一种超声波雷达的余震消除电路、芯片和装置
By applying a cross-directional bias voltage to the ultrasonic transducer, its natural frequency is changed, and the aftershock damping is increased, aftershocks are quickly eliminated. This solves the problem that ultrasonic radar cannot receive echo signals during aftershocks, and achieves efficient aftershock elimination and reliable reception of echo signals.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- ZHENGZHOU UNIV
- Filing Date
- 2023-07-17
- Publication Date
- 2026-07-17
AI Technical Summary
In existing technologies, ultrasonic radar cannot receive or distinguish echo signals during aftershocks, resulting in inaccurate detection results. Existing aftershock elimination methods are either inefficient or have low accuracy.
A bias voltage is applied to the ultrasonic transducer in a cross-directional bias voltage. The polarization transducer deforms in the direction of the bias voltage, changing its natural frequency, increasing aftershock damping, and quickly eliminating aftershocks. The generation of new aftershocks is also prevented by DC voltage and gradually decreasing voltage amplitude.
This effectively reduces the aftershock time of the ultrasonic transducer, ensures reliable reception of the echo signal, and improves detection accuracy and efficiency.
Smart Images
Figure CN116953676B_ABST