Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Signal detecting method and system

A signal detection and signal technology, applied in the field of signal processing, can solve the problems of low detection efficiency, inaccurate detection results, inaccurate measurement results, etc., and achieve the effects of accurate otoacoustic emission signals, improve detection efficiency, and improve accuracy

Active Publication Date: 2014-07-02
SHENZHEN INST OF ADVANCED TECH
View PDF5 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] Based on this, it is necessary to provide a signal detection method that can improve detection efficiency and accuracy for the problems of low detection efficiency and inaccurate detection results in existing detection.
[0014] In addition, it is also necessary to provide a signal detection system that can improve detection efficiency and accuracy for the problem of inaccurate measurement results

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
  • Signal detecting method and system
  • Signal detecting method and system
  • Signal detecting method and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0047] The technical solution of the signal detection method and system will be described in detail below in combination with specific embodiments and accompanying drawings, so as to make it more clear.

[0048] Such as figure 1 Shown, in one embodiment, a kind of signal detection method comprises the following steps:

[0049]Step S110, acquiring a time-domain FM signal, and using the time-domain FM signal as a stimulus signal to stimulate the reflex area and the distortion area.

[0050] Specifically, the time domain FM signal is a chirp signal, a trigonometric function FM signal, a logarithmic FM signal, or a frequency domain synthesized frequency sweep signal.

[0051] After the time-domain FM signal is obtained, a window function is added to the time-domain FM signal, and the time-domain FM signal with the multiplied window function is used as a stimulus signal to stimulate the reflex area and the distortion area. Such as figure 2 As shown, the time-domain FM signal is...

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 discloses a signal detecting method. The signal detecting method comprises the following steps that a time domain frequency-modulated signal is obtained and is taken as a stimulation signal to stimulate a reflection region and a distorted region, an otoacoustic emission signal generated by the reflection region is separated from an otoacoustic emission signal generated by the distorted region, and time-frequency domain filtering is conducted on the separated otoacoustic emission signal of the distorted region, so that a pure otoacoustic emission signal of the distorted region is obtained. In addition, the invention provides a signal detecting system. According to the signal detecting method and system, due to the fact that the time domain frequency-modulated signal is taken as the stimulation signal for stimulation, the signals of the reflection region and the distorted region are separated preliminarily according to the nonlinear characteristic of the otoacoustic emission signals, the pure otoacoustic emission signal is obtained by conducting filtering on the separated signal through a time-frequency domain filter, the detecting accuracy is improved, multiple frequencies within an extremely wide frequency range can be detected at a time, and the detecting efficiency is improved.

Description

technical field [0001] The invention relates to the field of signal processing, in particular to a signal detection method and system. Background technique [0002] There are many types of signals, such as otoacoustic emission signals, optical frequency domain imaging signals, frequency conversion signals of radar systems, etc. When these signals are detected, there may be many impurity signals in them, and the effective signals and impurity signals can be quickly separated from the detected signals is an urgent problem to be solved. [0003] Taking otoacoustic emission signals as an example, otoacoustic emissions (otoacoustic emissions, OAE) are essentially the process of audio energy generated in the cochlea passing through the middle ear to the external auditory canal, and released in the form of air vibration. These audio energies are derived from the normal activity of hair cells in the inner ear, so by analyzing this audio energy, we can know the damage of hair cells ...

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
IPC IPC(8): A61B5/12
Inventor 陈世雄邓军田岚李光林
Owner SHENZHEN INST OF ADVANCED TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com