Display Apparatus Battery Replacement Mode Control
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Solution Overview
Problem
Display apparatuses with high power consumption require battery replacement, which typically necessitates shutting down the device, as increasing subsidiary battery capacity is impractical due to size, weight, and cost constraints, making continuous operation during battery exchange challenging.
Innovation Solution
A display apparatus with a control unit that switches between two batteries, allowing the device to maintain communication and reduce power consumption during battery replacement by adjusting display modes, frame rates, and display regions, ensuring continuous operation without interruption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of repair
If battery replacement is performed in a display apparatus with high power consumption, then the battery can be replaced, but the apparatus must be stopped
Solution Approach 1:
The power supply system is segmented into multiple independent batteries (first battery and second battery). This allows one battery to be replaced while the other continues to power the apparatus, enabling battery replacement without stopping the display apparatus.
Solution Approach 2:
The control unit changes the power supply parameter by switching from the first battery to the second battery during replacement. This parameter change enables continuous operation while maintaining the display function.
2Productivity
If a subsidiary battery is added to provide power during battery exchange, then continuous operation is enabled, but the size, weight, and cost increase
Solution Approach 1:
Instead of adding a large capacity subsidiary battery, the system segments the power supply into two smaller batteries. This approach achieves continuous operation capability while keeping each battery's size and weight manageable, avoiding the need for a large backup battery.
Solution Approach 2:
The system uses a second battery with sufficient capacity to maintain operation during the replacement process, rather than requiring a battery with excessive capacity to cover the entire operational period. This partial action approach reduces the weight and cost while still achieving the goal of continuous operation.
3Reliability
If power is supplied to the communication unit during battery replacement, then communication continuity is maintained, but power consumption increases
Solution Approach 1:
The control unit prepares to switch to the second battery in advance and manages power distribution proactively. By planning the power switch timing and preparing the second battery, the system can maintain communication continuity while minimizing the impact on power consumption during the transition.
Solution Approach 2:
The control unit changes power distribution parameters dynamically, ensuring that the communication unit receives power from the second battery during replacement. This parameter management maintains communication reliability while optimizing overall power consumption through efficient battery switching.
Data Source
AI summary
A display apparatus includes an image display unit that enables a user to visually recognize an image and transmits external scenery therethrough, a first battery, a second battery, a communication unit, and a control unit that switches a power source between the first battery and the second battery. The control unit causes an operation mode of the display apparatus to transition from a normal operation mode to a battery replacement mode in which power consumption of the image display unit and the communication unit is lower than that in the normal operation mode in a case where the power source is changed from the first battery to the second battery. The communication unit is maintained in a communicable state in the battery replacement mode.