electronic instrumentation & plc dkt 314 digital thermometer lcd display using lm35 lecturer: en...
TRANSCRIPT
![Page 1: Electronic Instrumentation & PLC DKT 314 Digital thermometer LCD display using LM35 Lecturer: En Mat Nor Mohamad B Ismail En Zulkifli Husin](https://reader035.vdocuments.net/reader035/viewer/2022081506/56649e865503460f94b896b4/html5/thumbnails/1.jpg)
Electronic Instrumentation & Electronic Instrumentation & PLCPLC
DKT 314DKT 314
Digital thermometer LCD display using LM35
Lecturer: En Mat Nor Mohamad B Ismail
En Zulkifli Husin
![Page 2: Electronic Instrumentation & PLC DKT 314 Digital thermometer LCD display using LM35 Lecturer: En Mat Nor Mohamad B Ismail En Zulkifli Husin](https://reader035.vdocuments.net/reader035/viewer/2022081506/56649e865503460f94b896b4/html5/thumbnails/2.jpg)
SYNOPSISSYNOPSISDigital thermometer designed for
measuring temperature in three scales (Fahrenheit Celsius and Kelvin )
Temperature was measured by LM35DZThe 0804 analog to digital converter
(ADC), convert the dc output provided by LM35D and sends to microcontroller (AT89S52)
The program write in C languageMicrocontroller read binary output from
the A/D converter, performs ASCII code, and sends to a 16x2 line LCD display
![Page 3: Electronic Instrumentation & PLC DKT 314 Digital thermometer LCD display using LM35 Lecturer: En Mat Nor Mohamad B Ismail En Zulkifli Husin](https://reader035.vdocuments.net/reader035/viewer/2022081506/56649e865503460f94b896b4/html5/thumbnails/3.jpg)
OBJECTIVEOBJECTIVEAbility to apply the basic concept of
electronic instrumentationAbility to under stand the basic
concept of electronic instrumentation
Ability to integrate basic sensor temperature circuit and LCD display with 8051
![Page 4: Electronic Instrumentation & PLC DKT 314 Digital thermometer LCD display using LM35 Lecturer: En Mat Nor Mohamad B Ismail En Zulkifli Husin](https://reader035.vdocuments.net/reader035/viewer/2022081506/56649e865503460f94b896b4/html5/thumbnails/4.jpg)
BLOG DIAGRAMBLOG DIAGRAM
LM35 FILTER AMP ADC
8051
Display
![Page 5: Electronic Instrumentation & PLC DKT 314 Digital thermometer LCD display using LM35 Lecturer: En Mat Nor Mohamad B Ismail En Zulkifli Husin](https://reader035.vdocuments.net/reader035/viewer/2022081506/56649e865503460f94b896b4/html5/thumbnails/5.jpg)
PART 1 –LM35PART 1 –LM35
-Voltage increase 10mV/ ⁰C-supply voltage 5V
![Page 6: Electronic Instrumentation & PLC DKT 314 Digital thermometer LCD display using LM35 Lecturer: En Mat Nor Mohamad B Ismail En Zulkifli Husin](https://reader035.vdocuments.net/reader035/viewer/2022081506/56649e865503460f94b896b4/html5/thumbnails/6.jpg)
PART 2- FILTERPART 2- FILTER
LOW PASSFILTERVout=1/2∏RC
R=100kΩ,C=0.002mFVout=795.77Hz
![Page 7: Electronic Instrumentation & PLC DKT 314 Digital thermometer LCD display using LM35 Lecturer: En Mat Nor Mohamad B Ismail En Zulkifli Husin](https://reader035.vdocuments.net/reader035/viewer/2022081506/56649e865503460f94b896b4/html5/thumbnails/7.jpg)
PART 3- AMPLIFIERPART 3- AMPLIFIER
Gain = 1+(R2/R1)R1=10kΩ,R2=10Ω
Gain= 1.001
![Page 8: Electronic Instrumentation & PLC DKT 314 Digital thermometer LCD display using LM35 Lecturer: En Mat Nor Mohamad B Ismail En Zulkifli Husin](https://reader035.vdocuments.net/reader035/viewer/2022081506/56649e865503460f94b896b4/html5/thumbnails/8.jpg)
PART 4 –ADC 0804PART 4 –ADC 0804
Vref=not connectedStep size=19.53mVVout= Vin/ Step size
![Page 9: Electronic Instrumentation & PLC DKT 314 Digital thermometer LCD display using LM35 Lecturer: En Mat Nor Mohamad B Ismail En Zulkifli Husin](https://reader035.vdocuments.net/reader035/viewer/2022081506/56649e865503460f94b896b4/html5/thumbnails/9.jpg)
Full Schematic DiagramFull Schematic Diagram
![Page 10: Electronic Instrumentation & PLC DKT 314 Digital thermometer LCD display using LM35 Lecturer: En Mat Nor Mohamad B Ismail En Zulkifli Husin](https://reader035.vdocuments.net/reader035/viewer/2022081506/56649e865503460f94b896b4/html5/thumbnails/10.jpg)
PROBLEMSPROBLEMSAmplifier – the theoretical not equal
to practical amplifierUneasy to stable the temperature
value.To find the best filter for the
project.
![Page 11: Electronic Instrumentation & PLC DKT 314 Digital thermometer LCD display using LM35 Lecturer: En Mat Nor Mohamad B Ismail En Zulkifli Husin](https://reader035.vdocuments.net/reader035/viewer/2022081506/56649e865503460f94b896b4/html5/thumbnails/11.jpg)
CONCLUTIONCONCLUTIONObjective for this project has
archive.Learn the basic of electronic
instrumentationThis project can control anything
that use this system.