Multi-Gas Detection Using Dual Wavelength-Modulated Lasers
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Solution Overview
Problem
Existing gas detection devices face challenges in downsizing due to the need for multiple sensors to detect different types of gases, leading to increased size, cost, and power consumption.
Innovation Solution
A gas detection device utilizing a single sensor to detect multiple gases by employing lasers emitting beams of different wavelengths modulated at distinct frequencies, allowing for high-accuracy detection through a single sensor configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple sensors are used to detect different types of gases, then detection capability for multiple gas types is improved, but device size increases
Solution Approach 1:
The patent applies multi-functionality by enabling a single sensor to detect multiple types of gases through wavelength-modulated laser beams. Each gas target is detected by modulating the laser beam wavelength to match the gas's absorption characteristics, allowing one sensor to perform the function of multiple specialized sensors.
Solution Approach 2:
The patent changes the wavelength parameter of the laser beam to adapt to different gas detection requirements. By dynamically adjusting the wavelength modulation frequency and characteristics, the system can detect different gas types with the same sensor, resolving the contradiction between detection versatility and device size.
2Adaptability or versatility
If multiple sensors are used to detect different types of gases, then detection capability for multiple gas types is improved, but cost increases
Solution Approach 1:
The patent eliminates the need for multiple specialized sensors by implementing a universal detection system. A single sensor combined with wavelength-modulated laser beams can detect various gas types, significantly reducing the overall system cost compared to purchasing and maintaining multiple separate sensor systems.
Solution Approach 2:
The system uses parameter changes in laser beam wavelength modulation to achieve versatile gas detection with a single sensor. This approach replaces the need for expensive multiple sensor configurations, making the system more cost-effective while maintaining comprehensive gas detection capability.
3Adaptability or versatility
If multiple sensors are used to detect different types of gases, then detection capability for multiple gas types is improved, but power consumption increases
Solution Approach 1:
The patent reduces power consumption by using a single sensor instead of multiple sensors. The wavelength-modulated laser beam system allows one sensor to handle multiple gas detection tasks, thereby reducing the total power consumption that would otherwise be required to operate multiple sensor systems simultaneously.
Solution Approach 2:
The system optimizes power consumption by dynamically adjusting the wavelength modulation parameters of the laser beam. This allows efficient energy utilization across different gas detection scenarios, reducing overall power consumption compared to maintaining multiple active sensors for different gas types.
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
Enables downsizing of the device, reduces costs, and minimizes power consumption while maintaining high detection accuracy for multiple gas types.
Implementation Method 1
The first laser is configured to be driven by the first driver to emit a first beam. A first wavelength of the first beam is configured to change at a first frequency. The second laser is configured to be driven by the second driver to emit a second beam. A second wavelength of the second beam is configured to change at a second frequency.
Implementation Method 2
there is a gas detection device that detects a detection target based on laser absorption by the detection target
Data Source
AI summary
According to one embodiment, a gas detection device includes a driver section, an element section, a sensor, and a detector. The driver section includes a first driver and a second driver. The element section includes a first laser and a second laser. The first laser is configured to be driven by the first driver to emit a first beam. A first wavelength of the first beam is configured to change at a first frequency. The second laser is configured to be driven by the second driver to emit a second beam. A second wavelength of the second beam is configured to change at a second frequency. The second frequency is different from the first frequency. The second wavelength is different from the first wavelength. The sensor is configured to detect a received beam based on the first beam and the second beam.