HPK taruh disini
LM35 temperature sensor is an
electronic component that has the function to change the temperature scale into
electrical quantities in the form of voltage.
Characteristics
of the LM35
1. Temperature sensitivity, with linear
scaling factor between the voltage and temperature of 10 mV/0C, so it can be calibrated directly in Celcius.
2.
Having accuracy or calibration accuracy
of 0.50C at a temperature 50C.
3.
Has a maximum range of operating
temperatures between -550C till +1500C.
4.
work at a voltage of 4 - 30 volts.
5.
Have low currents of less than 60 mA.
6.
Have a low self-heating (low-heating) of
less than 0.10C on the constant air.
7.
Has a low output impedance is 0.1 W for
1 mA load.
8.
Having nonlinearities only about 1/4 0C.
KNOW MICROCONTROLLER ATMEGA-16
AVR
is a series of 8-bit CMOS microcontroller Atmel artificial, based on RISC
architecture (Reduced Instruction Set Computer). Almost all instruction executed
in one clock cycle. AVR has 32 general-purpose registers, timers / counters
flexible with fashion compare, internal and external interrupts, serial UART,
programmable Watchdog Timer, and power saving mode, the internal ADC and PWM. AVR
also has In-System Programmable Flash on-chip allows the program memory to be
reprogrammed in the system using SPI serial connection.
LCD (Liquid Crystal Display)
Liquid Crystal Display or commonly known as the LCD is a
visualization tool that is used to display information in the form of graphs,
number and letters. LCD can be combined with a microcontroller as the output
interface of process conducted by the
microcontroller.
How to create a simulated "
temperature sensor " using proteus
After
identifying two core components of the temperature sensor, next will be
explained how to make the simulation using software proteus isis. simulation
of the temperature sensor using LM35 and ATmega16.
This simulation tutorial focuses on
microcontroller circuit and a simple electronic circuit, because if you are
already adept at using a simple simulation of microcontrollers and electronics,
then it implies that you also are able to do simulations for other electronic
circuits.
Components
used:
1.
ATmega16
2.
Cap
3.
Cap-POL
4.
Crystal
5.
LM016L
6.
LM35
7.
RES
8.
Button
Schematic proteus program that will be created:
Here is a a quick guide to make the
simulation above:
·
Click the Component Mode toolbar and
then click the button P on the lower left side DEVICES menu. List the
components used are as follows :
·
To display the VCC terminal and the
GROUND please click Terminal Mode toolbar. In my LM35 output using an output
terminal, while Port A.0 atmega16 I use an input terminal. This I do to
simplify wiring, because basically the use of input and output terminals are
functioning as a link that interconnects, provided the name of the input and
output terminals are the same (here I use PA0).
·
Then use a measuring instrument voltage
at the output of LM35. I click Virtual Instruments Mode toolbar and then select
the DC voltmeter. Then connect the voltmeter probes each point to be measured
(in this case the output of LM35 with GND).
·
Then fill out the program to ATmega16,
how, double click on the ATmega16, it will appear as shown below. Fill in the
program in the column Program Files (can be a .hex file or .cof) and for its
Clock Frequency is optional (can be changed).
·
and then the simulation is ready for
use, but
before using simulation, needs to be done checking the quantities of each
component in order to avoid errors in the measurement of the simulation.
