microcontroller based temperature sensor
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This document describes the design and implementation of a temperature monitoring system. It includes a circuit diagram, block diagram, coding logic, algorithm, and flowchart. The system measures temperature using an ADC, converts the reading to Celsius, displays it on an LCD, and compares it to a threshold. If the temperature exceeds the threshold, an LED turns on. It records temperature samples at a user-defined interval to a flash memory. Applications include industrial temperature monitoring and fire alarm systems. The system was implemented on a microcontroller and FPGA for various projects.
microcontroller based temperature sensor
- 2. Introduction
- 6. Coding Logic
- 7. Algorithm
- 8. Flowchart
- 9. Applications
- 10. References
- 12. Measuring the impact of environmental constraints .Data loggers and data acquisition systems .Weather forecast ,automation in electronics devices.Introduction
- 14. Circuit Diagram simulated on PROTEUS
- 15. Coding Logic
- 16. initialize lcdstart the adc to measure tempread adc byte convert adc byte into temperature and record into the flashincrease no of samples by onedisplay temp on lcdcompare the temperature with the threshold valuewaiting time according to recording intervalstart the conversion of ADC..conversion frequency is around 640KHzconvert adc digital output into temperature and store its 2 digit value into flashincrease number of samples by oneconvert decimal to hexadecimal valueadd one to hex value of no of samplesconvert hex value to decimal number Algorithm
- 17. display 2 digit temperature to LCD compare temp value with threshold valueshex value of current temperaturehex value of threshold temperature LED on if current temperature more than threshold valueLED off if current temperature more than threshold valueprovide 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 userdisplay a 16 byte in ASCII string on LCD send the command to LCD send ASCII data to LCD
- 18. Conclusion & ReferencesMazidi 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.AnishThe 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