Railway Window Transparency Segmentation for Quiet Zone Noise Control

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Solution Overview

Problem

Railway vehicle cars with windows transparent to telecommunication waves fail to maintain silence in designated quiet zones due to passengers making loud phone calls, disturbing other passengers.

Innovation Solution

Incorporating windows opaque to telecommunication waves, in addition to transparent ones, to allow communication while preventing sound disturbances in specific areas, with distinct zones for calling and silence, and arranging these windows strategically along the car's longitudinal direction.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If windows transparent to telecommunication waves are installed, then passengers can communicate with the exterior, but noise from phone calls disturbs passengers in quiet zones

Engineering Contradiction:

Improvecommunication capabilityVSAvoidnoise disturbance

Core Design Contradiction:

Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The car is divided into distinct communication zones and quiet zones based on window transparency. Windows are selectively transparent or opaque to telecommunication waves, creating spatial segmentation that allows communication activities in designated areas while maintaining silence in others. This resolves the contradiction by separating the communication function from the quiet zone requirement.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different windows have different transparency properties tailored to their specific location and function. Windows in communication zones are transparent to telecommunication waves, while windows in quiet zones are opaque. This local differentiation allows each zone to fulfill its specific requirement without compromising the other.

Inventive Principle:

Principle #3Local quality

2Adaptability or versatility

If all windows are transparent to telecommunication waves, then communication is possible throughout the car, but silence cannot be maintained in designated quiet zones

Engineering Contradiction:

Improvecommunication availabilityVSAvoidquiet zone silence

Core Design Contradiction:

Adaptability or versatilityVSStability of the object's composition

Solution Approach 1:

The car interior is segmented into communication zones and quiet zones with clearly defined boundaries marked by different window transparency. This spatial segmentation enables simultaneous maintenance of communication availability in designated areas and silence stability in quiet zones.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Window transparency is differentiated by location: transparent windows are installed in communication zones to enable signal penetration, while opaque windows are installed in quiet zones to block signals and maintain silence. This local quality differentiation resolves the contradiction between communication availability and quiet zone stability.

Inventive Principle:

Principle #3Local quality

3Object-affected harmful factors

If windows opaque to telecommunication waves are installed, then silence is maintained in quiet zones, but communication capability is reduced

Engineering Contradiction:

Improvenoise preventionVSAvoidcommunication possibility

Core Design Contradiction:

Object-affected harmful factorsVSAdaptability or versatility

Solution Approach 1:

The car is segmented into zones with different window transparency properties. Opaque windows are strategically installed only in quiet zones to prevent noise, while transparent windows remain in communication zones to preserve communication capability. This segmentation resolves the contradiction by applying noise prevention measures only where needed.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Window transparency is optimized for each zone's specific function: opaque windows in quiet zones provide noise prevention, while transparent windows in communication zones maintain communication possibilities. This local quality approach resolves the contradiction by tailoring window properties to local requirements.

Inventive Principle:

Principle #3Local quality

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Maintains tranquility in designated zones by blocking telecommunication wave transmission, allowing passengers to communicate externally while preventing noise disturbances, enhancing passenger comfort during journeys.

Implementation Method 1

the glazing of which is capable of preventing the transmission of telecommunication waves

Methodology Applied

Scientific EffectElectromagnetic wave blocking: Absorption (EM radiation)

Implementation Method 2

the glazing of which is transparent to telecommunication waves

Methodology Applied

Scientific EffectElectromagnetic wave transmission: Electromagnetic Induction

Data Source

PatentEP3722178B1Car for railway vehicle comprising at least one transparent window with telecommunication waves and at least one opaque window with telecommunication waves, and associated railway vehicle

Publication Date: 2022.08.24 SPEEDINNOV

Figure 1
Figure 2

AI summary

This vehicle (12) has a plurality of windows, each window having glazing, the plurality of windows including at least one window transparent (14) to waves whose glazing is transparent to telecommunication waves. The plurality of windows also includes at least one window opaque (16) to waves whose glazing is capable of preventing the transmission of telecommunication waves.