Television Control Circuit Human Body Detection Energy Saving
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Solution Overview
Problem
Conventional televisions waste significant energy when the display screen is active but not being viewed, as it continues to consume power even when the user is not present, leading to inefficient energy usage.
Innovation Solution
A television control circuit that includes a human body detection module connected to a main board, which controls the power supply to the display screen and T-CON board, automatically turning off the display when no user is detected and turning it back on when a user is present, using a power supply board and a human body detection module to manage power distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the display screen continuously plays when users are not present, then the television is always ready for viewing, but energy consumption increases significantly
Solution Approach 1:
The television system performs preliminary detection of user presence before activating the display screen. The control circuit detects whether a user is present in advance, and only activates the display when needed, avoiding continuous operation and energy waste while ensuring readiness when users are actually present
Solution Approach 2:
The television system uses its own integrated human body detection module to automatically determine when the display should be active or inactive. The system serves itself by autonomously monitoring user presence and controlling power supply to the display based on detected conditions, eliminating the need for manual user intervention
2Use of energy by moving object
If the display screen is turned off when no user is detected, then energy consumption is reduced, but the television response time increases when users return
Solution Approach 1:
The control circuit performs preliminary detection of user presence using the human body detection module. When users approach, the system is already monitoring and ready to activate the display immediately, eliminating startup delays. The detection mechanism is continuously active in a low-power state, prepared to trigger display activation without delay
Solution Approach 2:
The television system dynamically adjusts the power supply state of the display based on real-time user presence detection. The control circuit transitions the display between active and inactive states according to detected conditions, optimizing the balance between energy saving and response time by being dynamically ready rather than statically on or off
3Productivity
If the display screen remains active for sound-only mode, then audio content can be enjoyed without interruption, but energy waste increases
Solution Approach 1:
The control circuit performs preliminary detection to determine whether users are present before maintaining display activation for sound-only mode. When no users are detected, the system proactively turns off the display while maintaining audio playback capability, preventing energy waste while preserving continuous audio content enjoyment
Solution Approach 2:
The television system segments the functionality into independent audio and visual components. The control circuit can selectively activate or deactivate the display (visual component) while maintaining audio playback (audio component), allowing sound-only mode operation without display energy consumption when appropriate
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
This solution effectively reduces energy consumption by ensuring the display screen is only active when a user is present, thereby saving energy and simplifying user operation.
Implementation Method 1
a human body detection module; in response to the human body detection module failing to detect characteristic information of a user in front of a television that has been started
Data Source
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AI summary
Disclosed is a television control circuit comprising a display screen, a power supply board, a human body detection module and a main board. The power supply board is connected to a power supply input end of the main board and a power supply input end of the display screen. A detection output end of the human body detection module is connected to a detection input end of the main board. Control output ends of the main board are connected to the power supply board and display screen. The main board controls the on-off state of the display screen according to the detection result obtained by the human body detection module that whether a user is watching the television. A television is also disclosed. The main board of the television control circuit of the present disclosure automatically control the power supply state of the display screen of the television according to the detection result, obtained by the human body detection module, of characteristic information of users in front of the television, which achieves energy saving.