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.

大気汚染レベルについて

指数	大気質指数の分類(米国）	健康影響 / カテゴリ	粒子状物質(PM10,PM2.5)
0 - 50	良い - Good	通常の活動が可能	なし
51 -100	並 - Moderate	特に敏感な者は、長時間又は激しい屋外活動の減少を検討	非常に敏感な人は、長時間または激しい活動を減らすよう検討する必要がある。
101-150	敏感なグループにとっては健康に良くない - Unhealthy for Sensitive Groups	心臓・肺疾患患者、高齢者及び子供は、長時間又は激しい屋外活動を減少	心疾患や肺疾患を持つ人、高齢者、子供は、長時間または激しい活動を減らす必要がある。
151-200	健康に良くない - Unhealthy	上記の者は、長時間又は激しい屋外活動を中止 すべての者は、長時間又は激しい屋外活動を減少	心疾患や肺疾患を持つ人、高齢者、子供は、長時間または激しい活動を中止する必要がある。それ以外の人でも、長時間または激しい活動を減らす必要がある。
201-300	極めて健康に良くない - Very Unhealthy	上記の者は、すべての屋外活動を中止 すべての者は、長時間又は激しい屋外活動を中止	心疾患や肺疾患を持つ人、高齢者、子供は、全ての屋外活動を中止する必要がある。それ以外の人でも、長時間または激しい活動を中止する必要がある。
300+	危険 - Hazardous	上記の者は、屋内に留まり、体力消耗を避ける すべての者は、屋外活動を中止	全ての人が屋外活動を中止する必要がある。特に、心疾患や肺疾患を持つ人、高齢者、子供は、屋内に留まって激しい活動を避け静かに過ごす必要がある。

(Reference: see wikipedia, and cn.emb-japan.go.jp/)

大気汚染についての更なる詳細をお知りになりたい方は、WikipediaやAirNowを参照してください。

北京在住の医師Richard Saint Cyr氏による大変役に立つ健康上のアドバイスは、 www.myhealthbeijing.com をご覧ください。