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Updated: May 30, 2026

Measuring Sub-23 Nanometer Real Driving Particle Number Emissions Using the Portable DownToTen Sampling System

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Published on: May 22, 2020

Low-Cost Sensor System for Air Purification Process Evaluation.

Arkadiusz Moskal¹, Wiktor Jagodowicz¹, Agata Penconek¹

¹Faculty of Chemical and Process Engineering, Warsaw University of Technology, 00-645 Warsaw, Poland.

Sensors (Basel, Switzerland)

|March 28, 2024

Summary

This summary is machine-generated.

A new low-cost, portable system effectively monitors air quality using ESP32 boards and Alphasense sensors. It accurately tracks aerosol particles and gases, showing promise for real-time environmental and indoor air assessment.

Keywords:

air purification gas sensors low-cost sensors particle counters volatile organic compound sensor

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Additive Manufacturing-Enabled Low-Cost Particle Detector

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Published on: March 24, 2023

Area of Science:

Environmental Science
Sensor Technology
Materials Science

Background:

Growing awareness of aerosol particle impact on health and environment necessitates advanced air purification techniques.
Need for fast, low-cost air quality evaluation devices, especially where advanced methods like gas chromatography (GC) are unavailable.
Potential for small, portable systems to integrate with air-cleaning technologies for enhanced functionality.

Purpose of the Study:

To propose and evaluate a self-assembled, low-cost system for real-time air quality assessment.
To demonstrate the system's capability in diverse indoor and outdoor applications.
To assess the system's performance in evaluating air purification efficiency.

Main Methods:

Utilized ESP32 boards with ESP-NOW wireless protocol as the system framework.
Employed Alphasense sensors for measuring aerosol particle concentration.
Measured concentrations of gases including NO2, SO2, O3, CO, CO2, and H2S.

Main Results:

The system demonstrated significant reduction in aerosol particles and SO2 concentration after air purification.
An undesirable increase in NO2 concentration was observed.
Aerosol particle measurements correlated well with a professional GRIMM device, validating the system's trends.

Conclusions:

The developed low-cost system shows auspicious results for evaluating air quality.
It represents a significant step towards creating efficient, affordable air quality monitoring solutions.
The system is suitable for various indoor and outdoor air quality assessment applications.