Abstract: This paper focused on system to automate the process of measuring milk in tank and flow control of water. In milk measuring system we use Ultrasonic sensor to sense level of milk and microcontroller to calculate the distance between milk level and receiver by time of span method. LCD is used to display the milk level in terms of liters and percentage. If the milk level is above the specific level of milk tank then control valve is OFF so stop the milk entering. If the milk level is below the specific level of milk tank then control valve is ON. In water flow control, we use capacitive proximity sensor. It can sense not only conductor or metallic material but also non-conductor. The sensing distance depends upon distance. In this flow control system, if the milk can is present in front of pipe or tap of water, then motor is ON by changing the capacitance value and if milk can is not present then motor is OFF.
Keywords: Ultrasonic sensor, Infrared sensor, 0AT89C51 Microcontroller, LCD display, Motor.