Vehicle Video Recording Wake-Up Control for False Impact Filtering
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Solution Overview
Problem
Current vehicle video recording devices often record videos unnecessarily, leading to rapid memory aging and user dissatisfaction due to false impact detections, especially when parked, and unnecessary data transmission.
Innovation Solution
Implement a vehicle motion detection system to determine if an external object is within a specific area and a motion sensor to detect potential impacts, allowing controlled event recording only when actual impacts occur, thereby optimizing memory usage and reducing unnecessary data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If impact sensor is used to detect impacts and trigger recording, then recording can be activated when impacts occur, but false detections occur when no actual impact is present, causing unnecessary recording and memory deletion
Solution Approach 1:
The patent combines motion sensor detection with impact sensor detection to create a composite detection system. The motion sensor detects external objects and their movement trajectories, while the impact sensor detects actual impact events. Both detection results are integrated by the controller to make recording decisions, reducing false positives from either sensor alone.
Solution Approach 2:
The controller acts as an intermediary between the motion sensor and impact sensor, and between the impact sensor and the camera recording system. It processes detection results from both sensors, applies judgment logic to determine whether recording should be triggered, and controls the camera accordingly, preventing false activation.
2Reliability
If recording is triggered by impact detection, then impact events can be captured, but memory ages faster due to frequent recording and deletion cycles
Solution Approach 1:
The motion sensor performs preliminary detection of external objects and their movement patterns before an actual impact occurs. This preliminary action allows the system to pre-judge whether an impending impact warrants recording, enabling selective activation of the camera only when necessary, thus reducing unnecessary recording cycles.
Solution Approach 2:
The system uses feedback from both motion sensor and impact sensor to control the recording process. The controller continuously monitors detection results and adjusts recording activation accordingly, creating a closed-loop system that prevents unnecessary recording and extends memory lifespan.
3Loss of information
If connected car service transmits impact notifications and videos, then users are informed of impact events, but unnecessary data transmission occurs when impacts are false detections
Solution Approach 1:
The motion sensor performs preliminary detection and trajectory analysis before an impact occurs. This allows the system to pre-judge whether an impact is likely to be genuine or false, and only activates the connected car service transmission when the judgment confirms a real impact, preventing unnecessary data transmission.
4Reliability
If motion sensor detects external objects and triggers wake-up command, then recording can be prepared for actual impacts, but may increase power consumption
Solution Approach 1:
The system dynamically adjusts its operational state based on detection results. The camera and connected car service operate in different power states (sleep, standby, active) depending on whether motion is detected and whether impact conditions are met. This dynamic state management reduces overall power consumption while maintaining recording readiness when needed.
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
This solution ensures efficient memory usage by recording only when actual impacts happen, preventing false detections and minimizing user inconvenience and data fees.
Implementation Method 1
a motion sensor configured to detect a motion of an external object around the vehicle
Implementation Method 2
an impact sensor configured to detect an impact on the vehicle
Data Source
AI summary
Disclosed is a video recording device for a vehicle that may receive motion information of an external object from a motion sensor, and when the external object is detected within a first area or when the external object is determined to enter the first area from a second area within a set time, transmit a wake-up command to a camera and prepare for event recording. When an impact is detected by an impact sensor, the video recording device may determine whether at least one of a distance, a speed, or a direction of the external object satisfies a condition that may cause an impact on the vehicle, determine whether the external object is within a set area in a range of the motion sensor, and determine whether to perform the event recording, thereby storing a video (e.g., only) when there is an actual impact by the external object.