Microphone Slip Ring Segmentation for Head Detection
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Solution Overview
Problem
Conventional microphones with replaceable heads face challenges in reliably detecting changes, such as rotation or proper attachment, which can lead to noise issues or incorrect identification of the microphone head.
Innovation Solution
A microphone design featuring a first slip ring with segmented contacts for detecting rotation and a second slip ring with encoded segments for identification, along with resistors in the head and housing for voltage measurement to determine the microphone head type, allowing for early detection and optional deactivation or identification of the microphone head.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional leading contacts are used to detect microphone head changes, then the structure is simple, but the detection reliability is insufficient
Solution Approach 1:
The slip ring is divided into multiple segments (first slip ring with first and second segments, second slip ring with third and fourth segments) that can rotate relative to each other. This segmentation enables reliable detection of microphone head changes through rotational position detection while maintaining a relatively simple overall structure.
Solution Approach 2:
The patent introduces an intermediate detection mechanism (detection unit with slip rings and segments) between the microphone head and the detection system. This intermediary structure provides reliable detection of head changes without requiring direct complex sensing elements in the microphone head itself.
2Reliability
If rotation detection is added to detect microphone head changes, then detection reliability improves, but device complexity increases
Solution Approach 1:
The slip ring structure serves multiple functions: it detects rotation of the microphone head, provides electrical contacts for power and signals, and enables the encoded identification system. This multi-functionality reduces the need for separate dedicated components, thereby limiting the increase in device complexity while improving detection reliability.
Solution Approach 2:
The patent combines the rotation detection function with the electrical contact function in a single slip ring assembly. The segmented slip rings simultaneously provide rotational position information and electrical connectivity, merging multiple functions into one structure to avoid excessive complexity.
3Measurement precision
If encoded segments are used for microphone head identification, then identification accuracy improves, but manufacturing complexity increases
Solution Approach 1:
The second slip ring is divided into multiple segments (third and fourth segments) that can be arranged in encoded fashion. This segmentation allows for simple binary or multi-position encoding schemes that are easy to manufacture using standard PCB or contact arrangement techniques, while still providing accurate identification of different microphone head types.
Solution Approach 2:
The encoded identification system uses simple binary or positional coding on the slip ring segments, which is a form of information copying. This approach provides high identification accuracy through combinatorial coding while maintaining manufacturing simplicity, as the encoded patterns can be reproduced using standard manufacturing processes.
4Adaptability or versatility
If voltage measurement across resistors is used for identification, then identification capability is added, but device complexity increases
Solution Approach 1:
The identification system uses the existing electrical connection path through the slip rings and contacts to perform voltage measurements. The same contacts that provide power and audio signals also serve as measurement points for identification, allowing the system to identify microphone head types using existing circuitry without adding separate dedicated identification circuits.
Solution Approach 2:
The electrical contact system serves multiple functions: power transmission, audio signal transmission, and identification measurement. By using the same contacts and circuit paths for multiple purposes, the patent adds identification capability without proportionally increasing device complexity.
Data Source
AI summary
Thus there is provided a microphone (10) having a first end (12) with a first slip ring (100) which is divided into at least first and second segments (GND, 300). The first slip ring (100) co-operates with a microphone head (12) when the microphone head (12) is fastened to the first end (12) of the microphone by means of a screw connection. The microphone further has a detection unit (16) coupled to the at least first and second segments (GND, 300) of the first slip ring (100) to detect rotation of the microphone head (12).