Surveillance Camera Wake-Up Method Using Low-Power Image Acquisition
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Solution Overview
Problem
Surveillance cameras frequently wake up unnecessarily due to incorrect detection of intrusion targets, leading to accelerated battery charge consumption and increased battery replacement frequency.
Innovation Solution
Implementing a wake-up method that controls the image sensor to enter a low-power acquisition mode upon detection, acquiring multiple frames to determine if the target is a pedestrian, and switching to a normal mode only when confirmed, thereby reducing power consumption and improving accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the surveillance camera wakes up immediately upon detection sensor triggering, then the response speed is improved, but the wake-up accuracy deteriorates due to false detection of pedestrians and animals
Solution Approach 1:
The patent applies preliminary action by having the image sensor capture images in advance when the detection sensor triggers, before fully waking up the surveillance system. This allows the system to pre-process visual information to verify whether the detected target is indeed a surveilled target, thereby improving wake-up accuracy while maintaining responsive operation.
2Manufacturing precision
If the surveillance camera uses high-power image acquisition mode continuously, then the image quality is improved, but the battery charge consumption increases
Solution Approach 1:
The patent applies dynamics by making the image acquisition mode adjustable and context-dependent. The system dynamically switches between low-power mode (when no intrusion is detected) and normal-power mode (when a surveilled target is confirmed), optimizing the balance between image quality and energy consumption based on real-time detection results.
Solution Approach 2:
The patent changes the operational parameters of the image sensor by switching between different acquisition modes with different power consumption characteristics. This parameter change allows the system to adapt its energy consumption level to the current surveillance situation, reducing battery charge consumption when full-resolution imaging is not necessary.
3Reliability
If the surveillance camera wakes up frequently to check for intrusion targets, then the detection coverage is improved, but the battery replacement frequency increases
Solution Approach 1:
The patent applies feedback by using the image sensor's detection results to feedback into the wake-up decision process. The system continuously monitors the surveillance region through the image sensor and uses this feedback information to determine whether a genuine intrusion has occurred, thereby maintaining reliable detection coverage while reducing unnecessary wake-ups that would drain the battery.
Data Source
AI summary
Provided are a wake-up method and device for a surveillance camera, a surveillance camera and a medium. The surveillance camera includes a detection sensor and an image sensor. The wake-up method for a surveillance camera includes: in response to the detection sensor detecting presence of an intrusion target in a surveilled region, controlling the image sensor to enter a first image acquisition mode; controlling the image sensor in the first image acquisition mode to acquire at least two frames of surveillance images; determining whether the intrusion target is a surveilled target according to the at least two frames of surveillance images; and in response to determining that the intrusion target is a surveilled target, switching the image sensor from the first image acquisition mode to a second image acquisition mode, and controlling the image sensor in the second image acquisition mode to acquire a surveillance image having the surveilled target.