Buienalarm in Domoticz

Joost

3 jaar geleden

In dit artikel wordt uitgelegd hoe je gegevens van buienradar in Domoticz kunt krijgen. De alert-sensor (links) geeft de zwaarste neerslag in de komende 2 uren aan. Hierbij wordt onderscheid gemaakt tussen:

Levels:
- Groen: geen neerslag (0 mm)
- Groen: lichte neerslag (0.1 – 1 mm)
- Geel: matige neerslag (1 – 3 mm)
- Oranje: zware neerslag (3 – 10 mm)
- Rood: zware buien (> 10 mm)
De intensiteit van de neerslag in mm/h
Het tijdstip van de zwaarste neerslag

De text-sensor (rechts) geeft aan op welke tijden het regent (ongeacht de intensiteit).

Benodigdheden

Aan te maken virtual devices

1x Alert sensor (naam mag je zelf verzinnen)
1x Text sensor (naam mag je zelf verzinnen)

Aanpassingen script

Regel 163: IDX-nummer van je Alert-sensor
Regel 168 en 170: IDX-nummer van je Text-sensor

Zelf laat ik het script iedere 5 minuten draaien via een container-script, maar je kunt het natuurlijk ook als cronjob laten draaien.

<?php
include("/home/pi/domoticz/scriptsjoost/php/functions.php");
include("/home/pi/domoticz/scriptsjoost/php/settings.php");

$time = date("H:i");
//set the mm of rain you consider it's raining 
$rainthreshold_minutes = "0.1" ; 
$rainthreshold_hours = "0.5" ; 
// according to buienradar there are 5 levels of rain per hour (mm/h)
// 0-2 
// 2-5
// 5-10
// 10-100
// 100+ 
// these are used in the "severity level" 

//	$lat = "51.43" ; 
//	$lon = "6.04" ; 

$json = file_get_contents("https://gpsgadget.buienradar.nl/data/raintext?lat=".$lat."&lon=".$lon) ;
$json = urlencode($json) ; 
$data = explode("%0D%0A",$json) ; 

$thishour=$nexthour=$ever = 0;
$rainbyminutes =  $bool_rainbyminutes = '' ; 
$first_rain = "ik heb geen idee" ; 
$rain_stops = "ik heb geen idee" ; 
$bool_rainnow = $bool_rainthis_hour = $bool_rainnext_hour =  'false' ; 
$rain = array(); 
$maxP = 0;
$maxDT = '';
for($i=0;$i<(count($data)-1);$i++){
	$tmp = urldecode($data[$i]) ;
    $tmp2 = explode("|",$tmp) ;
	$neerslg = neerslag($tmp2[0]); 
	$bool_neerslg = "false" ; 

	//check max rain///
	if ($neerslg > $maxP) {
		$maxP = $neerslg;
		$maxDT = $i*5;
	}

	// check if it will rain now
	if($i==0){
		if($neerslg>=$rainthreshold_minutes){
			$bool_rainnow = 'true' ;
			$bool_neerslg = 'true' ; 
			$first_rain = 'het regent nu.' ; }
	}
	else{
		if($neerslg>=$rainthreshold_minutes){
			$bool_neerslg = 'true' ;  
			if($first_rain == "ik heb geen idee"){
				$first_rain = $i*5; 
			}
		}
	}
	$rain[] = $neerslg ; 
	 
	if($i<12){ //add the items 0 to 11 together to calculate the total rain for this hour
		$thishour+= ($neerslg*10)/10 ; 
		$ever += ($neerslg*10)/10 ;} 
	else{  //same for the rest to calculate next hour
		$nexthour+= ($neerslg*10)/10 ; 
		$ever += ($neerslg*10)/10 ; }
		
		$rainbyminutes .= '"'.($i*5).'" : "'.$neerslg.'",' ;
		$bool_rainbyminutes .= '"'.($i*5).'" : '.$bool_neerslg.',' ;

}

$rainbyminutes = rtrim($rainbyminutes, ",") ; 
$bool_rainbyminutes = rtrim($bool_rainbyminutes, ",") ; 

if($thishour>=$rainthreshold_hours){
	$bool_rainthis_hour = 'true' ; 
}
if($nexthour>=$rainthreshold_hours){
	$bool_rainnext_hour = 'true' ; 
}
//find when it will be dry, first find first occurence of rain
$regen_time = '' ; 
if($ever>0){
	for($i=0;$i<count($rain);$i++){
		$regen = $rain[$i]; 
	// if found stop	
		if($regen>0.0){
			$regen_time = $i ;
			break;  }
	}
	//now find the first occurence after the above one
	for($i=$regen_time;$i<count($rain);$i++){
		$regen_stop = $rain[$i]; 
		if($regen_stop==0.0){
			$rain_stops = $i*5;
			break; }
		else{
			$rain_stops = "het duurt minimaal ".($i*5)." minuten, maar dit kan veranderen." ;}
	}
}

echo '"rainnow" : '.$bool_rainnow.','.PHP_EOL; 
echo '"rainthis_hour" : '.$bool_rainthis_hour.','.PHP_EOL; 
echo '"rainnext_hour" : '.$bool_rainnext_hour.','.PHP_EOL; 
echo '"this_hour" : "'.$thishour.'", '.PHP_EOL; 
echo '"next_hour" : "'.$nexthour.'", '.PHP_EOL; 
echo '"severitylevel" : { '.PHP_EOL; 
echo '"this_hour" : "'.calc_rainlevel($thishour).'", '.PHP_EOL; 
echo '"next_hour" : "'.calc_rainlevel($nexthour).'" '.PHP_EOL; 
echo '"whenstart" : "'.$first_rain.'", '.PHP_EOL; 
echo '"whenstop" : "'.$rain_stops.'" '.PHP_EOL; 

function neerslag($input){
	$tmp = (($input-109)/32)  ; 
	$tmp = pow(10, $tmp)  ; 
	$tmp = round($tmp,1) ;

	if($tmp == "0" ){
	   return "0.0" ; }
	else{
		return $tmp; 
	}
}

function calc_rainlevel($input){
	if(($input>=0 && $input< 2 )){
		return 0 ; }
	elseif(($input>=2 && $input< 5 )) {
		return 1 ; }
	elseif(($input>=5 && $input< 10 )) {
		return 2 ; }
	elseif(($input>=10 && $input<= 100 )) {
		return 3 ; }
	else{
		return 4 ; }				
}

//ALERT//
//zware buien > 10
//zware neerslag 3-10 mm
//matige neerslag 1-3 mm
//lichte neerslag 0.1-1 mm
//geen neerslag 0 mm
			
$maxP = round($maxP, 1);
if ($maxP < 0.1) {
	$alertLevel = 1;
	$alertText = 'Geen neerslag komende 2 uur'; }
elseif ($maxP <= 1) {
	$alertLevel = 1;
	$alertText = 'Lichte neerslag ('.$maxP.' mm/h @ '.date('h:i', strtotime($time) + ($maxDT * 60)).')';}
elseif ($maxP <= 3) {
	$alertLevel = 2;
	$alertText = 'Matige neerslag ('.$maxP.' mm/h @ '.date('h:i', strtotime($time) + ($maxDT * 60)).')';}
elseif ($maxP <= 10) {
	$alertLevel = 3;
	$alertText = 'Zware neerslag ('.$maxP.' mm/h @ '.date('h:i', strtotime($time) + ($maxDT * 60)).')';}
elseif ($maxP > 10) {
	$alertLevel = 4;
	$alertText = 'Zware buien ('.$maxP.' mm/h @ '.date('h:i', strtotime($time) + ($maxDT * 60)).')';
}
UpdateDevice($idx747, $alertLevel, urlencode($alertText));

//TEXT-DEVICE//
if ($maxP < 0.1) {
	$textdevice = $alertText;
	Updatedevice($idx748, 0, urlencode($textdevice));}
else { $textdevice = 'Neerslag begint rond '.date('h:i', strtotime($time) + ($first_rain * 60)).' en duurt ongeveer tot '.date('h:i', strtotime($time) + ($rain_stops * 60));
Updatedevice($idx748, 0, urlencode($textdevice));
}
echo $textdevice;

?>

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162

163

164

165

166

167

168

169

170

171

172

173

174

<?php

include("/home/pi/domoticz/scriptsjoost/php/functions.php");

include("/home/pi/domoticz/scriptsjoost/php/settings.php");

$time = date("H:i");

//set the mm of rain you consider it's raining

$rainthreshold_minutes = "0.1" ;

$rainthreshold_hours = "0.5" ;

// according to buienradar there are 5 levels of rain per hour (mm/h)

// 0-2

// 2-5

// 5-10

// 10-100

// 100+

// these are used in the "severity level"

// $lat = "51.43" ;

// $lon = "6.04" ;

$json = file_get_contents("https://gpsgadget.buienradar.nl/data/raintext?lat=".$lat."&lon=".$lon) ;

$json = urlencode($json) ;

$data = explode("%0D%0A",$json) ;

$thishour=$nexthour=$ever = 0;

$rainbyminutes = $bool_rainbyminutes = '' ;

$first_rain = "ik heb geen idee" ;

$rain_stops = "ik heb geen idee" ;

$bool_rainnow = $bool_rainthis_hour = $bool_rainnext_hour = 'false' ;

$rain = array();

$maxP = 0;

$maxDT = '';

for($i=0;$i<(count($data)-1);$i++){

$tmp = urldecode($data[$i]) ;

$tmp2 = explode("|",$tmp) ;

$neerslg = neerslag($tmp2[0]);

$bool_neerslg = "false" ;

//check max rain///

if ($neerslg > $maxP) {

$maxP = $neerslg;

$maxDT = $i*5;

}

// check if it will rain now

if($i==0){

if($neerslg>=$rainthreshold_minutes){

$bool_rainnow = 'true' ;

$bool_neerslg = 'true' ;

$first_rain = 'het regent nu.' ; }

}

else{

if($neerslg>=$rainthreshold_minutes){

$bool_neerslg = 'true' ;

if($first_rain == "ik heb geen idee"){

$first_rain = $i*5;

}

$rain[] = $neerslg ;

if($i<12){ //add the items 0 to 11 together to calculate the total rain for this hour

$thishour+= ($neerslg*10)/10 ;

$ever += ($neerslg*10)/10 ;}

else{ //same for the rest to calculate next hour

$nexthour+= ($neerslg*10)/10 ;

$ever += ($neerslg*10)/10 ; }

$rainbyminutes .= '"'.($i*5).'" : "'.$neerslg.'",' ;

$bool_rainbyminutes .= '"'.($i*5).'" : '.$bool_neerslg.',' ;

}

$rainbyminutes = rtrim($rainbyminutes, ",") ;

$bool_rainbyminutes = rtrim($bool_rainbyminutes, ",") ;

if($thishour>=$rainthreshold_hours){

$bool_rainthis_hour = 'true' ;

}

if($nexthour>=$rainthreshold_hours){

$bool_rainnext_hour = 'true' ;

}

//find when it will be dry, first find first occurence of rain

$regen_time = '' ;

if($ever>0){

for($i=0;$i<count($rain);$i++){

$regen = $rain[$i];

// if found stop

if($regen>0.0){

$regen_time = $i ;

break; }

}

//now find the first occurence after the above one

for($i=$regen_time;$i<count($rain);$i++){

$regen_stop = $rain[$i];

if($regen_stop==0.0){

$rain_stops = $i*5;

break; }

else{

$rain_stops = "het duurt minimaal ".($i*5)." minuten, maar dit kan veranderen." ;}

}

echo '"rainnow" : '.$bool_rainnow.','.PHP_EOL;

echo '"rainthis_hour" : '.$bool_rainthis_hour.','.PHP_EOL;

echo '"rainnext_hour" : '.$bool_rainnext_hour.','.PHP_EOL;

echo '"this_hour" : "'.$thishour.'", '.PHP_EOL;

echo '"next_hour" : "'.$nexthour.'", '.PHP_EOL;

echo '"severitylevel" : { '.PHP_EOL;

echo '"this_hour" : "'.calc_rainlevel($thishour).'", '.PHP_EOL;

echo '"next_hour" : "'.calc_rainlevel($nexthour).'" '.PHP_EOL;

echo '"whenstart" : "'.$first_rain.'", '.PHP_EOL;

echo '"whenstop" : "'.$rain_stops.'" '.PHP_EOL;

function neerslag($input){

$tmp = (($input-109)/32) ;

$tmp = pow(10, $tmp) ;

$tmp = round($tmp,1) ;

if($tmp == "0" ){

return "0.0" ; }

else{

return $tmp;

}

function calc_rainlevel($input){

if(($input>=0 && $input< 2 )){

return 0 ; }

elseif(($input>=2 && $input< 5 )) {

return 1 ; }

elseif(($input>=5 && $input< 10 )) {

return 2 ; }

elseif(($input>=10 && $input<= 100 )) {

return 3 ; }

else{

return 4 ; }

}

//ALERT//

//zware buien > 10

//zware neerslag 3-10 mm

//matige neerslag 1-3 mm

//lichte neerslag 0.1-1 mm

//geen neerslag 0 mm

$maxP = round($maxP, 1);

if ($maxP < 0.1) {

$alertLevel = 1;

$alertText = 'Geen neerslag komende 2 uur'; }

elseif ($maxP <= 1) {

$alertLevel = 1;

$alertText = 'Lichte neerslag ('.$maxP.' mm/h @ '.date('h:i', strtotime($time) + ($maxDT * 60)).')';}

elseif ($maxP <= 3) {

$alertLevel = 2;

$alertText = 'Matige neerslag ('.$maxP.' mm/h @ '.date('h:i', strtotime($time) + ($maxDT * 60)).')';}

elseif ($maxP <= 10) {

$alertLevel = 3;

$alertText = 'Zware neerslag ('.$maxP.' mm/h @ '.date('h:i', strtotime($time) + ($maxDT * 60)).')';}

elseif ($maxP > 10) {

$alertLevel = 4;

$alertText = 'Zware buien ('.$maxP.' mm/h @ '.date('h:i', strtotime($time) + ($maxDT * 60)).')';

}

UpdateDevice($idx747, $alertLevel, urlencode($alertText));

//TEXT-DEVICE//

if ($maxP < 0.1) {

$textdevice = $alertText;

Updatedevice($idx748, 0, urlencode($textdevice));}

else { $textdevice = 'Neerslag begint rond '.date('h:i', strtotime($time) + ($first_rain * 60)).' en duurt ongeveer tot '.date('h:i', strtotime($time) + ($rain_stops * 60));

Updatedevice($idx748, 0, urlencode($textdevice));

}

echo $textdevice;