Pada kesempatan kali ini saya akan menjelaskan mengenai bagaimana cara menggunakan sensor ZMPT101B untuk mengukur tegangan sinus AC 220 volt 50Hz, jadi pada percobaan kali ini benar-benar harus sangat berhati-hati karena tegangan yang dideteksi adalah high voltage dan bisa juga berdaya besar, maka dari itu perlu sekali perhitungan yang cermat dalam tiap langkahnya, alat ini hanya mendeteksi tegangan AC dari input sensor kemudian outputnya adalah tegangan DC sinus, sehingga perlu mengunakan teknik sampling untuk membacanya, dan juga nanti tegangan yang akan dideteksi adalah tegangan puncak dari sinyal sinus tersebut menggunakan perbandingan, untuk lebih jelasnya berikut adalah skema dan programnya
LINK TUTORIAL KALIBRASI SENSOR
a. Minimum System ATMega128
b. Sensor ZMPT101B
c. Trafo Step Down
d. Konfigurasi Fuse AVR DUDE
e. Program Codevision AVR
/*****************************************************
This program was produced by the
CodeWizardAVR V2.05.0 Professional
Automatic Program Generator
© Copyright 1998-2010 Pavel Haiduc, HP InfoTech s.r.l.
http://www.hpinfotech.com
Project :
Version :
Date : 2/22/2017
Author : anak singkong
Company :
Comments:
under license on feb 2017
Chip type : ATmega128
Program type : Application
AVR Core Clock frequency: 16.000000 MHz
Memory model : Small
External RAM size : 0
Data Stack size : 1024
*****************************************************/
#include <mega128.h>
#include <stdio.h>
#include <delay.h>
#include <stdlib.h>
// Alphanumeric LCD Module functions
#include <alcd.h>
#define ADC_VREF_TYPE 0x40
// Read the AD conversion result
unsigned int read_adc(unsigned char adc_input)
{
ADMUX=adc_input | (ADC_VREF_TYPE & 0xff);
// Delay needed for the stabilization of the ADC input voltage
delay_us(10);
// Start the AD conversion
ADCSRA|=0x40;
//ADCSRA|=0x128;
// Wait for the AD conversion to complete
while ((ADCSRA & 0x10)==0);
ADCSRA|=0x10;
//ADCSRA|=0x128;
return ADCW;
}
// Declare your global variables here
int dataadc;
char temp[10];
char temp1[10];
char temp2[10];
char temp3[10];
char temp4[10];
int z,zm,zk,zs;
int i,k,m,s;
int values[300];
void main(void)
{
// Declare your local variables here
// Input/Output Ports initialization
// Port A initialization
// Func7=Out Func6=Out Func5=Out Func4=Out Func3=Out Func2=Out Func1=Out Func0=Out
// State7=0 State6=0 State5=0 State4=0 State3=0 State2=0 State1=0 State0=0
PORTA=0x00;
DDRA=0xFF;
// Port B initialization
// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In
// State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T
PORTB=0x00;
DDRB=0x00;
// Port C initialization
// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In
// State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T
PORTC=0x00;
DDRC=0x00;
// Port D initialization
// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In
// State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T
PORTD=0x00;
DDRD=0x00;
// Port E initialization
// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In
// State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T
PORTE=0x00;
DDRE=0x00;
// Port F initialization
// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In
// State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T
PORTF=0x00;
DDRF=0x00;
// Port G initialization
// Func4=In Func3=In Func2=In Func1=In Func0=In
// State4=T State3=T State2=T State1=T State0=T
PORTG=0x00;
DDRG=0x00;
// Timer/Counter 0 initialization
// Clock source: System Clock
// Clock value: Timer 0 Stopped
// Mode: Normal top=0xFF
// OC0 output: Disconnected
ASSR=0x00;
TCCR0=0x00;
TCNT0=0x00;
OCR0=0x00;
// Timer/Counter 1 initialization
// Clock source: System Clock
// Clock value: Timer1 Stopped
// Mode: Normal top=0xFFFF
// OC1A output: Discon.
// OC1B output: Discon.
// OC1C output: Discon.
// Noise Canceler: Off
// Input Capture on Falling Edge
// Timer1 Overflow Interrupt: Off
// Input Capture Interrupt: Off
// Compare A Match Interrupt: Off
// Compare B Match Interrupt: Off
// Compare C Match Interrupt: Off
TCCR1A=0x00;
TCCR1B=0x00;
TCNT1H=0x00;
TCNT1L=0x00;
ICR1H=0x00;
ICR1L=0x00;
OCR1AH=0x00;
OCR1AL=0x00;
OCR1BH=0x00;
OCR1BL=0x00;
OCR1CH=0x00;
OCR1CL=0x00;
// Timer/Counter 2 initialization
// Clock source: System Clock
// Clock value: Timer2 Stopped
// Mode: Normal top=0xFF
// OC2 output: Disconnected
TCCR2=0x00;
TCNT2=0x00;
OCR2=0x00;
// Timer/Counter 3 initialization
// Clock source: System Clock
// Clock value: Timer3 Stopped
// Mode: Normal top=0xFFFF
// OC3A output: Discon.
// OC3B output: Discon.
// OC3C output: Discon.
// Noise Canceler: Off
// Input Capture on Falling Edge
// Timer3 Overflow Interrupt: Off
// Input Capture Interrupt: Off
// Compare A Match Interrupt: Off
// Compare B Match Interrupt: Off
// Compare C Match Interrupt: Off
TCCR3A=0x00;
TCCR3B=0x00;
TCNT3H=0x00;
TCNT3L=0x00;
ICR3H=0x00;
ICR3L=0x00;
OCR3AH=0x00;
OCR3AL=0x00;
OCR3BH=0x00;
OCR3BL=0x00;
OCR3CH=0x00;
OCR3CL=0x00;
// External Interrupt(s) initialization
// INT0: Off
// INT1: Off
// INT2: Off
// INT3: Off
// INT4: Off
// INT5: Off
// INT6: Off
// INT7: Off
EICRA=0x00;
EICRB=0x00;
EIMSK=0x00;
// Timer(s)/Counter(s) Interrupt(s) initialization
TIMSK=0x00;
ETIMSK=0x00;
// USART0 initialization
// USART0 disabled
UCSR0B=0x00;
// USART1 initialization
// USART1 disabled
UCSR1B=0x00;
// Analog Comparator initialization
// Analog Comparator: Off
// Analog Comparator Input Capture by Timer/Counter 1: Off
ACSR=0x80;
SFIOR=0x00;
// ADC initialization
// ADC Clock frequency: 1000.000 kHz
// ADC Voltage Reference: AVCC pin
ADMUX=ADC_VREF_TYPE & 0xff;
ADCSRA=0x84;
// SPI initialization
// SPI disabled
SPCR=0x00;
// TWI initialization
// TWI disabled
TWCR=0x00;
// Alphanumeric LCD initialization
// Connections specified in the
// Project|Configure|C Compiler|Libraries|Alphanumeric LCD menu:
// RS - PORTA Bit 0
// RD - PORTA Bit 1
// EN - PORTA Bit 2
// D4 - PORTA Bit 4
// D5 - PORTA Bit 5
// D6 - PORTA Bit 6
// D7 - PORTA Bit 7
// Characters/line: 16
lcd_init(16);
while (1)
{
for(i=0;i<300;i++) {
values[i] = read_adc(0);
if (values[i] >= z) {
z = values[i];
}
}
for(k=0;k<300;k++) {
values[k] = read_adc(0);
if (values[k] >= zk) {
zk = values[k];
}
}
for(m=0;m<300;m++) {
values[m] = read_adc(0);
if (values[m] >= zm) {
zm = values[m];
}
}
for(s=0;s<300;s++) {
values[s] = read_adc(0);
if (values[s] >= zs) {
zs = values[s];
}
}
if((z >= zk)&&(z >= zm)&&(z >= zs)){
itoa(z,temp);
}
if((zk >= z)&&(zk >= zm)&&(zk >= zs)){
itoa(zk,temp);
}
if((zm >= z)&&(zm >= zk)&&(zm >= zs)){
itoa(zm,temp);
}
if((zs >= z)&&(zs >= zk)&&(zs >= zm)){
itoa(zs,temp);
}
lcd_gotoxy(0,0);
lcd_putsf("ADC= ");
lcd_puts(temp);
delay_ms(200);
z = 0;
zk = 0;
zm = 0;
zs = 0;
}
}
f. VIDEO HASILNYA
No comments:
Post a Comment