Aspirating Detector With Speed-Oscillating Fluid Mover
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Solution Overview
Problem
Conventional aspirating detectors are limited to smoke detection and fail to identify other chemical byproducts or airborne threats, requiring additional hardware that increases system size and cost.
Innovation Solution
An aspirating detector system with a speed-oscillating fluid mover, filter, flow sensor, and controller that determines the presence of target substances and filter obstructions, allowing for enhanced detection of various chemicals and particles in a compact structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If additional detection hardware is added to extend detection capability beyond smoke, then detection versatility is improved, but device complexity and cost increase
Solution Approach 1:
The patent applies multi-functionality by enabling a single aspirating detector to perform both smoke detection and chemical substance detection through integrated sensors and sophisticated signal processing algorithms. The system uses multiple detection channels within one device, allowing it to identify various target substances including smoke particles, chemical byproducts, and airborne toxins without requiring separate dedicated detectors for each function.
2Adaptability or versatility
If multiple detector types are integrated to detect various substances, then detection versatility is improved, but device complexity increases
Solution Approach 1:
The patent combines multiple detector types and sensing capabilities into a single integrated aspirating detector unit. The system merges smoke detection, chemical substance detection, and particle analysis functions within one cohesive device structure, using shared components such as the aspirating mechanism, fluid mover, and control processing unit to reduce overall system complexity.
Solution Approach 2:
The integrated detector employs universal sensing principles and multi-functional sensor arrays that can detect different types of substances (smoke, chemicals, toxins) using the same physical platform, eliminating the need for multiple separate specialized detectors.
3Reliability
If conventional aspirating detectors are used for smoke detection, then smoke detection capability is maintained, but ability to detect other chemical byproducts is lost
Solution Approach 1:
The system maintains reliable smoke detection while simultaneously gaining the capability to detect chemical byproducts, airborne toxins, and other target substances through integrated multi-functional sensors and advanced signal processing that analyzes spectral and temporal characteristics of detected particles and gases.
Solution Approach 2:
The detector utilizes parameter changes in the analyte (such as optical properties, mass spectrometry signatures, or other physical-chemical characteristics) to distinguish between different target substances including smoke and chemical byproducts, allowing the same hardware to reliably detect multiple types of threats by analyzing different parameters.
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 provides enhanced sensitivity and reliability for detecting a variety of chemicals and particles, enabling early warning capabilities and reducing false alarms through intelligent response mechanisms.
Implementation Method 1
When particles from smoke are present in the ambient air, the particles block or scatter a portion of the light. As a result, the intensity of the light received, and thus the signals, changes.
Implementation Method 2
When particles from smoke are present in the ambient air, the particles block or scatter a portion of the light.
Implementation Method 3
a speed-oscillating fluid mover in the passage... determine whether the filter becomes obstructed based on a response of the flow sensor to speed-oscillations of the speed-oscillating fluid mover
Data Source
Figure 1~2
Figure 3
Figure 4A~4B
AI summary
An aspirating detector system (20) includes a detector (28) and a controller (32). The detector includes a chamber (34), a light source (40) adjacent the chamber, and a sensor (42) adjacent the chamber. The sensor is operable to emit sensor signals responsive to received light from interaction of a light beam (B) from the light source with an analyte in the chamber. The controller (32) is connected to receive the sensor signals. The controller is configured to determine whether a target substance is present in the analyte based on an intensity of the received light.