Loading…

Particulate Matter Citizen Information Network

By Community Mapping Center

Device Specification

Sensor Infomation

A CMC Fine dust device (tentacle) draws air using a fan and measures minute particles of 0.3 μm and 10 μm in diameter as a reflection due to particles in the air passing through the laser.
Data measured every 30 seconds can be uploaded via Wi-Fi at the same time to both Thingspeak.com and Mise.today to verify air quality online.

Technical Specifications

 

Fine Dust Measurement

  • Sensor using Laser

  • PMSA003

  • Measuring range: 0.3~1.0; 1.0~2.5; 2.5~10  (μm)

  • Counting efficiency: 50%@0.3um 98% @> = 0.5 um

  • Response time: ≤ 10sec

  • Operating temperature range: -10 ~ 60°C

  • Storable Temperature: -40 ~ 80°C

  • Operating humidity range: 0 ~ 99%

 

Temperature and Humidity Measurement

  • SHT20

  • Measuring range: 0~100%RH  -40°~80°C

  • Temperature Accuracy: ±2℃

  • Humidity Accuracy: ±5%RH

 
Micro Controller Unit
  • Wi-Fi Module IoT Arduino Chip

  • ESP32

  • Operating temperature range: -40 ~ 125°C

  • Storable Temperature: -40 ~ 150°C

  • Xtensa® single-/dual-core 32-bit LX6 microprocessor(s)

  • 448 KB ROM

  • 520 KB SRAM

  • 16 KB SRAM in RTC

  • QSPI supports multiple flash/SRAM chips

Wireless

  • 802.11 b/g/n

  • 802.11 n (2.4 GHz), up to 150 Mbps

  • WMM

  • TX/RX A-MPDU, RX A-MSDU

 

Display

  • Show data values; shows if the device is operable

  • SH1106

  • Operating temperature range: -40 ~ 85°C

 

Power

  • Operating Voltage: DC 5V 2A

 

Size and Weight

  • Width: 130mm

  • Height: 80mm

  • Depth: 32mm

 

System Requirements

  • Internet Connection (Wi-Fi Wireless)

  • PC or Mobile(Needed for the initiation of the device)

 

Language support

  • Setting page
    English, Korean

  • Mise.Today web site
    English, Korean

 

Environment

  • Operating temperature range: -10 ~ 60°C

  • Storable Temperature: -40 ~ 80°C