Adaptive Signal Strength Control for Wearable Object Detection
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Solution Overview
Problem
Wearable devices consume excessive power due to repeated adjustments in signal strength based on detected movements, reducing their available operational time.
Innovation Solution
A wearable device equipped with sensors and processors that adaptively adjust signal strength based on detected movements, including changes in position and direction, to optimize power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the wearable device repeats the process of transmitting a signal with maximum strength and gradually adjusting signal strength according to object position, then the object detection accuracy is improved, but the power consumption increases and available time is reduced
Solution Approach 1:
The patent applies dynamics by making the signal transmission strategy adaptive rather than static. The processor dynamically adjusts signal transmission based on detected movement: when movement is detected, the device transmits signals at maximum strength to maintain detection accuracy; when no movement is detected, it uses reduced strength to save power. This dynamic adaptation resolves the contradiction between maintaining high detection accuracy and reducing power consumption.
Solution Approach 2:
The patent implements feedback by continuously monitoring movement status and using this information to adjust signal transmission strength. The processor receives movement detection data from the sensor, processes this feedback information, and accordingly adjusts the signal transmission strategy. This closed-loop feedback mechanism allows the system to optimize between detection accuracy and power consumption based on real-time conditions.
2Reliability
If the wearable device transmits signals with maximum strength repeatedly upon detecting movement, then the object detection reliability is improved, but the power consumption increases
Solution Approach 1:
The system dynamically adjusts signal transmission based on movement detection. When movement is detected, maximum strength signals are transmitted to ensure reliability. When no movement is detected, lower strength signals are used to reduce power consumption. This dynamic behavior allows the system to maintain high reliability when needed while minimizing power consumption during stable periods.
Solution Approach 2:
The patent changes the signal strength parameter based on movement status. The processor modifies the transmission parameter (signal strength) according to the detected movement condition, switching between maximum strength and reduced strength modes. This parameter change strategy enables the system to balance reliability and power consumption effectively.
3Measurement precision
If the wearable device performs repeated signal transmission and adjustment processes, then the detection accuracy is maintained, but the operational time is reduced
Solution Approach 1:
The system dynamically adjusts signal transmission based on movement detection to optimize operational time. When movement is detected, the system uses maximum strength signals to maintain detection accuracy. When no movement is detected, it reduces signal strength to extend operational time. This dynamic adaptation allows the device to maintain accuracy when necessary while extending battery life during idle periods.
Solution Approach 2:
The patent changes the signal transmission parameter (strength) based on operational conditions. By adjusting this parameter dynamically according to movement status, the system balances detection accuracy requirements with operational time extension, allowing the device to last longer while maintaining sufficient accuracy for practical applications.
Data Source
AI summary
A wearable device includes a first sensor, at least one second sensor, and at least one processor configured to control the first sensor to transmit a first signal with a first strength, identify a position of a first object based on a first response signal to the first signal, based on the identified position of the first object, control the first sensor to transmit a second signal with a second strength corresponding to a first distance between the wearable device and the first object, detect, by using the at least one second sensor, a movement of the wearable device, the movement of the wearable device including at least one of a position change of the wearable device and a direction change of the wearable device, and determine whether to adjust the second strength, based on the movement of the wearable device and the position of the first object.