Es gibt 1000 S0-Impulse pro kWh = 1000Imp/kWh
Arduino Beispiel:
/*
Web Server
A simple web server that shows the value of the analog input pins.
using an Arduino Wiznet Ethernet shield.
Circuit:
* Ethernet shield attached to pins 10, 11, 12, 13
* Analog inputs attached to pins A0 through A5 (optional)
created 18 Dec 2009
by David A. Mellis
modified 9 Apr 2012
by Tom Igoe
*/
#include <SPI.h>
#include <Ethernet.h>
// Enter a MAC address and IP address for your controller below.
// The IP address will be dependent on your local network:
byte mac[] = {
0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED
};
IPAddress ip(192, 168, 0, 17);
//zaehler <-
const byte counterPin = 2;
unsigned long millisBetween;
unsigned long lastMillis;
byte lastState;
// zaehler ->
// Initialize the Ethernet server library
// with the IP address and port you want to use
// (port 80 is default for HTTP):
EthernetServer server(80);
void setup()
{
// start the Ethernet connection and the server:
Ethernet.begin(mac, ip);
server.begin();
// <– Zaehler
pinMode(counterPin, INPUT);
digitalWrite(counterPin, LOW);
millisBetween = 0;
lastMillis = 0;
lastState = 0;
Serial.begin(9600);
// Zaehler –>
}
void loop()
{
//<–Zaehler
unsigned char bitMaskToSend = 0;
unsigned long time = millis();
byte val = digitalRead(counterPin);
if (val == HIGH && lastState == LOW) {
millisBetween = time-lastMillis;
lastMillis = time;
bitSet(bitMaskToSend,1);
}
lastState = val;
unsigned long dataToWrite = millisBetween;
if (bitRead(bitMaskToSend,1)) {
Serial.print((char)(‚A‘));
Serial.println(3600000/dataToWrite);
}
// Zaehler–>
{
// listen for incoming clients
EthernetClient client = server.available();
if (client) {
Serial.println(„new client“);
// an http request ends with a blank line
boolean currentLineIsBlank = true;
while (client.connected()) {
if (client.available()) {
char c = client.read();
Serial.write(c);
// if you’ve gotten to the end of the line (received a newline
// character) and the line is blank, the http request has ended,
// so you can send a reply
if (c == ‚\n‘ && currentLineIsBlank) {
// send a standard http response header
client.println(„HTTP/1.1 200 OK“);
client.println(„Content-Type: text/html“);
client.println(„Connection: close“); // the connection will be closed after completion of the response
client.println(„Refresh: 5“); // refresh the page automatically every 5 sec
client.println();
client.println(„<!DOCTYPE HTML>“);
client.println(„<html>“);
// Ausgabe der Watt Zahl von DigitalPin 2
if (c == ‚\n‘ && currentLineIsBlank) {
// send a standard http response header
client.println(„HTTP/1.1 200 OK“);
client.println(„Content-Type: text/html“);
client.println(„<br />“);
client.print(3600000/dataToWrite);
client.print(„Watt“);
break;
} }
if (c == ‚\n‘) {
// you’re starting a new line
currentLineIsBlank = true;
}
else if (c != ‚\r‘) {
// you’ve gotten a character on the current line
currentLineIsBlank = false;
}
}
}
// give the web browser time to receive the data
delay(1);
// close the connection:
client.stop();
Serial.println(„client disconnected“);
}
}
}
Ergebnis:
—– Referenzen
Arduino Code: https://github.com/dewomser/stromzaehler
http://mrfischertechnik.de.tl/DIGITALER-STROMZ-Ae-HLER.htm
http://forum.arduino.cc/index.php?topic=224198.0
https://www.youtube.com/watch?v=w4NTrvZZ6r4
http://blog.elektrowolle.de/2011/07/26/s0-messwerterfassung-von-stromzahlern/
http://www.msxfaq.de/verschiedenes/bastelbude/arduinos0.htm
