Lamp Panel Drive Redundancy for Fault-Tolerant Display Control
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Solution Overview
Problem
Existing display drive systems for lamp panels have low reliability due to the failure of drive units or signal lines, leading to abnormal displays when at least one drive unit becomes abnormal during the display stage.
Innovation Solution
A display drive system comprising multiple drive units and a control unit, where the drive units are connected to a lamp panel and the control unit detects the operating state of the drive units. If a first drive unit is found to be abnormal, the lamp panel is driven by a second drive unit to ensure continuous light emission, with the second drive unit outputting a second drive current that sums up to the first drive currents from the other drive units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single drive unit is used to drive the lamp panel, then the device complexity is reduced, but the reliability deteriorates because the system fails when the drive unit becomes abnormal
Solution Approach 1:
The drive system is divided into multiple independent drive units (first drive unit and second drive unit), each capable of independently driving the lamp panel. This segmentation allows the system to continue operating with one drive unit if another fails, thereby improving reliability without significantly increasing overall system complexity.
Solution Approach 2:
The system dynamically changes the operating parameters by switching between different drive units based on their operational status. When a drive unit becomes abnormal, the system changes the active drive unit from the first drive unit to the second drive unit, maintaining system functionality and reliability through parameter adjustment.
2Reliability
If multiple drive units are used to drive the lamp panel, then the reliability is improved through redundancy, but the device complexity increases
Solution Approach 1:
Both the first drive unit and second drive unit are designed with identical functionality and capabilities, each able to independently drive the lamp panel. This universality ensures that either drive unit can take over the other's function if needed, providing redundancy and improved reliability while keeping the added complexity manageable through standardized design.
3Reliability
If drive units operate without fault detection, then the device complexity is reduced, but the reliability deteriorates due to undetected abnormalities
Solution Approach 1:
The control unit continuously receives feedback signals from the drive units to monitor their operational status. This feedback mechanism enables the control unit to detect abnormalities in real-time and switch from the abnormal drive unit to the normal drive unit, ensuring continuous reliable operation of the lamp panel.
Solution Approach 2:
The control unit is pre-configured with the capability to switch between drive units and has the second drive unit ready as a backup. When an abnormality is detected in the first drive unit, the system can immediately activate the second drive unit without delay, maintaining continuous operation and preventing display interruptions.
Data Source
AI summary
Provided is a display drive system, including: a plurality of drive units and a control unit. The plurality of drive units are connected to a lamp panel, and at least one of the plurality of drive units is configured to drive, during a display stage, the lamp panel to emit light. The control unit is connected to the plurality of drive units, and is configured to detect an operating state of the drive units driving the lamp panel to emit light. In response to detecting that a first drive unit is abnormal, the lamp panel is driven, by a second drive unit, to emit light, wherein the first drive unit is at least one of the drive units driving the lamp panel to emit light, and the second drive unit is at least one of the plurality of drive units other than the first drive unit.