Model no.18A:
The display unit, which is used to display the results of corresponding temperature of a nuclear plant and to generate a warning signal in the event of rising temperature beyond limits as set. Here the controller continuously polls the temperature with certain regular time intervals and displays over the 7_segment display unit for the Microcontroller to enable the whole operation by executing the program. The temperature readings observed by the microcontroller through temperature sensor are compared with the programmed temperature value to in turn operate the relay that switches on a warning device. The power supply consists of a step down transformer 230/12V, which steps down the voltage to 12V AC. This is converted to DC using a Bridge rectifier. The ripples are removed using a capacitive filter and it is then regulated to +5V using a voltage regulator 7805 which is required for the operation of the microcontroller and other components.
For more details about this project, please visit http://www.efxkits.com/project-kit/microcontroller/1069.html
HARDWARE REQUIREMENTS:
Microcontroller, Relay Driver, 7-segment display unit, Temperature sensor, Transformer, Crystal oscillator, Diodes, Voltage Regulator, LED, Resistors, Capacitors, Push Buttons, Relay, LoadSOFTWARE REQUIREMENTS:
Keil compiler, Languages: Embedded C or Assembly
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