Display Unit Power Governing for Thermal and Reliability Control
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Solution Overview
Problem
Current power governing systems for digital out-of-home advertising displays fail to provide sufficient automated control to prevent failures while minimizing disruptions to user experience.
Innovation Solution
Implementing an AC governor, DC governor, and thermal governor to manage power consumption and thermal management, with rapid adjustments to illumination levels and power supply to maintain operational stability and user experience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If automated power governing control systems are implemented to prevent failures, then reliability is improved, but device complexity increases
Solution Approach 1:
The control system is segmented into three distinct governor modules: AC governor, DC governor, and thermal governor. Each governor independently monitors and controls specific parameters (AC current, DC current, and temperature respectively), allowing the complex power governing function to be divided into manageable, specialized components that can operate autonomously based on their respective thresholds.
Solution Approach 2:
The governors are configured to take preliminary protective actions by establishing predetermined thresholds for AC current, DC current, and temperature. When these thresholds are approached or exceeded, the governors proactively adjust power levels to illumination sources and other electricity-consuming components before system failure occurs, preventing rather than reacting to problems.
2Reliability
If power levels are rapidly reduced to prevent AC current threshold violations, then reliability is improved, but user experience disruption increases
Solution Approach 1:
The AC governor dynamically adjusts power levels to illumination sources based on real-time monitoring of AC current draw. When the AC current threshold is met or exceeded, the governor rapidly reduces power supplied to illumination sources and other electricity-consuming components. Power levels are automatically increased when the AC current threshold is no longer met, allowing the system to adapt its operational characteristics to prevailing electrical conditions.
Solution Approach 2:
The control system continuously monitors AC current input and uses this feedback to automatically adjust power levels. When AC current exceeds the threshold, the governor detects this condition and responds by reducing power; when current falls below the threshold, power is automatically increased. This closed-loop feedback mechanism ensures reliable prevention of threshold violations while minimizing prolonged disruption to user experience.
3Reliability
If multiple governor systems are integrated to comprehensively control power and thermal loads, then reliability is improved, but device complexity increases
Solution Approach 1:
The AC governor, DC governor, and thermal governor are integrated into a unified control system that operates between the power source and electricity-consuming components. These governors work cooperatively rather than in isolation, with each monitoring its specific parameter (AC current, DC current, temperature) and collectively providing comprehensive power and thermal management. The integration allows the system to handle multiple constraints simultaneously while maintaining coordinated control.
Solution Approach 2:
The control system is designed with multi-functional governors that can handle different types of power and thermal constraints through a common architectural framework. Each governor serves its specific function (AC current control, DC current control, thermal management) but all operate within the same system boundaries and can interact when their control actions overlap, providing universal power governing capability across multiple operational dimensions.
Data Source
AI summary
Display units for prioritizing requested operational updates are disclosed. A control subsystem is in electronic communication with an electronic display, sensor(s), and a thermal management subsystem. The control subsystem operates the display unit based on operational parameters which are specific to readings from the one or more sensors. Requests to update operational parameters for the display unit are received at the control subsystem and are prioritized for implementation.