Force Measuring Device Electromagnetic Field Detection
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Solution Overview
Problem
Force-measuring devices, such as scales and weighing modules, are vulnerable to disruptions from high-frequency electromagnetic fields, which can penetrate through gaps and affect measurement accuracy, leading to inaccurate weighing and potential defects in industrial processes or consumer products.
Innovation Solution
A method and device that incorporate sensors to detect high-frequency electromagnetic fields, comparing the detected parameters with threshold values, triggering actions such as alerting users, repeating measurements, or blocking processes when thresholds are exceeded, and storing data for traceability and calibration purposes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the force measuring device is protected against electromagnetic radiation, then measurement reliability is improved, but device complexity increases due to additional shields and compensation elements
Solution Approach 1:
The sensor detects electromagnetic fields before they can penetrate through the housing and disrupt the load cell measurements. By performing preliminary detection and triggering warnings or blocking measurements in advance, the system prevents harmful effects without requiring complex protective shields or compensation circuits throughout the entire device structure.
2Measurement precision
If sensors are added to detect electromagnetic fields, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The sensor serves multiple functions: it detects electromagnetic field strength, triggers warnings when thresholds are exceeded, and enables the system to block measurements or repeat them. This multi-functionality approach adds measurement precision while minimizing the increase in device complexity by avoiding dedicated separate systems for each function.
3Reliability
If the housing is made more protective against electromagnetic fields, then reliability is improved, but the housing design becomes more complex
Solution Approach 1:
Instead of making the housing itself more complex to block electromagnetic fields, the patent introduces an intermediary sensor that detects the fields and mediates the response by triggering warnings or blocking measurements. This approach maintains a simple housing design while achieving reliable protection through the sensor's detection and control functions.
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
Prevents inaccurate measurements by identifying and mitigating the impact of high-frequency electromagnetic fields, ensuring accurate weighing and reducing the risk of defective products, while providing traceability and allowing for timely calibration.
Implementation Method 1
at least one in the interior of the housing and/or at least one arranged outside the housing serving the detection of high-frequency electromagnetic fields sensor is present
Data Source
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Figure 3
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AI summary
The method involves providing a broad-band sensor (24) either in an interior space of a housing or outside of the housing, where the sensor detects high frequency electromagnetic fields in a frequency range of telecommunication devices. A parameter characterizing the existing electromagnetic field is detected using the sensor, and a detected value of the parameter is compared with a threshold value. A response action of a force-measuring device is triggered, when the detected parameter value exceeds the threshold value.