Seat-Integrated MID Module for Multi-Function Public Transport Seating

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Solution Overview

Problem

Existing functional modules for public transport vehicles do not allow the integration of multiple electronic devices due to integration constraints such as size, cabling, and aesthetics, limiting the provision of enhanced passenger comfort.

Innovation Solution

The integration of Mechatronics Integrated Devices (MID) technology, utilizing methods like Laser Direct Structuring and plasma metallization, enables the incorporation of various electronic components, including a reading light, presence sensor, USB plug, and NFC antenna, within a single module that conforms to the seat's curvature for aesthetic integration.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If traditional separate devices are used for each electronic function, then each device can be individually installed and maintained, but the number of cables and mounting points increases, compromising aesthetics and increasing complexity

Engineering Contradiction:
Improveintegration of multiple electronic devicesVSAvoidcabling and mounting structure
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent combines multiple electronic devices (reading light, presence sensor, USB plug, NFC antenna, seat reservation display) into a single integrated functional module that mounts to the seat in one location, eliminating the need for separate cables and mounting points for each device while maintaining all individual functions

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The functional module serves as a universal platform that can provide multiple electronic functions simultaneously - illumination, sensing, power delivery, communication, and display - all within a single integrated unit that can be installed in one mounting location

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If multiple electronic devices are integrated in different parts, then each device can be independently accessed, but the overall integration level remains poor and space is wasted

Engineering Contradiction:
Improvenumber of electronic devicesVSAvoidmodule size
Core Design Contradiction:
Adaptability or versatilityVSVolume of moving object

Solution Approach 1:

The functional module employs a nested structure where multiple electronic devices and their components are integrated within a single compact housing, with each device nested within the same spatial envelope rather than requiring separate volumes, thereby reducing the overall module size while maintaining all functions

Inventive Principle:
Principle #7Nested doll (Nesting)

3Ease of manufacture

If traditional devices are used, then installation is straightforward with separate components, but aesthetic integration to the seat curvature is compromised

Engineering Contradiction:
Improveinstallation simplicityVSAvoidaesthetic integration to seat curvature
Core Design Contradiction:
Ease of manufactureVSShape

Solution Approach 1:

The functional module housing is designed with curved surfaces that follow and conform to the curvature of the seat, allowing aesthetic integration into the seat's contours while maintaining a single integrated structure that is installed as one unit, preserving both manufacturing simplicity and aesthetic quality

Inventive Principle:
Principle #14Spheroidality (Curvature)

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

This solution allows for the seamless integration of multiple functionalities in a single module, reducing cabling and enhancing passenger comfort without compromising aesthetics, with the ability to easily add or remove features based on manufacturer needs.

Implementation Method 1

laser direct structuring (LDS)

Methodology Applied
Scientific EffectLaser direct structuring: Laser Ablation

Implementation Method 2

plasma metallization

Methodology Applied
Scientific EffectPlasma metallization: Plasma Spray

Data Source

PatentEP4477543B1A functional module intended to be integrated in a seat of a public transport vehicle
Publication Date: 2026.01.21 ALSTOM HOLDINGS SA
  • EP4477543B1 patent drawingFigure 1
  • EP4477543B1 patent drawingFigure 2
  • EP4477543B1 patent drawingFigure 3

AI summary

The functional module (10) comprises a casing (12) shaped to form a visible part, and integrating at least one electronic device. It comprises a Mechatronics Integrated Device (28), arranged in the casing (12), including at least partially the electronic device.