Real-time Low-cost PM2.5 Sensing

Technology Overview

Atmospheric particulate matter is classified as a carcinogen by IARC and WHO as the particulates are able to penetrate deep into the lungs and blood streams. PM2.5, particulates smaller than 2.5um, is especially harmful according to studies.

PM2.5 particulates originate from both natural sources (volcanoes, grassland fires, etc.) and burning of fossil fuels. Concentration of PM2.5 in the environment changes due to several factors like wind direction, temperature and proximity to source of pollutant. However, current PM2.5 monitoring is difficult, expensive, and sparse.

This technology implements both low-cost PM2.5 sensing module and a cloud-based platform to curate data globally in real-time.

Technology Features & Specifications

PM2.5 sensor modules features an optical chamber sensing design capable of:

  • Mass concentration measurement (1 to 1,000 µg/m3), particulate concentration count (1 to 10,000 #/cm3)
  • Particle detection size 0.4 - 2.5 µm
  • Lower cost than industrial PM2.5 monitors, yet provides comparable data accuracy
  • Versatile interface, suitable for integration into other systems (via BLE, Wi-Fi, cellular, or RS232)
  • Low-latency sampling at interval of 1-2 seconds seconds, 
  • Peak power consumption 0.5W, Modular design allows for use with Lithium Ion batteries
  • Self-calibrating with little long-term drift and long lifetime even in high pollution areas
  • On-board data logging with optional storage card
  • Cloud-based platform where data is curated and recorded

Potential Applications

  • Smarter control of ambient or micro-environment air pollution through better data
  • Fine-grained environmental monitoring of PM2.5 pollutant
  • crowd-sourced environmental monitoring
  • environmental research and pollutant detection and enforcement 
  • Smart cities applications

Market Trends and Opportunities

Industrial-grade PM2.5 sensors are costly to procure and maintain. Solution from this technology provider is similarly accurate, at a lower cost and optional battery-backed operation makes it easy to deploy for fine-grained monitoring of environmental pollutant.

Data from the sensors curated on the cloud is used for real-time monitoring, analysis, and prediction.

Customer Benefits

Internet connected, real-time monitoring of PM2.5

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