Smart Snap Lanyard Interlock for Aerial Lift Safety
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Solution Overview
Problem
Existing fall prevention systems for aerial lift machinery do not adequately address the risk of suspension trauma and fail to ensure proper attachment of safety lanyards to the operator's harness, leading to hazardous situations during falls from elevated platforms.
Innovation Solution
A smart snap safety lanyard system with an interlock controller that verifies the attachment of the safety lanyard to the harness, records usage data, and includes a load sensor to transmit emergency warnings and remote control functionality to assist operators in safely maneuvering the aerial lift after a fall.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the safety lanyard detection sensor is located on the lift anchor point to detect lanyard attachment, then the system can inhibit lift operation when lanyard is not attached, but the system can be defeated by leaving the lanyard attached to the anchor point at all times, allowing operation without proper attachment to the harness
Solution Approach 1:
The detection system is segmented into two separate sensors: one sensor on the anchor point detects lanyard attachment to the anchor, while a second sensor on the harness detects attachment to the operator's body. Both detection points must confirm proper attachment for lift operation to be permitted, preventing the defeat mechanism of leaving the lanyard on the anchor point alone.
2Reliability
If the load sensor is activated to transmit emergency warning signal when operator falls, then immediate alert to emergency personnel is provided, but the system complexity and cost increase
Solution Approach 1:
The load sensor functionality is merged with the existing safety lanyard system. The same lanyard that provides fall protection also contains or is integrated with a load sensor that detects abnormal loading conditions indicating a fall. This integration allows emergency detection without adding separate complex systems.
Solution Approach 2:
The safety lanyard serves multiple functions: it provides mechanical fall protection, enables detection of proper attachment through sensors, and contains load sensing capability to detect falls and trigger emergency warnings. This multi-functionality reduces overall system complexity while improving safety.
3Reliability
If the smart snap system with interlock controller is implemented to verify proper lanyard attachment, then the risk of improper attachment is reduced, but the device complexity and initial cost increase
Solution Approach 1:
The interlock controller automatically verifies attachment status by receiving signals from sensors at the anchor point and harness. The system self-monitors and self-locks, preventing lift operation unless both sensors confirm proper attachment. This automated self-service approach reduces reliance on operator memory and manual checks.
Solution Approach 2:
The interlock controller receives real-time feedback from the attachment sensors and automatically adjusts system state - permitting operation when properly attached and inhibiting operation when improperly attached. This closed-loop feedback ensures continuous verification of safety conditions.
Data Source
AI summary
A fall arresting/prevention safety protection device for aerial lifts that delivers notifications and warnings to individuals who are subject to accidental falls or other safety hazards when performing construction or the like or when operating elevating construction machinery such as aerial lift work platforms, bucket trucks and similar type elevating work platforms. The invention further provides a load sensor that when activated transmits an emergency signal to operators, supervisors and emergency personnel. The present invention further provides a remote control to access and control movement of the aerial lift through a wireless transmission in the event the lift operator falls out of or is ejected from the bucket or work platform.