Xsens Dot Sensor State Transition; Power On/Off; Synchronization - Xsens DOT User Manual

3.3 Xsens DOT sensor state transition

State Description
Init/Power OFF -
Advertisement sensor waiting for Bluetooth
connection
Connection Bluetooth connection is established
between sensor and central device

Synchronization

Time-synchronizing among sensors
Measurement Real-time streaming or recording
Power saving Power saving mode

3.3.1 Power ON/OFF

You can power on the sensor either with charger or powered USB cable to plug in the
micro-USB port in the bottom. Sensor will go to advertisement mode after powered on.
Sensor will power off when the power button is pressed over 3 seconds, or received power
off command. Sensor will automatically shut down when battery level is lower than 2% to
prevent battery drain.
3.3.2 Synchronization
Each sensor has its own clock domain. So it is important to have the measurement data
time-synchronized between different sensors, especially in scenarios where multiple
sensors are required simultaneously, e.g. joint angles.
Figure 8: Xsens DOT state transition diagram
Transition
Power ON
BT connect
PS start
BT disconnect
Start sync
PS start
Sync success
Sync fail
Stop measurement
PS end
14
Next state
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Connection
Power saving
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Synchronization
Power saving
Measurement
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Connection
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