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Advanced Safety Features and Obstacle Avoidance
The D313 incorporates multiple safety systems to prevent accidents and protect your investment. Understanding these features helps you operate more confidently.
Return-to-Home (RTL) System
Automatic Triggers: RTL activates when battery is critically low, signal is lost between drone and controller, or when manually triggered.
RTL Behavior: The drone climbs to a preset altitude (default 60m, adjustable 25-100m), flies directly to the home point, and lands automatically.
Distance Considerations:
- If more than 20m from home: climbs to RTL altitude, then returns
- If less than 20m from home: maintains current altitude if above RTL setting
Manual Override: During active RTL, press the RTL button again or change flight modes to regain manual control.
Obstacle Avoidance System
Forward LIDAR: Detects obstacles up to 12 meters ahead with 30-degree horizontal field of view.
Activation Requirements: Only works in Loiter (GPS) mode. Not available in Sport or Alt Hold modes.
Setting Up Avoidance:
- Switch to Loiter mode (SW2 middle position)
- Access flight safety settings in the app
- Enable "Obstacle Avoidance"
- Set trigger distance (3-20m adjustable)
- Save settings
Avoidance Behavior: When obstacles are detected, the drone automatically stops forward movement or retreats to maintain safe distance.
Downward Altimetry System
LIDAR Ranging: Provides precise altitude measurement below 12 meters, especially useful for low-altitude operations and landing.
Hover Accuracy: Maintains ±0.1m altitude accuracy when LIDAR is active, much more precise than barometric sensors alone.
Landing Assistance: Helps ensure smooth landings by providing exact ground distance measurements.
Position Holding Accuracy
Standard GPS: ±1.5m vertical, ±0.4m horizontal accuracy when GPS is functioning normally.
With Network RTK: Achieves 1cm + 1ppm horizontal and 2cm + 1ppm vertical accuracy - professional surveying grade precision.
Battery Safety Monitoring
Real-time Monitoring: Continuously tracks voltage, current, temperature, and cell balance.
Smart Landing: Automatically initiates landing sequence when battery reaches critically low levels.
Temperature Protection: Monitors battery temperature and reduces performance in extreme conditions to prevent damage.
Low Battery Warnings: Multiple warning stages give you time to land safely before power is exhausted.
These integrated safety systems work together to provide multiple layers of protection, but they don't replace good pilot judgment and situational awareness.
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