Invention Grant
- Patent Title: Transducer transfer impedance calibration device based on spatial frequency domai smoothing technology
-
Application No.: US16861218Application Date: 2020-04-29
-
Publication No.: US11976961B2Publication Date: 2024-05-07
- Inventor: Yi Chen , Liuqing Yang , Xiaofeng Jin , Guanghui Jia , Han Zhao
- Applicant: Zhejiang University
- Applicant Address: CN Hangzhou
- Assignee: Zhejiang University
- Current Assignee: Zhejiang University
- Current Assignee Address: CN Hangzhou
- Main IPC: G01H15/00
- IPC: G01H15/00 ; G01S11/14 ; G01V1/18 ; G01V1/30

Abstract:
A transfer impedance calibration device for transducers based on spatial frequency domain smoothing technology is provided. The calibration device comprises a signal transmitter, a power amplifier, a transducer pair, a measurement amplifier, a signal collector, a measurement processor and a current sampler. The device extracts acoustic channel information through the sound filed spatial information or measurement method to design a spatial domain smoothing filter, and then comprehensively processes the transmitted current signal and the received signal through the spatial frequency domain smoothing technology to obtain the transfer impedance of the transducer pair.
Public/Granted literature
- US20200378825A1 TRANSDUCER TRANSFER IMPEDANCE CALIBRATION DEVICE BASED ON SPATIAL FREQUENCY DOMAI SMOOTHING TECHNOLOGY Public/Granted day:2020-12-03
Information query
IPC分类:
G | 物理 |
G01 | 测量;测试 |
G01H | 机械振动或超声波、声波或次声波的测量 |
G01H15/00 | 测量力学阻抗或声阻抗 |