Stereo Camera Partition Plates Cavity Resonance Noise
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Solution Overview
Problem
In stereo cameras with long signal lines connecting imaging elements and image-processing ICs, cavity resonance generates significant radiation noise that can adversely affect external devices.
Innovation Solution
The interior of the camera casing is divided using partition plates at specific intervals corresponding to the frequency of radiation noise, preventing its transmission to external devices by shifting the cavity resonance frequency to a higher band that does not interfere with external device operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the signal line length is increased to connect imaging elements and image-processing ICs, then the device functionality is improved, but radiation noise increases due to cavity resonance
Solution Approach 1:
The patent divides the casing interior into multiple spaces using partition plates positioned at specific intervals along the signal line. This segmentation prevents the formation of a large resonant cavity, thereby reducing radiation noise while maintaining the necessary long signal line connections for device functionality
Solution Approach 2:
The partition plates act as intermediary structures that interrupt the electromagnetic field propagation along the signal line. By positioning these partitions at calculated intervals, the patent mediates between the need for long signal lines and the need to prevent cavity resonance, effectively reducing radiation noise without shortening the signal paths
2Object-generated harmful factors
If traditional noise reduction methods are used, then radiation noise is attenuated, but manufacturing cost increases
Solution Approach 1:
The patent uses simple partition plates divided at specific intervals instead of complex noise reduction systems. This segmentation approach achieves effective noise attenuation through geometric configuration rather than expensive materials or complex structures, maintaining ease of manufacture
Solution Approach 2:
The patent changes the geometric parameters of the casing interior by introducing partitions at specifically calculated intervals based on the signal line frequency and wavelength. This parameter change transforms the resonant characteristics of the cavity, achieving noise reduction through dimensional optimization rather than costly noise suppression materials or active shielding systems
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 configuration effectively attenuates radiation noise by bringing the cavity resonance frequency into a higher range, preventing adverse influences on external devices and offering a cost-effective solution compared to traditional noise reduction methods.
Implementation Method 1
cavity resonance generates significant radiation noise that can adversely affect external devices
Data Source
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AI summary
The present invention prevents adverse effects on an external device due to radiation noise from a signal line. A stereo camera device is provided with: a case; a first image-capturing unit provided at one end in a longitudinal direction of the case; a second image-capturing unit provided at the other end; a circuit board provided inside the case, a processing circuit connected to each of the first image-capturing unit and the second image-capturing unit by a signal line being mounted on the circuit board, and a connector for outputting a signal processed by the processing circuit to an external apparatus being disposed on the circuit board; and a partition member for partitioning the inside of the case into a plurality of spaces along the longitudinal direction at a first interval that corresponds to a frequency bandwidth in which radiation noise from the signal line is suppressed.