Wireless Mobile Charger Using Induction With Anti-Theft Protection System

Presented by A.swathi

ContentsExisting problemProposed SystemIntroductionBlock DiagramWorking Power SupplyAdvantagesApplicationsConclusion

Existing problemWith mobile phones becoming a basic part of life, the

recharging of mobile phone batteries has always been a problem.

The mobile phones vary in their talk time and battery stand by according to their manufacturer and batteries.

All these phones irrespective of their manufacturer and batteries have to be put to recharge after the battery has drained out.

Proposed SolutionThe main objective of this current proposal is to make the

recharging of the mobile phones independent of their manufacturer and battery make.

In this paper a new proposal has been made so as to make the recharging of the mobile phones is done using induction principle.

IntroductionThis is based on Inductive charging uses an electromagnetic

field to transfer energy between two objects. This is usually done with a charging station. Energy is sent through inductive coupling to an electrical device,

which then can use that energy to charge batteries. Because there is a small gap between the two coils employed in

each of the sender and receiver of the energy within the respective devices, inductive charging is considered a short-distance wireless energy transfer, despite the fact that there are typically more wires used with inductive charging than direct-contact charging, because it frees the user from having to deal with wires between the two devices. 

Aim of the projectThis is based on Inductive charging uses

an electromagnetic field to transfer energy between two objects. This is usually done with a charging station.

Induction chargers typically use an induction coil to create an alternating electromagnetic field from within a charging base station, and a second induction coil in the portable device takes power from the electromagnetic field and converts it back into electrical current to charge the battery.

Block Diagram

WorkingHere we using induction effect to charge the

mobile.The mobile to be charged to be placed on inductive

generation coils.The project is used in multiple ways such as in

securing the mobile from loss or theft as well as it gets charged wirelessly.

If any one wants to steal it automatically a 60 Db siren will get a switched ON. The system is provided with a control switch it has to be made ON such as if the user wants to charge mobile it will be placed on this inductive plates .

Once the charging is completed if it is removed without making the switch OFF automatically siren will be alerted.

ROM - 8K bytesRAM - 256 bytesTimer - 3I/O pins - 32Serial port - 1Interrupt sources - 8

Features of AT89S52

Pin Diagram1234567891011121314151617181920

4039383736353433323130292827262524232221

P1.0P1.1P1.2P1.3P1.4P1.5P1.6P1.7RST

(RXD)P3.0(TXD)P3.1

(T0)P3.4(T1)P3.5

XTAL2XTAL1

GND

(INT0)P3.2(INT1)P3.3

(RD)P3.7(WR)P3.6

VccP0.0(AD0)P0.1(AD1)P0.2(AD2)P0.3(AD3)P0.4(AD4)P0.5(AD5)P0.6(AD6)P0.7(AD7)EA/VPPALE/PROGPSENP2.7(A15)P2.6(A14)P2.5(A13)P2.4(A12)P2.3(A11)P2.2(A10)P2.1(A9)P2.0(A8)

AT89S52

1.1. Ground2. Vcc +5V3. Contrast control4. Register select (RS)5. Read/Write (RD/WR)6. Enable (EN) 7 – 14 pins all are data pins D0 – D715. Vcc +5V }16. Ground }

Pin Description of LCD

For backlight purpose

Power SupplyThis project uses regulated 5V,9V 500mA power

supply.7805 three terminal voltage regulator is used for voltage regulation. Bridge type full wave rectifier is used to rectify the ac out put of secondary of 230/18V step down transformer

AdvantagesFit & Forget systemWastage of time can be reducedEase of operationReduce human effortUser friendlyNo need to carry charger

Applications Inductive charging is used for implanted medical

devices that require periodic or even constant external power, and for electric hygiene devices, such as toothbrushes and shavers, that are frequently used near or even in water. Inductive charging makes charging mobile devices and electric vehicles

ConclusionThe project “Wireless Mobile Charger using

induction with anti-theft prevention system “ is designed using advanced embedded technology. The proposed method is verified to be highly beneficial for all the Mobile phones.

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