Rotary Encoder Measurement System With Intermediary Connector
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Solution Overview
Problem
Existing measurement systems for large mechanical components face accuracy issues due to dimensional changes in calibrated wheels, slippage, surface irregularities, and environmental conditions that can damage the rotary encoder or the component being measured.
Innovation Solution
A measurement system that includes a rotary encoder separated from the object by a predetermined distance, with a rotatable wheel connected to the encoder and a connector that engages with the object to move in sync, allowing for precise dimension measurement without direct contact and minimizing exposure to damaging conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the rotary encoder is placed directly adjacent to the object being measured, then measurement precision is improved, but the encoder is exposed to damaging environmental conditions and may score the object
Solution Approach 1:
The patent introduces a connector as an intermediary element that transfers rotational motion from the object to the rotary encoder without direct contact. The connector includes a rotatable wheel that engages with the object's surface features (slots, keyways, or external features) and transmits rotation through a connector body to the rotary encoder, which remains separated from the object by a predetermined distance. This intermediary mechanism allows accurate measurement while protecting both the encoder and object from damage.
2Strength
If the calibrated wheel is made of metal for durability, then strength is improved, but dimensional changes due to heat, erosion, or scoring reduce measurement accuracy
Solution Approach 1:
The patent replaces the traditional metal calibrated wheel with a connector made of non-metallic, dimensionally stable material such as ceramic or composite. This substitution maintains the mechanical function of transferring rotation while eliminating the problems of thermal expansion, erosion, and scoring that affect metal wheels. The connector's dimensional stability ensures consistent measurement accuracy over time and across varying environmental conditions.
3Object-affected harmful factors
If the rotary encoder is separated from the object by a predetermined distance, then protection from environmental damage is improved, but measurement precision may be reduced
Solution Approach 1:
The connector serves as a mechanical intermediary that bridges the gap between the separated rotary encoder and the object. The rotatable wheel portion of the connector directly engages with the object's surface features to capture its rotation, while the connector body transmits this rotation to the encoder through a protected transmission mechanism (such as a belt, chain, or gear system). This allows the encoder to remain at a safe distance from environmental hazards while the connector maintains precise mechanical coupling for accurate measurement.
Data Source
AI summary
A measurement system for measuring a dimension of an object includes a rotary encoder and a rotatable wheel connected to the rotary encoder. A first transfer roller is separated from the rotary encoder by a first predetermined distance. A connector having an inner surface opposed to an outer surface engages with the rotatable wheel so that the connector moves in sync with the rotatable wheel. The connector engages between the first transfer roller and the object so that the connector moves in sync with the object.