2. The trend of miniaturization in electronics has
led to greater heat densities within computer
chips, demanding high performance heat sinks at
smaller and smaller scales.
The equation used within VI program is used to
calculate the resistance of thermistor with respect
to the excitation voltage and the temperature
variation can be measured.
TEAM NO: 5, ECE
3. To Design the Temperature sensor circuit using
Labview simulator.
Analyzing the variation of temperature at
different intervals of time periods on the basis of
the application used.
TEAM NO: 5, ECE
4. TEAM NO: 5, ECE
LabVIEW programs are called as virtual
instruments (VIs)
Because their appearance and operation imitate
actual instruments
However, they are analogous to main programs,
functions and subroutines from popular language
like C, Fortran, Pascal, …
5. TEAM NO: 5, ECE
Front Panel
• Controls = Inputs
• Indicators = Outputs
Block Diagram
• Accompanying “program” for front panel
• Components “wired” together
6. In many systems, temperature control is
fundamental. There are a number of passive and
active temperature sensors that can be used to
measure system temperature, including:
1. thermocouple
2. resistive temperature detector
3. thermistor
4. silicon temperature sensors
TEAM NO: 5, ECE
7. • These sensors provide temperature feedback to
the system controller to make decisions such as,
over-temperature shutdown, turn-on/off cooling
fan, temperature compensation or general
purpose temperature monitor.
TEAM NO: 5, ECE
8. • Signals are input to a sensor, conditioned, converted
into bits that a computer can read, and analyzed to
extract meaningful information.
9. TEAM NO: 5, ECE
We can measure temperature more accurately than
using thermistor.
The sensor circuitry is sealed and not subject to
oxidation.
The LM35 generates higher output voltage than
thermocouple and may not require the output voltage
to be amplified.
10. TEAM NO: 5, ECE
It has an output voltage that is proportional to the Celsius
temperature
The scale factor is .01V/oC
They does not require any external calibration or trimming
It maintains an accuracy
It draws only 60 micro amps from its supply and possesses a
low self-heating capability
15. TEAM NO: 5, ECE
• GPS devices and battery system
• In home application
• In oil exploration
• In radiator heating
• In hot air balloons
• All sorts of electronics devices
and electrical appliances like
refrigerator, stoves, hot water
tank.
16. “The world is a book and those who do not travel read only
one page.”
― Augustine of Hippo
THANK YOU….!!!
