Signal processing and fusion method of an integrated quartz resonant accelerometer

被引：0

作者：

Chen F. ^{[1
]}

Jin X. ^{[2
]}

Liu D. ^{[2
]}

Tian W. ^{[2
]}

机构：

[1] School of Automation, Beijing Information Science and Technology University, Beijing

[2] Sensor key laboratory, Beijing Information Science and Technology University, Beijing

来源：

Tian, Wenjie | 1600年 / Editorial Department of Journal of Chinese Inertial Technology卷 / 29期

关键词：

Integrated quartz resonator; Phase-locking frequency multiplication; Quartz resonant accelerometer; Signal processing;

D O I：

10.13695/j.cnki.12-1222/o3.2021.06.015

中图分类号：

学科分类号：

摘要：

Resonant accelerometer can directly convert acceleration into stable frequency signal to obtain excellent performance. Aiming at the low sensitivity of quartz resonant accelerometer and frequency drift caused by temperature, a method of signal processing and fusion for integrated quartz accelerometer based on multi electrode resonator is proposed. The integrated quartz accelerometer outputs multi-channel resonant signals to form differential frequency signals. After fusion, high-precision digital signals can be obtained, and a circuit implementation scheme based on FPGA is designed. The experimental results show that when the output data response time is 125 ms, the scale factor of the sensor is increased from less than 100 Hz/g to 1742.5 Hz/g, and the linear correlation coefficient is R2 = 0.9985. The designed signal processing and fusion system has high real-time performance of signal processing and improves the sensitivity of quartz resonant accelerometer, which can be applied to the data signal processing and real-time measurement system of integrated quartz resonant accelerometer. © 2021, Editorial Department of Journal of Chinese Inertial Technology. All right reserved.

引用

页码：803 / 808

页数：5

共 10 条

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