Retrofittable Safety Hook Load Sensing for IP65 Fall Protection
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Solution Overview
Problem
Existing safety systems for construction sites, such as those described in EP2314354, are not standard, expensive to manufacture, and lack rigorous testing, making it unclear if they can withstand standard stresses, and they do not comply with IP65 standards for dust and water resistance.
Innovation Solution
A retrofitable safety system with a load detection sensor, transmitter, processing means, receiver, and warning means that generates notifications when a load is detected or the safety hook is disconnected, using pressure sensors like piezoelectric or quantum tunneling composites, and is designed to be compatible with standard safety equipment without altering its structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If non-standard safety system components are used to enable load detection and monitoring, then safety monitoring capability is improved, but manufacturing cost increases and compliance with IP65 standards becomes difficult
Solution Approach 1:
The patent applies universality by using standard, multi-functional components that serve both safety monitoring and environmental protection requirements. The control unit integrates multiple functions (load detection signal reception, worker status determination, alarm notification) into a single device that can be manufactured to IP65 standards, eliminating the need for separate non-standard components.
Solution Approach 2:
The patent applies homogeneity by ensuring all system components including the control unit, hooks, and lines are made from standard materials and manufactured to the same IP65 protection standard. This uniformity in manufacturing standards across all components reduces overall manufacturing complexity and cost while maintaining reliability.
2Reliability
If non-standard safety system components are used for load detection, then monitoring function is achieved, but compliance with IP65 ingress protection standards is compromised
Solution Approach 1:
The control unit is designed as a universal component that performs multiple functions (receiving load detection signals, determining worker status, generating alarms) while being manufactured to IP65 standards. This single standardized component replaces multiple non-standard components, ensuring both monitoring functionality and protection against dust and water ingress.
3Reliability
If continuous monitoring of workers is implemented to ensure safety equipment usage, then safety compliance is improved, but system complexity and monitoring difficulty increase
Solution Approach 1:
The system applies self-service by enabling automatic monitoring where the control unit autonomously receives load detection signals, determines worker status, and generates alarms without requiring continuous human intervention. The system serves itself by automatically tracking safety compliance throughout the workday, reducing the need for manual monitoring while improving reliability.
Solution Approach 2:
The patent implements feedback through the automatic transmission of load detection signals from hooks to the control unit, which then provides real-time status information and alarm notifications. This continuous feedback loop ensures safety compliance is maintained and monitored automatically, reducing system complexity compared to manual monitoring methods.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system provides cost-effective, reliable monitoring of safety equipment usage, ensuring compliance with safety and ingress protection standards, allowing for remote monitoring of workers' adherence to safety regulations, reducing the risk of falls and injuries, and is compatible with standard construction equipment.
Implementation Method 1
a load detection sensor arranged to generate a load status signal
Implementation Method 2
a transmitter arranged to convey a load status signal
Implementation Method 3
a receiver for receiving the load status signal
Implementation Method 4
warning means arranged to generate notifications
Data Source
AI summary
A safety system includes (a) a rope or lanyard; (b) a safety hook attached to the rope or lanyard; (c) a load detection sensor retrofit to the hook without altering the structural integrity of the hook; and (d) a transmitter arranged to convey a load status signal.