Display Module-Group Drive Control for AR Heat and Battery Life
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Solution Overview
Problem
The development of lightweight AR head-mounted devices has led to poor heat dissipation and reduced battery capacity, increasing the risk of abnormal operation and limited endurance.
Innovation Solution
A control system that monitors and adjusts the drive state of the display module-group using parameters such as voltage, current, and temperature to implement strategies like voltage calibration, heat dissipation, and low power consumption modes to prevent abnormalities and optimize battery life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If the AR head-mounted device is designed to be lightweight, then the weight is reduced and wearability is improved, but the placement space for heat dissipation modules is compressed, leading to poor heat dissipation performance
Solution Approach 1:
The patent implements dynamic adjustment of display module drive states based on real-time temperature monitoring. The control system continuously monitors temperature parameters and adjusts drive strategies (such as frame rate, resolution, or refresh frequency) to balance heat generation and display performance, resolving the contradiction between lightweight design and heat dissipation capability
Solution Approach 2:
The system changes operational parameters of the display module (e.g., brightness, refresh rate, resolution) in response to temperature conditions. When temperature exceeds thresholds, the system dynamically adjusts these parameters to reduce heat generation, thereby maintaining acceptable thermal performance in a lightweight device structure
2Weight of moving object
If the battery size is reduced to decrease device weight, then the device becomes lighter and more wearable, but the battery capacity is lowered, negatively impacting device endurance
Solution Approach 1:
The system implements partial action by adjusting display module drive states to consume only the necessary amount of power for current usage conditions. Instead of always operating at maximum performance, the system dynamically scales power consumption to match actual display requirements and thermal conditions, thereby extending battery life without increasing battery capacity
Solution Approach 2:
The control system continuously monitors temperature and power consumption parameters, using this feedback to dynamically adjust display module operation. This closed-loop control ensures optimal power efficiency by adapting display performance to real-time thermal and power conditions, maximizing endurance with limited battery capacity
3Device complexity
If the display module drive state is not monitored and adjusted, then the system operation is simple, but the risk of abnormal operation such as over-current, over-voltage, and over-load increases
Solution Approach 1:
The control system implements self-service by automatically monitoring drive state parameters and adjusting display module operation based on temperature and electrical conditions. The system autonomously detects abnormal states (over-current, over-voltage, over-load) and takes corrective actions without external intervention, ensuring reliable operation while maintaining relatively simple system architecture
Solution Approach 2:
The patent introduces a control system as an intermediary between the power supply and display module. This intermediary continuously monitors drive state parameters and mediates power delivery by adjusting drive strategies based on temperature and electrical conditions, preventing abnormal operations while maintaining system simplicity through centralized control
Data Source
AI summary
The present disclosure provides a control system including: a module-group drive state monitor, a module-group drive controller and a module-group drive state regulator. The module-group drive state monitor is configured to obtain drive state parameters of a display module-group, wherein the drive state parameters reflect a drive state of the display module-group. The module-group drive controller is configured to: determine a current drive state of the display module-group based on the drive state parameters, and select a drive strategy for the display module-group based on the current drive state. The module-group drive state regulator is configured to: drive the display module-group based on the drive strategy that is selected. The present disclosure also relates to a control method that can be applied to the control system, and to a device that can perform the control method.