Introduction
Protect Workers from Hazards They May Not See
Cranes are essential to construction, industrial operations, and heavy material handling. They lift and transport heavy loads across work areas, enabling projects to progress efficiently.
However, crane operations also create serious safety risks, particularly when workers accidentally walk beneath suspended loads or enter active lifting zones.
In busy construction environments, ground personnel may be focused on their assigned tasks and unaware of crane activity overhead. Noise, obstructed visibility, moving equipment, and constantly changing work areas can make it difficult to recognize dangerous situations.
A worker entering the area beneath an operating crane may be exposed to falling objects, swinging loads, or unexpected load movements.
Although construction sites typically establish exclusion zones, warning signs, and safety supervision procedures, accidental entry can still occur.
ACTi Crane Interference Detection uses AI-powered video analytics to automatically identify workers entering designated hazardous areas beneath crane operations.
With an AI camera mounted underneath the crane, the system continuously monitors the ground area below. When a person enters the configured crane operation zone, the AI camera immediately generates a safety alert, enabling responsible personnel to take timely action.
By providing automated monitoring of high-risk lifting areas, ACTi helps construction companies improve worker safety awareness, strengthen exclusion-zone management, and reduce reliance on continuous manual observation.
Challenges
Workers May Accidentally Walk Beneath Suspended Loads
Construction workers frequently move between workstations, material storage areas, and equipment locations.
When crane operations take place overhead, personnel on the ground may not realize that they are entering an active lifting area.
This creates a dangerous situation, especially when a suspended load is moving or being lowered.
Limited Visibility of Ground Personnel
Crane operators may have restricted visibility of the area beneath the crane or suspended load.
Large structures, construction materials, machinery, and other obstacles can make it difficult to recognize personnel entering hazardous locations.
Dynamic and Changing Work Environments
Construction sites evolve continuously as structures are built, materials are moved, and equipment positions change.
Temporary lifting areas and pedestrian routes may overlap, making exclusion-zone management more challenging.
Dependence on Manual Safety Supervision
Safety supervisors and signal persons play an essential role in managing crane operations.
However, monitoring every potentially hazardous location at all times can be difficult, particularly across large construction sites or during simultaneous operations.
Delayed Safety Intervention
When a worker enters a hazardous lifting area, even a short delay in recognizing the situation can increase risk.
Site personnel need timely information to respond before an unsafe condition escalates.
ACTi Solution
Intelligent Worker Detection Beneath Crane Operations
ACTi Crane Interference Detection provides automated monitoring of designated hazardous areas beneath operating cranes.
An AI camera is mounted underneath the crane structure, facing downward toward the ground-level work area.
This positioning enables the camera to observe personnel moving beneath the crane and monitor the designated lifting exclusion zone.
Using AI-powered people detection, the system automatically identifies workers within the monitored area.
When a person enters the configured hazardous zone, the camera generates an immediate Crane Interference Detection event.
The event can be used to alert crane operators, safety supervisors, or other responsible personnel through supported monitoring and notification functions.
This allows the site team to recognize potentially dangerous situations and take appropriate preventive action.
How the Solution Works
- Monitor the Ground Beneath the Crane
An AI camera installed underneath the crane continuously observes the designated ground-level operating area.
- Identify Workers Entering the Area
AI video analytics automatically detects people appearing within the monitored camera view.
- Detect Entry into the Hazardous Zone
When a worker enters the configured crane exclusion zone, the system identifies a potential safety violation.
- Generate an Immediate Safety Alert
The AI camera generates a detection event, allowing the monitoring system to notify responsible personnel.
- Support Timely Safety Intervention
Crane operators or safety supervisors can respond according to established site procedures, such as warning the worker or temporarily stopping lifting activities when necessary.
A More Effective Monitoring Perspective
Mounting the camera underneath the crane offers an important advantage: the camera observes the ground area associated with the crane's current position rather than relying entirely on a distant, fixed surveillance viewpoint.
For cranes whose camera mounting position moves with the lifting equipment, this can help maintain visibility of the relevant work area as operations progress.
The monitored zone must still be configured to match the actual hazardous area, and camera coverage should be verified for the crane's operating conditions.
Key Benefits
Protect Workers from Overhead Hazards
Automatically identify people entering designated crane operation areas where suspended loads or lifting activities may present a danger.
Enable Immediate Safety Awareness
Generate AI detection events as soon as configured entry conditions are recognized, helping responsible personnel respond promptly.
Improve Exclusion-Zone Management
Reinforce restricted-area procedures through continuous automated monitoring of designated hazardous locations.
Reduce Manual Monitoring Workload
Supplement the work of crane operators, signal persons, and safety supervisors with automated people detection.
Enhance Visibility Beneath the Crane
A camera mounted underneath the crane provides a direct monitoring perspective of the ground area below the lifting equipment.
Strengthen Construction Site Safety
Support safer crane operations by adding an intelligent monitoring layer to existing safety procedures and preventive measures.
Application Scenarios
Tower Crane Lifting Operations
Challenge
Tower cranes transport heavy building materials across large construction sites.
Ground workers may accidentally enter areas beneath suspended loads, especially when crane activity occurs above busy work zones.
ACTi Solution
An AI camera mounted beneath the relevant crane structure monitors the designated ground-level hazardous area.
When a worker enters the configured exclusion zone, the system generates a safety alert.
Benefits
Improved awareness of personnel beneath lifting operations, faster recognition of hazardous entry, and stronger exclusion-zone management.
Mobile Crane Operations
Challenge
Mobile cranes are frequently used for temporary lifting activities.
Because the crane location and lifting area can change between tasks, workers may be unfamiliar with the current restricted zone.
ACTi Solution
An appropriately mounted AI camera monitors the designated ground area associated with the mobile crane's lifting operation.
When a person enters the monitored hazardous zone, an alert is generated.
Benefits
Improved safety monitoring during temporary lifting operations, better awareness of personnel near suspended loads, and support for site-specific safety procedures.
Material Loading and Unloading
Challenge
Heavy construction materials such as steel beams, concrete components, and large equipment are often lifted near areas with frequent pedestrian activity.
Workers may inadvertently walk beneath a load while moving between storage areas and workstations.
ACTi Solution
AI video analytics monitors the designated loading or unloading exclusion zone and identifies personnel entering the hazardous area.
Benefits
Better safety awareness during material transfers, reduced reliance on manual observation, and more timely intervention when workers enter restricted zones.
High-Rise Construction Sites
Challenge
High-rise projects involve simultaneous work at multiple elevations.
Workers at ground level may be unaware of crane movements occurring above them.
ACTi Solution
A downward-facing AI camera monitors the designated ground area beneath the crane operation.
When a worker enters the monitored zone, the system generates an event for safety personnel.
Benefits
Improved coordination between overhead lifting and ground-level activities, greater awareness of hazardous entry, and stronger site safety management.
Industrial Construction and Equipment Installation
Challenge
Industrial construction projects frequently involve lifting heavy machinery, pipes, structural components, and other large equipment.
Personnel performing nearby tasks may accidentally enter areas affected by crane operations.
ACTi Solution
AI cameras monitor designated lifting exclusion zones and generate alerts when workers enter these areas.
Benefits
Improved safety monitoring during equipment installation, better coordination between work teams, and support for established lifting safety procedures.
Ports and Container Terminals
Challenge
Container-handling cranes operate above areas where trucks, equipment, and ground personnel may be present.
Restricted visibility and frequent movement around loading zones can make it difficult to identify personnel beneath lifting equipment.
ACTi Solution
An AI camera mounted beneath a suitable crane structure monitors the designated ground-level operating zone and detects people entering restricted areas.
Benefits
Improved awareness of personnel beneath crane operations, enhanced exclusion-zone monitoring, and more timely safety notifications.
Solution Architecture
From Worker Detection to Safety Response
ACTi Crane Interference Detection integrates AI video surveillance into the crane safety monitoring workflow.
AI Camera Mounted Beneath Crane → Worker Detection in Hazardous Zone → Immediate AI Alert → Safety Personnel / Crane Operator Response
The camera monitors the designated ground area beneath the crane and automatically detects people entering the configured exclusion zone.
When an event occurs, the system generates an alert that can be delivered through supported monitoring and notification functions.
Responsible personnel can review the situation and take appropriate action according to established crane safety procedures.
Depending on the deployment, video and event information may also be available for incident review and safety management.
The solution is intended to supplement existing crane safety systems and procedures, not replace qualified supervision, physical exclusion measures, or certified crane safety controls.
Why ACTi?
Intelligent Safety Monitoring Where It Matters Most
ACTi combines video surveillance and AI-powered people detection to help organizations identify potentially hazardous situations without relying exclusively on manual observation.
Crane-Mounted Monitoring
Positioning an AI camera underneath the crane provides a direct view of the designated ground area beneath the lifting equipment.
Automated Hazard Awareness
AI analytics identifies people entering configured exclusion zones and generates events to support timely intervention.
Practical Construction Applications
The solution can support tower cranes, mobile cranes, material-handling operations, industrial construction, and suitable container-handling environments.
Video-Based Event Verification
Relevant video footage helps safety personnel review detected events and understand the circumstances surrounding potential violations.
Support for Existing Safety Procedures
ACTi Crane Interference Detection adds an automated monitoring layer that reinforces established lifting plans, exclusion zones, worker training, and operational safety practices.
Conclusion
Detect the Danger Before It Becomes an Accident
Crane operations create significant safety risks when workers accidentally enter areas beneath suspended loads or active lifting activities.
Because ground personnel may not recognize hazards overhead, construction companies need effective ways to identify potentially dangerous situations and respond quickly.
ACTi Crane Interference Detection uses an AI camera mounted underneath the crane to continuously monitor designated ground-level hazardous areas.
When a worker enters the configured exclusion zone, the system generates an immediate safety alert, helping crane operators and safety personnel recognize the situation and take preventive action.
By combining automated people detection, crane-mounted monitoring, and timely event notification, ACTi helps organizations strengthen exclusion-zone management and improve safety awareness during crane operations.
