Vehicle Distributed Display Device Dedicated Safety Critical Input
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Solution Overview
Problem
Current distributed display systems for vehicles are inefficient due to their complexity, high cost, large size, and weight, and lack flexibility and redundancy, making them unsuitable for effectively managing and presenting safety-critical information across multiple subsystems.
Innovation Solution
A distributed display device with a configuration that includes dedicated and shared input links for safety-critical and non-safety-critical information, allowing redundancy and flexibility by using multiple information processing units and an event monitoring system to adapt display presentations based on critical events, ensuring continuous presentation of safety-critical information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple separate dedicated systems are integrated in the vehicle to monitor/control subsystems, then each subsystem can be controlled, but the cost and space requirements increase significantly
Solution Approach 1:
The display unit is designed with multiple inputs (dedicated safety critical input and shared non-safety critical input) that can receive information from different subsystems. A single display unit can present information from multiple subsystems simultaneously, replacing the need for multiple separate display systems and reducing overall space requirements while maintaining comprehensive monitoring capability.
Solution Approach 2:
The patent combines multiple information streams from different subsystems into a single display unit through dedicated and shared input links. This merging of previously separate systems into one integrated display unit reduces the total number of components and space occupied while ensuring reliable monitoring of all subsystems.
2Reliability
If multiple separate dedicated systems are integrated in the vehicle to monitor/control subsystems, then each subsystem can be controlled, but the system complexity increases
Solution Approach 1:
The display unit serves multiple functions by receiving and processing information from multiple subsystems through dedicated and shared inputs. This multi-functional design consolidates what would otherwise require multiple separate control systems, reducing overall system complexity while maintaining comprehensive monitoring and control capabilities.
Solution Approach 2:
By merging multiple separate dedicated systems into a single integrated display unit with multiple inputs, the patent reduces the number of separate components and simplifies the overall system architecture. The dedicated safety critical input and shared non-safety critical input work together within one unit, eliminating the need for multiple independent systems.
3Area of stationary object
If a single display system is used for all subsystems, then space is reduced, but the ability to guarantee safety critical information presentation is compromised
Solution Approach 1:
The display unit implements local quality by providing different input paths with different reliability characteristics for different types of information. The dedicated safety critical input is specifically designed for safety-critical information with guaranteed presentation, while the shared non-safety critical input handles other information. This differentiation within the single display unit ensures safety requirements are met while maintaining space efficiency.
Solution Approach 2:
The input structure is segmented into dedicated safety critical inputs and shared non-safety critical inputs, allowing the system to treat different information types differently. This segmentation within the unified display unit enables guaranteed presentation of safety-critical information while still using a single display device, thus maintaining both space efficiency and reliability.
4Reliability
If redundant processing units are implemented, then system reliability improves, but cost increases
Solution Approach 1:
The system dynamically switches between the dedicated safety critical input and the shared non-safety critical input based on operational needs and fault conditions. This dynamic capability allows the system to maintain high reliability for safety-critical functions while using cost-effective shared resources for non-critical functions, optimizing the balance between reliability and manufacturing cost.
Solution Approach 2:
The shared non-safety critical input serves multiple subsystems and can potentially back up the dedicated input in certain configurations, providing a form of redundancy without requiring completely separate redundant systems. This multi-functional shared input reduces the overall cost of implementing fault tolerance compared to fully redundant dedicated systems.
Data Source
AI summary
The invention relates to a distributed display device for a vehicle comprising a set of subsystems, wherein said display device comprises at least one operator station, comprising at least one display unit arranged to receive and present information from at least one subsystem of a set of subsystems of the vehicle, wherein said at least one display unit comprises at least one dedicated safety critical input and at least one shared non safety critical input so as to be able to receive and present information from said at least one predetermined subsystem via at least one dedicated safety critical link and at least one shared non safety critical link.