Dual-Processor Electronic Display for Fault-Tolerant Data Continuity
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Solution Overview
Problem
Electronic instruments with liquid crystal screens fail to display data when they malfunction, leading to data loss and operational disruptions.
Innovation Solution
An electronic display device with a divided screen into two regions, driven by two independent processors, where one region displays real-time data and the other region displays cumulative data stored in the first processor's memory, ensuring data continuity even if the first processor fails.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single processor is used to drive the display screen, then the device complexity is reduced, but the reliability deteriorates because the entire display fails when the processor malfunctions
Solution Approach 1:
The display screen is divided into two independent regions (first display region and second display region), each driven by a separate processor (first processor and second processor). This segmentation ensures that when one processor fails, the other can continue to display data, thereby improving reliability while maintaining manageable device complexity through modular architecture
Solution Approach 2:
Different regions of the display screen are assigned different functions: the first display region displays real-time data under normal operation, while the second display region is prepared to display historical data or alternative information when the first processor fails. This local differentiation of functionality ensures continuous information availability without requiring complete system redundancy
2Loss of information
If real-time data is stored only in the first processor's memory, then the data storage capacity is sufficient for normal operation, but the loss of information occurs when the first processor fails
Solution Approach 1:
The second processor is pre-configured with memory and display capabilities, and the display screen is pre-divided into two regions. This preliminary preparation ensures that when the first processor fails, the system can immediately switch to using the second processor to display data from its memory, preventing information loss without requiring complex real-time data migration mechanisms
Solution Approach 2:
The second processor maintains a copy of data in its memory that can be displayed when the first processor fails. This copying mechanism ensures data preservation by having redundant storage capacity in the second processor's memory, allowing continuous display operation without requiring complex data synchronization protocols
Data Source
Figure 1
AI summary
The application relates to an electronic display device simulating mechanical display and a data storage method thereof. The electronic display device comprises: a display screen, a first processor, a first display driver, a second processor, and a second display driver; the display screen is divided into two independent regions, which are region A and region B; the first processor is connected with the first display driver; the first processor is used for driving the region A to display real-time data by the first display driver; the first processor communicates with the second processor, and the first processor transmits the cumulative flow to the second processor; the second processor is connected with the second display driver; the second processor is used for driving the region B to display the cumulative flow stored in the region through the second display driver; when an instrument occurs a fault, the first processor is not capable of working normally, the region A is not capable of displaying normally, but the region B displays the cumulative flow normally. When the electronic instrument fails, it can still display instrument data normally, and the accuracy of the instrument data is high.