Infrared Receiver Rotation With Segmented Cover for Movement Detection
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Solution Overview
Problem
Current radiation receiving sensors, such as thermal image sensors, in air conditioning and electronic cookers lack the ability to accurately measure movement and adjust settings based on user activity and environmental conditions, leading to suboptimal comfort and energy efficiency.
Innovation Solution
A radiation receiving sensor system comprising an infrared receiver, a rotatable lens, and a cover member with varying infrared transmittance areas, allowing for precise measurement of infrared radiation and adjustment of observation areas to detect movement and temperature distribution, enabling optimal control of air conditioning and cooking processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a conventional radiation receiving sensor is used, then the structure is simple, but the measurement precision of movement and temperature distribution is insufficient
Solution Approach 1:
The cover member is divided into multiple areas with different infrared transmittance characteristics. Each area has specific optical path length characteristics that enable differentiation of infrared radiation sources at various distances, thereby improving measurement precision without requiring complex sensor arrays
Solution Approach 2:
The patent introduces optical path length as an additional dimension for measurement. By creating areas with different optical path lengths in the cover member, the system can distinguish between infrared radiation from different distances, adding depth information to the temperature distribution measurement
2Measurement precision
If the lens rotates to detect movement, then the detection capability is improved, but infrared radiation from different directions may cause measurement errors
Solution Approach 1:
Different areas of the cover member are assigned different infrared transmittance properties. The first area allows infrared radiation to pass through with a specific optical path length, while the second area has a different optical path length, enabling the system to filter and identify radiation from specific directions and distances
Solution Approach 2:
The cover member acts as an intermediary element between the infrared receiver and the environment. By incorporating areas with different optical path lengths, it mediates the infrared radiation before it reaches the sensor, encoding directional and distance information that helps distinguish target movement from background radiation
3Measurement precision
If the cover member has uniform infrared transmittance, then the manufacturing is simple, but the optical path length variation needed for movement detection is not achieved
Solution Approach 1:
The cover member incorporates areas with different infrared transmittance properties at specific locations. This local differentiation of optical characteristics enables movement detection through optical path length variation while maintaining a relatively simple overall structure that can be manufactured using conventional techniques
Solution Approach 2:
The patent changes the optical parameters (infrared transmittance and optical path length) of different areas in the cover member. By controlling these parameters during manufacturing, the system achieves the required optical path length variation for movement detection without fundamentally changing the manufacturing process complexity
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 effectively measures movement and temperature distribution, allowing for personalized comfort settings and energy-efficient operation by adjusting air conditioning and cooking processes based on user activity and environmental conditions.
Implementation Method 1
a lens that allows infrared radiation to enter the infrared receiver
Implementation Method 2
an infrared receiver including a plurality of infrared receiving devices that receive infrared radiation
Implementation Method 3
The cover member includes a first area having a first infrared transmittance and a second area having a second infrared transmittance, which is lower than the first infrared transmittance
Data Source
AI summary
A radiation receiving sensor includes an infrared receiver including a plurality of infrared receiving devices that receive infrared radiation, a lens that allows infrared radiation to enter the infrared receiver, a rotator that rotates the infrared receiver and the lens about a part of the lens, and a cover member that faces the infrared receiver through the lens and that has translucency.