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* fetch temperature from wunderground

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* fix errors in pvoutput value correction
This commit is contained in:
Rik Veenboer
2012-12-01 13:12:23 +01:00
parent eb9184170a
commit 25758dc18f
3 changed files with 110 additions and 11 deletions
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47
opt/inverter/pvoutput.php
View File

@@ -1,24 +1,34 @@
#!/usr/bin/php
<?php
require_once 'functions.php';
require_once 'wunderground.php';
define('STATION', 'INOORDHO4');
define('RRD_FILE', 'data/inverter_%s_today.rrd');
define('RRD_FETCH', 'rrdtool fetch %s AVERAGE -r %d -s %d -e %d');
define('PVOUTPUT_URL', 'http://pvoutput.org/service/r1/addstatus.jsp');
define('TODAY_FILE', 'data/today_%s.csv');
define('FIELD', 'PAC');
define('RESOLUTION', 5);
define('MARGIN', 0.1);
define('MARGIN_ENERGY', 0.1);
define('MARGIN_TEMPERATURE', 0.2);
$aSystems = array(
'1204DQ0116' => array('16e7a916d69656e354d00461a4da1d2e40cfa4f1', '12419')
);
/* Fake command line for debugging */
//$argv = array(null, 1.5, 1234, 230, '1204DQ0116');
/* Fetch command line arguments */
$fToday = floatval($argv[1]);
$fPower = floatval($argv[2]);
$fVoltage = floatval($argv[3]);
$sSerial = $argv[4];
/* Fetch temperature */
$aData = wunderground('conditions', sprintf('pws:%s', STATION));
$fTemperature = isset($aData['current_observation']['temp_c']) ? $aData['current_observation']['temp_c'] : null;
/* Fetch twilight data */
$iDay = date('z');
$aTwilight = getTwilight(date('Y'), $iDay);
@@ -27,10 +37,10 @@ $aTwilight = getTwilight(date('Y'), $iDay);
$sTodayFile = sprintf(TODAY_FILE, $sSerial);
$aToday = array();
if (file_exists($sTodayFile)) {
$aToday = explode(',', file_get_contents($sTodayFile));
$aToday = explode(',', file_get_contents($sTodayFile));
}
if (count($aToday) != 3 || $aToday[0] != $iDay) {
$aToday = array($iDay, 0, strtotime($aTwilight[1]));
$aToday = array($iDay, 0, strtotime($aTwilight[1]), null);
}
$iLast = $aToday[2];
@@ -52,7 +62,7 @@ if (isset($aFields[FIELD])) {
$aRow = explode(' ', $sRow);
$iDate = substr($aRow[0], 0, -1);
$iInterval = $bFirst ? (($bFirst = false) || RESOLUTION) : $iDate - $iLast;
if (($fValue = floatval($aRow[$iField])) > 0) {
if (($fValue = floatval($aRow[$iField])) > 0) {
$fEnergy += $iInterval * $fValue;
}
$iLast = $iDate;
@@ -62,10 +72,30 @@ if (isset($aFields[FIELD])) {
/* Store today data */
$aToday[1] += $fEnergy / 1000 / 3600;
$aToday[2] = $iTime;
$aToday[3] = $fTemperature;
file_put_contents($sTodayFile, implode(',', $aToday));
/* Correct today data */
$fToday = $aToday[1] > ((1 + MARGIN) * $fEnergy) ? $fEnergy : $aToday[1];
$fToday = $fToday > ((1 + MARGIN_ENERGY) * $aToday[1]) ? $aToday[1] : $fToday;
/* Construct PVOutput data */
$aData = array(
'd' => date('Ymd', $iTime),
't' => date('H:i', $iTime),
'v1' => 1000 * $fToday, // Wh
'v2' => $fPower,
'v6' => $fVoltage);
/* Add (corrected) temperature when available */
if (isset($fTemperature)) {
if (isset($aToday[3])) {
$fTemperature = abs($aToday[3] - $fTemperature) > (MARGIN_TEMPERATURE * $aToday[3]) ? $aToday[3] : $fTemperature;
}
$aData['v5'] = $fTemperature; // ignore potential flaws in first temperature of the day
}
/* Store debug data */
file_put_contents('pvoutput.debug', array(json_encode($argv), json_encode($aData)) . "\n", FILE_APPEND);
/* Send data to PVOutput */
if (isset($aSystems[$sSerial])) {
@@ -75,12 +105,7 @@ if (isset($aSystems[$sSerial])) {
CURLOPT_HTTPHEADER => array(
sprintf('X-Pvoutput-Apikey: %s', $aSystems[$sSerial][0]),
sprintf('X-Pvoutput-SystemId: %s', $aSystems[$sSerial][1])),
CURLOPT_POSTFIELDS => http_build_query(array(
'd' => date('Ymd', $iTime),
't' => date('H:i', $iTime),
'v1' => 1000 * $fToday, // Wh
'v2' => $fPower,
'v6' => $fVoltage)),
CURLOPT_POSTFIELDS => http_build_query($aData),
CURLOPT_RETURNTRANSFER => true));
$sResult = curl_exec($rCurl);
}

7
opt/inverter/weather.php Normal file
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@@ -0,0 +1,7 @@
#!/usr/bin/php
<?php
require_once 'wunderground.php';
define('STATION', 'INOORDHO4');
$aData = wunderground('conditions', sprintf('pws:%s', STATION));
echo $fTemperature = isset($aData['current_observation']['temp_c']) ? $aData['current_observation']['temp_c'] : null;

67
opt/inverter/wunderground.php Normal file
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@@ -0,0 +1,67 @@
<?php
define('KEY', '2556854ea765c351');
define('LIMIT_MINUTE', 10);
define('LIMIT_DAY', 500);
define('LIMIT_FILE', 'wunderground.json');
function wunderground($sService, $sQuery, $bDebug = false) {
/* Get current date values */
$iMinute = date('i');
$iDay = date('z');
if (file_exists(LIMIT_FILE)) {
/* Read number of calls used */
$sJSON = file_get_contents(LIMIT_FILE);
$aJSON = json_decode($sJSON, true);
$aCount = array(
'minute' => $iMinute != $aJSON['minute'][0] ? 0 : $aJSON['minute'][1],
'day' => $iDay != $aJSON['day'][0] ? 0 : $aJSON['day'][1]);
} else {
/* Initialise to zero */
$aCount = array(
'minute' => 0,
'day' => 0);
}
/* Check call limits */
$iWait = 0;
if ($aCount['minute'] >= LIMIT_MINUTE) {
$iWait = 60 - date('s');
if ($bDebug === true) {
printf("Minute limit (%d) reached, wait %d seconds\n", LIMIT_MINUTE, $iWait);
}
$aCount['minute'] = 0;
} else if ($aCount['day'] >= LIMIT_DAY) {
$iWait = strtotime('00:00 + 1 day') - time();
if ($bDebug === true) {
printf("Daily limit (%d) reached, wait %d seconds\n", LIMIT_DAY, $iWait);
}
$aCount['day'] = 0;
}
/* Prevent from exceeding call limits */
if ($iWait > 0) {
//die("Try again later!\n");
return null;
}
/* Update call counts */
++$aCount['minute'];
++$aCount['day'];
/* Report number of calls used */
if ($bDebug === true) {
printf("Used %d/%d minutely and %d/%d daily calls\n", $aCount['minute'], LIMIT_MINUTE, $aCount['day'], LIMIT_DAY);
}
/* Write number of calls used to file */
$aJSON = array(
'minute' => array($iMinute, $aCount['minute']),
'day' => array($iDay, $aCount['day']));
file_put_contents(LIMIT_FILE, json_encode($aJSON));
/* Perform actual call */
$sUrl = sprintf('http://api.wunderground.com/api/%s/%s/q/%s.json', KEY, $sService, $sQuery);
$sJSON = file_get_contents($sUrl);
return json_decode($sJSON, true);
}