Rail Vehicle Transmission Address Allocation
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Solution Overview
Problem
Conventional rail vehicle transmission systems face challenges in easily setting addresses for electrical devices, particularly when multiple devices of the same type are present, leading to mis-settings and difficulties in network construction and maintenance.
Innovation Solution
A transmission system with transmission devices and relay control devices that temporarily stop data exchange with other devices to allow for automatic address setting, using a transmission station address conversion device to ensure unique addresses for each device, even when multiple identical devices are connected, thereby creating a network of high redundancy and maintainability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If DHCP automatic address allocation is used, then address setting becomes automated, but correspondence between IP address and electrical device is lost
Solution Approach 1:
The transmission device acts as an intermediary between the DHCP server and electrical devices. It receives automatically allocated IP addresses from the DHCP server and then maps these addresses to specific electrical devices based on their MAC addresses, thereby preserving the correspondence relationship while maintaining automation.
Solution Approach 2:
The transmission device monitors the network and uses feedback information about which electrical devices are connected and their MAC addresses to accurately map IP addresses to the correct devices, ensuring that the automated address allocation maintains proper correspondence relationships.
2Adaptability or versatility
If multiple switches for address setting are provided, then address setting flexibility is improved, but mis-settings by workers occur more easily
Solution Approach 1:
The system eliminates manual address setting by enabling electrical devices to automatically obtain their own IP addresses through DHCP. This self-service approach removes the source of human error while maintaining the flexibility to accommodate multiple devices and network configurations.
Solution Approach 2:
The patent replaces the mechanical manual switch-setting process with an automated electronic DHCP protocol. This substitution eliminates human error in address configuration while maintaining the ability to dynamically allocate addresses to multiple devices.
3Quantity of substance
If small size switches are used to accommodate large number of switches, then device count is increased, but mis-settings by workers occur more easily
Solution Approach 1:
The DHCP-based automatic address allocation system allows each switch and electrical device to self-configure without requiring manual intervention. This eliminates the risk of worker mis-settings while enabling the deployment of a large number of devices throughout the rail vehicle network.
Data Source
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AI summary
Transmission system for train vehicles, comprising in each vehicle transmission devices which are interconnected by a transmission path (e.g. a bus). Electrical devices (e.g. display devices) are connected to the transmission devices and exchange data therewith. A transmission relay control device of each transmission device automatically allocates an address to the connected electrical device. The addresses could be created based on the host transmission device address itself, or they represent default addresses. In a second embodiment, the transmission devices comprise an address conversion device.