Electronic Wind Instrument Transmission Member Rotation Detection
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Solution Overview
Problem
Existing electronic wind instruments face challenges in accurately detecting the rotation of a transmission member due to potential contact with sensors and deformation of elastic sealing members, leading to decreased detection sensitivity.
Innovation Solution
An electronic wind instrument design featuring a rotatable transmission member with an optical sensor system, where the sensor measures the distance between the transmission member and a detection unit, and an elastic member applies a restoring force to maintain accurate detection without sensor contact, using a rubber-like elastic component for sealing and support.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the distance between the transmission member and sensor is set to be relatively large to prevent contact, then the risk of sensor contact is reduced, but the detection sensitivity decreases
Solution Approach 1:
The patent employs a dynamic positioning mechanism where the transmission member rotates around a pivot point. The sensor is positioned to detect the rotation of the transmission member through changes in distance or position as it rotates, allowing the system to adapt the detection parameter dynamically during operation rather than using a fixed static distance that would compromise either contact prevention or sensitivity.
Solution Approach 2:
The patent introduces an intermediary detection mechanism between the transmission member and the sensor. This intermediary allows the sensor to indirectly measure the state of the transmission member through a mediating physical quantity (such as magnetic field changes, optical changes, or mechanical linkage), enabling detection without requiring the sensor to be in direct close proximity to the transmission member, thus preventing contact while maintaining sensitivity.
2Ease of operation
If the elastic member is used to return the transmission member to the initial state, then the transmission member can be reset, but the elastic member may deform when the mouthpiece is fitted, changing the elastic force
Solution Approach 1:
The patent divides the sealing and elastic member into separate components. The sealing member is specifically designed to seal between the mouthpiece and the instrument body, while the elastic member is positioned to apply force to the transmission member. This segmentation prevents the sealing function from interfering with the elastic force application, ensuring consistent elastic force regardless of sealing conditions.
Solution Approach 2:
The elastic member is designed with specific local properties to resist deformation from sealing pressures. The material and structural characteristics of the elastic member are optimized to maintain its elastic force under the local conditions of the mouthpiece fitting, ensuring that the elastic force remains consistent and reliable for returning the transmission member to its initial state.
3Force
If the elastic force from the elastic member changes due to deformation, then the transmission member position changes, but it becomes difficult to accurately detect the amount of rotation
Solution Approach 1:
The patent incorporates a feedback mechanism where the sensor continuously monitors the position or state of the transmission member during rotation. The detection system receives feedback signals that reflect the actual rotation amount, allowing for real-time adjustment or compensation for any position changes caused by elastic force variations, thereby maintaining accurate rotation detection despite changes in elastic force.
Solution Approach 2:
The patent replaces direct mechanical measurement of rotation with an alternative detection mechanism. Instead of mechanically measuring the rotation angle directly, the system uses a sensor to detect a physical quantity that correlates with rotation (such as magnetic field changes, optical changes, or position changes), providing a more stable and accurate measurement that is not affected by elastic force variations.
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
This design enhances the detection accuracy of the transmission member's rotation by preventing sensor contact and maintaining sensitivity, while minimizing deformation and ensuring reliable sealing, thus accurately measuring the amount of rotation.
Implementation Method 1
a sensor which is disposed to face a detection unit on the other end side of the transmission member and measures a distance between it and the detection unit
Data Source
AI summary
To provide an electronic wind instrument capable of accurately detecting the amount of rotation of a transmission member. An electronic wind instrument whereby contact with an optical sensor by a flat surface of a rear section can be suppressed even when at least a prescribed amount of a reed is bitten, as a result of the flat surface rotating in a direction away from the optical sensor when the rear section of the transmission member rotates in conjunction with displacement of the reed. As a result, the spacing between the facing flat surface and the optical sensor can be set comparatively narrowly in the initial state and the detection sensitivity at the optical sensor increased, thereby enabling accurate detection of the rotation amount of the transmission member (the amount of the reed that is bitten).