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PROJECT DESCRIPTION

The main aim of this project is to control the temperature of any heating device to operate within a pre-defined temperature limit using a digital  temperature sensor.

The proposed system uses a microcontroller of the 8051 family and a rectified-power supply. In this system, an EEPROM interfaced to the microcontroller stores the information. The digital temperature sensor connected to the microcontroller detects the temperature. The load is controlled by the relay, which is connected to the microcontroller through a relay driver. The temperature is made to set by a set of push-button switches, which is interfaced to the microcontroller.

This system uses a digital temperature sensor which constantly monitors the temperature at a distance. The predefined temperature is set by the push buttons which is stored in the EEPROM memory. When the temperature exceeds a predetermined limit, then the digital temperature sensor gives a signal to the microcontroller to drive a lamp (inplace of  heater) through a relay to retain the temperature to the set value and this information is displayed on the LCD display.

PROJECT HIGHLIGHTS
Easy to use, Self-explanatory kit.
All-inclusive solution kit.
Extensive audio-visuals available.
Branding-free material.
Pre-programmed Microcontroller.
Call/mail for Tech Support from 10 am - 7 pm IST.
BLOCK DIAGRAM
Hardware Requirements
  • Transformer
  • Voltage regulator
  • Diodes
  • Capacitor
  • Resistors
  • Microcontroller (AT89S52)
  • Temperature sensor (DS1621)
  • BC547
  • Relay
  • Lamp
  • LCD (16x2)
Software Requirements
  • Keil compiler
  • Embedded C
Q & A
Q:  How to set the temperature?
A:  Using push button and operation procedure provided with the kit, one can set the temperature.
Q:  Which microcontroller is used in this project?
A:  A 40 pin microcontroller from 8051 family is used in this project.
Q:  Will it sense the body temperature or surrounding?
A:  The IC senses only the surrounding temperature. However the body temperature can be sensed by connecting the IC to a wrist strap.
Q:  What is the temperature sensor is used in this project?
A:  Temperature sensor used is IC DS1621
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