In-vehicle monitoring camera selection via IP table
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Solution Overview
Problem
In railway vehicles, the varying positional relationships between monitoring cameras and emergency call devices complicate the display of accurate images when an emergency call is made, as existing systems either lack integration or cannot satisfy the vibration specifications required for railway vehicles.
Innovation Solution
An in-vehicle monitoring system that uses an information control device to coordinate monitoring cameras and emergency call devices via an in-train network, selecting and displaying relevant imaging data based on pre-defined IP addresses or multicast addresses to ensure detailed images of the in-vehicle status are captured and displayed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If monitoring cameras are installed at various angles to suit different vehicle purposes, then the adaptability of the monitoring system is improved, but the complexity of coordinating camera display during emergencies increases due to varying positional relationships
Solution Approach 1:
The system performs preliminary actions by pre-storing the positional relationships between emergency call devices and monitoring cameras in a table during system setup. When an emergency occurs, the control device simply retrieves the pre-stored camera identification from the table based on the emergency call device's location, eliminating the need for complex real-time coordination calculations and reducing operational complexity.
2Device complexity
If conventional monitoring systems are used without integration, then the device complexity is reduced, but the measurement precision of incident location and image relevance deteriorates
Solution Approach 1:
The system merges the emergency call device information with the monitoring camera selection process through centralized control. The control device integrates the emergency call device's location data with the pre-stored camera position table to automatically identify and display the most relevant camera images, achieving precise incident location tracking while maintaining relatively simple system structure.
3Loss of information
If real-time image display from multiple cameras is implemented during emergencies, then the information completeness is improved, but the loss of time for processing and transmitting multiple image streams increases
Solution Approach 1:
The system extracts only the necessary image information by using the pre-stored positional relationship table to identify and retrieve images from specific monitoring cameras that are most relevant to the emergency location. This selective extraction approach provides complete incident information while minimizing processing time by avoiding unnecessary transmission of images from all cameras.
Data Source
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AI summary
An in-vehicle monitoring system including monitoring cameras 1 and emergency call devices 2, a display unit 4, and an information control device 3, and monitoring inside of a vehicle by using images taken by the monitoring cameras 1, wherein a table, in which IP addresses of the emergency call devices 2 and IP addresses of the monitoring cameras 1 are stored in association with each other in a one-to-one relationship or a one-to-many relationship, is set in the information control device 3, and upon receiving a call signal 2a from an operated emergency call device 2, the information control device 3 specifies an IP address of a monitoring camera 1 corresponding to the operated emergency call device 2 from the IP addresses of the monitoring cameras 1 based on the table, selects imaging data 1a from the specified monitoring camera 1 from pieces of imaging data 1a from the monitoring cameras 1, and transmits it to the display unit 4.