Power Supply Control Device for Image Processing Apparatus
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing power supply control systems for image processing apparatuses face challenges in efficiently detecting user presence and transitioning from sleep mode to active mode, leading to delayed power-up times and reduced user convenience.
Innovation Solution
A power supply control device equipped with a human-presence sensor that divides its detection range into lower and upper areas, using pyroelectric elements to detect moving objects, allowing for earlier detection of user presence and timely power supply resumption by monitoring both foot and head movements within specific ranges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a single detection range is used for user presence detection, then the device structure is simple, but the detection accuracy and timing are insufficient
Solution Approach 1:
The detection range is segmented into multiple distinct zones: a first detection range for detecting the user's feet and a second detection range for detecting the user's head. This segmentation allows the system to detect different body parts at different distances, improving detection accuracy and enabling more precise power supply control based on user approach.
2Ease of operation
If the entire apparatus is kept in active mode, then user convenience is improved, but energy consumption increases
Solution Approach 1:
The system performs preliminary detection of user presence in the first detection range (feet detection) before fully activating the apparatus. When a user approaches and their feet are detected, the system prepares for power-up by activating only the power supply unit and relevant control circuits, rather than immediately powering up the entire apparatus. This preliminary action reduces energy consumption while maintaining user convenience.
Solution Approach 2:
The power supply mode dynamically changes based on detection results. The system transitions between different power states: sleep mode when no user is present, partial power mode when user approach is detected (power supply unit active), and full power mode when user presence is confirmed. This dynamic adaptation optimizes energy consumption while ensuring user convenience.
3Loss of time
If power supply unit is always active for monitoring, then detection response time is improved, but continuous power consumption occurs
Solution Approach 1:
Instead of keeping the entire apparatus in active monitoring mode, the system applies partial action by keeping only the power supply unit and detection circuits active during sleep mode. This partial monitoring capability enables fast response when users approach while consuming minimal energy. The system uses this partial power state to detect user approach in the first detection range and prepare for quick power-up.
4Productivity
If detection ranges for feet and head are combined, then the detection system is simpler, but the ability to detect user approach at different stages is reduced
Solution Approach 1:
The detection system is segmented into two distinct ranges with different functions: the first detection range optimized for detecting feet (indicating user approach) and the second detection range optimized for detecting head (confirming user presence). This segmentation enables the system to detect user approach at different stages, improving detection efficiency and enabling staged power supply control.
Solution Approach 2:
Each detection range is configured with local quality optimized for its specific detection target. The first detection range is positioned and configured to detect feet at a certain distance, while the second detection range is configured to detect head at a different distance. This local optimization ensures that each detection zone performs its specific function effectively, improving overall detection efficiency.
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 earlier and more efficient power-up of image processing apparatuses by accurately detecting user presence through both foot and head movements, improving user convenience and reducing power-up times.
Implementation Method 1
using pyroelectric elements to detect moving objects
Data Source
AI summary
A power supply control device includes a moving object detecting unit and a power supply unit. The moving object detecting unit is attached to a processing apparatus body including power supply targets and a controller, and is capable of detecting a moving object moving in the vicinity of the processing apparatus body. The moving object detecting unit has a lower detection range for detecting a part of a moving object that is substantially in contact with the floor, and an upper detection range for detecting a top part of a moving object. The power supply unit is included in the controller and is always supplied with power to monitor approach of a moving object with the moving object detecting unit. The power supply unit supplies, upon the moving object detecting unit detecting a moving object, power to a power supply target that includes a part of the controller.