Parking Event Detection Control for Low-Power Dash Cam Recording
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Solution Overview
Problem
Existing motion detection modules in dash cams continue to consume power unnecessarily, especially in environments with little movement, reducing battery life and parking surveillance time.
Innovation Solution
An event detection module control system that adjusts power consumption based on the vehicle's parking environment, including analyzing the presence of objects, their distance, and movement, to dynamically change detection settings and reduce power usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the event detection module continuously operates to ensure parking surveillance, then the detection reliability is improved, but the power consumption increases
Solution Approach 1:
The event detection module dynamically adjusts its operating state based on environmental conditions. When motion is detected or objects are close to the vehicle, the module operates at full resolution. When no motion is detected or objects are far away, the module switches to a low-power state or reduces detection resolution, thereby maintaining surveillance reliability while reducing unnecessary power consumption.
Solution Approach 2:
The system changes operational parameters of the event detection module based on parking environment analysis. The detection resolution, sampling frequency, and power supply state are adjusted according to factors such as presence of nearby objects, distance to objects, and detected motion, optimizing the balance between surveillance effectiveness and power consumption.
2Measurement precision
If the motion detection module operates at high resolution to accurately detect objects, then the detection precision is improved, but the power consumption increases
Solution Approach 1:
The system applies different detection qualities to different spatial regions. When an object is detected at a certain distance, the module maintains high detection precision for that specific region while reducing or suspending detection in other regions, thereby maintaining necessary detection precision while reducing overall power consumption.
Solution Approach 2:
The event detection module performs partial detection actions based on environmental conditions. Instead of continuously operating at full resolution, the module selectively activates high-resolution detection only when objects are within a critical distance or motion is detected, using lower resolution or suspended detection otherwise, thus reducing unnecessary power consumption while maintaining adequate detection precision.
3Reliability
If the event detection module operates in remote locations with little movement, then the surveillance coverage is maintained, but the power is consumed unnecessarily
Solution Approach 1:
In remote locations with little movement, the event detection module switches from continuous operation to periodic or on-demand operation. The module activates detection only when triggered by specific events or at scheduled intervals, maintaining surveillance coverage while eliminating unnecessary continuous power consumption in low-activity environments.
Data Source
AI summary
An event detection module control system in a parking recording mode for reducing power consumption includes a camera including an imaging unit capturing a video, an event detection unit detecting an event, a parking environment analysis unit analyzing a parking environment, and a camera connector interfacing with a main body; and the main body including an image processing unit receiving and processing the video captured by the imaging unit, a power supply unit supplying power for an operation of the event detection module control system, a controller controlling an operation of the power supply unit, and a main body connector interfacing with the camera, wherein, in the parking recording mode, the controller analyzes the video captured by the imaging unit through the parking environment analysis unit and controls power of the imaging unit and the event detection unit to be turned on or off according to a parking environment of the vehicle.