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In this project e show the conceit f auto braking system. In this system we make drop of iodin sensor base technology. When vehicle move on the driveway and in the case of sudden braking sensor sense the bulwark and adjacent offer a braking system. We attach this ABS system with all lineament of braking system.either hydrolic system or induction braking. In this concept we use one photosensor with infra tearing lighthearted. Infra going light transmit the signal in the air and if at that place is any obstruction and so this light is reflected from the quarry to the photosensor and further enlistment is on automatically. [pic] in the vector components we use infra red led as a transmitter and photodiode as a receiver. This photodiode is connected to the ic 555. ic 555 is a 8 pivot monostable timer ic. Photodiode is connected to the reefer no 2 directlly. When pin no 2 become to a greater extent negative then ic 555 provide a reduce to the pin n o 3. Pin no 4 and 8 is connected to the substantiating add on. For this purpose we use 5 quintet regulated office supply for the ic. For the 5 volt regulated power supply we use ic 7805 governor to provide a 5 volt regulation. Output of the ic 555 is connected to the H keep going circuit by and through 2 optocoupler components. Optocoupler is 4 pin ic with 2 pin on either side. In this optocoupler there is one remark led and one photodiode in the otherwise side. Optocoupler provide a isolation between the input and output circuit through the optical isolation circuit.

Dc ride is control by the h bridge circuit. H bridge is combination of quadruple transsitor circuit. In the H bridge deuce electronic transistors a! re npn and two transistors are pnp transistor. With the avail of this four transistor we control the direction of the dc motor automatically. LIST OF COMPONENTS take a leak of Equipment Quantity Printed Circuit Board 3 89S51 µC1 stepping motor locomote (PM 7.5 degree step angle)1 Toy Train1 electromotive force Regulator (7805)1...If you trust to get a full essay, purchase order it on our website: OrderEssay.net

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