Keep-Out Zone Monitoring With Laser and Capacitive Intrusion Detection
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Solution Overview
Problem
Construction sites face challenges in effectively monitoring and managing safety zones to prevent unauthorized access and ensure worker safety, particularly in dynamic environments where hazards are present.
Innovation Solution
A safety monitoring system comprising portable electronic monitoring devices and a central server that detect intrusions, track worker presence, and generate alerts through audio and visual signals, using laser beams, capacitive sensors, and personal devices to notify workers and site managers of potential dangers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional manual monitoring methods are used to track safety zones, then device complexity is reduced, but safety monitoring reliability and response time deteriorate
Solution Approach 1:
The patent replaces manual mechanical monitoring with automated electronic detection systems including laser transmitters, light detectors, and capacitive sensors that continuously monitor protected areas, eliminating the need for human operators while significantly improving monitoring reliability and response time
Solution Approach 2:
The system introduces a central server as an intermediary that receives data from multiple monitoring devices, processes information, and coordinates alarm responses, enabling reliable multi-device coordination without requiring direct complex interconnections between all monitoring components
2Measurement precision
If multiple monitoring devices are deployed to cover all protected areas, then measurement precision and detection capability improve, but device complexity and cost increase
Solution Approach 1:
The patent designs monitoring devices that perform multiple functions: laser transmitters define zone boundaries and detect intrusions, light detectors monitor for intruders, and capacitive sensors detect presence, allowing a single integrated device to replace multiple specialized sensors and reduce overall system complexity
Solution Approach 2:
The system combines multiple detection technologies (laser, light detection, capacitive sensing) into a unified monitoring platform managed by a central server, achieving comprehensive coverage and high detection precision while avoiding the complexity of completely separate monitoring systems
3Loss of time
If real-time notifications are sent to all workers upon intrusion detection, then response time improves, but information loss and alert fatigue increase
Solution Approach 1:
The system sends targeted notifications specifically to workers located in or near the protected area that experienced the intrusion, rather than alerting all workers site-wide, thereby maintaining rapid local response while preserving information relevance and reducing unnecessary alerts to distant personnel
4Measurement precision
If laser beams are used to define protected area boundaries, then detection precision and boundary definition improve, but energy consumption and safety hazards increase
Solution Approach 1:
The system adjusts laser parameters including reducing beam intensity to safe levels, using lower power laser diodes, and implementing pulsed operation modes that maintain sufficient detection precision while minimizing energy consumption and eliminating safety hazards associated with continuous high-power laser emission
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 situational awareness and safety by reducing the likelihood of unauthorized access and hazards, improving response times to emergencies, and dynamically adjusting alerts based on site conditions, thereby reducing the risk of accidents and injuries.
Implementation Method 1
one of the monitoring devices includes a laser transmitter and another of the monitoring devices includes a light detector
Implementation Method 2
one of the monitoring devices includes a laser transmitter and another of the monitoring devices includes a light detector
Implementation Method 3
using laser beams, capacitive sensors, and personal devices to notify workers and site managers of potential dangers
Data Source
AI summary
Various embodiments of a jobsite keep out zone system are provided. The system includes one or more detectors configured to determine when an intruder is within and/or is approaching a protected area. In response to the determination, one or more alarms and/or notifications are generated.