Motion-Triggered Remote Controller Wake-Up for Battery Saving
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Solution Overview
Problem
Remote controllers with wireless communication transceivers continue to consume power even when not in use, leading to battery depletion and rendering the device unusable when power is insufficient.
Innovation Solution
Incorporating a motion sensing circuit that switches the wireless communication circuit from a sleep state to a working state only when specific reference motions are detected, and switching back to sleep when the received signal strength indication falls below a threshold, thereby conserving power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the radio wave transceiver continues to operate when not in use, then the remote controller can respond immediately when needed, but the battery power is depleted quickly
Solution Approach 1:
The patent applies the dynamics principle by making the radio wave transceiver's operational state changeable between working state and sleep state. The transceiver dynamically adjusts its operation mode based on whether a motion trigger is detected, allowing it to operate at full performance when needed while conserving energy during idle periods.
Solution Approach 2:
The patent implements periodic action through the motion sensing circuit that periodically triggers the radio wave transceiver to switch between sleep and working states. The transceiver operates in short active periods when motion is detected and remains in low-power sleep periods otherwise, creating a periodic on-off operation pattern that balances responsiveness with energy conservation.
2Duration of action of stationary object
If the radio wave transceiver is switched to sleep state to save power, then battery life is extended, but the remote controller cannot be activated when needed
Solution Approach 1:
The patent applies preliminary action by using the motion sensing circuit to detect user intent before the radio wave transceiver needs to operate. The motion trigger serves as a preliminary signal that pre-activates the transceiver from sleep state, ensuring it is ready to communicate immediately when the user intends to use the remote controller.
Solution Approach 2:
The motion sensing circuit acts as an intermediary between the user's physical action and the radio wave transceiver. It mediates the activation process by detecting motion and triggering the transceiver to wake up, bridging the gap between the low-power sleep state and the active communication state without requiring the transceiver to continuously monitor for activation.
3Reliability
If the wireless communication circuit is activated continuously, then communication reliability is maintained, but unnecessary battery drain occurs
Solution Approach 1:
The patent extracts the continuous operation requirement from the radio wave transceiver by separating the activation trigger function (motion detection) from the communication function. Only when the motion trigger is detected does the transceiver extract itself from the sleep state and perform communication, eliminating unnecessary continuous operation and associated energy waste.
Data Source
AI summary
A remote controller, a remote-control system and a control method thereof are provided. The remote controller includes a motion sensing circuit and a wireless communication circuit electrically connected to the motion sensing circuit. The motion sensing circuit determines whether or not a motion of the remote controller complies with one of multiple reference motions. When the motion of the remote controller complies with one of the reference motions, the wireless communication circuit is switched from a sleep state to a working state. The wireless communication circuit that is in the working state determines whether or not a received signal strength indication between the remote controller and a controlled device is greater than or equal to a strength threshold. When the received signal strength indication is less than the strength threshold, the wireless communication circuit is switched from the working state to the sleep state.