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microcontroller based temperature sensor

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Transcript

  • 1. Temperature Meter
  • 2. Contents
  • 12. Measuring the impact of environmental constraints .
    Data loggers and data acquisition systems .
    Weather forecast ,automation in electronics devices.
    Introduction
  • 13. Design and Implementation
  • 14. Circuit Diagram simulated on PROTEUS
  • 15. Coding Logic
  • 16. initialize lcd
    start the adc to measure temp
    read adc byte
    convert adc byte into temperature and record into the flash
    increase no of samples by one
    display temp on lcd
    compare the temperature with the threshold value
    waiting time according to recording interval
    start the conversion of ADC..conversion frequency is around 640KHz
    convert adc digital output into temperature and store its 2 digit value into flash
    increase number of samples by one
    convert decimal to hexadecimal value
    add one to hex value of no of samples
    convert hex value to decimal number
    Algorithm
  • 17. display 2 digit temperature to LCD
    compare temp value with threshold values
    hex value of current temperature
    hex value of threshold temperature
    LED on if current temperature more than threshold value
    LED off if current temperature more than threshold value
    provide measuring interval delay
    converts the adc 8 bit output to 2-digit temperature value in ASCII
    convert the 4 digit decimal into 2 byte hex
    Input in t3 t2 t1 t0 and output in hex1 hex0
    provide threshold value range from 20 to 49 degree celcius for user
    provide recording interval range from 01 to 99 secs for user
    display a 16 byte in ASCII string on LCD
    send the command to LCD
    send ASCII data to LCD
  • 18. Conclusion & References
    Mazidi and Mazidi-8051,PIC & Embedded system using assembly language programming-Pearson Education.
    www.electronics-project-design.com
  • 19. Temperature monitoring system in industries as well as in fire alarm systems where high rise in temperature results in fire or damage to equipments.
    Monitor the ambient temperature and record the rise or fall in temperature.
    Applications
  • 20. The authors wish to thank Prof D.V. Bhoir ,Prof MrsSwapnali, Prof Mrs.Shilpa, and Prof Mr.Anish
    The authors extend their heartfelt gratitude to Sir Ajay and Sir Ramao for their valuable guidance in debugging our project.
    Acknowledgements
  • 21. Derrick D’souza(7)-simulation on PROTEUS,PCB making,downloading on FPGA kit,making UC report & editing VHDL report ,soldering UC project.
    Ravi Teja(8)-idea for UC project,soldering UC project, burning of program on UC,programming & debugging of VHDL project.
    GauravDaryanani(9)-idea for VHDL project,PCBmaking,burning of program on UC.,making VHDL report,soldering UC.
    Contribution