Vehicle Camera Motion Detection Control via Wiper Status
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Solution Overview
Problem
The existing driving image recording devices experience a motion artifact effect due to the activation of the motion detection function, particularly when the wiper is in operation, leading to incorrect color correction of fast-moving objects and flickering effects, especially with LED traffic lights.
Innovation Solution
A control method for a driving image recording device that dynamically adjusts the motion detection setting of the camera module based on the status of the wiper and the presence of intersections or traffic lights, using GPS information and wiper operation signals to determine when to turn the motion detection on or off, and adjusting settings according to the wiper's operation cycle and time counts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the motion detection function is activated to correct fast-moving objects, then color accuracy of moving objects is improved, but motion artifact effects occur on wiper images
Solution Approach 1:
The motion detection setting is dynamically adjusted based on wiper operation state. The controller monitors wiper signals and automatically switches motion detection between ON and OFF states, making the system adaptable to different operating conditions rather than using a fixed setting
Solution Approach 2:
The system uses feedback from wiper operation signals to control the motion detection function. When the wiper is detected to be operating, the system receives this feedback and automatically disables motion detection to prevent artifact effects, creating a closed-loop control system
2Object-generated harmful factors
If the motion detection function is deactivated to avoid wiper artifact effects, then image clarity is improved, but color correction of fast-moving objects fails
Solution Approach 1:
The motion detection function transitions from a static setting to a dynamic one that changes based on real-time wiper operation status. The system adapts its behavior by enabling motion detection only when the wiper is not operating, optimizing performance for different conditions
Solution Approach 2:
The motion detection function operates periodically based on wiper cycles. During wiper operation periods, motion detection is disabled; during non-wiper periods, motion detection is enabled, creating a periodic activation pattern that avoids conflicts with wiper motion
3Reliability
If motion detection is continuously enabled to handle all fast-moving objects, then overall image quality is improved, but processing complexity increases
Solution Approach 1:
The system performs preliminary detection of wiper operation state before applying motion detection processing. By checking the wiper signal in advance and pre-determining whether motion detection should be active, the system avoids unnecessary processing complexity during wiper operation
Solution Approach 2:
The system extracts and separates the wiper operation detection function from the main image processing flow. By independently monitoring the wiper signal and using it to control motion detection activation, the system simplifies the overall processing architecture rather than adding complexity
Data Source
AI summary
A driving image recording device includes a camera module for monitoring the surroundings of a vehicle, a first memory for storing an image transmitted from the camera module, a second memory for storing a computer program that controls storage of the image; and a controller including a processor for executing the computer program, where the processor determines whether a wiper of the vehicle is in an on-state through execution of the computer program and determines whether to change a motion detection setting of the camera module according to this determination.