Ring-Shaped Measurement Device Assembly Precision
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Solution Overview
Problem
Existing non-contact displacement sensors in industrial rotor measurement systems face assembly errors due to traditional screw-based fixation methods, leading to decreased measurement precision.
Innovation Solution
A measurement device featuring a ring-shaped base with multiple sensing units and coils, where the sensing units are disposed on the inner circumferential surface with circumferential and axial grooves, allowing for precise placement and reduced assembly errors, and a ring-shaped circuit board for electrical connection, enhancing measurement precision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If screw-based fixation method is used to mount sensing units, then assembly is simple and fast, but assembly error is large and measurement precision decreases
Solution Approach 1:
A positioning ring with positioning structures is introduced as an intermediary component between the base and sensing units. The positioning ring provides precise locating features that guide the sensing units into correct positions, eliminating the assembly errors inherent in direct screw fixation while maintaining assembly simplicity through the modular positioning mechanism.
Solution Approach 2:
The mounting system is segmented into three distinct components: base, positioning ring, and sensing units. This segmentation allows the positioning ring to independently provide precise positioning functions while the base provides structural support, and sensing units perform measurement, thereby resolving the contradiction between easy assembly and high precision.
2Device complexity
If traditional fixation method is used, then device structure is simple, but sensing unit placement accuracy is poor
Solution Approach 1:
The positioning ring serves as a mediator that adds minimal structural complexity while dramatically improving placement accuracy. It incorporates positioning structures such as positioning holes or grooves that precisely locate the sensing units, providing high manufacturing precision without significantly complicating the overall device structure.
Solution Approach 2:
The positioning ring provides localized precision features only where needed for sensing unit mounting, rather than requiring the entire base structure to be precisely manufactured. This local quality approach improves placement accuracy while keeping the overall device structure relatively simple.
Data Source
AI summary
A measurement device is provided. The measurement device comprises a ring-shaped base and multiple sensing units and a plurality of coils. The sensing units are disposed on and protruded from the inner circumferential surface of the ring-shaped base. Each sensing unit comprises a circumferential groove and an axial groove. The axial groove is connected to the circumferential groove. Each coil is surrounded within the circumferential groove and extended along the axial groove.