一种微型大带宽环形剪切式压电加速度传感器
By using a ring support assembly and temperature difference assembly technology, the rigidity and natural frequency of the sensor are enhanced, solving the problem of unstable frequency response characteristics of traditional ring shear piezoelectric accelerometers under high-frequency large impact vibration, and achieving accuracy and stability of signal output.
CN117214458BActive Publication Date: 2026-07-17NORTHWESTERN POLYTECHNICAL UNIV
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- NORTHWESTERN POLYTECHNICAL UNIV
- Filing Date
- 2023-08-30
- Publication Date
- 2026-07-17
AI Technical Summary
Technical Problem
Traditional ring-type shear piezoelectric accelerometers exhibit unstable frequency response characteristics under high-frequency, large-impact vibrations, and traditional bonding methods are unreliable, affecting sensor performance.
Method used
The piezoelectric ring is supported by three arc-shaped support plates of a ring support assembly. Combined with temperature difference assembly technology, the rigidity and natural frequency of the sensor are improved, and the impact of vibration in non-major axis directions is reduced.
Benefits of technology
This improves the frequency response characteristics and shock resistance of the sensor, ensuring the accuracy and stability of signal output under high-frequency vibration.
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Figure CN117214458B_ABST
Abstract
本发明涉及一种微型大带宽环形剪切式压电加速度传感器，包括：基座、环形支撑组件、压电环、质量块以及盖板，基座上开设有安装腔，其一侧还开设有通道；环形支撑组件设置在安装腔内；压电环悬空架设在环形支撑组件上，压电环内壁面和外壁面上均设置有电极层，内壁面的电极层与电信号处理电路连接；质量块套设在压电环的内圈，且质量块上设置有限位结构，盖板用于封装基座的安装腔。本装置降低横轴灵敏度，改善了传感器的频响特性。
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