MEMS Infrared Source Self-Testing Optical Flame Detectors
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for testing and calibrating infrared optical flame detectors are inadequate due to issues of speed, convenience, accuracy, precision, and cost, particularly in field testing scenarios, relying on heat sources like heater elements or flaming fires which are not commercially satisfactory.
Innovation Solution
The integration of Microelectromechanical Systems (MEMS) based infrared sources within optical flame detectors enables precise and efficient self-testing by emitting specific wavelengths of infrared radiation, reducing the need for traditional heat sources and allowing for multi-channel detector testing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional heat sources (heater elements, black bodies, flaming fires) are used for testing infrared OFDs, then the detector can be tested, but the testing process is slow, inconvenient, inaccurate, expensive, and unsuitable for field testing
Solution Approach 1:
The patent replaces traditional thermal/mechanical testing systems (heater elements, black bodies, flaming fires) with an electrical-based LED testing system. The LED-based infrared source generates specific infrared wavelengths electrically, eliminating the need for complex thermal sources and enabling rapid, precise, and convenient field testing of optical flame detectors.
2Reliability
If traditional heat sources are used for testing, then the detector can be tested, but the testing equipment is expensive and complex
Solution Approach 1:
The patent replaces complex mechanical thermal testing systems with a simplified electrical LED-based system. This substitution dramatically reduces equipment complexity and cost while maintaining or improving testing reliability, making the system suitable for field deployment.
Solution Approach 2:
The patent uses LED-based infrared sources that replicate the spectral characteristics of actual fire emissions without requiring actual fire or complex thermal sources. This copying approach simplifies the testing system while maintaining accuracy.
3Ease of operation
If field testing is performed with conventional systems, then testing can be conducted, but space constraints and flicker effects reduce testing effectiveness
Solution Approach 1:
The patent replaces mechanical flicker-based testing methods with electrical LED control, eliminating flicker effects that plague field testing. The LED system provides stable, controllable infrared emission that is not subject to mechanical vibrations or environmental disturbances, thereby improving both ease of operation and measurement precision in field conditions.
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
MEMS-based infrared sources provide accurate and rapid testing capabilities, enabling efficient self-testing of infrared detectors with improved precision and longevity, suitable for field applications where space constraints and flicker effects pose challenges to conventional systems.
Implementation Method 1
MEMS-based infrared sources within optical flame detectors enables precise and efficient self-testing by emitting specific wavelengths of infrared radiation
Data Source
Figure 1~2
AI summary
An integral testing system for testing OFDs (100; 200) is provided. The OFD (100; 200) may comprise a body (130; 230), a detector (110; 210), and an infrared source (120; 220). The detector (110; 210) and the infrared source (120; 220) may be housed with the body (130; 230). The infrared source (120; 220) may be configured to generate emissions (122; 222A, 222B, 224A, 224B) having one or more infrared wavelengths that are detectable by the detector (110; 210). The infrared source (120; 220) may be configured to produce infrared emissions to simulate flaming fire.