c/goertzel/sleepmon.sh

   1 #!/bin/sh
   2 # Simple sleep monitor (Harvie 2012)
   3 #
   4 # You probably have soundcard with one output and input
   5 # Take PIR motion sensor from security system
   6 # Use PIR to switch connection between left channels of output and input (tips of 3.5mm jacks)
   7 # Connect grounds of these two together (maybe you will not need it - depending on your soundcard)
   8 # Power up PIR
   9 # Launch this script
  10 # Use alsamixer and some GUI recorder (like audacity) to tune volume to some usable level
  11 # Place PIR facing to your bed and go sleep
  12 # Wake up
  13 # Enjoy your data
  14
  15
  16 out=/tmp/sleeplog-"$(date +%F_%T)".txt
  17 speaker-test -t sine &>/dev/null &
  18 pid_test=$!
  19 tresh=10
  20 lastdate=0
  21 screen=false
  22 while getopts "s" OPT; do
  23         test "$OPT" == 's' && screen=true;
  24 done
  25 echo "Writing to file: $out";
  26 arecord | ./goertzel -n i -q -l c -t $tresh -d 4 | while read line; do
  27         date="$(date +%s)"
  28         time="$(echo "$line" | cut -f 1)"
  29         level="$(echo "$line" | cut -f 2)"
  30         echo -ne "$time\t$date\t$(date '+%F%t%T')\t"
  31         test "$level" -gt "$tresh" && {
  32                 echo -n "0 Nothing detected...";
  33                 $screen && xset dpms force off || true;
  34         } || {
  35                 echo -n "1 Motion detected!!!!";
  36                 $screen && xset dpms force on;
  37         }
  38         test "$lastdate" != 0 && {
  39                 after=$(( $date - $lastdate))
  40                 echo -ne "\t$level After $after secs";
  41         }
  42         echo;
  43         ./sleepplot.sh "$out" &>/dev/null &
  44         lastdate="$date";
  45 done | tee "$out"
  46 kill $pid_test
  47 echo
  48 echo "Your file: $out"