use strict; 
use warnings; 
use Data::Dumper;

my %store; # put the results in here
while (<DATA>) {
    while(m< (\w+) = "((?:[^"\\]|\\.)+)" >gx)
    {
        # $store{$1} ||= []; ## useless: see hdb's answer below
        push @{ $store{$1} }, $2; # or push @array, {$. => $2} if you want to keep track of the line of definition
    }
}

print Dumper \%store; # Look what we got

__DATA__
dvgqu="0"vgrq="0"w="0"devce="db"elped_me="0"r="0"rmb="0"rrqm="0"vcm="0"ul="0"w="0"wmb="0"wrqm="0"
dvgqu="0.00"vgrq="58.91"w="0.09"devce="d"elped_me="1"r="0.00"rmb="0.00"rrqm="0.00"vcm="0.09"ul="0.05"w="5.50"wmb="324.00"wrqm="35.00"