coin based mineral water system pdf

Abstract
Coin Based Mineral Water System project is developed for the users to use coin operated mineral water system.
It consists of a Coin box, coin sensor, water sensor, Microcontroller unit, Mineral water tank, pump motor etc.
The user can use Mineral water by inserting coins in the coin box. A coin sensor is connected in the coin box. According to the coin dropped in the coin box, the sensor sends signal to the microcontroller unit. The microcontroller analyses the number of coins dropped in the coin box and accordingly it operates the pump motor.The pump motor delivers the mineral water from the tank according to the validity of the coin. If the water in the water tank reaches minimum level, the microcontroller operates a buzzer. Thus the tank can be filled immediately.The Microcontroller programs are written in assembly language. The microcontroller used is PIC 16F73.This will be very useful in industries, houses, institutions etc.