Air quality monitoring device & sensors research

Air Quality monitoring is well known and established science which started back in the 80's. At that time, the technology was quite limited, and the solution used to quantify the air pollution complex, cumbersome and really expensive.

Fortunately, now days, with the most recent and modern technologies, the solutions used for Air Quality monitoring are becoming not only more precise, but also faster at measuring. Devices are becoming smaller, and cost much more affordable than ever before. For instance, new technologies like the Tapered element oscillating micro balance (TOEM) provide significant advantages over the traditional Beta Attenuation Monitors (BAM)

Even more recently, ultra-affordable sensors are starting to appear on the market - many of them linked to the IOT trend of sensing everything. While most of them are purely gimmick, and so definitely useless toys, some of them are starting to achieve performances comparable to professional monitors, at one hundred time less of cost of them. In order to asses the reliability of those sensors, the Earth Sensing Labs from the World Air Quality Index project is and has been conducting many Air Quality Sensor research and live-data experiments from many years.

The particle sensors can detect the amount of dust in the Air. While the first generation was just able to detect the amount of opacity, most recent sensors can now detect not PM_2.5 and PM₁₀ but also up to 7 different particle size (aka bins).

Plantower PMS 7003
Laser based PM_2.5/PM₁₀ sensor
20USD (130CN¥)

Plantower PMS 5003
Laser based PM_2.5/PM₁₀ sensor
18USD (120CN¥)

Plantower PMS 3003
Laser based PM_2.5/PM₁₀ sensor
14USD (90CN¥)

Plantower PMS 1003
Laser based PM_2.5/PM₁₀ sensor
14USD (90CN¥)

Comming Soon

Plantower PMS A003
Laser based PM_2.5/PM₁₀ sensor
24USD (160CN¥)

Novafitness SD011
Laser based PM_2.5/PM₁₀ sensor
23USD (150CN¥)

Comming Soon

Novafitness SD018
Laser based PM_2.5/PM₁₀ sensor
19USD (128CN¥)

Novafitness SD021
Laser based PM_2.5/PM₁₀ sensor
23USD (155CN¥)

Yuntong YT-001
Laser based PM_2.5/PM₁₀ sensor
20USD (130CN¥)

Comming Soon

Sharp DN7C3JA001
Virtual Impactor for Sharp
GP2Y1051AU0F
20USD (135CN¥)

Shinyei PPD42NS
LPO Optical PM sensor
5USD (35CN¥)

Samyoung DSM501
LPO Optical PM sensor
4USD (24CN¥)

Modified Shinyei PPD42NS
Analog Optical PM sensor
5USD (35CN¥)

Dylos DC1100
Laser based PM_2.5/PM₁₀
integrated monitor
300USD (2000CN¥)

Comming Soon

Alphasense OPC-N2
Laser based PM_2.5/PM₁₀ sensor
500USD (3333CN¥)

On the opposite of particle sensors, the gas sensor can detect and count the type of particle present in the air, such as for instance Ozone (O₃), Nitrogen Dioxide (NO₂), Sulfur Dioxide (SO₂), ...

MQ 131
Ozone Electro-Chemical sensor
60CNY

Specs
Ozone Electro-Chemical sensor
57USD (380 CN¥)

SGX MiCs 2614
Ozone MEMS sensor
18USD (120 CN¥)

SGX MiCs 2714
NO₂ MEMS sensor
23USD (150 CN¥)

Alphasense NO2 B43F
NO₂ Electro-Chemical sensor
90USD (600 CN¥)

MQ 9
Carbon Monoxyde Electro-Chemical sensor
5CNY

The graph "BAM PM_2.5" is the reference measurement from a professional BAM monitor. A loess smoothing is applied to all the other graphs in order to minimize the noise. You can move your mouse over the graph labels to see the actual output vs. the averaged values.

대기질 지수 단계에 대하여

AQI	지수구분	구간의미
0 - 50	좋음	대기오염 관련 질환자군에서도 영향이 유발되지 않을 수준
51 -100	보통	환자군에게 만성 노출시 경미한 영향이 유발될 수 있는 수준
101-150	민감군영향	환자군 및 민감군에게 유해한 영향이 유발될 수 있는 수준
151-200	나쁨	환자군 및 민감군(어린이, 노약자 등)에게 유해한 영향 유발, 일반인도 건강상 불쾌감을 경험할 수 있는 수준
201-300	매우나쁨	환자군 및 민감군에게 급성 노출시 심각한 영향 유발, 일반인도 약한 영향이 유발될 수 있는 수준
300+	위험	환자군 및 민감군에게 응급 조치가 발생되거나, 일반인에게 유해한 영향이 유발될 수 있는 수준

(Reference: see airkorea.or.kr)

대기질과 오염에 대해 더 많은 것을 알아보려면 위키피디아의 대기질 문서(영어)을 보거나 대기질과 건강에 대한 AirNow 가이드(영어)를 참조해보세요.

매우 유용한 베이징의 의학박사 Richard Saint Cyr MD의 건강 관련 팁을 보려면 www.myhealthbeijing.com 의 블로그를 확인하세요.