Smart Camera Data Scheduling for Bandwidth-Limited Defect Monitoring
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Solution Overview
Problem
In production device management systems, image data from smart cameras is large and irreversibly compressed, making it difficult to adjust image processing parameters and causing communication bottlenecks, which hampers the identification of defects and abnormalities in production systems.
Innovation Solution
An image capturing apparatus that captures images, performs image processing, and accumulates data, transmitting processing results during image capturing periods and storing raw image data during suspension periods, allowing for efficient communication and parameter adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If image data is transmitted continuously during image capturing period, then real-time monitoring is improved, but network bandwidth is consumed excessively
Solution Approach 1:
The patent segments the image data transmission into two distinct parts: compressed feature values transmitted during the image capturing period for real-time monitoring, and original uncompressed image data transmitted during the image capturing suspension period for detailed analysis. This segmentation allows the system to balance real-time monitoring needs with bandwidth conservation, as the compressed feature values occupy minimal bandwidth while the full image data is transmitted only when the network is less utilized.
Solution Approach 2:
The patent implements periodic action by alternating between two transmission modes based on the image capturing cycle: during the image capturing period, only compressed feature values are transmitted; during the image capturing suspension period, the original image data is transmitted. This periodic switching of transmission content aligns with the operational cycle of the image capturing apparatus, ensuring real-time monitoring capability while optimizing network bandwidth utilization.
2Productivity
If image data is compressed for transmission, then communication efficiency is improved, but image processing parameter adjustment becomes difficult
Solution Approach 1:
The patent segments the transmitted data into two categories: compressed feature values for efficient communication during active capturing, and original uncompressed image data for comprehensive analysis during suspension periods. The original image data retains all processing parameters and quality information, enabling full adaptability for adjusting image processing parameters when needed, while the compressed data provides rapid communication capability.
Solution Approach 2:
The patent performs preliminary compression of image data to extract feature values during the image capturing period, enabling efficient real-time transmission. The original uncompressed image data is preserved and transmitted during the suspension period, serving as a preliminary prepared resource that contains all necessary information for parameter adjustment and detailed defect analysis without requiring re-capturing.
3Quantity of substance
If only processed feature values are transmitted, then network load is reduced, but defect analysis capability is insufficient
Solution Approach 1:
The patent segments the data transmission strategy into two complementary streams: compressed feature values transmitted during image capturing for real-time monitoring with minimal network load, and original uncompressed image data transmitted during image capturing suspension periods for comprehensive defect analysis. This segmentation ensures that both real-time monitoring efficiency and detailed defect analysis precision are maintained through appropriate data transmission at different operational phases.
Solution Approach 2:
The patent implements periodic transmission of original image data during image capturing suspension periods, complementing the continuous transmission of compressed feature values. This periodic full-data transmission ensures that detailed defect analysis capability is maintained while minimizing overall network load, as the high-volume original data is transmitted only when the image capturing apparatus is not actively capturing, utilizing otherwise idle network capacity.
4Measurement precision
If original image data is transmitted continuously, then analysis accuracy is improved, but communication cost increases
Solution Approach 1:
The patent segments the transmission of original image data to occur only during image capturing suspension periods, rather than continuously. During active image capturing, only compressed feature values are transmitted. This segmentation maintains analysis accuracy by ensuring original image data is available when needed, while dramatically reducing communication energy cost by limiting full-data transmission to periods when the image capturing apparatus is idle.
Solution Approach 2:
The patent implements periodic transmission of original image data synchronized with the image capturing suspension periods. This periodic action ensures that high-accuracy analysis data is transmitted at regular intervals when the system is not actively capturing images, maintaining measurement precision while minimizing communication energy consumption by avoiding continuous high-bandwidth transmission.
Data Source
AI summary
An image capturing apparatus includes an image capturing portion, a controller to perform image processing to obtain a feature value from image data, and a storage device to accumulate the image data. In an image capturing period of capturing an image of the target object by the image capturing portion, the controller transmits a result of the image processing to a data management server while accumulating the captured image data the storage device, while in an image capturing suspension period of not performing image capturing, the controller transmits the image data accumulated in the storage device to the data management server.