Vehicle Video Recording Selective Camera Activation
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Solution Overview
Problem
Vehicle video recording apparatuses face issues with memory device lifespan due to frequent erasing and difficulty in searching key videos amidst vast data, leading to potential loss of critical images.
Innovation Solution
A vehicle video recording apparatus with multiple cameras and a control unit that selectively activates cameras based on vehicle status signals and distance detection, storing videos dynamically in a storage unit to prevent memory overflow and ensure key events are recorded.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If all cameras are kept on for continuous recording, then driving safety is improved through comprehensive video coverage, but the memory device lifespan is greatly shortened due to frequent erasing actions
Solution Approach 1:
The system dynamically adjusts camera recording status based on detected driving events. The control unit receives signals from sensors (accelerometer, gyroscope, steering angle sensor) and selectively activates only relevant cameras when specific events occur, rather than maintaining continuous recording from all cameras. This dynamic adaptation resolves the contradiction by enabling comprehensive safety coverage only when needed.
Solution Approach 2:
Instead of continuous recording from all cameras, the system implements periodic/event-triggered recording. The control unit periodically monitors sensor inputs and activates cameras only during specific periods when driving events are detected (e.g., sudden braking, sharp turns, collisions). This periodic action pattern extends memory device lifespan while maintaining safety monitoring capability.
2Loss of information
If continuous recording from multiple cameras is maintained, then complete video coverage is achieved, but the storage unit fills up quickly making it difficult to search for key videos
Solution Approach 1:
The system extracts and isolates only the critical video segments corresponding to detected driving events. When sensors detect specific events (acceleration, deceleration, steering movements), the control unit selectively records video from relevant cameras during these event periods. This extraction approach eliminates unnecessary video data, preventing storage unit overflow and making key video search efficient.
Solution Approach 2:
The system applies different recording qualities and activation states to different cameras based on local event conditions. Rather than uniform continuous recording, each camera is selectively activated only when its field of view captures relevant event information. This local quality differentiation optimizes storage usage while maintaining complete coverage of critical events.
3Productivity
If frequent data erasing is performed to make room for new recordings, then continuous recording capability is maintained, but previously stored critical images may be removed
Solution Approach 1:
The system performs preliminary identification of critical video segments through sensor-based event detection before recording. By anticipating which moments will be important (through acceleration, deceleration, steering signal detection), the system pre-identifies and preserves these segments in storage. This preliminary action ensures critical images are protected from erasure while maintaining continuous recording capability for new events.
Data Source
AI summary
A vehicle video recording apparatus has multiple cameras mounted on a car, a video processing unit electronically connected to the cameras, a storage unit for storing videos output from the cameras, and a control unit. The control unit has a signal detecting module for receiving vehicle status signals, a distance detecting module for sensing a distance between the car and an object, an output module for outputting warning signals, and a central control module for controlling the cameras based on the vehicle status signals. The vehicle video recording apparatus properly selects and activates the camera to record images around the car to enhance the driving safety.