Light Control Shutter Adaptive Drive Feedback
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Solution Overview
Problem
Conventional light control apparatuses face instability in shutter operation due to environmental conditions and component degradation, leading to re-exposure issues and unstable drive currents.
Innovation Solution
A control method for a light control apparatus that involves detecting the position and state of a light control member and applying adaptive drive signals based on detected conditions to ensure stable movement and positioning, using electromagnetic drive sources and sensors to adjust drive signal intensity and duration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a constant drive current is applied to the shutter, then the shutter operation is simple and stable under normal conditions, but the shutter cannot operate stably when environmental conditions change or components deteriorate
Solution Approach 1:
The patent implements a feedback control system where the drive current to the shutter is continuously adjusted based on detected position and state information. The control unit receives feedback signals about the shutter's operational state and environmental conditions, then dynamically modifies the drive current to maintain stable operation despite component deterioration or environmental changes.
Solution Approach 2:
The patent transitions from a static constant drive current approach to a dynamic drive current adjustment system. The drive current is continuously adapted based on real-time detection of shutter position, speed, and environmental conditions, allowing the system to respond to changing operational requirements and maintain stability throughout the shutter's lifecycle.
2Reliability
If high current is applied during shutter closing to stabilize movement, then re-exposure due to bouncing is prevented, but power consumption increases
Solution Approach 1:
The patent applies periodic or pulsed drive signals to the shutter rather than continuous high current. The drive current is applied in controlled pulses during specific phases of shutter operation (such as during closing and opening transitions), then reduced or stopped when the shutter is stationary, thereby preventing re-exposure while minimizing overall power consumption.
Solution Approach 2:
The patent applies high current only partially during the shutter operation cycle - specifically during the critical phases when the shutter is moving and stability is needed - rather than continuously. The drive current is reduced to low levels or zero when the shutter is stationary, providing just enough power to maintain stability during motion while minimizing energy waste during stationary periods.
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 approach enables stable operation of the light control member irrespective of its position and state, reducing re-exposure and power consumption by optimizing drive signal intensity and duration.
Implementation Method 1
a drive source for moving the light control member from the first position to the second position and from the second position to the first position
Data Source
AI summary
A method includes a drive step of causing a light control member from a first position to a second position and from the second position to the first position by a drive source, a detection step of detecting the position and state of the light control member, and a drive signal application step of applying a desired drive signal to the drive source in accordance with the position or state of the light control member detected in the detection step.