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PRECISE TEMPERATURE CONTROL FOR INCUBATORS USED IN HOSPITALS FOR THE PRE BORN CHILD GROWTH

PRECISE TEMPERATURE CONTROL FOR INCUBATORS USED IN HOSPITALS FOR THE PRE BORN CHILD GROWTH. SUBMITTED BY EDGEFX TEAM. ABSTRACT. The controller continuously polls the temperature with certain regular time intervals and displays over the 7_segment display

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PRECISE TEMPERATURE CONTROL FOR INCUBATORS USED IN HOSPITALS FOR THE PRE BORN CHILD GROWTH

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  1. PRECISE TEMPERATURE CONTROL FOR INCUBATORS USED IN HOSPITALS FOR THE PRE BORN CHILD GROWTH SUBMITTED BY EDGEFX TEAM

  2. ABSTRACT • The controller continuously polls the temperature with certain regular time intervals and displays over the 7_segment display • The temperature readings observed by the microcontroller through temperature sensor are compared with the switches programmed temperature value to control the heater (ON/OFF).

  3. BLOCK DIAGRAM

  4. HARD WARE EQUIPMENTS • POWER SUPPLY BLOCK • MICROCONTROLLER (AT89S52/AT89C51) • DS1621 • 7 SEGMENT DISPLAY • BC547 • RESISTORS & CAPACITORS • 1N4007 • RELAY

  5. EMBEDDED SYSTEMS Definition for :- EMBEDDED SYSTEMS • A combination of hardware and software which together form a component of a larger machine. • An example of an embedded system is a microprocessor that controls an automobile engine. • An embedded system is designed to run on its own without human intervention, and may be required to respond to events in real time.

  6. EMBEDDED SYSTEMS

  7. MICRO CONTROLLER AT89S52 • Compatible with MCS®-51 Products • 8K Bytes of In-System Programmable (ISP) Flash Memory • 4.0V to 5.5V Operating Range • Crystal Frequency 11.0592MHZ • Three-level Program Memory Lock • 256 x 8-bit Internal RAM • 32 Programmable I/O Lines • Three 16-bit Timer/Counters • Eight Interrupt Sources • Full Duplex UART Serial Channel • Watchdog Timer

  8. PIN DIAGRAM OF AT89S52

  9. BC547 • The BC547 transistor is an NPN Epitaxial Silicon Transistor. • The BC547 transistor is a general-purpose transistor in small plastic packages. • It is used in general-purpose switching and amplification BC847/BC547 series 45 V, 100 mA NPN general-purpose transistors. • Whenever base is high, then current starts flowing through base and emitter and after that only current will pass from collector to emitter

  10. DS1621 (TEMPARATURE SENSOR) Features: • Measurements require no external components. • Measures temperatures from -55°C to +125°C in 0.5°C increments. Fahrenheit equivalent is -67°F to 257°F in 0.9°F increments. • Temperature is read as a 9-bit value (2-bytetransfer) • Wide power supply range (2.7V to 5.5V) • Converts temperature to digital word in less Than 1 second • Thermostatic settings are user definable and Non volatile. • Data is read from/written via a 2-wire serial interface (open drain I/O lines). • Applications include thermostatic controls, industrial systems, consumer products, thermometers, or any thermal sensitive system

  11. PIN DESCRIPTION OF DS1621 • SDA - 2-Wire Serial Data Input/ Output • SCL - 2-Wire Serial Clock • GND - Ground • TOUT - Thermostat Output Signal • A0 - Chip Address Input • A1 - Chip Address Input • A2 - Chip Address Input • VDD - Power Supply Voltage

  12. SEVEN SEGMENT DISPLAY The segments themselves are identified with lower-case letters "a" through "g," with segment "a" at the top and then counting clockwise.

  13. The LED’S in a seven-segment display are not isolated from each other. Rather, either all of the cathodes, or all of the anodes, are connected together into a common lead, while the other end of each LED is individually available. • This means fewer electrical connections to the package, and also allows us to easily enable or disable a particular digit by controlling the common lead. • There is no automatic advantage of the common-cathode seven-segment unit over the common-anode version, or vice-versa. Each type lends itself to certain applications, configurations, and logic families.

  14. RELAY • IT IS A ELECTRO MAGNETIC SWITCH • USED TO CONTROL THE ELECTRICAL DEVICES • COPPER CORE MAGNETIC FLUX PLAYS MAIN ROLE HERE

  15. SOFTWARE REQUIREMENTS PROGRAMMING LANGUAGES Embedded C , ALP (Assembly Language) COMPILERS: Keil 2.0/3.0uv DUMPING SOFT WARE: Using Micro controller flash Software we are dumping our HEX Code into Micro Controller

  16. KEIL COMPILER WINDOW

  17. BIBILOGRAPHY • The 8051 Microcontroller and Embedded systems” by Muhammad Ali Mazidi and Janice Gillispie Mazidi , Pearson Education. • ATMEL 89S52 Data Sheets. • www.atmel.com • www.beyondlogic.org • www.wikipedia.org • www.howstuffworks.com • www.alldatasheets.com

  18. THANK ‘Q’

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