Optical Pest Repeller Safety via Dual-Light Detection
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Solution Overview
Problem
Existing optical pest repellers, such as those using high-power light sources for mosquito elimination, pose safety risks due to inadequate safety measures when a human body enters the sensing range, particularly for families with children, as they may cause burns from high-power light exposure.
Innovation Solution
An optical pest repeller design featuring at least two first light sources with low energy density, photosensitive members, and a processing unit that controls a higher energy density second light source. The system determines if a human body or pest is within the sensing range, activating the second light source only when the pest is present and deactivating it before human exposure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a high-power light source is used to eliminate mosquitoes, then pest elimination effectiveness is improved, but safety risk increases due to potential human body burns
Solution Approach 1:
The system performs preliminary detection using low-power first light sources and photosensitive members to identify the presence and position of pests or human bodies before the high-power second light source is activated. This advance detection ensures the high-power light is only turned on when a pest is detected and no human body is in the path, preventing burns while maintaining effective pest elimination.
Solution Approach 2:
The photosensitive members act as intermediaries between the light sources and the processing unit, converting light blockage into electrical signals that enable the system to distinguish between pests and human bodies. This intermediary detection mechanism allows safe activation of the high-power light source only when appropriate.
2Object-affected harmful factors
If a low-power light source is used for detection, then safety is improved, but pest elimination capability deteriorates
Solution Approach 1:
The system divides the light source function into two segments: first light sources with low power density for safe detection and positioning, and a second light source with high power density for pest elimination. This segmentation allows each light source to be optimized for its specific function while maintaining overall system safety and effectiveness.
Solution Approach 2:
The low-power first light sources perform preliminary detection and positioning of targets before the high-power second light source is activated. This preliminary action ensures that when the high-power light is turned on, it is already positioned correctly to eliminate the pest, maintaining elimination capability while ensuring safety during the detection phase.
3Speed
If the high-power light source is activated immediately upon detection, then pest elimination speed is improved, but safety measure effectiveness deteriorates
Solution Approach 1:
The system performs preliminary detection and positioning using low-power light sources before activating the high-power light source. This preliminary action is completed quickly by the fast-response photosensitive members, allowing the high-power light to be activated immediately after confirmation of pest presence without human body risk, thus maintaining elimination speed while ensuring safety.
Solution Approach 2:
The photosensitive members continuously monitor the sensing range and provide real-time feedback to the processing unit about light blockage patterns. This feedback mechanism allows the system to quickly determine whether a detected object is a pest or human body and respond accordingly, maintaining fast response time while ensuring safety through continuous monitoring.
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
Significantly improves safety by ensuring the high-energy light source is turned off before a human body enters the sensing range, preventing potential burns and enhancing the effectiveness of pest elimination.
Implementation Method 1
When the first light ray emitted by the first light sources is blocked in a light-shading region in the sensing range, the processing unit obtains a position corresponding to the light-shading region and a light-shading area according to light-sensing conditions of the first photosensitive members
Implementation Method 2
The second light source emits a second light ray. An energy density of the second light ray is greater than the human body tolerance valve
Data Source
AI summary
An optical pest repeller includes at least two first light sources, at least two first photosensitive members, at least one second light source, and a processing unit. The second light source is located between the first photosensitive members in a second direction. By comparing a light-shading area with a threshold value, no matter which side of the second direction a human body enters by mistake, the second light source can be turned off in time. The safety of use of the optical pest repeller is improved greatly.