Sps30Sensor¶

class lsst.ts.ess.common.sensor.Sps30Sensor(log: Any)¶

Bases: BaseSensor

Sensirion SPS30 Particulate Matter Sensor.

Perform protocol conversion for a Sensirion SPS30 particulate matter sensor which measures: - Particle size concentrations (PM1.0, PM2.5, PM4.0, PM10) - Particle number concentrations - Typical particle size

Attributes Summary

`DEFAULT_CONCENTRATION`
`DEFAULT_PARTICLE_SIZE`
`DEFAULT_TYPICAL_SIZE`
`END_CHAR`
`GOOD_STATUS`
`START_CHAR`
`TELEMETRY_PATTERN`
`charset`
`delimiter`
`terminator`

Methods Summary

extract_telemetry(line)

Extract particle measurement telemetry from sensor data.

Attributes Documentation

DEFAULT_CONCENTRATION: str = '-1.000'¶

DEFAULT_PARTICLE_SIZE: str = '-1.00'¶

DEFAULT_TYPICAL_SIZE: str = '-1.00'¶

END_CHAR: str = '\x03'¶

GOOD_STATUS: str = '00'¶

START_CHAR: str = '\x02'¶

TELEMETRY_PATTERN = re.compile('^\x02(?P<sensor_name>[^,]+),(?P<timestamp>\\d+\\.\\d+),(?P<size1>\\d+\\.\\d+),(?P<size2>\\d+\\.\\d+),(?P<size3>\\d+\\.\\d+),(?P<size4>\\d+\\.\\d+),(?P<size5>\\d+\\.\\d+),(?P<conc1>\\d+\\.\\d+),(?P<co)¶

charset = 'ASCII'¶

delimiter = ','¶

terminator = '\r\n'¶

Methods Documentation

async extract_telemetry(line: str) → list[float | int | str]¶

Extract particle measurement telemetry from sensor data.

Parameters:

linestr: A line of SPS30 telemetry data.

Returns:

list: A list containing all telemetry fields in the order specified by the XML definition. Invalid values are replaced with np.nan for numeric fields and empty strings for text fields.

Raises:

ValueError: If the line cannot be parsed or checksum validation fails.

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Sps30Sensor¶