Gas Detection Using Selective Sensors to Eliminate Separation Complexity
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Solution Overview
Problem
Current gas detecting devices face challenges in accurately measuring the concentration of a target gas within a gas mixture without separating it, due to interference from other gases, which results in inaccurate readings and high costs associated with gas separation devices that are also difficult to miniaturize and carry.
Innovation Solution
A gas detecting device comprising an actuating-and-sensing module with a first and second gas sensor, a gas transportation actuator, a driving controller, a data storage device, and a data processor, which measures and calculates the concentration of the target gas by comparing reference information stored in a database with real-time measurements, allowing for accurate detection without prior separation of gases.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If gas separation is performed before detection, then measurement accuracy is improved, but device complexity and cost increase significantly
Solution Approach 1:
The patent extracts the harmful interference factor (other gases) from the detection system by using selective gas sensors that respond only to specific target gases. Each sensor is designed with selective permeability or chemical affinity to ignore interfering gases while detecting the target gas, thereby achieving accurate measurement without requiring physical separation of the gas mixture.
Solution Approach 2:
The patent introduces selective gas sensors as intermediaries between the gas mixture and the detection system. These sensors act as mediators that selectively transmit information about target gas concentrations while blocking or ignoring interfering gases, enabling accurate detection without direct contact with the complex gas mixture.
2Measurement precision
If gas separation devices are used, then measurement accuracy is improved, but portability and ease of operation deteriorate
Solution Approach 1:
The patent replaces complex mechanical gas separation systems with electronic sensing systems. Instead of using physical separation devices that require mechanical operation and have large size, the invention uses electronic gas sensors with selective detection capabilities, thereby achieving accurate measurement while maintaining small size and portability.
Solution Approach 2:
The patent changes the detection parameter from physical separation (mechanical process) to selective electrical/chemical sensing. By using sensors with different selectivity parameters (different response characteristics to various gases), the system achieves accurate target gas detection without requiring physical separation, thereby improving portability and ease of operation.
3Measurement precision
If multiple gas sensors are used for selective detection, then measurement accuracy is improved, but device complexity increases
Solution Approach 1:
The patent segments the detection function by using multiple specialized gas sensors, each optimized for detecting a specific target gas. This segmentation allows each sensor to focus on a narrow detection range, improving accuracy for specific gases while the overall system complexity is managed through modular sensor design and independent operation of each sensing element.
Data Source
AI summary
A gas detecting device includes an actuating-and-sensing module, a driving controller, a data storage device and a data processor. The actuating-and-sensing module includes a first gas sensor, a second gas sensor and a gas transportation actuator. The driving controller controls the actuations and non-actuations of the first gas sensor, the second gas sensor and the gas transportation actuator. The first gas sensor measures the target gas and transmits first gas measured information to the data storage device. The second gas sensor measures the target gas and transmits second gas measured information to the data storage device. The data processor calculates concentrations of the gases in the target gas by comparing the information stored in a gas database, the first gas measured information and the second gas measured information.