Wireless Input Device Power Management with Piezoelectric Harvesting
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Wireless input devices face power depletion issues, leading to device inoperability until batteries are replaced, resulting in waste and inconvenience, as they typically require a single battery for operation.
Innovation Solution
A wireless input device with a primary battery set, backup battery, electricity generating device, energy-storage/charging device, and switching mechanism that allows for power management by selecting between primary and backup batteries, and generating electricity through user interactions to extend usage time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a wireless input device uses a single battery to supply electricity, then the device structure is simple, but the battery becomes depleted over time causing the device to become inoperable and requiring replacement
Solution Approach 1:
The battery system is segmented into a primary battery set (first battery and second battery) and a backup battery. The power control device divides the battery management into separate functional units, allowing independent operation and replacement of each battery component without affecting the entire system.
Solution Approach 2:
A backup battery is pre-configured in the system before the primary batteries are depleted. The switching device is pre-arranged to automatically or manually switch to the backup battery when the primary batteries run out, ensuring continuous operation without interruption.
2Reliability
If a wireless input device uses multiple batteries simultaneously, then continuous operation is ensured, but the device complexity increases with additional components
Solution Approach 1:
The switching function is extracted as a separate switching device that can be manually operated or automatically controlled. This separates the power selection logic from the battery components themselves, making the system more modular and easier to manage despite having multiple batteries.
Solution Approach 2:
The power control device automatically detects the power status of the first battery and switches to the second battery when needed, enabling self-management of power sources without requiring user intervention for battery monitoring and switching decisions.
3Productivity
If batteries are replaced frequently, then the device remains operational, but time is lost during replacement and unused batteries are wasted
Solution Approach 1:
The backup battery is prepared in advance within the device, eliminating the need to wait for external battery replacement. When primary batteries are depleted, the system can immediately switch to the pre-positioned backup battery, maintaining continuous operation and avoiding downtime.
Solution Approach 2:
The system recovers the utility of depleted batteries by having a backup battery ready to take over. Instead of discarding the device when one battery set is exhausted, the system recovers functionality by switching to the backup battery, effectively extending the operational life of the device.
4Duration of action of moving object
If an electricity generating device is added to the wireless input device, then extended operation is achieved through energy harvesting, but the device complexity and manufacturing difficulty increase
Solution Approach 1:
The electricity generating device is merged with the existing battery system and integrated into the housing. The generated electricity is combined with the battery power through the energy-storage/charging device, creating a unified power management system that extends battery life without requiring a completely separate energy harvesting system.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables continuous operation of wireless input devices by switching to a backup battery when primary batteries are depleted, optimizing battery life and reducing waste by allowing for extended use until new batteries are replaced.
Implementation Method 1
an electricity generating device (104), which generates electricity via clicking/pressing operations to the wireless input device
Data Source
AI summary
This invention provides a wireless input device, including a primary battery set, a backup battery, an electricity generating device, an energy-storage/charging device, and a switching device. The primary battery set provides electricity to the wireless input device. The backup battery provides electricity to the wireless input device when the primary battery set does not have sufficient electricity. The electricity generating device generates electricity in response to clicking/pressing operations to the wireless input device. The energy-storage/charging device is coupled to the backup battery and the electricity generating device. The energy-storage/charging device stores the electricity generated by the electricity generating device and charges the backup battery when the stored electricity has reached a predetermined volume. The switching device is coupled to the primary battery set and the backup battery. The switching device selects the primary battery set or the backup battery to provide electricity to the wireless input device.