InSb Photodiode Infrared Sensor Ambient Operation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing infrared sensors used in manufacturing processes face challenges with low sensitivity and slow response speed, particularly at higher speeds, and require cooling to extreme temperatures, making them impractical for use in small spaces due to size, power, and thermal noise issues.
Innovation Solution
A thermal radiation detection system utilizing an array of Indium Antimonide (InSb)-based photodiode infrared detectors with an amplifier and temperature sensing circuit, capable of operating at ambient temperatures, and a signal processing circuit for noise correction, allowing for improved signal-to-noise ratios and faster detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If quantum type infrared sensors are used to achieve high sensitivity and high response speed, then detection performance is improved, but the sensor requires cooling to extremely low temperatures which increases device complexity and space requirements
Solution Approach 1:
The patent changes the operating temperature parameter from extremely low temperatures to ambient temperature, enabling the infrared sensor to function without complex cooling systems while maintaining detection capability through the use of InSb photodiode material that is inherently suitable for ambient operation
Solution Approach 2:
The patent extracts and removes the cooling system from the sensor assembly, separating the detection function from the thermal management function, thereby simplifying the overall device structure and reducing space requirements while maintaining high detection performance
2Measurement precision
If quantum type infrared sensors are cooled to reduce noise and achieve desired sensitivity, then detection precision is improved, but the cooling components consume additional power and generate additional thermal noise
Solution Approach 1:
The sensor system is designed to operate autonomously at ambient temperature without requiring external cooling power, utilizing the natural thermal environment to maintain optimal operating conditions and eliminate the power consumption associated with cooling components
3Device complexity
If thermal type infrared sensors are used to operate at room temperature, then device simplicity is maintained, but sensitivity and response speed are insufficient for higher speed manufacturing processes
Solution Approach 1:
The patent employs Indium Antimonide (InSb) photodiode material, a composite semiconductor material that combines the advantages of room-temperature operation with high-speed response capability, achieving both simplicity and performance through material science advancement
4Measurement precision
If cooling components are added to the sensor system to achieve desired sensitivity, then detection performance is improved, but the overall form factor increases making it challenging to incorporate into small spaces
Solution Approach 1:
The patent removes the cooling system entirely from the sensor design, extracting the thermal management function from the detection device, thereby maintaining a compact form factor suitable for integration into confined manufacturing spaces while preserving high detection sensitivity through ambient-temperature-optimized detector design
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 enables high-speed infrared sensing without the need for cooling, enhancing sensitivity and response speed while maintaining a compact form factor, suitable for industrial applications.
Implementation Method 1
Indium Antimonide (InSb)-based photodiode infrared detector configured to generate an output responsive to detected mid-infrared wavelengths
Data Source
AI summary
Systems and methods for thermal radiation detection utilizing a thermal radiation detection system are provided. The thermal radiation detection system includes one or more Indium Antimonide (InSb)-based photodiode infrared detectors and a temperature sensing circuit. The temperature sensing circuit is configured to generate signals correlated to the temperatures of one or more of the plurality of infrared sensor elements. The thermal radiation detection system also includes a signal processing circuit.