Display Device Motion Detection via Multipath Channel Analysis
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Solution Overview
Problem
Display devices often consume unnecessary power when no user is present, leading to increased energy expenditure.
Innovation Solution
A display device that retrieves multipath channel characteristic data from a wireless signal, performs preprocessing, calculates representative similarity values, and adjusts its power mode based on detected motion to minimize power consumption by entering a power-saving mode or shutting off when no motion is detected.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the display device operates continuously to provide display functions, then the display functionality is maintained, but power consumption increases unnecessarily when no user is present
Solution Approach 1:
The display device dynamically adjusts its operating state based on detected motion. When motion is detected in the region, the device operates normally to provide display functionality. When no motion is detected for a predetermined period, the device transitions to a power-saving mode or shuts off, thereby reducing power consumption while maintaining reliability when needed.
Solution Approach 2:
The display device uses its own wireless communication system to detect motion in its vicinity. By monitoring changes in multipath channel characteristic data from wireless signals, the device autonomously determines whether a user is present and adjusts its power state accordingly, eliminating the need for separate motion sensors.
2Use of energy by moving object
If the display device uses multipath channel characteristic data to detect motion, then power consumption can be reduced, but the complexity of data processing increases
Solution Approach 1:
The wireless communication system performs dual functions: maintaining network connectivity and detecting motion through multipath channel characteristic data analysis. This multi-functionality allows the device to reduce power consumption by repurposing existing communication infrastructure for motion detection, avoiding the need for additional dedicated motion detection hardware and processing systems.
Data Source
AI summary
A display device and a method of controlling the same are provided. The display device may include: a communicator comprising communication circuitry configured to receive a wireless signal transmitted by a wireless router, a memory configured to store one or more instructions, and a processor configured to execute the one or more instructions stored in the memory, wherein the processor may be configured to continuously retrieve multipath channel characteristic data based on the wireless signal, perform preprocessing on the retrieved multipath channel characteristic data of the wireless signal, determine representative values for each reference time by calculating a similarity for each time period of result data corresponding to a result of the preprocessing, determine a motion within a specified region of the display device, based on a change in the representative values over time, and control the display device based on the determined motion within the specified region of the display device.