Vehicle Recording Device Mixed Data Bus Integration
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Solution Overview
Problem
Existing accident data recorders struggle to effectively correlate and store image data with vehicle data in a time-sensitive and tamper-proof manner, which is crucial for accurate accident reconstruction and analysis.
Innovation Solution
A recording device that integrates an optical image generating sensor with a signal processor and communication processor to combine image and vehicle data into a mixed data format within the vehicle's bus system, using a byte-oriented format for CAN-bus, allowing for physical correlation and efficient storage, and utilizing a storage medium like flash memory for durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If image data and vehicle data are stored separately, then data storage is simple, but time correlation between image data and vehicle data is difficult to ensure
Solution Approach 1:
The patent combines image data and vehicle data into a single mixed data structure that is transmitted through the vehicle bus system. This merging allows both data types to be correlated in time while maintaining a unified storage approach, resolving the contradiction between ensuring time correlation and keeping the storage structure simple.
2Loss of information
If all image data is stored, then complete accident reconstruction is possible, but data volume is too large for efficient storage and processing
Solution Approach 1:
The patent extracts only the most relevant portions of image data and vehicle data that are necessary for accident reconstruction. By selecting and storing only critical information rather than all available data, the system maintains completeness for accident analysis while significantly reducing the overall data volume for efficient storage and processing.
Solution Approach 2:
The patent segments image data and vehicle data into distinct but correlated components within a mixed data structure. This segmentation allows the system to process and store different data types separately while maintaining their temporal relationships, enabling efficient storage of only the necessary portions of each data type.
3Adaptability or versatility
If data is stored in a format suitable for vehicle bus systems, then integration with vehicle systems is easy, but image data processing capability is reduced
Solution Approach 1:
The patent changes the parameter representation of image data to fit within the constraints of vehicle bus systems. By converting image data into a format that uses vehicle bus communication protocols and data structures, the system achieves easy integration with vehicle systems while preserving the essential information needed for accurate image data processing and accident reconstruction.
Data Source
AI summary
A recording device for capturing and processing image data in a vehicle is proposed. The recording device comprises an optical image generating sensor and an image processor for processing image data and a communication processor for bidirectional communication with the vehicle. The image data and additional vehicle data is imaged into the data structure of the vehicle bus system together as mixed data.