Accelerometer Mounting Adaptor for Repeatable Axis Alignment
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Solution Overview
Problem
Proper alignment of a triaxial accelerometer's reference axis with a machinery component's measurement axis is challenging due to misalignment issues caused by single mounting stud rotation and unsynchronized thread patterns, leading to inaccurate vibration data collection.
Innovation Solution
An improved alignment system using a low-profile adaptor with a mounting plate and integrated plate stud, where a measurement axis indicator is applied to the mounting plate to align with the accelerometer's reference axis indicator, ensuring consistent alignment during installation and repeated use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single mounting stud is used to attach the accelerometer, then the device complexity is reduced, but the alignment precision deteriorates due to rotation and unsynchronized thread patterns
Solution Approach 1:
The mounting structure is segmented into multiple mounting studs (at least two) instead of using a single stud. This segmentation prevents rotation of the accelerometer during tightening and eliminates thread pattern synchronization issues, thereby improving alignment precision while maintaining reasonable device complexity through modular design
Solution Approach 2:
Alignment indicators (marks or features) are introduced as intermediary elements between the mounting plate and accelerometer housing. These indicators serve as mediators to establish and verify the rotational alignment relationship, enabling precise alignment without requiring complex threading synchronization
2Manufacturing precision
If alignment indicators are added to the mounting plate and accelerometer, then the alignment precision is improved, but the device complexity increases
Solution Approach 1:
Alignment indicators are implemented as visual markers (such as colored marks, painted indicators, or contrasting features) on the mounting plate and accelerometer housing. These visual indicators provide intuitive alignment guidance without adding mechanical complexity, allowing operators to quickly and accurately align the accelerometer by matching the indicators
Solution Approach 2:
The alignment indicators are designed to be self-aligning features that guide the operator during installation. The indicators inherently show the correct rotational position without requiring external measurement tools or complex adjustment procedures, making the alignment process self-service and simplifying the overall system
Data Source
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AI summary
Systems, methods, and devices are provided for aligning a reference axis of an accelerometer with a measurement axis of a machinery component. An adaptor including a mounting plate, a plate stud integrated within the mounting plate, and a screw can be coupled to an accelerometer to ensure proper alignment of the reference axis of the accelerometer with the measurement axis of the machinery component. Aligning the reference axis and the measurement axis using the adaptor ensures that the axial orientation of the vibration data collected by the accelerometer properly corresponds to the intended axis of measurement of the machinery component and thus allows for consistent, repeatable installations of the accelerometer onto the machinery component without introducing alignment errors which can generate erroneous vibration data with respect to one or more axes of measurement.