Train Display Slot Antenna Layout to Cut Wiring Cost
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Solution Overview
Problem
Conventional in-vehicle displays in railway vehicles require a large number of wires for communication, leading to increased outfitting costs.
Innovation Solution
An in-vehicle wireless display system utilizing a slot antenna for wireless data transmission and reception, reducing the need for physical wires and lowering installation costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If in-vehicle displays and terminal devices are connected via transmission lines, then reliable communication is achieved, but the number of wires increases and outfitting cost increases
Solution Approach 1:
The patent replaces the mechanical connection system (transmission lines/wires) with an electromagnetic field-based wireless communication system using slot antennas. This substitution eliminates the need for physical wire connections while maintaining communication functionality, directly resolving the contradiction between communication reliability and the number of wires required.
2Reliability
If transmission lines are used for connection, then stable data transmission is ensured, but outfitting cost increases
Solution Approach 1:
The patent substitutes the mechanical transmission line system with a wireless electromagnetic communication system using slot antennas. This eliminates the need for costly wire installation and outfitting work while providing stable data transmission through wireless means, thereby reducing outfitting costs while maintaining transmission stability.
3Device complexity
If wireless communication using slot antenna is implemented, then the number of wires is reduced and outfitting cost is reduced, but wireless communication capability must be ensured
Solution Approach 1:
The patent introduces slot antennas as intermediary devices that convert electrical signals into electromagnetic waves for wireless transmission and vice versa. These slot antennas serve as mediators between the terminal devices and displays, enabling reliable wireless communication without requiring physical wire connections, thus resolving the contradiction between reducing wire complexity and ensuring communication reliability.
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
The system effectively transmits and receives data wirelessly, reducing the number of wires and associated costs while maintaining reliable communication for displaying information to passengers.
Implementation Method 1
a slot antenna 8 for transmitting and receiving data
Data Source
Figure 1~3
Figure 4~5
Figure 6
AI summary
An in-vehicle wireless display (1) of the present invention includes a slot antenna (8) to transmit and receive data, a nonmagnetic member (14) provided apart from a slot (16) formed in the slot antenna (8), to cover the slot (16), and a display unit (12) installed in a vehicle (T) constituting a train (100), to display information on the basis of data received by the slot antenna (8).