INDICATOR AND CONTROLLER FOR AUTOMATION FOR COTTON PURIFICATION PROCESS IN SPINNING MILLS USING 89S52 MCU

If a system is developed for automation of pump for filling the container, no operator is required for supervising the system. Automatic water level controllers are already available in the market. But these controllers are not suitable for this application, as the electrodes are having direct contact with the content. As it is petrochemical based liquid, direct contact with electrodes is not acceptable. Wine Yard implemented a unique system for this application by using magnetic sensors. The sensors are fixed at specified locations on the container. A floating magnet floats on the liquid and triggers the magnetic sensors one-by-one based on the liquid level. Microcontroller monitors the liquid level and the level displayed on LCD. If the maximum level is reached, the microcontroller switches off the motor. If the liquid reaches the lower level, the controller drives the driver circuit and switches on the motor. A thermistor is used as temperature sensor. The temperature sensor LM35 senses the temperature and converts it into an electrical signal, which is applied to the micro controller through ADC. The analog signal is converted into digital format by the analog-to-digital converter (ADC). The sensed and set values of the temperature are displayed on the 16x2-line LCD. The micro controller drives a relay to control the Cooling FAN. The microcontroller compares the temperature with a ref constant and if the temperature increases beyond 390C, the controller drives the siren circuit to alert the operator. This project is specially designed for spinning / cotton process Industries. Direct contact of level probes with the content / liquid is completely avoided in this project. Magnetic sensors / Reed switches are used as level sensors. Thermistor is used as temperature sensor. The level of the content and its temperature is monitored by the microcontroller and displayed on LCD. Relay driver circuit can be activated by sensing “Level Full” and “Low Level” indicators and operates the motor automatically. Siren driver circuit would be activated by thermistor sensor. This project uses regulated 5V, 500mA power supply. 7805 three terminal voltage regulator is used for voltage regulation. Bridge type full wave rectifier is used to rectify the ac out put of secondary of 230/12V step down transformer.

  • Project Category : IEEE Projects
  • Project Year : 2014-2015
  • Department
  • M.Tech,
  • Domain
  • Embedded system,
  • Technology
  • C,
  • Avilable city
  • Hyderabad,

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