Multi-Camera Cooling Control Using Fan Noise Thresholds
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Solution Overview
Problem
In multi-angle shooting systems, the operating sound of cooling apparatuses, such as fans, interferes with recorded sound due to inadequate consideration of fan-microphone distance and switching of image capture apparatuses, limiting cooling capacity and affecting sound quality.
Innovation Solution
A control apparatus that connects multiple image capture devices and microphones, controlling cooling apparatuses based on sound data to set a threshold for operating sound, ensuring it does not exceed a permissible level, thereby optimizing cooling without interfering with recorded sound.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the fan is driven at high speed to enhance cooling capacity, then the cooling performance is improved, but the operating sound of the fan exceeds the threshold and interferes with recorded sound
Solution Approach 1:
The patent applies dynamics by making the fan driving amount adjustable and controllable. The controller dynamically adjusts the fan speed based on real-time sound level monitoring, allowing the system to optimize between cooling performance and noise reduction. The fan can operate at different speeds (first driving amount for normal operation, second driving amount when sound exceeds threshold) to adapt to varying conditions.
Solution Approach 2:
The patent implements feedback control by continuously monitoring the sound level with a microphone and using this information to adjust the fan operating parameters. When the sound level exceeds a predetermined threshold, the controller receives the sound level information and adjusts the fan driving amount accordingly, creating a closed-loop control system that balances cooling needs with acoustic quality.
2Object-affected harmful factors
If the fan driving amount is reduced to minimize operating sound, then the sound quality is improved, but the cooling capacity is insufficient
Solution Approach 1:
The system dynamically adjusts fan speed based on actual sound level measurements rather than using a fixed low speed. The fan can operate at a first driving amount when sound levels are acceptable and switch to a second driving amount when additional cooling is needed, ensuring optimal performance in both acoustic and thermal conditions.
Solution Approach 2:
The patent changes the operational parameters of the fan based on monitored conditions. By adjusting the fan driving amount (speed) in response to sound level thresholds, the system optimizes the balance between cooling efficiency and acoustic interference, using parameter adjustment rather than fixed operation.
3Ease of operation
If a fixed peak frequency threshold is set for fan operating sound, then the control method is simple, but it cannot adapt to different fan-microphone distances and switching of image capture apparatuses
Solution Approach 1:
Instead of using a fixed predetermined threshold, the system employs feedback control where the threshold is dynamically determined based on actual sound level measurements from the microphone. This allows the system to adapt to different fan-microphone distances and device configurations while maintaining simple operation, as the threshold adjusts automatically to current conditions.
Solution Approach 2:
The system performs preliminary sound level measurements to establish appropriate threshold values before normal operation begins. This preliminary action allows the system to adapt to specific device configurations and distances, ensuring optimal performance when image capture apparatuses are switched or repositioned.
Data Source
AI summary
A control apparatus includes a connection unit capable of connecting a plurality of image capture apparatuses and at least one microphone and a controller that controls the plurality of image capture apparatuses and a cooling apparatus of at least one of the plurality of image capture apparatuses. The controller decides a threshold of an operating sound of the cooling apparatus based on sound data obtained from the microphone upon operating the cooling apparatus, and controls an operation of the cooling apparatus to maximize a driving amount within a range in which the operating sound of the cooling apparatus does not exceed the threshold.