BeiDou-based Man-Overboard Alarm & Emergency Positioning Search-and-Rescue System

During offshore maritime operations, incidents of personnel overboard occur frequently. Historically, rescuers faced significant challenges in acquiring distress signals from victims, pinpointing their locations, determining exact incident times, or assessing severity levels—critical factors for delivering timely assistance. Managers remained largely at a loss due to limited effective solutions. The absence of robust technological capabilities stands as a primary reason behind the low efficiency and high difficulty level characteristic of current open-sea accident response efforts.This solution leverages real-time cyclic positioning and communication via BeiDou RDSS navigation satellites. By relaying precise coordinates, timestamps, and other vital data from individuals in the water directly to rescue command centers, it dramatically enhances both response speed and search-and-rescue success rates during maritime emergencies.

System Architecture Diagram

Product Introduction

BeiDou Box JD18:
	Dimensions	105 × 65 × 26 mm
	Weight	180 g
	Accuracy	<10 meters
	Battery	5000 mAh (ultra-low temperature cell operational down to -30°C)
	Positioning Systems	BeiDou RDSS / BeiDou RNSS / GPS
	Operating Modes	Tracking Mode / One-Button SOS / One-Button Safety Alert
	Endurance	Normal Operation: Position reported every 5 minutes → Up to 120 hours Water Distress Mode: Position reported every minute → Up to 20 hours

BeiDou Box JD25:
	Dimensions	125 × 62.9 × 28.5 mm
	Weight	200 g
	Accuracy	<10 meters
	Battery	4500 mAh (ambient temperature cell)
	Positioning Systems	BeiDou RDSS / BeiDou RNSS / GPS
	Operating Modes	Tracking Mode / One-Button SOS / One-Button Safety Alert
	Endurance	>46 hours after activation

Key Advantages:

• The terminal features an IP67 protection rating, magnetic charging, and audible alert functionality.
• Within 10 seconds after submersion, the device automatically powers on; upon activating distress mode, audible alerts initiate.
• Post-submersion, it reports position every minute with continuous tracking exceeding 20 hours.
• No manual intervention is required—the BeiDou terminal activates autonomously upon water immersion to begin location reporting.
• Customization options include exterior design and functional configurations, with SDK interfaces and product protocols provided for third-party secondary development.

Local Deployment (Secure communication, customizable on demand, proprietary ownership)

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