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

Local space active noise control system based on rail locomotive

A technology for active noise control and rail locomotives, applied in active noise control, sound-generating devices, instruments, etc., to achieve the effects of improving the noise environment, reducing costs, and facilitating installation

Pending Publication Date: 2020-11-03
西安艾科特声学科技有限公司
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Facing the increasingly prominent problem of low-frequency noise in rail locomotives, traditional passive noise reduction methods cannot effectively solve it

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
  • Local space active noise control system based on rail locomotive
  • Local space active noise control system based on rail locomotive
  • Local space active noise control system based on rail locomotive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments of the present invention belong to the protection scope of the present invention.

[0031] According to an embodiment of the present invention, a rail vehicle-based local space active noise control system is provided.

[0032] Such as Figure 1-Figure 2 As shown, the local space active noise control system based on rail locomotive according to the embodiment of the present invention includes an active controller 1, a control box 2, an error microphone 3, a reference microphone 4 and a secondary sound source 5, wherein;

[0033] The error microphone 3 is used to collect the ...

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 local space active noise control system based on a rail locomotive, which relates to the technical field of noise control and comprises an active controller, a control box, an error microphone, a reference microphone and a secondary sound source. The noise signal of the primary noise target control area is collected and converted into the electric signal, the electric signal is transmitted to the active controller to obtain the anti-phase secondary noise with the same size and opposite phase as the primary noise signal, the anti-phase secondary noise and the primary noise are mutually counteracted to achieve the purpose of noise reduction, the vehicle body noise optimization cost is reduced, the low-frequency noise is effectively controlled, the control system issmall in size, convenient to install and arrange and is arranged on the premise that the layout is symmetrical and aesthetic, the noise control effect is considered, the normal operation area of a driver and the moving area of passengers are not affected, the noise environment of the driver and the passengers is improved, and the comfort of the passengers taking the rail locomotive is improved.

Description

technical field [0001] The invention relates to the technical field of noise control, in particular to a local space active noise control system based on rail locomotives. Background technique [0002] With the vigorous construction of urbanization in our country, urban rail transit is developing rapidly. Among them, rail locomotive systems such as subways and high-speed rails undoubtedly play an important role in urban rail transit systems. For the huge rail locomotive transportation network that has been built, passenger flow, operation With the continuous expansion of speed and density, the noise problem brought about by it has become more and more prominent. The problem of rail locomotive noise mainly refers to two aspects, one is the noise of medium and high frequency components, and the other is the noise of low frequency components. The harm of noise is multifaceted and subtle. Long-term exposure to noise can stimulate the nervous system, cardiovascular system and bl...

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): G10K11/178
CPCG10K11/17815G10K11/17817G10K11/17883G10K2210/1283
Inventor 代海张亚洲玉昊昕李荣吴凡袁梦囝孟堃汪杰
Owner 西安艾科特声学科技有限公司
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