Ring Base Sensor Assembly for Rotor Displacement Measurement
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Solution Overview
Problem
Existing non-contact displacement sensors in industrial rotor measurement systems face assembly errors due to conventional screw-based fixation methods, leading to decreased measurement precision.
Innovation Solution
A measurement device featuring a ring-shaped base with symmetrically disposed sensing elements, each comprising a circumferential and axial groove, and a coil, which are securely positioned within recesses and holes to minimize assembly errors and enhance precision, utilizing a ring-shaped circuit board for electrical connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If displacement sensors are fixed on a base by screws, then the sensors can be assembled and connected, but large assembly error occurs leading to decreased measurement precision
Solution Approach 1:
The base is segmented into multiple recesses that precisely receive and position each sensing element. Each recess acts as an independent positioning feature, dividing the assembly task into multiple precise local fittings rather than one large error-prone screw assembly. This segmentation eliminates cumulative assembly errors and ensures consistent positioning of all sensing elements.
Solution Approach 2:
The recesses in the base serve as intermediary structures between the sensing elements and the base. Instead of directly screwing sensors to the base (which causes assembly errors), the recesses act as precision intermediaries that guide and secure the sensing elements in their exact positions, transferring the mounting function from screws to precisely formed recesses.
2Adaptability or versatility
If multiple sensing elements are used to measure displacement in multiple directions, then measurement capability is improved, but assembly error increases leading to precision degradation
Solution Approach 1:
The base features asymmetrically positioned recesses that are precisely configured for each specific sensing element's location and orientation. Each recess is uniquely shaped and positioned to match its corresponding sensing element, ensuring that even though multiple elements are used for multi-directional measurement, each one is precisely positioned without contributing to cumulative assembly errors.
3Measurement precision
If sensing elements are securely positioned to minimize assembly error, then measurement precision is improved, but device complexity increases
Solution Approach 1:
Multiple functions are merged into the base structure: positioning recesses, securing features, and alignment guides are all integrated into the single base component. The recesses simultaneously perform positioning, securing, and alignment functions, eliminating the need for separate mounting brackets, alignment fixtures, or additional securing mechanisms that would increase device complexity.
Solution Approach 2:
The recesses in the base serve multiple functions: they position the sensing elements precisely, secure them in place, provide alignment during assembly, and protect the sensing elements. This multi-functionality of the recesses achieves secure positioning and high measurement precision without requiring multiple separate components or complex assembly procedures.
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 solution significantly reduces assembly errors and improves measurement precision by ensuring symmetrical and secure placement of sensing elements, allowing for accurate displacement measurement in multiple radial directions while minimizing temperature drift and surface cleanliness impacts.
Implementation Method 1
each sensing element comprises a circumferential groove, an axial groove and a coil
Data Source
AI summary
A measurement device is provided. The measurement device comprises a ring-shaped base and multiple sensing elements. The sensing elements are symmetrically disposed on the ring-shaped base. Each sensing element comprises a circumferential groove, an axial groove and a coil. The axial groove is connected to the circumferential groove. The coil is surrounded within the circumferential groove and extended along the axial groove.