Rotating Surveillance Camera Wireless Power Direction Control
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Solution Overview
Problem
The challenge in deploying wireless power transmission for surveillance cameras is the difficulty in applying magnetic induction for remote camera devices and the need for mid-range distance charging while ensuring safety for humans, as existing technologies like magnetic resonance and electromagnetic waves pose safety risks.
Innovation Solution
A surveillance camera system that includes a rotating body with a wireless power transmitter and communicator, which adjusts the transmission direction and power based on signal strength changes to efficiently transfer power while detecting objects in the path, using technologies like magnetic induction, resonance, or electromagnetic waves, and incorporating object detection to ensure safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If magnetic induction technology is used for wireless power transmission, then power transmission efficiency is improved, but transmission distance is limited and cannot reach remote camera devices
Solution Approach 1:
The patent transitions from magnetic induction to magnetic resonance wireless power transmission, changing the operating parameters (frequency, resonance condition) to enable mid-range distance charging while maintaining reasonable power transmission efficiency
Solution Approach 2:
The system dynamically adjusts transmission power and direction based on real-time signal strength feedback and object detection, allowing the power transmission to adapt to varying distances and environmental conditions
2Length of stationary object
If magnetic resonance or electromagnetic wave technology is used for mid-range distance charging, then transmission distance is improved, but safety issues for humans arise
Solution Approach 1:
The system continuously monitors signal strength changes during rotation and detects objects in the transmission path, using this feedback to adjust or stop power transmission when safety risks are detected, thereby mitigating harmful effects on humans
Solution Approach 2:
The patent uses object detection technology to identify potential safety hazards, converting the detection capability into a protective mechanism that prevents harmful exposure by adjusting transmission parameters or stopping power transmission when objects are detected
3Adaptability or versatility
If a plurality of network cameras are deployed to monitor target area, then monitoring effectiveness is improved, but power line requirements increase
Solution Approach 1:
The patent implements a universal wireless power transmission system that can simultaneously charge multiple camera devices without requiring individual power lines for each device, reducing overall system complexity while maintaining the ability to deploy multiple cameras for effective monitoring
Solution Approach 2:
The system replaces the mechanical power delivery infrastructure (power lines) with a wireless electromagnetic field-based power transmission system, eliminating the need for physical wiring to each camera device while enabling flexible deployment of multiple units
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 system enables efficient wireless charging of surveillance cameras over mid-range distances, improving usability and reducing safety risks for humans by dynamically adjusting transmission power and direction, thereby enhancing both efficiency and safety.
Implementation Method 1
magnetic induction technology is hard to apply for the camera device remotely deployed in relatively long distances
Implementation Method 2
other technologies that can be applied to mid-range distance charging such as wireless power transmission based on magnetic resonance or electromagnetic wave
Implementation Method 3
rotate the rotating body in a panning direction by the rotation driver
Implementation Method 4
a wireless communicator configured to receive a wireless communication signal from an external device
Data Source
AI summary
The present document discloses a camera device comprising a camera sensor, a wireless communication unit configured to receive a wireless communication signal from an external device, a rotating body configured to be rotated together with the camera sensor and the wireless communication unit, a rotation driving unit configured to rotate the rotating body, a wireless power transmitter configured to transfer wireless powers to the external device, and a control unit configured to rotate the rotating body in a panning direction by the rotation driving unit, estimate direction information of the external device at least partially based on a change of a received signal strength of a wireless communication signal caused by the rotation of the rotating body, determine a transmission direction of a wireless power signal for the external device based on the direction information of the external device, and transmit the wireless power signal in the transmission direction.