NAME

RPi::PIGPIO::Device::DSM501A - Read dust particle concentraction from a DSM501A sensor

DESCRIPTION

Uses the pigpiod to read dust particle concentraction from a DSM501A sensor

The minimum recomended sampling time is 30 seconds.

Dust particles concentration is extrapolated for a cubic meter of air.

Sensor specs can be found here : https://www.elektronik.ropla.eu/pdf/stock/smy/dsm501.pdf

Acceptable room air concentration for particles ≥1 µm is 8,320,000 / cubic meter. More info on dust levels for different environments here : https://en.wikipedia.org/wiki/Cleanroom#ISO_14644-1_and_ISO_14698

SYNOPSIS

    use RPi::PIGPIO;
    use RPi::PIGPIO::Device::DSM501A;

    my $pi = RPi::PIGPIO->connect('192.168.1.10');

    my $dust_sensor = RPi::PIGPIO::Device::DSM501A->new($pi,4);

    my $pcs = $dust_sensor->sample(30); # Sample the air for 30 seconds and report

NOTES

Please be aware that c<sample()> method will block until the sample time expires.

METHODS

new

Create a new object

Usage:

    my $dust_sensor = RPi::PIGPIO::Device::DSM501A->new($pi,$gpio);

Arguments:

• $pi - an instance of RPi::PIGPIO

• $gpio - GPIO number to which the sensor is connected

sample

Sample the sensor for the given time and return the measured average concentration

Arguments:

• $sample_time - time in seconds for which to sample the device