Check patentability & draft patents in minutes with Patsnap Eureka AI!

Improved practical inertial sensor noise reduction device

An inertial sensor, an improved technology, used in measurement devices, instruments, etc., can solve problems such as a large number of noise and high-frequency disturbance signals

Inactive Publication Date: 2015-04-08
NO 8357 RES INST OF THE THIRD ACADEMY OF CHINA AEROSPACE SCI & IND
View PDF5 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is: how to solve the problem that the current inertial sensor measurement signal contains a large amount of noise and high-frequency disturbance signals, and how to provide an improved practical inertial sensor noise reduction device

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Improved practical inertial sensor noise reduction device
  • Improved practical inertial sensor noise reduction device
  • Improved practical inertial sensor noise reduction device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0070] In order to make the purpose, content, and advantages of the present invention clearer, the specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0071] In order to solve the problems of the prior art, the present invention provides an improved practical inertial sensor noise reduction device, such as figure 1 As shown, it includes: an analog signal programmable anti-aliasing filter module, an AD conversion circuit, an amplifier circuit, an FPGA module, an information processing unit, and a parameter update and download module; The present invention is not described in detail;

[0072] The FPGA module includes: a zero-delay HMM-RLS digital filter, an IIC unit, a serial port unit, and an AD control unit; wherein the IIC unit and the serial port unit are used to realize a parameter update download interface;

[0073] The analog signal programmable anti-aliasing f...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention belongs to the technical fields of calibration testing of inertial sensors and strap-down inertial systems and in particular relates to an improved practical inertial sensor noise reduction device combining analog filtering and digital filtering. According to the first iteration of an HMM-RLS filter provided by the invention, original data of a measured value directly serve as filtering output, and the zero delay of the noise reduction method in a real sense is realized. The calculated amount of the filter is reflected by virtue of single data processing time consumption, and the pure algorithm complexity in the HMM-RLS method is reduced by over 90 percent under the condition that a device implementation platform is not considered. The HMM-RLS is realized by FPGA, and compared with DSP implementation, for the device, an implementation method has the advantage that the operation time needed by an algorithm is further reduced.

Description

technical field [0001] The invention belongs to the technical field of calibration testing of inertial sensors and strapdown inertial systems, and in particular relates to an improved practical inertial sensor noise reduction device combined with analog filtering and digital filtering. Background technique [0002] MEMS inertial sensors and fiber optic inertial sensors have developed rapidly in China. Due to the constraints of existing device hardware conditions and processing technology, the accuracy of inertial components (IMU) has always been far behind that of foreign countries. The accuracy of the IMU seriously affects the accuracy of the strapdown inertial navigation system. On the basis of existing devices, the solutions for improving the measurement accuracy of IMU include: eliminating deterministic errors of IMU (installation error, constant value drift, etc.) through calibration, and eliminating random errors through noise reduction technology. [0003] Noise redu...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G01C25/00
CPCG01C25/005
Inventor 吴旭
Owner NO 8357 RES INST OF THE THIRD ACADEMY OF CHINA AEROSPACE SCI & IND
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com