Proximity Detection System for Assembly Safety
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Solution Overview
Problem
In assembly environments, maintaining physical distance between humans and machines is challenging due to the limitations of relying on operator awareness and the presence of obscuring objects, leading to reduced efficiency and safety concerns.
Innovation Solution
A system and method using proximity detectors and sensing beacons to dynamically sense and report distances between technicians and machines, providing warnings and halting machine movement when thresholds are breached, while using reflectors to ensure detection accuracy despite obscuring objects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If technicians are restricted from entering zones of operation of automated machines and maintaining social distancing spacing, then safety is ensured, but assembly speed and efficiency are reduced
Solution Approach 1:
The system dynamically adjusts zone accessibility based on real-time machine state. When machines are idle or in safe modes, technicians can enter zones to perform assembly tasks. When machines are operating, the system automatically restricts access. This dynamic approach allows the same zone to serve both safety and productivity needs at different times, eliminating the need for permanent restrictions.
Solution Approach 2:
The system continuously monitors machine operational status and provides real-time feedback to control access to zones. Sensors detect machine state and automatically update proximity warnings and zone accessibility. This closed-loop feedback mechanism ensures safety constraints are actively enforced only when necessary, allowing technicians to work efficiently when machines are safe to approach.
2Device complexity
If operators rely on their own awareness of nearby machines or technicians, then device complexity is reduced, but safety and detection accuracy are compromised
Solution Approach 1:
The system introduces automated sensing beacons and proximity detectors as intermediaries between technicians and machines. These devices continuously monitor positions and detect potential hazards, providing objective detection that supplements or replaces operator awareness. The intermediaries handle the complex detection and warning functions, keeping the overall system manageable while significantly improving detection accuracy.
3Reliability
If technicians maintain social distancing spacing at all times, then disease spread is prevented, but assembly efficiency and machine utilization are reduced
Solution Approach 1:
The system dynamically enforces social distancing requirements based on real-time conditions. When machines are operating or zones are active, the system automatically maintains safe distances between technicians and machines through proximity warnings and access restrictions. When machines are idle or in safe states, technicians can approach closer to perform assembly tasks, maximizing efficiency while maintaining health safety through automated, condition-based distance management.
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
Enhances safety and efficiency by ensuring physical distancing and preventing collisions between technicians and machines, even when large parts obscure the view, thereby improving assembly rates and uptime.
Implementation Method 1
monitoring, by a proximity server, a distance between a first proximity detector and a second proximity detector based on a first signal and a second signal
Implementation Method 2
using reflectors to ensure detection accuracy despite obscuring objects
Data Source
AI summary
A method and a system can be used for reporting proximity between technicians in an assembly environment. The method includes monitoring, by a proximity server, a distance between a first proximity detector and a second proximity detector based on a first signal and a second signal. The first proximity detector is configured to generate the first signal, and the second proximity detector is configured to generate the second signal.