4=1, RC5=0 RC0=RA5=RB4=RC5= Blink
6 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.
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8 Application Notes How to Operate Output This is a simple plug-and-play type there is no water in the reservoir, the project. Follow the steps mentioned first LED will continue blinking. As you below in order to operate the project start filling the reservoir, the Power the EAB, Sensor System and the corresponding LEDs will start glowing. Amplifier Circuit with 9V DC. Carefully As soon as the water level reaches the check the polarities and then connect maximum allowable limit, all the LEDs them. will start blinking, simultaneously. Place the system in a suitable area. Carefully Fill the reservoir and watch. Some such applications are given below: More Projects Various other applications can be built Water Controlling Syatem using Alarm systems Water Level Sensor Embedded Application Board. and Smart Water Pump.
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