Imaging Apparatus Power Supply Switching for PoE Constraints
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Solution Overview
Problem
Conventional monitoring cameras equipped with pan and tilt functions using Power over Ethernet (PoE) face challenges in meeting diverse power supply environments, leading to limited camera performance due to insufficient power capacity, and existing solutions compromise on picture quality or functionality to reduce power consumption.
Innovation Solution
An imaging apparatus with a power supply system that detects and switches between AC adapter and PoE power sources, allowing for adaptive control modes based on available power, enabling maximum performance by selectively enabling or disabling camera functions according to power availability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If PoE power supply is used to simplify wiring and installation, then ease of installation is improved, but power capacity becomes insufficient for multifunctional cameras
Solution Approach 1:
The camera dynamically adjusts its operational mode based on detected power availability. When PoE power is detected, the camera operates in a restricted mode with limited functions. When AC adapter power is detected, the camera switches to full-performance mode with all functions enabled, including pan-tilt and high-resolution video processing.
Solution Approach 2:
The system changes operational parameters based on power source detection. The control unit detects the power supply type and adjusts camera parameters accordingly, such as enabling or disabling specific functions, adjusting video resolution, and controlling motor-driven features like pan-tilt to match available power capacity.
2Adaptability or versatility
If all camera functions are enabled simultaneously to maximize performance, then camera functionality is improved, but power consumption exceeds PoE supply capacity
Solution Approach 1:
The camera implements partial action by selectively enabling only those functions that are necessary and feasible given the available power capacity. When PoE power is detected, non-essential functions are disabled or operated at reduced capacity, while core functions like video capture and network communication remain active.
Solution Approach 2:
The functional configuration of the camera is dynamic rather than static. The control unit continuously monitors power availability and adjusts the set of active functions accordingly, allowing the camera to adapt its functionality to match power supply conditions in real-time.
3Power
If power consumption is reduced to fit PoE limits, then power compatibility is improved, but picture quality and operational performance deteriorate
Solution Approach 1:
The camera achieves multi-functionality by supporting multiple power supply modes (PoE and AC adapter). This universality allows the same camera hardware to deliver different performance levels depending on the power source, ensuring broad compatibility while maintaining the capability for high-performance operation when sufficient power is available.
Solution Approach 2:
The camera dynamically adjusts its operational characteristics based on power availability. When AC adapter power is detected, the camera can operate at full performance with high picture quality settings, advanced image processing, and all functions enabled, eliminating the need to compromise quality for power compatibility.
Data Source
AI summary
An imaging apparatus includes an imaging unit configured to convert an object image formed by an imaging optical system into an electrical signal, a power supply unit capable of being supplied with power from first and second power supply systems, and a control unit configured to cause the imaging unit to operate in different control modes according to whether power is supplied from the first power supply system or the second power supply system.