Access Zone Person Detection for Reliable Workspace Entry
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Solution Overview
Problem
Conventional person detectors in industrial workspaces face challenges in reliably detecting people due to varying external features and clothing, leading to incomplete test data and potential oversight, especially when used in safety-critical environments.
Innovation Solution
A system with an access zone equipped with an access zone detector and additional sensors, utilizing AI-based person detectors and a safety controller to verify position accuracy, ensuring reliable detection by testing each individual before granting access to the workspace.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If test data is used to determine detection thresholds, then detection parameters can be optimized, but the test data may not cover all practical cases due to varying external features and clothing
Solution Approach 1:
The access zone serves as a preliminary testing ground where detection algorithms can validate their performance on actual persons before they enter the workspace. This continuous preliminary testing with real-world data improves adaptability to varying external features and clothing without compromising the accuracy requirements in the main workspace.
Solution Approach 2:
The system continuously evaluates detection results in the access zone and uses this feedback to adjust detection parameters and confidence thresholds. This ongoing feedback loop with real-world data improves the system's adaptability to diverse appearances while maintaining measurement precision through iterative optimization.
Data Source
AI summary
A system for visually monitoring a workspace that is preceded by an access zone configured such that it must first be passed through in order to reach an access point, wherein the access zone has an access zone detector that is similar in function to a workspace detector and is also formed with an imaging sensor for recording digital image files or point clouds and a test evaluation module that is configured to evaluate the image files or point clouds in the same way as provided in the evaluation module of the workspace detector and to output a position indication for a person detected in the access zone.