Inclined Mounting Face Vibration Sensor for Resonant Noise Reduction
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Solution Overview
Problem
Existing vibration detecting devices face issues with resonant noise interference due to the alignment of vibration sensors, which affects the accuracy of vibration detection.
Innovation Solution
The vibration detecting device incorporates a vibration sensor attached to a mounting face inside the housing that is inclined with respect to the attachment face, using a flexible wiring component to connect the sensor to a circuit board, which processes the detection signal and reduces resonant noise by optimizing the sensor's orientation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the vibration sensor is attached to a mounting face that is parallel to the attachment face, then the sensor can be easily mounted and aligned, but resonant noise interferes with vibration detection accuracy
Solution Approach 1:
The patent applies asymmetry by inclining the mounting face at a specific angle (e.g., 45 degrees) relative to the attachment face, rather than using a parallel configuration. This asymmetric orientation changes the vibration transmission path and prevents resonance between the housing and sensor, thereby eliminating resonant noise interference while maintaining detection accuracy.
Solution Approach 2:
The patent changes the geometric parameter of the mounting face from parallel (0 degrees) to inclined at a specific angle. This parameter modification alters the vibration transmission characteristics and prevents resonant coupling between the housing structure and the vibration sensor, thus reducing harmful noise while preserving measurement precision.
2Measurement precision
If the mounting face is inclined to reduce resonant noise, then vibration detection accuracy improves, but the device structure becomes more complex
Solution Approach 1:
The patent implements asymmetry through a simple inclined mounting face design, where the mounting face is positioned at a specific angle relative to the attachment face. This asymmetric configuration achieves noise reduction without requiring complex additional components or multi-layer structures, thus maintaining device simplicity while improving measurement precision.
Solution Approach 2:
The patent applies local quality by modifying only the mounting face orientation while keeping the rest of the housing structure simple and unchanged. This localized modification achieves the desired noise reduction effect without increasing overall device complexity, as only the specific area where the sensor mounts is affected by the inclination.
3Adaptability or versatility
If a flexible wiring component is used to connect the vibration sensor to the circuit board, then the sensor can be positioned at an inclined angle, but the electrical connection becomes more susceptible to interference
Solution Approach 1:
The patent uses a flexible wiring component as an intermediary element that accommodates the inclined mounting face while providing electrical connectivity. This flexible wire acts as a mediator between the inclined sensor position and the circuit board, allowing angular displacement without compromising electrical connection reliability or introducing significant interference.
Data Source
AI summary
According to one embodiment, a vibration detecting device includes a housing, a vibration sensor in the housing, a circuit board in the housing, a flexible wiring component, a first face, and a second face. The vibration sensor is housed in the housing. An electric component that processes a detection signal of the vibration sensor is provided on the circuit board. The wiring component electrically connects the vibration sensor and the circuit board. The first face is provided on the housing and is configured to be attached to an object. The second face is provided inside the housing and is inclined with respect to the first face, the vibration sensor being attached thereto.