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Wireless Fuel Level Indicator
- 1. PROJECT ON DIGITALFUEL LEVEL INDICATOR SUBMITED BY- NAME ROLL NO. ARPAN ROY CHOUDHURI 10200312010 SUSANTA GHOSAL 10200112085 ARKAPRABHA PAL 10200312009 SWARNAVA MUKHERJEE 10200312054 KALYANIGOVERNMENTENGINEERINGCOLLEGE 30/11/2015 1
- 2. ACKNOWLEDGEMENT We would liketo thank our respected project mentor Mr. Sandip Nandi sir for his active co-operation with us in this project .Without his help we wouldn't have even thought of such an interesting topic. 30/11/2015 2
- 3. CONTENTS NAME OFTHE TOPIC PAGE NO. Abstract 4 Introduction 5 Why we need it 6 Circuit Diagram 7 Components 8 Block Diagram 9 Power Source 10 Circuit Operation 12 Receiver 13 OP-AMP as Comparator 14 Specifications of LM358 15 Estimated Project Cost 16 Advantage 17 Expected Problems 18 Proposed Solution 19 Block Diagram 20 Reference 22 30/11/2015 3
- 4. ABSTRACT Today inthis digitalized world, if the fuel indicator in the automobiles is also made digital it will help to know the amount of fuel available in the fuel tank in the form of digital logic i.e HIGH or LOW. Communication in a wireless medium between an IR transmitter and receiver is the mechanism which is used to find out the fuel level . The main feature in this fuel level indicator is that, the reserve condition is pre-informed to the user with an alarm, which helps to tune it to the reserve position before the engine stops and this helps to avoid knocking and engine damage. 30/11/2015 4
- 5. INTRODUCTION The aimof our project is to monitor the level of the fuel in the fuel tank and to automatically indicate the level information . A Fuel indicator is used to alarm the level of fuel in the fuel tank of a vehicle. It gives an alarm when the fuel in the tank is below the critical level. 30/11/2015 5
- 6. WHY WE NEEDIT ? Monitor the level of fuels inside the fuel meter. Indication of the threshold level of fuel in the tank. Attention. Safe driving. 30/11/2015 6
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- 8. COMPONENTS PCB Board{ 1 PCS } Bread Board IC 7805 12 volt Battery Battery cap Resistance-100ohm,330ohm,10k(2 pieces),4.7k Capacitor 0.33 uF { 2 PCS} Potentiometer LED of different colours(3 pieces) IR transmitter IR receiver( Photo diode ) OPAMP (LM358) Connecting Wires Soldering kit 30/11/2015 8
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- 10. Power Source Weneed 5 volt Power Supply for our circuit. Most Vehicles run on 12 volt Battery. We may use 7805 voltage regulator IC to convert 5 volt from 12 volt Battery of the car. 30/11/2015 10
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- 12. Circuit Operation TheIR transmitter sends an IR radiation in the infrared wavelength region(760 nm). When the fuel level is above the threshold level the radiated light scatters but when it is below the threshold level it falls upon a receiver. Due to the falling of light on the receiver a potential difference is created across the ends. This potential difference is recognized by an Op-Amp as HIGH or LOW. The output of Op-Amp is sent to LED or a Buzzer. 30/11/2015 12
- 13. RECEIVER Here Photodiode is used to capture emitted light of IR LED. A Photo diode is a reverse biased silicon or germanium pn junction in which reverse current increases when the junction is exposed to light. It is a semiconductor diode that, when exposed to light, generates a potential difference or changes its electrical resistance. When no light is incident on the pn junction of photo diode, the reverse current is extremely small. This is called DARK CURRENT. 30/11/2015 13
- 14. OPAMP AS COMPARATOR The output of Photo diode is analog voltage. But we need digital output i.e. HIGH or LOW. So we use OPAMP LM358 as comparator. V0 = High when V1 > V2 V0 = Low when V1 < v2 30/11/2015 14
- 15. SPECIFICATIONS OF LM358 The LM-358 IC consists of two independent operational amplifiers which were designed specifically to operate from a single power supply over a wide range of voltages. 30/11/2015 15
- 16. ESTIMATED PROJECT COST PCB BOARD 40 BREAD BOARD 70 IC 7805 10 OP-AMP LM-358 20 IR TRANSMITTER & RECEIVER 30 L.E.D 15 BUZZER 30 POTENIOMETER 15 RESISTANCE 20 CAPACITOR 10 CONNECTING WIRE 20 BATTERY & CAP 60 SOLDING MECHINE 300 SOLDING WIRE 50 TOTAL COST = 670 30/11/2015 16
- 17. Advantages Easy installation. Low maintenance . Compact elegant design . Can be operated using an external battery supply . Fully automatic, saves man power . Consume very little energy, ideal for continuous operation. Show clear indication of fuel levels . 30/11/2015 17
- 18. EXPECTED PROBLEM Themain disadvantage of our circuit is it can only indicate when the fuel level is below the threshold level. It will not indicate the fuel status when it is decreasing, if the level is above threshold level. Certainly it will indicate the user about the fuel level , when it will go below threshold. The user at that moment can be at a situation where he/she can’t get the fuel. 30/11/2015 18
- 19. PROPOSED SOLUTION Anarray of IR sensors are properly connected in the tank at different depths. The outputs of the OPAMPs are then applied to a decoder. The decoder outputs are then connected properly to the indicators to provide the latest status of fuel level to the user. More the No. of sensors in the array ,better is the performance. 30/11/2015 19
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- 21. From theblock diagram we can have eight output combinations . we will select only the following combinations. ABC LED COLOUR FUEL STATUS 0dd GREEN VERY GOOD 1d0 YELLOW MODERATE 111 RED FUEL TO BE REFILLED 30/11/2015 21
- 22. REFERENCES http://www.instructables.com/id/Infrared-Transmitter-and-Receiver/ https://learn.sparkfun.com/tutorials/ir-communication http://www.roboticsbible.com/making-of-ir-sensor-module.html www.elprocus.com/infrared-ir-sensor-circuit-and-working/ vepamon.com/products/sensors/lld-indicator/ www.buildcircuit.com/experiment-with-lm358/ 30/11/2015 22
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