#!/bin/bash # WeeWX Ventilador Utility by Miguel H __version__="1.0.0" #### *** MUST CUSTOMIZE *** # ventilador_system=1 # 1 means the system is working. 0 if is not to be used. Before stopping it, make sure the fan is off. debug=0 # 1 means that debug is ongoing. Program echoes certain values sendemail=0 # 1 means that email must be sent # e-mail address to notify email="nobody@example.com" #must be set to valid email if sendemail was set to 1 #################################################### #### *** Recommend that you customize *** # # command to send the order for fan activation. Must be adjusted to your script name and path location ventilador_on="python /usr/local/etc/weewx/Ventilador_Encender" doventiladoroff=1 # 1 means the fan must be swuitched off at the end of the interval. Not necessary if the switch is configured to automatic switch_off # command to send the order for fan de_activation. Must be adjusted to your script name and path location # NOTE: not needed if doventiladoroff is set to 0. ventilador_off="python /usr/local/etc/weewx/Ventilador_Apagar" #### *** Optional customizations # Number of minutes the fan must be working a maximum in an interval # Note: this time must be set even if the switch is setting the fan off automatically. Used by the program to calculate times ventiladoronmin=9 # 10 minutes # Time for fan off after an on interval. Should be a multiple of the execution time (5 or 10 minutes deppending of the trigerring o the script) waitingintervalmin=19 # 20 minutes efective max_number_intervals=5 # Maximum number of intervals in a day # Control targeted to heating and de-humidification (winter) starthour_heating=13 # hour (UTC) to start ventilation for heating if conditions are met. Before this hour is not optimal, mainly in winter. maxtemp_heating=18 # ventillation for heating will not continue when this internal temperature is reached mintemp_heating_diff=3 # temperature difference required to start heating min_humidity_diff=5 # fan if not started if the external humidity is not lower than internal at least in this value # Control targeted to cooling (summer) starthour_cooling=4 # hour (UTC)to start ventilation for cooling if conditions are met. Do not forguet summer time (effective UTC+2) # Before this hour is not optimal, mainly in summer. mintemp_cooling=25 # ventillation for cooling will not continue when the internal temperature is below this point mintemp_cooling_diff=3 # temperature difference required to start cooling max_humidity_ext=65 # ventillation is not started if the humidity is above this value # Main weewx log file weewx_main_log=/var/log/weewx.log # Supplemental log. Used to store the data needed to control the status and intervals weewx_suppl_log=/var/log/weewx_ventilador.log # File with the data generated by weewx reports following the specific skin (similar to the one for meteoclimatic.htm) # Must be adjusted to the weewx installation paths. Typically /var/www/html/weewx/ weewx_ventilador_file=/var/www/html/weewx/ventilador.htm # ### *** End of user customizations ################################## ventiladoronsecs=$((ventiladoronmin * 60)) # converting minutes to seconds waitingintervalsec=$((waitingintervalmin * 60)) ### check if the program is off if [ "$ventilador_system" -eq 0 ] ; then # progran is off. Used to stop the whole progran exit fi ### Check to see that email address was in fact customized if it must be used. ; if [ "$sendemail" -eq 1 ] ; then if [ "$email" = "nobody@example.com" ] ; then echo "ERROR: WeeWX Watchdog -- email still set to fake address. Edit the setting in the script." exit 200 fi ### Check to see that mailx utilty is found mailx_check=$(which mailx 2>/dev/null) if [ -z "$mailx_check" ] ; then echo "ERROR: WeeWX Watchdog -- mailx utility not found; please install it (see readme.txt)." exit 255 fi fi ############################# # Fan Status Detection # set -xv # command to debug and trace execution # Get the current timestamp since the epoc and the day currstamp="$(date +%s)" currdaystamp="$(date +%y%m%d)" currhourstamp="$(date +%H)" # Normalize the log messages the current time for this time through the checks msgstamp="$(date +%Y/%m/%d' '%H:%M:%S)" # Get the data and the timestamp of the last time ventilador logged a record start_logstamp="$(sed -n 's/.*WeeWX: Start VENTILADOR event timestamp: (\([0-9]*\)) .*/\1/p' ${weewx_suppl_log}.1 ${weewx_suppl_log} 2>/dev/null | tail -1)" stop_logstamp="$(sed -n 's/.*WeeWX: Stop VENTILADOR event timestamp: (\([0-9]*\)) .*/\1/p' ${weewx_suppl_log}.1 ${weewx_suppl_log} 2>/dev/null | tail -1)" day_logstamp="$(sed -n 's/.*Day timestamp: (\([0-9]*\)) .*/\1/p' ${weewx_suppl_log}.1 ${weewx_suppl_log} 2>/dev/null | tail -1)" interv_logstamp="$(sed -n 's/.*Interval: (\([0-9]*\)) .*/\1/p' ${weewx_suppl_log}.1 ${weewx_suppl_log} 2>/dev/null | tail -1)" if [ -z $interv_logstamp ] ; then # no data for start in files interv_logstamp=0 start_logstamp=0 day_logstamp="200101" #fake date when no data in files fi if [ -z $stop_logstamp ] ; then # no data for stop in files stop_logstamp=0 # set fake value fi # printinf values for testing purposes if [ $debug -eq 1 ] ; then # if debug is ongoing echo "start.............$start_logstamp" echo "stop..............$stop_logstamp" echo "day_logstamp..... $day_logstamp" echo "Interval logstamp.. $interv_logstamp" fi # Verify that data in log are from today otherwise set them to default values if [ $day_logstamp -lt $currdaystamp ] ; then start_logstamp=0 stop_logstamp=0 interv_logstamp=0 # assumption: ventilador is not running at the end of the day fi # ventilador is in ON or in guard period if [ $start_logstamp -gt $stop_logstamp ] ; then # ventilador is on if [ $((start_logstamp + ventiladoronsecs)) -lt $currstamp ] ; then # end of on period # log stop in all cases, even if the fan sets off authomatically echo "$msgstamp WeeWX: Stop VENTILADOR event timestamp: ($currstamp) " >>$weewx_suppl_log if [ $doventiladoroff -eq 1 ] ; then # stop ventilador stopmsg=`$ventilador_off 2>&1` fi fi exit # No more actins needed if it was on else if [ $((stop_logstamp + waitingintervalsec)) -gt $currstamp ] ; then # guard period ongoing exit fi fi # check if maximum number of intervals already passed if [ $interv_logstamp -ge $max_number_intervals ] ; then exit # no more checks fi # Read the data for temperature and humidity from file sed 's/\,.*$//g' ${weewx_ventilador_file} 1>${weewx_ventilador_file}.1 #removing comma and tailing digit(s) Temperature_external="$(sed -n 's/.*ETMP=*\([0-9]*\)/\1/p' ${weewx_ventilador_file}.1 2>/dev/null )" Temperature_internal="$(sed -n 's/.*ITMP=*\([0-9]*\)/\1/p' ${weewx_ventilador_file}.1 2>/dev/null )" Humidity_external="$(sed -n 's/.*EHUM=*\([0-9]*\)/\1/p' ${weewx_ventilador_file}.1 2>/dev/null )" Humidity_internal="$(sed -n 's/.*IHUM=*\([0-9]*\)/\1/p' ${weewx_ventilador_file}.1 2>/dev/null )" date_infile="$(sed -n 's/.*UPD=*\([0-9]*\)/\1/p' ${weewx_ventilador_file}.1 2>/dev/null )" Date_infile=${date_infile:3:2}"/"${date_infile:0:2}"/"${date_infile:6:4} #converting the format of the date Date_Infile=$(date --date="$Date_infile" +%s) # converting the date in file to epoch Date_Stamp=$(date --date=$"(date +%d/%m/%Y)" +%s) # converting to today date to epoch Diff_temp=$(($Temperature_external - $Temperature_internal)) Diff_hum=$(($Humidity_internal - $Humidity_external)) info_text="T.ext.$Temperature_external T.int.$Temperature_internal H.ext.$Humidity_external H.int.$Humidity_internal.." # set -xv #start debugging # set +xv #stop debugging # printing values for testing purposes if [ $debug -eq 1 ] ; then # if debug is ongoing echo "$info_text" echo "Temperatura externa... $Temperature_external" echo "Temperatura interna... $Temperature_internal" echo "Humedad externa........$Humidity_external" echo "Humedad interna....... $Humidity_internal" echo "Date in file...........$Date_infile... $Date_Infile" fi # check conditions for temperature versus time # check that temperature data are from today if [ $Date_Infile -ne $Date_Stamp ] ; then exit fi # check heating if [ $Temperature_internal -lt $maxtemp_heating ] ; then # heating conditions (winter or cold) if [ $currhourstamp -ge $starthour_heating ] ; then # correct hour if [ $((Temperature_internal + mintemp_heating_diff)) -le $Temperature_external ] ; then # temperature conditions met if [ $((Humidity_internal - Humidity_external)) -ge $min_humidity_diff ] ; then # humidity conditions met # start order interv_logstamp=$((interv_logstamp+1)) # incrementing interval value startmsg=`$ventilador_on 2>&1` # execute script to set the fan on logtext="$msgstamp WeeWX: Start VENTILADOR event timestamp: ($currstamp) Day timestamp: ($currdaystamp) Interval: ($interv_logstamp) $info_text " echo "$logtext" >>$weewx_suppl_log # log the start in the ventilador log if [ $interv_logstamp -eq 1 ] ; then # Log the message to the main Weewx log the first time the fan is started in a day echo "$msgstamp WeeWX: Start VENTILADOR first time today. Timestamp: ($currstamp)" >>$weewx_main_log if [ $sendemail -eq 1 ] ; then # send email for first start in the day echo "$logtext" | mailx -s "Weewx VENTILADOR encendido $msgstamp" $email fi fi fi fi fi exit #no mor actions needed fi if [ $Temperature_internal -ge $mintemp_cooling ] ; then # heating conditions (summer) if [ $currhourstamp -ge $starthour_cooling ] ; then # correct hour if [ $((Temperature_internal - mintemp_cooling_diff)) -ge $Temperature_external ] ; then # temperature conditions met if [ $Humidity_external -lt $max_humidity_ext ] ; then # humidity conditions met #orden de encendido interv_logstamp=$((interv_logstamp+1)) startmsg=`$ventilador_on 2>&1` #order to start fan logtext="$msgstamp WeeWX: Start VENTILADOR event timestamp: ($currstamp) Day timestamp: ($currdaystamp) Interval: ($interv_logstamp) $info_text " echo "$logtext" >> $weewx_suppl_log #info added to ventilador log if [ $interv_logstamp -eq 1 ] ; then # Log the message to the main Weewx log the first time in a day the fan is started echo "$msgstamp WeeWX: Start VENTILADOR first time today. Timestamp: ($currstamp)" >>$weewx_main_log if [ $sendemail -eq 1 ] ; then #send email for first start in the day echo "$logtext" | mailx -s "Weewx VENTILADOR encendido $msgstamp" $email fi fi fi fi fi fi # set +xv exit