Shutter Apparatus Dual Driving Sources Power Management
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Solution Overview
Problem
Conventional shutter apparatuses face challenges in efficiently managing power consumption and maintaining continuous imaging speed, leading to limitations in frame rate and increased battery size due to the difficulty in shifting peak power consumption timing during changing imaging conditions.
Innovation Solution
A shutter apparatus with a front blade unit and rear blade unit, driven by separate front and rear drive members, which are controlled by a controller to adjust their driving times based on imaging conditions, utilizing front and rear cam gears to optimize torque transmission and reduce power consumption peaks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single motor is used to charge both front and rear drive members, then device complexity is reduced, but power consumption management becomes difficult and continuous imaging speed is limited
Solution Approach 1:
The patent divides the single driving source into two separate driving sources (front driving source and rear driving source), each independently charging the front and rear drive members respectively. This segmentation allows independent control of power consumption timing for each blade unit, enabling better power management while maintaining driving capability for continuous imaging operations.
2Volume of stationary object
If a single motor charges both drive members, then device size is reduced, but power consumption peaks cannot be shifted according to imaging conditions
Solution Approach 1:
The patent implements dynamic control of the two driving sources based on imaging conditions. The controller can independently adjust the timing and power consumption characteristics of each driving source, allowing the system to adapt to different imaging requirements (such as continuous shooting vs. single shot) by shifting power consumption peaks as needed.
3Use of energy by moving object
If separate front and rear driving sources are used, then power consumption timing can be optimized, but device complexity increases
Solution Approach 1:
The patent employs periodic charging actions for the front and rear drive members through their respective cam gears and driving sources. By controlling the timing and sequence of these periodic charging actions, the system optimizes power consumption efficiency - the front driving source charges the front drive member during one phase, and the rear driving source charges the rear drive member during another phase, reducing peak power demands.
Data Source
AI summary
A shutter apparatus includes a front blade unit and a rear blade unit configured to open and close an opening for exposure control, a front drive member and a rear drive member configured to drive the front blade unit and the rear blade unit between an open position and a closed position of the opening, respectively, a front cam gear and a rear cam gear configured to charge the front drive member and the rear drive member, respectively, a front driving source and a rear driving source connected to and configured to rotate the front cam gear and the rear cam gear, respectively, and a controller configured to control the front driving source and the rear driving source based on an imaging condition so as to change driving times of the front blade unit and the rear blade unit.