Addressable Sensor Array for Compact Particle Analysis
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Solution Overview
Problem
Conventional particle sensors are large and limited in mobility, sensing capabilities, and cannot provide particle size or sort information, making them unsuitable for integration into mobile devices and effective air quality monitoring.
Innovation Solution
A sensor arrangement with a base electrode generating an electrical field, a support layer, and a sensor array of addressable sensor elements that detect particles through impedance changes, optical shading, or gas adsorption, allowing for particle size and sort analysis, and includes a cleaning mechanism for desorption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional light scattering methods are used for particle detection, then particle density can be analyzed, but the sensor form factor becomes large (several cubic centimeters) and mobility is limited
Solution Approach 1:
The patent replaces conventional light scattering methods with an electrical field-based detection system. Sensor elements detect particles through impedance changes, optical shading, or gas adsorption mechanisms, eliminating the need for large optical components while maintaining particle detection capability
Solution Approach 2:
The invention changes the detection parameter from optical scattering to electrical field interaction. By measuring impedance changes, optical shading, or gas adsorption in response to particle approach or adsorption, the system achieves compact size while preserving measurement functionality
2Measurement precision
If conventional particle sensors are used, then particle density can be measured, but particle size and sort information cannot be provided
Solution Approach 1:
The patent divides the detection system into multiple addressable sensor elements arranged in a sensor array. Each sensor element can independently detect particles, and by analyzing which specific elements detect particles and their response characteristics, the system can determine particle size and type information in addition to density
Solution Approach 2:
The sensor elements are designed to provide multiple detection functions simultaneously. Each element can detect particle approach, particle adsorption, and provide signals that enable size and type classification, making the system multi-functional while using the same basic sensor structure
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 compact, mobile particle analysis capable of distinguishing particle size and type, enhancing air quality monitoring by providing detailed particle information.
Implementation Method 1
a base electrode configured to generate an electrical field for particle attraction
Implementation Method 2
each sensor element of the plurality of sensor elements is configured to generate or modify an electrical signal in response to a particle at least one of adsorbed to and approaching the sensor element
Implementation Method 3
and includes a cleaning mechanism for desorption
Data Source
AI summary
According to various embodiments, a sensor arrangement for particle analysis may include: a base electrode configured to generate an electrical field for particle attraction; a support layer disposed over the base electrode; a sensor array disposed over the support layer and including or formed from a plurality of sensor elements, wherein each sensor element of the plurality of sensor elements is configured to generate or modify an electrical signal in response to a particle at least one of adsorbed to and approaching the sensor element; and an electrical contact structure may include or be formed from a plurality of contact lines, wherein each contact line of the plurality of contact lines is electrically connected to a respective sensor element of the plurality of sensor elements, such that each sensor element of the plurality of sensor elements is addressable via the contact structure.