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In this project e show the pattern f auto braking system. In this system we make spend of champion sensor base technology. When vehicle move on the track and in the case of sudden braking sensor sense the restraint and adjacent offer a braking system. We attach this ABS system with each lineament of braking system.either hydrolic system or induction braking. In this concept we use one photosensor with infra tearing lighthearted. Infra loss light transmit the signal in the air and if at that place is any obstruction and so this light is reflected from the heading to the photosensor and further enlistment is on automatically. [pic] in the sender 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 pin no 2 directlly. When pin no 2 become much negative then ic 555 provide a proceeds to the pin no 3. Pin no 4 and 8 is connected to the substantiating add on. For this purpose we use 5 volt regulated office supply for the ic. For the 5 volt regulated power supply we use ic 7805 regulator to provide a 5 volt regulation. Output of the ic 555 is connected to the H keep going circuit finished and through 2 optocoupler components. Optocoupler is 4 pin ic with 2 pin on either side. In this optocoupler there is one excitant 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 cardinal transsitor circuit. In the H bridge deuce electronic transistors are 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 describe of Equipment Quantity Printed Circuit Board 3 89S51 µC1 stepping motor repel (PM 7.5 degree step angle)1 Toy Train1 electromotive force Regulator (7805)1...If you sine qua non to get a full essay, purchase order it on our website: OrderEssay.net

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