Parking-Mode Video Recording Control for Battery-Limited Vehicles
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Solution Overview
Problem
Conventional vehicular recorders with parking-mode recording functions have limited operational time due to battery power constraints and lack of video data recording before and at the time of event detection, hindering situational understanding.
Innovation Solution
A vehicular recording controller apparatus that determines the vehicle's position relative to an external camera's field of view to adjust the parking-mode recording function between a power-efficient mode and a mode that captures video data before and after event detection, ensuring appropriate recording regardless of battery charge.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If the vehicular recorder operates continuously to capture video data before and after event detection, then the completeness of video data recording is improved, but the power consumption increases and operational time decreases
Solution Approach 1:
The system performs preliminary actions by pre-recording video data for a predetermined period before an event is detected. The video capturing unit starts recording before the event detection unit detects an event, ensuring that video data from the time of event detection is included in the recorded data. This preliminary recording action resolves the contradiction by capturing complete event context without requiring continuous recording.
Solution Approach 2:
The system dynamically adjusts its recording operation based on event detection status. When no event is detected, the video capturing unit operates in a low-power state or stops recording. When an event is detected, the system activates recording for a predetermined period. This dynamic operation mode reduces power consumption while ensuring complete video data capture when needed.
2Reliability
If the vehicular recorder uses battery power for parking-mode recording, then the recording function is maintained, but the operational time is limited by battery charge amount
Solution Approach 1:
The system employs periodic action by activating the video capturing unit only during specific periods when events are detected or pre-recording is required, rather than operating continuously. The recording function operates intermittently - staying inactive during normal parking periods and activating only when event detection triggers a recording cycle. This periodic operation extends battery life while maintaining recording reliability.
Solution Approach 2:
The system changes operational parameters based on conditions. The recording parameter transitions from a continuous state to an event-triggered state. When an event is detected, the system changes the recording duration parameter to a predetermined period, ensuring complete event coverage. This parameter change allows the system to maintain reliable recording function while significantly reducing overall power consumption and extending operational time.
3Use of energy by moving object
If the recording starts only after event detection, then the power consumption is reduced, but the video data before and at the time of event detection is not recorded
Solution Approach 1:
The system performs preliminary recording actions by starting the video capturing unit before event detection occurs. The recording period is set to include a predetermined time before event detection, ensuring that video data from the time of event detection is captured. This preliminary action resolves the information loss problem while maintaining power efficiency through event-triggered operation.
Data Source
AI summary
A vehicular recording controller apparatus includes: a video data acquiring unit that acquires video data captured by a camera capturing a video of the setting around a vehicle; an event detecting unit that detects an event on the vehicle; a position determining unit that determines whether the position of the vehicle is within the field of view of an external camera making a video available for use by a user of the vehicle; and a recording function control unit that controls a parking-mode recording function for storing video data captured by the camera when the event detecting unit detects an event while the vehicle is parked.