Protective Field Validation With Visual Feedback for Safety Sensors
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Solution Overview
Problem
Existing systems for validating protective fields in industrial environments are cumbersome and require high expertise, making it difficult to ensure compliance with safety standards.
Innovation Solution
A system comprising a safe sensor for monitoring protective fields, a handheld test device for validation, and a visualization device for displaying and confirming the protective field, along with a procedure for validating protection fields, simplifies the commissioning process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a safe sensor monitors a protective field using invisible principles (infrared light or radar waves), then contactless monitoring is achieved, but it becomes difficult to determine where the boundaries of the protective field lie in space
Solution Approach 1:
A handheld test device serves as an intermediary object to make the invisible protective field boundaries visible and detectable. The test device is detected by the safe sensor, and its position is visualized on a display device, allowing operators to see where the protective field boundaries lie in space through the detection and visualization of the test device's position relative to the field
Solution Approach 2:
The display device visualizes the protective field boundaries by showing the position of the test device, effectively using visual color and image changes to represent the invisible electromagnetic field boundaries, making them perceptible to human operators
2Reliability
If protective fields are configured manually or reviewed by safety experts, then safety compliance is ensured, but the commissioning process becomes cumbersome and time-consuming
Solution Approach 1:
The system enables self-service validation by allowing operators to independently validate protective fields using the handheld test device and display device, without requiring safety experts to perform manual configuration reviews. The system automatically detects and visualizes the protective field boundaries, enabling operators to self-verify compliance
Solution Approach 2:
The display device provides real-time feedback by visualizing the position of the test device relative to the protective field boundaries. This immediate feedback allows operators to understand whether the protective field is functioning correctly and whether objects are being detected as intended, streamlining the validation process
3Reliability
If a standard-compliant test rod is used for validation, then safety standards are met, but the validation process requires high expertise and is difficult to perform
Solution Approach 1:
The display device acts as an intermediary that translates the complex validation process into simple visual information. Instead of requiring operators to interpret sensor data or understand technical parameters, the display visually shows the protective field boundaries and test device position, making validation intuitive and easy to perform
Solution Approach 2:
The display device uses visual representation to simplify the validation process. By showing the protective field boundaries and test device position through images or color codes, the system makes it easy for operators to understand whether validation is passing or failing without requiring specialized expertise
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 significantly simplifies and accelerates the commissioning of safety applications, allowing for intuitive validation with less expert knowledge, and provides direct feedback and documentation for compliance.
Implementation Method 1
The sensor uses a principle invisible to humans for contactless monitoring, which evaluates signals such as infrared light or radar waves
Implementation Method 2
The sensor uses a principle invisible to humans for contactless monitoring, which evaluates signals such as infrared light or radar waves
Data Source
Figure 1~2
Figure 3
AI summary
A system is described comprising at least one safety sensor (10) for monitoring at least one protective field (12), a handheld test device (16) for validating the protective field (12), and a visualization device (18) for displaying the protective field (12), wherein the test device (16) has predetermined dimensions corresponding to a desired degree of protection, and the safety sensor (10) is designed to detect an intrusion of the test device (16) into the protective field (12) as a violation of the protective field and to output a safety signal, and wherein the visualization device (18) is at least indirectly connected to the safety sensor (10) and comprises a display (24) and a control and evaluation unit (26) designed to display the protective field (12) on the display (24).The visualization device (18) is connected to the safety sensor (10) in such a way that a protection field violation is transmitted, and the control and evaluation unit (26) is designed to give feedback to a user in the event of a protection field intrusion.