The Automatic Safe Load Indicator (SLI) for Deck Cranes is a smart lifting safety and monitoring system designed specifically for marine and offshore crane operations. The system continuously monitors load, boom angle, wind speed, and lifting limits to prevent overloading and unsafe lifting conditions on ships and offshore platforms.

This solution improves operational safety, protects crane structure, and ensures compliance with maritime safety requirements and best practices.

Key System Components

1. Tensiometer (Load Sensor)
Installed on the hoist rope or lifting mechanism, the tensiometer measures real-time load being lifted.

Functions:
• Continuous load measurement
• Real-time load feedback to operator
• Overload detection and warning

2. Angle Sensor
Mounted on the crane boom to measure boom angle and calculate working radius.

Functions:
• Determines crane working radius
• Supports load chart calculation
• Ensures accurate safe load monitoring

3. Anemometer (Wind Speed Sensor)
The anemometer measures wind speed, a critical factor for marine crane operations.

Functions:
• Continuous wind monitoring
• High wind speed alarm
• Prevents unsafe lifting during strong winds

4. Limit Switch
Installed near the hoist mechanism to prevent over-hoisting.

Functions:
• Prevents hook block collision with boom tip
• Protects crane and lifting equipment
• Improves operational safety

5. Monitoring Display Unit
Installed in the crane operator cabin, the monitoring displayshows real-time lifting data and safety alerts.

Displays:
• Actual load
• Safe Working Load (SWL)
• Boom angle and working radius
• Wind speed
• Warning and alarm messages

How the System Works
The SLI integrates data from multiple sensors and uses built-in crane load charts to continuously calculate the safe lifting capacity. The operator receives real-time information and alerts to ensure lifting operations remain within safe limits.

When unsafe conditions occur, the system provides:
• Visual alarms
• Audible warnings
• Overload alerts

Key Features
• Real-time load monitoring and overload protection
• Wind speed monitoring for marine safety
• Accurate boom angle and radius calculation
• User-friendly display interface
• Designed for marine and offshore environments
• Durable and reliable system for harsh weather conditions
• Enhances compliance with maritime lifting safety standards

Benefits
• Prevents crane overloading and accidents
• Protects crane structure and cargo
• Improves operator awareness and decision making
• Reduces downtime and equipment damage
• Promotes safe lifting culture onboard vessels