Event Recording Apparatus Acceleration Threshold Segmentation
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Solution Overview
Problem
Dashboard cameras struggle to accurately record events with small acceleration, making it difficult for users to manually capture accidents due to unfamiliarity with the device or emotional distress during incidents.
Innovation Solution
A recording apparatus equipped with a control unit, camera, recording unit, operation unit, display unit, sensor, and GPS reception unit, which detects acceleration thresholds to automatically store event data for predetermined periods, ensuring that both first and second-level events are recorded without user intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the acceleration threshold for event detection is set high to avoid false detection during normal traveling and braking, then false detection is reduced, but accidents with small acceleration cannot be detected
Solution Approach 1:
The patent segments event detection into two distinct categories: automatic event detection for high acceleration values and manual event registration for low acceleration values. This segmentation allows the system to use different detection strategies for different acceleration levels, resolving the contradiction between avoiding false detection and detecting all accidents.
Solution Approach 2:
The system provides self-service through automatic event detection for significant acceleration events, eliminating the need for user intervention in most cases. For minor events, the system enables users to manually register events through simple operations, making the system adaptable to different user capabilities and event types.
2Measurement precision
If manual event registration is required for small acceleration accidents, then detection sensitivity is improved, but user operation difficulty increases when users are unfamiliar or distressed
Solution Approach 1:
The patent introduces an intermediary mechanism where the system automatically detects and registers events for the user when acceleration exceeds a threshold. This intermediary automatic detection system bridges the gap between the user's inability to manually register events during distress and the need for accurate event capture.
Solution Approach 2:
The system performs preliminary automatic detection and registration of events based on acceleration thresholds before user intervention is needed. This preliminary action ensures that significant events are captured automatically, reducing the burden on users during actual accident situations.
3Ease of operation
If automatic event detection is implemented for all acceleration levels, then ease of operation is improved, but false detection during normal traveling increases
Solution Approach 1:
The patent applies local quality by setting different detection characteristics for different acceleration levels. High acceleration events trigger automatic detection with high sensitivity, while low acceleration events require manual registration, allowing the system to optimize detection parameters locally for each event type rather than using a uniform approach.
Solution Approach 2:
The system changes the detection parameter (acceleration threshold) based on the event type and automatically adjusts the registration mode accordingly. This parameter change strategy allows the system to maintain high automation for significant events while avoiding false detection during normal traveling conditions.
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
The apparatus effectively stores event data for both small and significant acceleration events, preventing data overwrite and ensuring critical accident footage is preserved without user error or delay.
Implementation Method 1
a sensor 250 and arranged to detect acceleration of the vehicle
Data Source
Figure 1
Figure 2~2(b)
Figure 3~3(c)
AI summary
A recording apparatus (10) includes a photographed data acquisition unit that acquires photographed data of surroundings of a moving body, an event detection unit (127) that determines, when acceleration of a first threshold or greater applied to the moving body is detected, that a first level event has occurred, while when acceleration of a second threshold or greater is detected, determine that a second level event has occurred, in which the second threshold is greater than the first threshold, and a recording control unit (123) that, in the detection of the first level event, stores the photographed data as first level event data, while in the detection of the second level event, stores the photographed data as second level event data, and when the first level event data is reproduced within a first period from the occurrence of the first level event, stores the first level event data as the second level event data.