PX4-Autopilot/docs/en/msg_docs/DifferentialPressure.md

pageClass

pageClass
is-wide-page

DifferentialPressure (UORB message)

Differential-pressure (airspeed) sensor.

This is populated by airspeed sensor drivers and used by the sensor module to calculate airspeed. The information is published in the SCALED_PRESSURE_n MAVLink messages (along with information from a corresponding SensorBaro instance).

TOPICS: differential_pressure

Fields

Name	Type	Unit [Frame]	Range/Enum	Description
timestamp	uint64	us		Time of publication (since system start)
timestamp_sample	uint64	us		Time of raw data capture
device_id	uint32			Unique device ID for the sensor that does not change between power cycles
differential_pressure_pa	float32	Pa		Differential pressure reading (may be negative)
temperature	float32	degC		Temperature (Invalid: NaN if unknown)
error_count	uint32			Number of errors detected by driver

Source Message

Source file (GitHub)

::: details Click here to see original file

# Differential-pressure (airspeed) sensor
#
# This is populated by airspeed sensor drivers and used by the sensor module to calculate airspeed.
# The information is published in the `SCALED_PRESSURE_n` MAVLink messages (along with information from a corresponding `SensorBaro` instance).

uint64 timestamp         # [us] Time of publication (since system start)
uint64 timestamp_sample  # [us] Time of raw data capture

uint32 device_id                  # [-] Unique device ID for the sensor that does not change between power cycles
float32 differential_pressure_pa  # [Pa] Differential pressure reading (may be negative)
float32 temperature               # [degC] [@invalid NaN if unknown] Temperature
uint32 error_count                # [-] Number of errors detected by driver

:::