BGT24LTR11 class

Available methods

class BGT24LTR11.BGT24LTR11.Radar(serial_, verbose: bool = False)

The class the same functionality as the original Arduino library available on the radar’s website: https://wiki.seeedstudio.com/Grove-Doppler-Radar/

Documentation related to the communication: https://files.seeedstudio.com/wiki/Grove-Doppler-Radar/Grove_DopplerRadar(BGT24LTR11)Radar_module_communication_protocol_v1.1.pdf Documentation of the radar chip: https://www.infineon.com/dgdl/Infineon-AN598_Sense2GOL_Pulse-ApplicationNotes-v01_00-EN.pdf?fileId=5546d4626e651a41016e82b630bc1571

__init__(serial_, verbose: bool = False)

Parameters

• serial – Serial connection object. It must have read, write and is_open methods. The library was created with the PySerial’s object in mind.

• verbose – Flag determining if additional information should be printed to console or not.

get_IQADC() → Optional[dict]

Query IQ components of the signal. The output must be further processed to obtain direction and speed of the target if any target is detected.

get_detection_threshold() → Optional[int]

Query the currently setup detection threshold. Units are unknown, should be related to the power of received signal.

get_mode() → Optional[int]

Query the working mode of the radar. There are two modes:

• 0: Target detection:

  controller returns info about the target’s speed and direction of movement or informs that no target was detected. IQADC signals shouldn’t be accessible in this mode.

• 1: IQADC:

  controller returns digitized IQ components of the signal. From it a user can calculate speed, direction of motion and determine if any target is in the radar’s range at all. In this mode target detection info is unreliable.

get_speed_detection_range() → Optional[dict]

Query the currently setup speed detection range. Radar will be less sensible to targets moving with any speed outside this range.

get_target_info() → Optional[dict]

Query the radar for speed and state of a detected target. Speed is expressed in m/s. State of the target can be one of the following: - 0: no target detected - 1: the target is moving further from the radar - 2: the target is moving towards the radar

get_target_speed()

Speed expressed in m/s.

get_target_state() → Optional[int]

State of the target can be one of the following:

• 0: no target detected

• 1: the target is moving further from the radar

• 2: the target is moving towards the radar

set_detection_threshold(threshold: int = 200) → Optional[int]

Set the detection threshold. Units are unknown, should be related to the power of received signal.

set_mode_IQADC() → Optional[int]

Set the working mode of the radar to the ‘IQADC’.

set_mode_target() → Optional[int]

Set the working mode of the radar to the ‘target detection’.

set_speed_detection_range(min_speed: float = 0.5, max_speed: float = 10)

Specify speed detection range. Radar will be less sensible to targets moving with any speed outside this range.