Acceleration Sensor Reassembly Without AI Model Retraining
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Solution Overview
Problem
Conventional systems for monitoring technical objects using three-axis acceleration sensors require costly retraining of AI models when sensors are replaced or reassembled, leading to inaccurate measurements due to changes in sensor orientation.
Innovation Solution
A method that calculates indicator values from acceleration data using a three-axis replacement sensor, determines a differential vector between the new and original sensor orientations, and applies this vector to an existing mathematical model, allowing for reuse of the model without retraining, even after sensor reassembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of repair
If a three-axis acceleration sensor is disassembled and reassembled with a new orientation, then the sensor can be reused after maintenance or fault, but the model training becomes costly and inaccurate measurements occur due to orientation changes
Solution Approach 1:
The patent changes the parameter representation by introducing a position vector that describes sensor orientation relative to gravitational force. When the sensor is reassembled with a different orientation, the position vector is updated to reflect the new orientation, allowing the model to adapt without retraining while maintaining measurement accuracy.
Solution Approach 2:
The patent performs preliminary determination of the position vector during the sensor assembly process. By establishing the correct orientation parameters before the sensor begins operation, the system avoids the need for costly model retraining and ensures accurate measurements from the start of sensor usage.
2Adaptability or versatility
If the acceleration sensor is reassembled with a different orientation, then the sensor can be reused, but costly retraining of the AI model is required
Solution Approach 1:
Instead of retraining the model when sensor orientation changes, the patent updates the position vector parameter that describes the sensor's orientation relative to gravitational force. This parameter change allows the existing model to continue functioning accurately with the reassembled sensor, eliminating the need for time-consuming retraining.
Solution Approach 2:
The position vector is determined in advance during sensor assembly, before the sensor is put into operation. This preliminary establishment of orientation parameters enables seamless sensor reuse without requiring subsequent model retraining, thus avoiding time loss.
3Ease of manufacture
If the acceleration sensor is assembled in a twisted or bent manner, then the sensor can be installed, but the detected measured values become inaccurate
Solution Approach 1:
The patent introduces a position vector parameter that captures the actual orientation of the sensor relative to gravitational force. Even if the sensor is assembled in a twisted or bent manner, the position vector is updated to reflect this new orientation, allowing the model to compensate and maintain measurement accuracy despite the non-ideal assembly.
Solution Approach 2:
The system uses the position vector as feedback about the sensor's actual orientation. By continuously tracking the relationship between sensor orientation and gravitational force, the system can adjust its measurements to account for twisted or bent assembly conditions, ensuring accuracy regardless of assembly quality.
Data Source
AI summary
Method for monitoring operation of a technical object, wherein a) a first orientation of the first acceleration sensor in the form of a position vector is determined, b) the mathematical model for operation of the object is generated and trained, c) the first acceleration sensor is disassembled and a three-axis replacement acceleration sensor is assembled with a new orientation on the object, d) acceleration values are detected, e) respective indicator values are calculated from the temporal course of the detected acceleration values of the replacement acceleration sensor, f) a replacement vector is determined from the indicator values and a differential vector between the replacement vector and the position vector of the first acceleration sensor determined in step b) is determined, and g) the model during operation of the object for the position vector in the orientation of the replacement vector is applied by taking into account the differential vector.