Wearable Camera Pointer Irradiation Power Control
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Solution Overview
Problem
Wearable cameras face challenges in controlling power consumption of their pointer irradiation units, especially outdoors where increased brightness is needed to be visually recognized, leading to reduced battery life and potential heat issues, without manually turning off the pointer, which is inconvenient and inefficient.
Innovation Solution
The wearable camera includes a processor and memory that control power supply to the irradiation unit based on the state of the captured image, automatically turning off the pointer when unnecessary, adjusting power based on image brightness, and using temperature detection to manage continuous irradiation time, thereby optimizing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the output of the pointer is increased to enable visual recognition outdoors, then the visibility of the pointer is improved, but the power consumption is increased and battery life is shortened
Solution Approach 1:
The patent applies dynamics by making the pointer output adjustable rather than fixed. The control unit dynamically changes the pointer's brightness level based on detected ambient light conditions, allowing the system to optimize between visibility and power consumption in different environments
Solution Approach 2:
The patent changes the parameter of pointer output intensity based on ambient light conditions. The control unit adjusts the pointer's brightness parameter according to detected sunlight levels, enabling visual recognition in bright conditions while reducing power consumption when full brightness is not needed
2Illumination intensity
If the output of the pointer is increased to enable visual recognition, then the visibility of the pointer is improved, but the temperature at the pointer and camera increases
Solution Approach 1:
The system dynamically adjusts pointer output based on ambient conditions and thermal state. The control unit monitors and adjusts the pointer's brightness to maintain visibility while preventing excessive temperature rise that would require cooling mechanisms
3Use of energy by moving object
If the wearer manually turns off the pointer to reduce power consumption, then the power consumption is reduced, but the ease of operation is deteriorated
Solution Approach 1:
The system performs self-service by automatically managing the pointer's operation based on detected conditions. The control unit autonomously adjusts or turns off the pointer based on ambient light levels and imaging requirements, eliminating the need for manual user intervention while maintaining power efficiency
4Temperature
If a cooling fan or increased surface area is mounted to radiate heat, then the temperature control is improved, but the size of the wearable camera is increased
Solution Approach 1:
The patent converts the potential harm of heat generation into a benefit by using intelligent control to prevent excessive heating in the first place. By dynamically adjusting pointer output based on ambient conditions, the system avoids generating unnecessary heat that would require cooling solutions, thus maintaining a compact form factor
Data Source
AI summary
A wearable camera includes an imaging unit, an irradiation unit that radiates light indicating an imaged portion to be imaged by the imaging unit, a processor, and a memory that stores instructions to be executed by the processor, wherein, when the stored instructions are executed, the wearable camera functions as a control unit that controls power to be supplied to the irradiation unit, and wherein the control unit controls the power to be supplied to the irradiation unit based on a state of an image acquired by the imaging unit.