Detecting Device Dual Light Source Reflective Distance Adjustment
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Solution Overview
Problem
Existing detection devices cannot change the object detectable distance without altering the infrared light output intensity, which limits their flexibility and accuracy in various detection scenarios.
Innovation Solution
The device employs a combination of a first light source emitting infrared light and a second light source emitting visible light of a different wavelength, with a reflecting section to adjust the detectable distance by altering the reflectance and optical path length, allowing the object detectable distance to be changed without modifying the infrared light output intensity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the infrared light output intensity is changed to adjust the detectable distance, then the detection range is extended, but the detection accuracy deteriorates due to interference between infrared and visible light
Solution Approach 1:
The patent divides the light emission function into two independent segments: a first light source for infrared light and a second light source for visible light. This segmentation allows independent control of each light source, enabling adjustment of detectable distance through visible light without affecting infrared light output intensity, thus maintaining detection accuracy.
Solution Approach 2:
The patent introduces a reflecting section as an intermediary element that reflects visible light from the second light source onto the object. This intermediary mechanism enables the visible light to serve as a mediator for adjusting the detectable distance without directly interfering with the infrared light detection path, thereby resolving the interference problem.
2Adaptability or versatility
If only a single light source is used, then the device complexity is reduced, but the adaptability to different detection scenarios is limited
Solution Approach 1:
The patent implements multi-functionality by equipping the detecting device with both a first light source for infrared light and a second light source for visible light. The first light source enables standard infrared detection, while the second light source with the reflecting section enables adjustment of the detectable distance. This multi-functional design enhances adaptability to different detection scenarios without requiring multiple separate devices.
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
This approach enables flexible adjustment of the detectable distance while maintaining consistent infrared light output, enhancing detection accuracy and avoiding false positives due to interference between infrared and visible light.
Implementation Method 1
a first light source configured to emit infrared light in the detection target space
Implementation Method 2
a reflecting section provided in the direction in which the second light source emits the second light and configured to reflect the second light
Implementation Method 3
a light receiver configured to receive reflected infrared light emitted by the first light source and reflected by the object, and to receive radiating infrared light radiating from the object
Data Source
AI summary
In a detecting device, infrared light is emitted by a first source in a detection target space; second light of a wavelength different from the infrared light is emitted by a second source in a direction different from a direction of the infrared light being emitted by the first source. A reflecting section provided in the direction of the second light being emitted reflects the second light. A light receiver receives infrared light emitted by the first source and reflected by the object, and receives infrared light radiating from the object as a result of the object being irradiated with the infrared light emitted by the first source and being irradiated with the second light emitted by the second source and reflected by the reflecting section. A detector detects the object based on the infrared light received by the light receiver.