03-01-2013, 11:25 AM
MINOR PROJECT PUT COIN AND DRAW POWER
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INTRODUCTION
The Microcontroller based put coin and draw power is latest technology for distribution of electric power for paying guest house, lodges and trains. It can be effectively used to operate to the equipments. Built on the lines of payphones, here is an automatic coin collection devise for pay loads like lamps and air-conditioners tobe used on a private electrical line.
This type of systems is not available in the market. Their ICS may not be easily available. Moreover, for simply functions.
The system makes use of a sensor for detecting the coin and a microcontroller that counts the coins and shows the count on a 7-segment display; when you close the load switch provided in the circuit, the energize to connect the load and the coin count on display starts decrementing. When the count decrements to zero, the relay de-energize to disconnect the load.