Skip to content

FailsafeFlags (UORB message)

Input flags for the failsafe state machine set by the arming & health checks.

Flags must be named such that false == no failure (e.g. _invalid, _unhealthy, _lost) The flag comments are used as label for the failsafe state machine simulation

TOPICS: failsafe_flags

Fields

参数名类型Unit [Frame]Range/Enum描述
timestampuint64time since system start (microseconds)
mode_req_angular_velocityuint32
mode_req_attitudeuint32
mode_req_local_altuint32
mode_req_local_positionuint32
mode_req_local_position_relaxeduint32
mode_req_global_positionuint32
mode_req_global_position_relaxeduint32
mode_req_missionuint32
mode_req_offboard_signaluint32
mode_req_home_positionuint32
mode_req_wind_and_flight_time_complianceuint32if set, mode cannot be entered if wind or flight time limit exceeded
mode_req_prevent_arminguint32if set, cannot arm while in this mode
mode_req_manual_controluint32
mode_req_otheruint32other requirements, not covered above (for external modes)
angular_velocity_invalidboolAngular velocity invalid
attitude_invalidboolAttitude invalid
local_altitude_invalidboolLocal altitude invalid
local_position_invalidboolLocal position estimate invalid
local_position_invalid_relaxedboolLocal position with reduced accuracy requirements invalid (e.g. flying with optical flow)
local_velocity_invalidboolLocal velocity estimate invalid
global_position_invalidboolGlobal position estimate invalid
global_position_invalid_relaxedboolGlobal position estimate invalid with relaxed accuracy requirements
auto_mission_missingboolNo mission available
offboard_control_signal_lostboolOffboard signal lost
home_position_invalidboolNo home position available
manual_control_signal_lostboolManual control (RC) signal lost
gcs_connection_lostboolGCS connection lost
battery_warninguint8Battery warning level (see BatteryStatus.msg)
battery_low_remaining_timeboolLow battery based on remaining flight time
battery_unhealthyboolBattery unhealthy
geofence_breachedboolGeofence breached (one or multiple)
mission_failureboolMission failure
vtol_fixed_wing_system_failureboolvehicle in fixed-wing system failure failsafe mode (after quad-chute)
wind_limit_exceededboolWind limit exceeded
flight_time_limit_exceededboolMaximum flight time exceeded
position_accuracy_lowboolPosition estimate has dropped below threshold, but is currently still declared valid
navigator_failureboolNavigator failed to execute a mode
fd_critical_failureboolCritical failure (attitude/altitude limit exceeded, or external ATS)
fd_esc_arming_failureboolESC failed to arm
fd_imbalanced_propboolImbalanced propeller detected
fd_motor_failureboolMotor failure

Source Message

Source file (GitHub)

Details

Click here to see original file

c
# Input flags for the failsafe state machine set by the arming & health checks.
#
# Flags must be named such that false == no failure (e.g. _invalid, _unhealthy, _lost)
# The flag comments are used as label for the failsafe state machine simulation

uint64 timestamp				# time since system start (microseconds)

# Per-mode requirements
uint32 mode_req_angular_velocity
uint32 mode_req_attitude
uint32 mode_req_local_alt
uint32 mode_req_local_position
uint32 mode_req_local_position_relaxed
uint32 mode_req_global_position
uint32 mode_req_global_position_relaxed
uint32 mode_req_mission
uint32 mode_req_offboard_signal
uint32 mode_req_home_position
uint32 mode_req_wind_and_flight_time_compliance # if set, mode cannot be entered if wind or flight time limit exceeded
uint32 mode_req_prevent_arming    # if set, cannot arm while in this mode
uint32 mode_req_manual_control
uint32 mode_req_other             # other requirements, not covered above (for external modes)


# Mode requirements
bool angular_velocity_invalid         # Angular velocity invalid
bool attitude_invalid                 # Attitude invalid
bool local_altitude_invalid           # Local altitude invalid
bool local_position_invalid           # Local position estimate invalid
bool local_position_invalid_relaxed   # Local position with reduced accuracy requirements invalid (e.g. flying with optical flow)
bool local_velocity_invalid           # Local velocity estimate invalid
bool global_position_invalid          # Global position estimate invalid
bool global_position_invalid_relaxed  # Global position estimate invalid with relaxed accuracy requirements
bool auto_mission_missing             # No mission available
bool offboard_control_signal_lost     # Offboard signal lost
bool home_position_invalid            # No home position available

# Control links
bool manual_control_signal_lost       # Manual control (RC) signal lost
bool gcs_connection_lost              # GCS connection lost

# Battery
uint8 battery_warning                 # Battery warning level (see BatteryStatus.msg)
bool battery_low_remaining_time       # Low battery based on remaining flight time
bool battery_unhealthy                # Battery unhealthy

# Other
bool geofence_breached        	      # Geofence breached (one or multiple)
bool mission_failure                  # Mission failure
bool vtol_fixed_wing_system_failure   # vehicle in fixed-wing system failure failsafe mode (after quad-chute)
bool wind_limit_exceeded              # Wind limit exceeded
bool flight_time_limit_exceeded       # Maximum flight time exceeded
bool position_accuracy_low            # Position estimate has dropped below threshold, but is currently still declared valid
bool navigator_failure        	      # Navigator failed to execute a mode

# Failure detector
bool fd_critical_failure              # Critical failure (attitude/altitude limit exceeded, or external ATS)
bool fd_esc_arming_failure            # ESC failed to arm
bool fd_imbalanced_prop               # Imbalanced propeller detected
bool fd_motor_failure                 # Motor failure