[MSDK 5.10.0] Battery charge threshold and Smart Return to Home
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Hi!
I have a question regarding the Smart Return to Home functionality when the battery is low. As far as I understand, it tries to estimate whether the remaining charge is sufficient to reach the home point.
However, one of our customers has requested a feature to adjust the battery charge threshold that triggers RTH. He is concerned that Smart Return to Home may make an incorrect estimation in windy conditions.
I found KeySeriousLowBatteryWarningThreshold, which has the following description:
"If the battery power is lower than the threshold, the aircraft will go back to home."
How does this setting interact with Smart Return to Home? Will both mechanisms work simultaneously, triggering RTH when the highest threshold is reached, or is the logic behind them different?
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Sorry for keeping you waiting. Due to the current Spring Festival holiday, the relevant engineers are on vacation, and your question may not receive a timely response. We have recorded your question and will contact you as soon as the engineer's vacation ends. We deeply apologize for any inconvenience caused~ -
Dear developers, Hello, thank you for contacting DJI Innovation. Unfortunately, msdk does not currently support getting RTK signal levels. The MSDK does not provide an auxiliary method for directly calculating the height of the ellipsoid. You need to do your own calculations. The real 3D position of the RTK module obtained through RTKLocationInfoListener is the 3D position of the RTK module on the aircraft, but not the location of the base station. Yes, there are 11 satellites connected. The aircraft itself and the RTK module may indeed have different GPS and GNSS values. KeyGPSSatelliteCount can be used to get the GPS signal level and number of satellites for the aircraft, while the value of RTK can be obtained from the SatelliteInfo object. For pilot, you can contact the mailbox: support@dji.com, the technical support will communicate with you. Thank you for your understanding and support, I wish you a happy life! Best Regards, DJI DJI innovation SDK technical support -
Dear developers, Hello, thank you for contacting DJI Innovation. Sorry, you can ignore the contents of the previous email. The smart homing function can be triggered by the pilot via an app or remote control. When the aircraft's battery power drops below a certain threshold (typically 25% to 50%), the aircraft automatically initiates intelligent homing. At this point, the aircraft will try to estimate whether the remaining power is enough to return to the starting point, and begin to return after the countdown ends. The low power return function is part of the smart return function, and the smart return and low power return work together: When the battery power is lower than the return threshold, the aircraft will trigger the intelligent return and try to return to the starting point. When the battery power continues to decline and is below the threshold of severe low power, the aircraft will trigger severe low power return and land on the spot immediately. Therefore, the two mechanisms are logically continuous, intelligent return will try to return to the starting point in the case of high power, while severely low power return is to ensure the safe landing of the aircraft when the power is very low. You can adjust triggered by setting KeyLowBatteryWarningThreshold and KeySeriousLowBatteryWarningThreshold returning and local land battery threshold, to adapt to the different flight conditions and requirements. Thank you for your understanding and support, I wish you a happy life! Best Regards, DJI DJI innovation SDK technical support
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